Bauer Retrieval Benchmark¶

Benchmark role: Historical V1 baseline and initial Option B structured-search evidence RAG V2: Not represented by the outputs on this page

The outputs below must remain available as the pre-V2 comparison baseline. The formal repeated-run comparison is defined in RAG V2 Evaluation Protocol, and future measured results will be published in V1, V2, and Codex Evaluation Results.

This benchmark evaluates the two Bauer capabilities requested for the demonstration:

search for similar previous projects and designs;
document, product, and part search across the Bauer knowledge base.

The prompts are based on the Bauer problem statement, the Technical Twin research report, and the indexed public Bauer corpus. They deliberately mix straightforward searches with exact-table lookups, multilingual queries, contradictory-source handling, and no-match cases.

How to use this page¶

Each case contains the exact prompt and two output fields:

Codex output is populated from a direct benchmark run against the same deployed file_search RAG API and Bauer Twin API used by the LibreChat Bauer Agent.
LibreChat output is the unedited response captured from an independent LibreChat Bauer Agent conversation using the deployed Agent and its configured tools.

Initial full run: 21 July 2026
Option B B12/B14 recapture: 22 July 2026
Environment: Railway testing
Authorized Bauer files: 373
Structured demo data: 12 synthetic projects and 75 synthetic parts

Initial LibreChat capture: 14 of 14 prompts completed
Median captured latency: 33.18 seconds
Captured latency range: 18.94 to 680.81 seconds
Captured answer text: 35,533 characters

B09 was recovered through LibreChat's resumable Agent stream after the initial client connection dropped. Its 54.12-second value measures the resumed segment and is not directly comparable with the other end-to-end timings. B10 was the slowest completed case at 680.81 seconds. The aggregate statistics describe the initial full run; B12 and B14 below contain the later Option B production captures.

The RAG search was limited to no more than two focused searches per case, matching the deployed Agent instructions. Synthetic project and part records are never treated as confirmed Bauer master data.

Benchmark map¶

ID	Capability	Direct-tool result
B01	Combined document and similar-project search	Partial: good component evidence; system sizing remains open
B02	Similar nitrogen project	Strong structured match with public envelope evidence
B03	Fine-difference project comparison	Partial: details available; compare endpoint failed
B04	Project-to-parts drill-down	Strong structured result
B05	Natural-language part search	Strong synthetic result with safe qualification
B06	Maximum-pressure factual search	Answer found; source coverage is incomplete
B07	Exact technical-table lookup	Retrieval gap
B08	Product discovery from requirements	Partial: B-SELECT found; B-KOOL limit not established
B09	Product-family comparison	Partial: synthetic selection works; public comparison incomplete
B10	Contradictory-source reconciliation	Retrieval gap
B11	Safety-limit lookup	Retrieval gap
B12	German-English consistency	Strong structured result
B13	Exact certificate search	Retrieval gap
B14	Safe no-match behavior	Strong structured no-match with mandatory constraints preserved

B01 — Complete fire-brigade request¶

Prompt¶

A municipal fire brigade needs a stationary breathing-air filling system for 300-bar cylinders, DIN EN 12021 compliance, continuous online air-quality monitoring, and buffer storage. Answer in three clearly separated sections: (1) Bauer products and capabilities confirmed by the uploaded public Bauer documents, with source citations; (2) the closest synthetic previous-project record and why it matches; and (3) open engineering questions that must be confirmed before selecting or quoting a system. Never present synthetic project or part data as confirmed Bauer internal data.

Codex output¶

1. Confirmed public Bauer evidence

The retrieved high-pressure accessories catalogue says that BAUER B-DETECTION systems continuously measure the gases covered by DIN EN 12021:2014 and describes calibration gases for CO, CO₂, O₂, and VOC. Source: 0150-High-pressure-accessories-catalogue_EN...md.
The retrieved P 41 description says it supplies breathing air in accordance with DIN EN 12021:2014 when original Bauer cartridges are used. The statement is conditional on correct installation and maintenance, and on B-AEROGUARD where intake-air CO₂ exceeds the standard limit. Source: 0304-0138_pe-ve-ox...md.
An I 26 technical table covers 90–420 bar, so the public corpus contains stationary compressors capable of exceeding the requested 300-bar pressure. This passage alone does not select the correct capacity or complete filling system. Source: 0260-0094_i-26-baureihe...md.
The retrieved passages did not establish a specific buffer-storage size or a complete, quotable fire-brigade configuration.

2. Closest synthetic previous project

SYN-BK-BA-300-320 ranked first. It is a synthetic breathing-air compressor and filling-station package at 300 bar and 320 l/min, with a synthetic purification/monitoring package and 300-bar storage/filling package. SYN-BK-BA-300-500 scored almost identically. Because the prompt does not state required capacity, the ranking is not sufficient to choose between them. These records are demo data, not confirmed Bauer history.

3. Open engineering questions

Required filling time and cylinder count, duty cycle, required free-air delivery, storage-bank volume and cascade logic, monitored contaminants and shutdown behavior, room ventilation, power supply, noise limit, intake-air conditions, redundancy, applicable fire-service rules, and the final approval authority must be confirmed before selection or quotation.

LibreChat output¶

Capture: fresh independent conversation; 92.51 seconds; 5,516 answer characters; temporary benchmark conversation removed after capture.

(1) Bauer products and capabilities confirmed by the uploaded public Bauer documents, with source citations

300-bar breathing-air compressors: The VERTICUS and MINI-VERTICUS series are available in versions for up to 350 bar and are explicitly designed for breathing air (DIN EN 12021 compliance). They feature modular design, integrated purification (P-Purification), and B-CONTROL control systems.
Source: 0122-bauer_amfile_5-01e0b02709_97e454d24fc34f648c8e3d464e850ec8.md, p. 29

Continuous air-quality monitoring (B-DETECTION PLUS): This system measures CO, CO₂, O₂, and optionally absolute humidity and VOC. It complies with DIN EN 12021:2014, features automatic shutdown if limits are exceeded, and integrates with B-CONTROL MICRO/II/III. An automatic purge valve discharges contaminated air without interrupting operation.
Source: 0055-2025-03_B-DETECTION_PLUS_EN_N42078_sc-c84c36a994_4d988a9bd785418b92bbf81addb9411b.md, pp. 2–7

Buffer storage integration: While no single document explicitly describes a 300-bar buffer storage tank integrated with B-DETECTION PLUS, the system architecture diagrams in the B-DETECTION PLUS documentation show integration with high-pressure filling panels and storage piping. Modular filling stations (e.g., CNG series) use skid-based designs with expandable storage modules.
Source: 0206-0040_cs23-baureihe_ee94fc763b-9cb4e22110_c0221e631a4f4790b14297327bc1f8c9.md, p. 3; 0055-2025-03_B-DETECTION_PLUS_EN_N42078_sc-c84c36a994_4d988a9bd785418b92bbf81addb9411b.md, p. 4

Remote monitoring (B-CLOUD/B-APP): B-CONTROL MICRO +Net and B-CONTROL III support B-LINK 4G/Wi-Fi for remote access, condition-based maintenance, and push notifications for faults.
Source: 0305-0139_pe-ve-series-industry_f2dc902272-5063ca4723_0476d0803d354307a4c29f283dae22ae.md, p. 5; 0243-0077_gib22-series-md_87728d914b-1649e22110_c0221e631a4f4790b14297327bc1f8c9.md, p. 3

DIN EN 12021 compliance: BAUER states that its P-Purification systems “meet, but actually exceed all requirements of the DIN EN 12021:2014 Breathing Air Standard,” and that B-DETECTION PLUS ensures only uncontaminated air enters cylinders.
Source: 0122-bauer_amfile_5-01e0b02709_97e454d24fc34f648c8e3d464e850ec8.md, p. 29; 0150-High-pressure-accessories-catalogue_EN-8544a5e175_fde40c8ba21948d2ba0a516d2d50a62c.md, p. 6

(2) The closest synthetic previous-project record and why it matches

The closest synthetic project record is SYN-BK-BA-300-320 (“Synthetic breathing-air filling package 300 bar / 320 l/min”), returned by the search_bauer_twin_mcp_bauer-twin tool.

Why it matches:

Medium: breathing air (hard constraint satisfied).

Target pressure: 300 bar (exact match).

Capacity: 320 l/min (relevant for municipal fire-brigade use cases).

Topology: compressor and filling station (matches the requirement for a stationary filling system).

Purification and monitoring: includes a synthetic breathing-air purification and monitoring package (aligned with B-DETECTION PLUS and DIN EN 12021 compliance).

Cooling: air-cooled (suitable for indoor installation).

Control: B-CONTROL MICRO synthetic configuration (supports continuous monitoring and remote access via B-CLOUD).

Note: This is synthetic demo data and not confirmed Bauer internal master data.

(3) Open engineering questions that must be confirmed before selecting or quoting a system

Buffer storage volume and pressure balancing: What is the required buffer storage volume (e.g., total liters at 300 bar) and how should pressure equalization be managed between compressor output, buffer, and cylinder filling? Bauer’s CNG series uses modular storage modules, but no 300-bar buffer-specific design is documented in the uploaded corpus.

Integration of automatic purge valve with buffer storage: The B-DETECTION PLUS automatic purge valve discharges contaminated air downstream of measurement, but it is unclear whether this discharge path can safely vent to atmosphere when buffer storage is pressurized to 300 bar. Confirmation is needed on whether purge discharge piping must be isolated from the buffer during contamination events.

Continuous online air-quality monitoring location: Should B-DETECTION PLUS sampling occur before or after the buffer storage? Sampling after the buffer would reflect real cylinder-fill quality but may require additional filtration to protect sensors from pressure transients.

DIN EN 12021 compliance verification for fire-brigade use: While BAUER systems meet DIN EN 12021:2014, fire-brigade contracts often require additional national certifications (e.g., NFPA, EN 137, or local fire safety authority approvals). These are not addressed in the uploaded documents.

Ambient conditions and ventilation: The I26 and VERTICUS series require minimal room ventilation due to water-cooling or air-cooling design, but the required room volume, exhaust capacity, and ambient temperature limits for continuous 24/7 operation at 300 bar must be confirmed for the installation site.

Filling rate vs. buffer refill rate: To support rapid cylinder changes for fire-brigade operations, the compressor’s ability to refill the buffer within acceptable downtime (e.g., <15 min for a 2,000-L buffer at 300 bar) must be validated against the selected compressor’s delivery rate (e.g., 320–500 l/min). This is not quantified in the synthetic project summary.

B02 — Similar nitrogen project¶

Prompt¶

Find the closest previous synthetic nitrogen booster project for 420 bar and approximately 500 l/min. Explain the match using medium, pressure, capacity, topology, cooling, control, purification, and storage. Show the next two compatible alternatives and list important candidates rejected because of wrong medium, insufficient pressure, or wrong topology. Separately cite public Bauer documents that support the relevant product pressure and capacity envelope. Clearly label all historical project information as synthetic demo data.

Codex output¶

The closest synthetic record is SYN-BK-N2-420-500, with an exact match on nitrogen, 420 bar, 500 l/min, and booster topology. Its demo configuration is water-cooled with a B-CONTROL MICRO synthetic configuration, synthetic nitrogen-compatible filtration, and a synthetic 420-bar storage/filling package. The next compatible record is SYN-BK-N2-420-450, which keeps the pressure, medium, and topology but is 50 l/min lower and air-cooled. No third compatible record was returned.

The tool rejected the 365-bar nitrogen records for insufficient pressure. It rejected BM air projects for wrong medium, insufficient pressure, and compressor rather than booster topology. It rejected breathing-air packages for wrong medium and filling-station rather than booster topology.

The public GIB 26 passage confirms water-cooled boosters for air and nitrogen in 200–420 and 420–520 bar classes, but its documented delivery values begin at 8,400 l/min. It therefore supports the pressure, medium, cooling, and booster envelope, not the synthetic 500 l/min configuration. Source: 0240-0074_gi-26-baureihe1...md. All project details above remain synthetic demo data.

LibreChat output¶

Capture: fresh independent conversation; 66.12 seconds; 4,302 answer characters; temporary benchmark conversation removed after capture.

Based on the synthetic demo data and public documentation, here is the requested analysis:

Closest Previous Synthetic Nitrogen Booster Project for 420 bar / ~500 l/min¶

Project ID: SYN-BK-N2-420-500
Name: Synthetic nitrogen booster package 420 bar / 500 l/min
Cluster: Nitrogen booster package
Application Sector: Industrial gas

Parameter Value Notes

Medium Nitrogen ✅ Exact match

Pressure 420 bar ✅ Exact match

Capacity 500 l/min ✅ Exact match

Topology Booster ✅ Exact match

Cooling Water-cooled ✅ Typical for high-pressure nitrogen boosters

Control Package B-CONTROL MICRO synthetic configuration ✅ Standard for high-pressure nitrogen systems

Purification Package Synthetic nitrogen-compatible filtration package ✅ Required for nitrogen purity

Storage/Filling Package Synthetic 420-bar storage and filling package ✅ Compatible with final pressure

Match Score: 0.974
Match Reasons:
- Compatible medium: nitrogen
- Pressure delta: 0 bar
- Capacity delta: 0 l/min
- Same compressor family: N2 Booster
- Same topology: booster

Next Two Compatible Alternatives¶

Project ID Name Pressure Capacity Cooling Notes

SYN-BK-N2-420-450 Synthetic nitrogen booster package 420 bar / 450 l/min 420 bar 450 l/min Air-cooled Slightly lower capacity; air-cooled variant available

SYN-BK-N2-365-500 Synthetic nitrogen booster package 365 bar / 500 l/min 365 bar 500 l/min Not specified Excluded due to insufficient pressure (365 < 420 bar) — see rejection list below

Important Candidates Rejected¶

Project ID Reason for Exclusion

SYN-BK-AIR-BM100-500 Medium mismatch (air vs nitrogen), insufficient pressure (100 bar), topology mismatch (compressor vs booster)

SYN-BK-AIR-BM40-500 Medium mismatch (air), insufficient pressure (40 bar), topology mismatch

SYN-BK-BA-300-500 Medium mismatch (breathing air), insufficient pressure (300 bar), topology mismatch (filling station)

SYN-BK-BA-420-500 Medium mismatch (breathing air), topology mismatch (filling station)

SYN-BK-N2-365-500 Insufficient pressure (365 bar < 420 bar) — closest nitrogen alternative below target pressure

Public Bauer Documents Supporting Product Envelope¶

PE-VE Industry Brochure (0064-2026-04)

“PE-VE 365 BAR” — Technical data table lists models with max operating pressure up to 365 bar and FAD up to 500 l/min.
Note: 420 bar is outside the standard PE-VE range; higher pressures require custom N2 Booster configurations.
(Source: page 6, “Technical Data” table)

Hochdruck-Zubehörkatalog (0151-Hochdruck-Zubehoerkatalog_DE)

“B-SELECT mit Druckschalter bzw. Drucksensor für B-CONTROL” — Betriebsdruck: 414/420 bar
(Source: page 31, “B-SELECT” section)
This confirms Bauer’s standard high-pressure components are rated for 420 bar, supporting the feasibility of the target pressure.

Petrochemical Industry Brochure (0299-0133)

“BAUER high-pressure compressors are the solution of choice… for inerting, compressed air transport, or emergency valve actuation… with decades of experience… for demanding nitrogen and air applications.”
(Source: full document)
This supports the application context and reliability of nitrogen compression up to high pressures.

Important Disclaimer¶

All project, part, and compatibility records above are synthetic demo data generated by the Bauer Technical Twin demo (bauer_synthetic_demo_v1). They are not confirmed Bauer Kompressoren master data.
Public documents cited (e.g., PE-VE brochure, Hochdruck-Zubehörkatalog) are real and publicly available, but do not explicitly list a 420 bar / 500 l/min nitrogen booster as a standard product — only supporting components (e.g., B-SELECT rated to 420 bar) and application envelopes.

Let me know if you’d like to explore exact part compatibility (e.g., SYN-N2B-420 compressor model) or request a project comparison.

B03 — Fine-difference comparison¶

Prompt¶

Compare synthetic projects SYN-BK-N2-420-500 and SYN-BK-N2-365-500. Show matching attributes, changed attributes, components or linked records potentially affected by increasing the pressure from 365 to 420 bar, documents that should be reviewed, and assumptions that still require an engineer's approval. Do not imply that the synthetic compatibility relationships are confirmed Bauer engineering rules.

Codex output¶

The dedicated compare_projects action returned HTTP 400 because a Decimal value could not be JSON-serialized. The comparison below was reconstructed from two successful project-detail calls.

Matching attributes: industrial-gas sector, nitrogen medium, 500 l/min capacity, N2 Booster family, booster topology, water cooling, B-CONTROL MICRO synthetic configuration, nitrogen filtration description, installation assumptions, environment, status, and linked public-document set.

Changed attributes: pressure is 365 versus 420 bar; model is SYN-N2B-365 versus SYN-N2B-420; the storage/filling package is pressure-specific.

Records requiring review after the pressure increase: compressor/block, cooling kit, pressure valve set, purification cartridge rating, storage/filling kit, pressure transmitter range, and controller settings. The common temperature and pressure sensors must still be checked against the real design conditions.

Review the public B-NITROX, Compressors for Industry, and Bauer product-overview documents, then perform a four-eyes engineering review. The synthetic links indicate demo relationships only; they are not confirmed Bauer compatibility rules.

LibreChat output¶

Capture: fresh independent conversation; 29.81 seconds; 4,345 answer characters; temporary benchmark conversation removed after capture.

Based on the synthetic project comparison, here is a structured analysis of the differences between SYN-BK-N2-365-500 and SYN-BK-N2-420-500, with emphasis on the impact of increasing pressure from 365 to 420 bar.

⚠️ Disclaimer: All data below is synthetic demo data and not confirmed Bauer Kompressoren master data. Do not treat compatibility or engineering relationships as validated.

✅ Matching Attributes (Unchanged)¶

Attribute Value

Application sector Industrial gas

Medium Nitrogen

Capacity 500 l/min

Compressor family N2 Booster

Topology Booster

Cooling Water-cooled

Control package B-CONTROL MICRO synthetic configuration

Purification package Synthetic nitrogen-compatible filtration package

Installation Indoor skid, service access on three sides

Operating environment Temperate industrial (5–40 °C)

Standards CE demo assumption, four-eyes engineering review required

🔁 Changed Attributes (Due to Pressure Increase: 365 → 420 bar)¶

Attribute SYN-BK-N2-365-500 SYN-BK-N2-420-500 Implication

Pressure 365 bar 420 bar Higher mechanical stress, potential need for thicker walls, revised safety margins

Compressor model SYN-N2B-365 SYN-N2B-420 Different compressor stage design, possibly higher compression ratio, different motor/power requirements

Storage & filling package Synthetic 365-bar package Synthetic 420-bar package Components (valves, piping, vessels) must be rated for ≥420 bar; potential need for pressure testing at 1.1× (i.e., 462 bar)

🧩 Components Potentially Affected by Pressure Increase¶

Component Potential Impact

Compressor housing/stages Higher differential pressure may require reinforced casings, revised clearances, or upgraded bearings/seals

Intercoolers / aftercoolers May require re-sizing to handle higher discharge temperature; pressure rating must be ≥420 bar

Storage vessels & piping Must be re-qualified for 420 bar (e.g., ASME BPVC Section VIII Div. 1 design, wall thickness, hydrotest at ≥462 bar)

Valves & fittings All high-pressure valves (e.g., check, shut-off, relief) must be rated for ≥420 bar

Safety systems (PSVs, sensors) Relief valve set points and sensor ranges must be updated; potential need for redundant high-pressure shutdown

Electrical drive system Motor power/torque may increase; VFD settings may need recalibration

📄 Documents That Should Be Reviewed¶

Document ID Likely Relevance

DOC-B-NITROX Nitrogen-specific design assumptions; may include pressure-dependent material limits

DOC-INDUSTRY Industry-specific standards (e.g., ISO 13485, CGA, or local pressure equipment directives)

DOC-PRODUCT-OVERVIEW General product family specs; may list max pressure limits per model

🔍 Note: These document IDs are linked in the synthetic project record. Review should focus on sections covering: - Pressure rating derating curves - Material compatibility at high pressure - Safety system validation (e.g., PSV sizing per ASME or PED) - Hydrotest requirements

⚠️ Assumptions Requiring Engineer’s Approval¶

Assumption Reason for Review

CE demo assumption CE marking for 420 bar may require Notified Body involvement if pressure-volume product exceeds PED Category III thresholds

Four-eyes engineering review required Mandatory for pressure boundary changes; must include mechanical integrity, fatigue, and seal performance review

Water-cooled topology unchanged Higher discharge temps at 420 bar may challenge cooling capacity; verify thermal balance

Filtration package compatibility High-pressure filtration media may degrade faster; confirm life-cycle and particulate retention at 420 bar

Skid structural integrity Increased weight and loads may require re-analysis of mounting, vibration, and seismic support

Let me know if you’d like to look up specific part IDs (e.g., SYN-N2B-420 or 420-bar storage vessel) or review excerpts from the linked documents.

B04 — Project-to-parts drill-down¶

Prompt¶

Open synthetic project SYN-BK-N2-420-500. Summarize its configuration and list all linked parts, grouped by compressor, control, purification, valves, cooling, storage/filling, and sensors. Then list its linked public evidence documents. Clearly distinguish synthetic parts from genuine public Bauer documents.

Codex output¶

SYN-BK-N2-420-500 is a synthetic indoor, water-cooled nitrogen booster package rated at 420 bar and 500 l/min. It uses demo model SYN-N2B-420, a B-CONTROL MICRO synthetic configuration, synthetic nitrogen filtration, and a synthetic 420-bar storage/filling package.

Group	Linked synthetic part
Compressor	`SYN-P-CMP-N2-420-500`
Control	`SYN-P-CTL-N2-420-500`
Purification	`SYN-P-PUR-N2-420-500`
Valves	`SYN-P-VLV-N2-420-500`
Cooling	`SYN-P-CLG-N2-420-500`
Storage/filling	`SYN-P-STG-N2-420-500`
Sensors	`SYN-P-SNS-PRESSURE-500`, `SYN-P-SNS-TEMP-IND`

The linked genuine public evidence records are the B-NITROX brochure, Compressors for Industry brochure, and BAUER product overview. The documents are public Bauer sources; every project, part number, and compatibility relationship listed above is synthetic demo data.

LibreChat output¶

Capture: fresh independent conversation; 30.79 seconds; 4,182 answer characters; temporary benchmark conversation removed after capture.

Project Summary: SYN-BK-N2-420-500¶

Name: Synthetic nitrogen booster package 420 bar / 500 l/min

Medium: Nitrogen

Pressure: 420 bar

Capacity: 500 l/min

Topology: Booster

Compressor Family: N2 Booster

Cooling: Water-cooled

Control Package: B-CONTROL MICRO synthetic configuration

Purification Package: Synthetic nitrogen-compatible filtration package

Storage/Filling Package: Synthetic 420-bar storage and filling package

Installation: Indoor skid, service access on three sides

Environment: Temperate industrial (5–40 °C)

Status: Reference

Standards: CE demo assumption, four-eyes engineering review required

⚠️ Disclaimer: All project, part, and compatibility data are synthetic demo data and not confirmed Bauer Kompressoren master data.

Linked Parts (Grouped by Category)¶

✅ Compressor¶

Part ID: SYN-P-CMP-N2-420-500

Description: Synthetic compressor block

Category: CMP

Synonyms: compressor, Verdichter, Kompressor

Max pressure: 420 bar

Compatible medium: nitrogen

✅ Control¶

Part ID: SYN-P-CTL-N2-420-500

Description: Synthetic control panel (B-CONTROL MICRO synthetic configuration)

Category: CTL

Synonyms: control panel, Steuerung

Max pressure: 420 bar

Compatible medium: nitrogen

✅ Purification¶

Part ID: SYN-P-PUR-N2-420-500

Description: Synthetic nitrogen-compatible filtration package

Category: PUR

Synonyms: filter, Reinigungssystem

Max pressure: 420 bar

Compatible medium: nitrogen

✅ Cooling¶

Part ID: SYN-P-CLG-N2-420-500

Description: Synthetic cooling kit

Category: CLG

Synonyms: cooler, Kuehlung, cooling system

Max pressure: 420 bar

Compatible medium: nitrogen

✅ Valves¶

Part ID: SYN-P-VLV-N2-420-500

Description: Synthetic pressure valve set

Category: VLV

Synonyms: valve, Ventil, safety valve

Max pressure: 420 bar

Compatible medium: nitrogen

✅ Storage/Filling¶

Part ID: SYN-P-STG-N2-420-500

Description: Synthetic storage and filling kit

Category: STG

Synonyms: storage bank, Speicher, filling panel

Max pressure: 420 bar

Compatible medium: nitrogen

✅ Sensors¶

Part ID: SYN-P-SEN-N2-420-500

Description: Synthetic pressure/temperature sensor set

Category: SEN

Synonyms: sensor, Messgerät

Max pressure: 420 bar

Compatible medium: nitrogen

Part ID: SYN-P-SEN-COMM-N2-500

Description: Synthetic common sensor

Category: SEN

Max pressure: 420 bar

Compatible medium: nitrogen

Linked Public Evidence Documents (Genuine Bauer Documents)¶

ID Title Type Source URL Filename

DOC-B-NITROX B-NITROX brochure Brochure Link 2026-04_B-Nitrox_EN_N34460_sc.pdf

DOC-INDUSTRY Compressors for Industry brochure Brochure Link 2026-04_Compressors_for_Industry_EN_N39771_sc.pdf

DOC-PRODUCT-OVERVIEW BAUER product overview Catalogue Link 2025-06_Product_overview_EN_N37488_sc.pdf

🔍 All documents above are publicly available Bauer Kompressoren documents, used as evidence sources in the synthetic demo.

Summary of Distinction¶

Type Status Notes

Parts Synthetic only All part IDs prefixed SYN-P-…, explicitly marked synthetic: true, and not real Bauer part numbers

Project Synthetic only Project ID SYN-BK-N2-420-500, marked synthetic: true, not a real project

Documents Genuine public Bauer documents All linked to real URLs and filenames from Bauer’s website

Let me know if you’d like to explore any part or document in more detail.

B05 — Natural-language part search¶

Prompt¶

We need a pressure transmitter suitable for nitrogen at 420 bar, but we do not know the part number. Find the best compatible synthetic part. Report its part number, maximum pressure, compatible media, related projects, and linked documents. Explain why parts with insufficient pressure rating or incompatible media were rejected. Do not claim that the part is a real Bauer article.

Codex output¶

The best synthetic result is SYN-P-SNS-PRESSURE-500, described as a 0–500 bar pressure transmitter. Its demo metadata allows nitrogen, air, and breathing air and links it to all 12 synthetic projects. Its linked public evidence record is the Bauer product overview.

SYN-P-SNS-TEMP-IND also passed the broad sensor/pressure/media filters but is a discharge-temperature sensor, so it is functionally wrong and must be rejected. Project-specific 365-bar components were excluded for insufficient pressure, and non-sensor records were excluded by category. SYN-P-SNS-DEWPOINT-BA was excluded because its demo medium is breathing air rather than nitrogen.

This is a synthetic identifier and compatibility assumption, not a real Bauer article number or approved engineering selection.

LibreChat output¶

Capture: fresh independent conversation; 20.67 seconds; 1,504 answer characters; temporary benchmark conversation removed after capture.

Based on the search results, the best compatible synthetic part for a pressure transmitter for nitrogen at 420 bar is:

Part Number: SYN-P-SNS-PRES-IND¶

Description: Synthetic industrial pressure sensor

Maximum Pressure Rating: 500 bar

Compatible Media: nitrogen, air

Related Projects:

SYN-BK-N2-365-400

SYN-BK-N2-365-500

SYN-BK-N2-420-450

SYN-BK-N2-420-500

SYN-BK-AIR-BM40-500

SYN-BK-AIR-BM40-800

SYN-BK-AIR-BM100-500

SYN-BK-AIR-BM100-800

SYN-BK-BA-300-320

SYN-BK-BA-300-500

SYN-BK-BA-420-320

SYN-BK-BA-420-500

Linked Documents: DOC-PRODUCT-OVERVIEW

Rejection Reasons for Other Parts¶

Parts were excluded for the following reasons (as per hard exclusions in the demo data):

Insufficient pressure rating: Many parts (e.g., SYN-P-CLG-AIR-BM100-500, SYN-P-CLG-N2-365-400) have maximum ratings below 420 bar (e.g., 100 bar or 365 bar), and thus were excluded.

Incompatible media: Parts designated for “air” only (e.g., SYN-P-CLG-AIR-BM40-500) were excluded because the required medium is nitrogen.

Category mismatch: Only parts in the SNS (sensor) category were considered; others (e.g., compressors, components) were excluded.

Note: All data above is synthetic demo data, not confirmed Bauer Kompressoren master data. The part SYN-P-SNS-PRES-IND is a synthetic match and should not be treated as an actual Bauer product.

B06 — Maximum-pressure factual search¶

Prompt¶

Based only on the uploaded public Bauer documents, what is the highest documented maximum operating pressure for a Bauer compressor? Name the applicable product families, distinguish compressors from boosters, and cite the exact source page or section. Also explain the difference between maximum operating pressure and shutdown pressure if the source makes that distinction. Do not assume that the most frequently retrieved pressure is the maximum.

Codex output¶

The highest value established by the retrieved passages is 525 bar for the K 25–K 28 compressor systems, together with 22–110 kW and 800–6,800 l/min. Source: 0061-2026-04_Compressors_for_Industry_FR...md, K 25–K 28 summary (30 à 525 bar).

The same benchmark run also retrieved a GIB 26 booster table with safety-valve settings up to 520 bar, so the 525-bar compressor figure is higher than the retrieved booster figure. The relevant GIB passage explains that shutdown pressure is measured by the final-pressure sensor, while the safety-valve set pressure may be 365, 420, or 520 bar. Source: 0240-0074_gi-26-baureihe1...md.

The retrieval did not return the English K 25–K 28 table or a model-level 525-bar row. The answer is therefore supported by the French industry brochure passage, but multilingual/model-level source coverage should be improved before using it as a formal catalogue determination.

LibreChat output¶

Capture: fresh independent conversation; 85.36 seconds; 3,579 answer characters; temporary benchmark conversation removed after capture.

Based on the uploaded public Bauer documents, the highest documented maximum operating pressure is 550 bar, found in the VERTICUS and GIB series.

Evidence:¶

From File: 0066-2026_04_Accessory_Systems_EN_N39608_sc-898645140e_f5d5c6be43b84536a12e8e1923059d81.md, page 13:

“90 – 350 bar/420 bar/550 bar”

This appears in the context of BAUER’s P-PURIFICATION SYSTEMS, which are rated for use with compressed air/gas systems up to 550 bar. While not explicitly labeling this as a compressor maximum operating pressure, the context makes clear it refers to system pressure ratings compatible with BAUER compressors.

A more direct confirmation comes from File: 0369-0203_verticus-gib-series_2817b67e31-bf529df636_7acd05d5d7b54547a5b27b5f75abd384.md, where the VERTICUS and GIB series are described as high-pressure boosters and compressors. Although the exact “maximum operating pressure” value is not repeated on the page, the document’s technical context aligns with the 550 bar rating.

Additionally, File: 0150-High-pressure-accessories-catalogue_EN-8544a5e175_fde40c8ba21948d2ba0a516d2d50a62c.md (page 83–84) discusses high-pressure maintenance kits for compressors, referencing pressure classes consistent with 550 bar systems.

Compressors vs. Boosters:¶

Compressors (e.g., VERTICUS, GIB, PE-TE, MINI-VERTICUS) draw in ambient air/gas and compress it from atmospheric pressure to the final pressure.

Boosters (e.g., PE-VE, VERTICUS-VE) take pre-compressed gas (e.g., from a compressor at 30–100 bar) and further increase its pressure to the final level (e.g., up to 550 bar).

The distinction is important: a booster’s maximum operating pressure is the final discharge pressure it can achieve, but its inlet pressure is already elevated.

Shutdown Pressure vs. Maximum Operating Pressure:¶

The documents distinguish these concepts in safety contexts:

From File: 0022-2019-01_B-NEWS_EN_sc-e0ebbb5f8b_f6330ad118f54ef3a4e783164c63d866.md (page 2):

“In an emergency, safety valves on the inter-stage separators and a final pressure safety valve automatically open to release the pressure build-up.”

This indicates that shutdown pressure (or more precisely, safety valve actuation pressure) is set above the maximum operating pressure, to allow normal operation while providing overpressure protection. The safety valve opens only when pressure exceeds safe limits — i.e., shutdown pressure > maximum operating pressure.

No document explicitly defines “shutdown pressure” as a technical term, but the described behavior confirms that safety systems are designed to activate only when pressure exceeds the maximum operating pressure, not during normal operation.

Summary:¶

Highest documented maximum operating pressure: 550 bar

Applicable product families: VERTICUS, GIB, and associated high-pressure booster/compressor systems

Compressors vs. boosters: Compressors draw from ambient; boosters increase pressure from an already elevated inlet

Shutdown pressure: Not explicitly defined, but safety valves activate above maximum operating pressure to prevent overpressure — implying shutdown pressure > maximum operating pressure

Sources cited: - 0066-2026_04_Accessory_Systems_EN_N39608_sc-898645140e_f5d5c6be43b84536a12e8e1923059d81.md, p. 13
- 0369-0203_verticus-gib-series_2817b67e31-bf529df636_7acd05d5d7b54547a5b27b5f75abd384.md
- 0022-2019-01_B-NEWS_EN_sc-e0ebbb5f8b_f6330ad118f54ef3a4e783164c63d866.md, p. 2

B07 — Exact model technical-table lookup¶

Prompt¶

Find the Bauer model I 15.11-11-V in the uploaded documents. Report its free-air delivery, maximum operating pressure, number of stages, and motor output. Cite the exact technical-data table and preserve any relevant footnotes or limitations.

Codex output¶

The requested model row was not established from the retrieved passages. Two focused file searches returned related I-series and PE-VE material, but neither passage contained the I 15.11-11-V technical-data row with all four requested values and footnotes.

No values should be supplied from memory or inferred from neighboring models. This case is a retrieval failure and should be rerun after table-aware indexing or exact-keyword search is added.

LibreChat output¶

Capture: fresh independent conversation; 23.16 seconds; 636 answer characters; temporary benchmark conversation removed after capture.

The search did not return the specific technical-data table for the Bauer model I 15.11-11-V. Let me try a more targeted search focusing on model-specific data.

The model I 15.11-11-V was not found in the uploaded documents. I searched multiple times using variations of the model name and technical parameters, but no technical-data table or specifications for this exact model appear in the corpus.

If you have additional context—such as a brochure, datasheet, or catalog page where this model appears—I can help locate it more precisely. Otherwise, the answer is: not found in the uploaded Bauer Kompressoren documents.

B08 — Intelligent product discovery¶

Prompt¶

I do not know the Bauer product names. Find (1) a refrigeration dryer that significantly extends filter-cartridge life, can be integrated with MINI-VERTICUS or VERTICUS, and supports at least 500 bar; and (2) an automatic priority valve for filling from a compressor and storage system at 420 bar. Name the products, give their documented limits and functions, and cite the supporting sources.

Codex output¶

Automatic priority valve: B-SELECT was confirmed. The retrieved technical data gives a maximum inlet pressure of 420 bar. The pressure-maintaining-valve version has a 150–330 bar outlet range; the backpressure-regulator version reaches up to 414 bar. The source describes automatic filling use with compressor/storage arrangements. Source: 0071-B-SELECT_en...md.

Refrigeration dryer: the search retrieved a PE-VE options passage describing B-KOOL as a fully integrated refrigeration dryer that significantly extends filter-cartridge life. It did not retrieve a passage confirming integration specifically with MINI-VERTICUS or VERTICUS at 500 bar or more. The requested pressure/integration claim is therefore not established from this run. Source: 0064-2026-04_PE_VE_Industry_EN...md.

LibreChat output¶

Capture: fresh independent conversation; 91.59 seconds; 2,920 answer characters; temporary benchmark conversation removed after capture.

I have searched the available Bauer documentation for the requested products. Here is what I found:

(1) Refrigeration dryer for MINI-VERTICUS/VERTICUS supporting ≥500 bar and extending filter-cartridge life

No product matching all criteria—specifically a refrigeration dryer rated for ≥500 bar and explicitly documented as extending filter-cartridge life when integrated with MINI-VERTICUS or VERTICUS—was found in the provided files.

The files confirm: - The VERTICUS (420 bar) and MINI-VERTICUS (420 bar) compressors are designed for breathing air and can be integrated with various air treatment components (e.g., PX-FILTER, B-KOOL, B-SECURUS, P61/P81 purification systems) (source: 0367-0201_verticus1, 0279-0113_mini-verticus1, 0057-2026-04_B-Nitrox_EN). - The B-KOOL refrigeration dryer is listed as an optional feature for the VERTICUS and MARINER series (source: 0057-2026-04_B-Nitrox_EN), but its pressure rating is not explicitly stated in the retrieved excerpts. - The PX-FILTER system is rated up to 420 bar (source: 0066-2026_04_Accessory_Systems_EN). - The P61/P81 purification systems are mentioned as optional for longer cartridge life (source: 0057-2026-04_B-Nitrox_EN), but again, no explicit ≥500 bar rating or direct integration with MINI-VERTICUS/VERTICUS for that pressure is documented in the excerpts.

Therefore, while B-KOOL and other dryers are compatible with MINI-VERTICUS/VERTICUS up to 420 bar, no evidence was found for a refrigeration dryer rated for ≥500 bar with documented cartridge-life extension in the provided corpus.

(2) Automatic priority valve for filling from compressor and storage system at 420 bar

The B-SELECT automatic priority valve is documented as part of the filling and refueling control system, integrated with the central BAUER control unit (e.g., B-CONTROL), and is used for filling from storage systems (e.g., B80 at 330 bar) (source: 0066-2026_04_Accessory_Systems_EN). However, the retrieved excerpts do not specify its pressure rating as 420 bar.

The MINI-VERTICUS and VERTICUS compressors are rated for 420 bar (source: 0279-0113_mini-verticus1, 0367-0201_verticus1), and the B-SELECT is described as enabling fully automatic filling cycles and selector functions for storage systems, but the explicit 420 bar rating for B-SELECT is not confirmed in the provided documents.

In summary: - B-KOOL refrigeration dryer: Compatible with MINI-VERTICUS/VERTICUS up to 420 bar, but no evidence of ≥500 bar rating or explicit cartridge-life extension documentation in the provided files. - B-SELECT automatic priority valve: Integrated into 420 bar systems, but its pressure rating is not explicitly stated as 420 bar in the retrieved excerpts.

If you need further details, I recommend consulting the official BAUER B-KOOL and B-SELECT product brochures or contacting BAUER support directly.

B09 — BM family comparison¶

Prompt¶

Compare the Bauer BM series at 40 bar and 100 bar. For each family, report medium, maximum pressure, free-air-delivery range, and motor-power range. Explain which family is technically closer to a requirement for air at 90 bar and approximately 800 l/min. Cite both product sources.

Codex output¶

The public file search retrieved only a broad BM-family summary: 30–110 bar, 470–7,390 l/min, and 7.5–132 kW from 0060-2026-04_Compressors_for_Industry_EN...md. It did not retrieve separate BM 40 and BM 100 tables, so a trustworthy side-by-side public comparison cannot be completed from these passages.

The structured synthetic search selected SYN-BK-AIR-BM100-800 as the closest demo project because it uses air, delivers 800 l/min exactly, and its 100-bar pressure is sufficient for a 90-bar requirement. BM 40 projects were hard-excluded for insufficient pressure. This project result is synthetic; it does not replace the missing product-table evidence.

LibreChat output¶

Capture: resumable-stream recovery; 54.12 seconds; 2,036 answer characters; temporary benchmark conversation removed after capture.

Let me retrieve more detailed technical specifications for the BM 40 and BM 100 families to report medium, maximum pressure, free-air-delivery (FAD) range, and motor-power range.

Let me try to get details for the compressor families directly.

Let me search for product documentation to extract the full technical specifications (FAD and motor power ranges) for the BM 40 and BM 100 families.

Let me search more specifically for the BM family technical data.

Let me try to find the specific BM family brochure or data sheet.

Based on the available evidence, I can now summarize the findings.

From the synthetic demo data retrieved earlier:

BM 40 family:

Medium: air

Maximum pressure: 40 bar

Free-air-delivery (FAD) range: 500–800 l/min (per project SYN-BK-AIR-BM40-500 and SYN-BK-AIR-BM40-800)

Motor power: not explicitly stated in the demo data, but implied to be lower than BM 100 due to lower pressure rating.

BM 100 family:

Medium: air

Maximum pressure: 100 bar

Free-air-delivery (FAD) range: 500–800 l/min (per project SYN-BK-AIR-BM100-500 and SYN-BK-AIR-BM100-800)

Motor power: not explicitly stated in the demo data, but implied to be higher than BM 40.

For the requirement of 90 bar and ~800 l/min, the BM 100 family is technically closer, because: - Its maximum pressure (100 bar) exceeds 90 bar, whereas the BM 40 family’s maximum pressure (40 bar) is far below. - Both families can deliver up to 800 l/min, so capacity matches equally well. - The pressure margin (10 bar over requirement) is smaller than the gap for BM 40 (50 bar under requirement).

⚠️ Important disclaimer: All project and part data above are synthetic demo records from the Bauer Technical Twin demo and are not confirmed Bauer Kompressoren master data. The technical specifications (e.g., exact motor power ranges) were not explicitly provided in the demo data.

No product brochure or official technical data sheet containing exact motor-power ranges was found in the uploaded corpus.

B10 — B-DETECTION source reconciliation¶

Prompt¶

Compare B-DETECTION PLUS i/s with B-DETECTION PLUS m for a stationary fire-brigade filling station. Explain which is stationary and which is mobile, what they measure, their logging capabilities, and their documented pressure range. One public product page mentions 420 bar while a newer brochure describes options up to 450 bar. Explain the difference using source dates and wording instead of silently selecting one value.

Codex output¶

The comparison was not established from the retrieved passages. Two focused searches did not return the B-DETECTION PLUS i/s and m product passages containing the requested stationary/mobile distinction, measurement set, logging behavior, and dated 420/450-bar statements.

Because the benchmark explicitly requires source reconciliation, substituting general B-DETECTION knowledge or choosing one pressure without both passages would be unsafe. This case requires improved product-name retrieval and document-date metadata.

LibreChat output¶

Capture: fresh independent conversation; 680.81 seconds; 1,528 answer characters; temporary benchmark conversation removed after capture.

The search_bauer_twin tool returned no results for B-DETECTION PLUS i/s or m, and the file_search results did not contain direct product comparisons or specifications for these models.

Let me try a more targeted search for the B-DETECTION PLUS series and pressure ranges.

The search_bauer_twin tool returned only synthetic demo data (not real Bauer master data), and the file_search did not yield direct product specifications for B-DETECTION PLUS i/s and B-DETECTION PLUS m.

Let me try a more specific search for detection systems and logging capabilities.

I need to search for the specific B-DETECTION PLUS i/s and m models and their pressure ranges.

I need to search for the specific B-DETECTION PLUS i/s and m models and their pressure ranges.

I need to search for the specific B-DETECTION PLUS i/s and m models and their pressure ranges.

I need to search for the specific B-DETECTION PLUS i/s and m models and their pressure ranges.

I need to search for the specific B-DETECTION PLUS i/s and m models and their pressure ranges.

I need to search for the specific B-DETECTION PLUS i/s and m models and their pressure ranges.

I need to search for the specific B-DETECTION PLUS i/s and m models and their pressure ranges.

I need to search for the specific B-DETECTION PLUS i/s and m models and their pressure ranges.

I need to search for the specific B-DETECTION PLUS i/s and m models and their pressure ranges.

I need to search for the specific B-DETECTION PLUS i/s and m models and their pressure ranges.

B11 — B-SAFE safety limit¶

Prompt¶

Can B-SAFE be used to fill Nitrox cylinders at 300 bar? Answer yes or no based only on the uploaded Bauer documentation. State the documented limits separately for breathing air and Nitrox, cite the source, and do not infer compatibility beyond the stated limits.

Codex output¶

The answer was not established from the retrieved passages. Two focused searches did not retrieve a B-SAFE passage stating the separate breathing-air and Nitrox limits. The retrieved material included unrelated Nitrox equipment and an accessory-system passage, neither of which supports a yes/no B-SAFE conclusion.

No compatibility answer should be inferred. This exact safety-limit case should fail closed until the B-SAFE source is retrieved.

LibreChat output¶

Capture: fresh independent conversation; 18.94 seconds; 981 answer characters; temporary benchmark conversation removed after capture.

No.

The uploaded Bauer documentation does not specify B-SAFE’s compatibility with Nitrox or state explicit pressure limits for breathing air vs. Nitrox filling. It describes B-SAFE as a safety filling chamber for breathing air cylinders and emphasizes explosion protection, but does not define maximum operating pressure or gas type limits (e.g., O₂ content thresholds for Nitrox) in the retrieved excerpts.

Source:
- 0056-2025-06_Product_overview_EN_N37488_sc-32c67ebad8_d22e31e6bd9d4bb19c3ef2919b0ea227.md (B-SAFE safety filling chamber description) — mentions use with breathing air cylinders and explosion safety, but no pressure or gas-type limits.
- Other retrieved files mention compressor systems (e.g., MINI-VERTICUS) and purification systems for breathing air per DIN EN 12021, but do not link these to B-SAFE’s operational limits for Nitrox.

Therefore, based solely on the uploaded documentation, the answer is no — the required information is not provided.

B12 — German-English project consistency¶

Prompt¶

Run these as independent searches and compare them: English: Find the closest previous synthetic nitrogen booster project for 420 bar and approximately 500 l/min. German: Finde das aehnlichste synthetische fruehere Projekt fuer einen Stickstoff-Booster mit 420 bar und ungefaehr 500 l/min. Both should return the same project and equivalent reasoning.

Codex output¶

Both searches returned SYN-BK-N2-420-500 first. Both parsed nitrogen, 420 bar, 500 l/min, and booster topology and gave the same reasons: compatible medium, zero pressure difference, zero capacity difference, and matching topology.

Both returned SYN-BK-N2-420-450 second and excluded the same wrong-medium, insufficient-pressure, and wrong-topology projects. The small score difference between languages did not change ranking or reasoning. The consistency test passes for this synthetic demo query.

LibreChat output¶

Option B production capture: fresh independent conversation; 22.05 seconds; 1,468 answer characters; 22 July 2026.

Both searches—English and German—returned the same top match and consistent reasoning, confirming robust cross-language normalization in the synthetic demo.

Top match in both searches¶

Project ID: SYN-BK-N2-420-500

Name: Synthetic nitrogen booster package 420 bar / 500 l/min

Medium: nitrogen

Pressure: 420 bar, exact match

Capacity: 500 l/min, exact match

Topology: booster

Compressor family: N2 Booster

Match reasons: compatible medium, zero pressure difference, zero capacity difference, and matching topology

The second match in both searches was SYN-BK-N2-420-450, which has the same medium, pressure, and topology but is 50 l/min below the target capacity.

The German query correctly normalized Stickstoff to nitrogen. Both searches applied the same hard constraints and selected the same project.

Disclaimer: All records are synthetic demo data and not confirmed Bauer Kompressoren master data.

B13 — Exact certificate search¶

Prompt¶

Find the English EN ISO 3834-2 certificate for Bauer Kompressoren in Munich. Return the precise certificate title, organization, address, language, and source document. Do not substitute an ISO 9001 or ISO 14001 certificate.

Codex output¶

The requested certificate was not found in the retrieved passages. Two focused searches returned unrelated product, news, terms, and address material; none contained the English EN ISO 3834-2 certificate title and full certificate metadata.

No ISO 9001 or ISO 14001 substitute was used. This case exposes an exact-document retrieval gap and should be rerun after certificate metadata, document titles, and addresses are indexed as searchable fields.

LibreChat output¶

Capture: fresh independent conversation; 35.57 seconds; 944 answer characters; temporary benchmark conversation removed after capture.

The search did not return the precise EN ISO 3834-2 certificate for Bauer Kompressoren in Munich. Let me try a more targeted search.

The search still did not retrieve the precise EN ISO 3834-2 certificate for Bauer Kompressoren in Munich.

Let me try a broader search focusing on certificates and quality standards.

The search still did not retrieve the precise EN ISO 3834-2 certificate for Bauer Kompressoren in Munich.

Let me try a more specific search focusing on "welding" or "welding certification", since EN ISO 3834 is related to welding quality requirements.

The search still did not retrieve the precise EN ISO 3834-2 certificate for Bauer Kompressoren in Munich.

Given the repeated failures to locate the certificate, and the explicit instruction not to substitute an ISO 9001 or ISO 14001 certificate, I must conclude:

The EN ISO 3834-2 certificate for Bauer Kompressoren in Munich was not found in the uploaded documents.

B14 — Safe no-match behavior¶

Prompt¶

Find a previous synthetic helium booster project for 420 bar and approximately 500 l/min. Apply medium, pressure, and topology as mandatory constraints. If no compatible synthetic project exists, say so clearly. Do not return a nitrogen, air, or breathing-air project merely because its pressure and capacity are similar.

Codex output¶

No compatible synthetic helium project exists in the returned dataset.

The Option B structured service normalized helium, 420 bar, 500 l/min, and booster, then applied medium, pressure, and topology as hard constraints before ranking. It returned status: no_compatible_match, an empty result set, and explicit exclusions for the air, breathing-air, and nitrogen records. It did not call the embedding service because the structured constraints already proved that no eligible project existed.

LibreChat output¶

Option B production capture: fresh independent conversation; 9.85 seconds; 668 answer characters; one structured tool call; 22 July 2026.

No compatible synthetic helium booster project exists for 420 bar and approximately 500 l/min.

The search returned no_compatible_match, with all candidate projects excluded due to one or more mandatory constraints:

medium mismatch: air, breathing air, or nitrogen instead of helium;

insufficient pressure: 40, 100, 300, or 365 bar instead of 420 bar; or

topology mismatch: compressor or compressor-and-filling-station instead of booster.

The result is final under the medium, pressure, and topology constraints. All project records are synthetic demo data and not confirmed Bauer Kompressoren master data.

Comparative evaluation¶

Evaluation method¶

The captured Codex and LibreChat answers above were compared on four criteria:

factual correctness;
source discipline and separation of public documents from synthetic demo data;
coverage of the requested engineering task; and
usefulness and clarity for an engineer.

Correctness and source discipline take precedence over presentation. A longer or more polished answer is not considered better when it introduces an unsupported identifier, rating, compatibility rule, or engineering requirement.

This is a qualitative engineering assessment of the captured runs. It is not yet a Bauer-approved gold-standard evaluation, and a single result does not measure run-to-run variability.

Overall result¶

Result	Cases	Interpretation
Codex/direct-tool output better	9 of 14	More reliable grounding, constraint handling, and failure reporting
LibreChat output better	2 of 14	More complete or clearer presentation without changing the core result
Approximately equal	3 of 14	Both systems reached the same safe conclusion with similar evidence

LibreChat generally produced the more polished presentation. The direct-tool run was materially more reliable when exact identifiers, product limits, hard constraints, or missing evidence were involved.

Case-by-case result¶

ID	Better output	Finding
B01	LibreChat, slightly	It provided a more complete and demo-friendly system response. Some ventilation, standards, buffer-sizing, and integration statements were not established by the retrieved evidence and must be removed before a customer demonstration. The Codex answer was safer but less complete.
B02	Codex	LibreChat called `SYN-BK-N2-365-500` a compatible alternative and later rejected the same project because 365 bar does not satisfy the mandatory 420-bar requirement. Codex applied the pressure, medium, and topology constraints consistently.
B03	Codex	LibreChat added unsupported conclusions about wall thickness, motor changes, ASME/PED requirements, hydrotest pressure, and seismic support. Codex disclosed the comparison-tool error and limited its reconstruction to returned project records.
B04	Codex	LibreChat invented sensor identifiers that are not present in the Technical Twin catalogue. Codex returned the actual synthetic sensor records.
B05	Codex	LibreChat returned the nonexistent part `SYN-P-SNS-PRES-IND`. The relevant synthetic record is `SYN-P-SNS-PRESSURE-500`.
B06	Codex, decisively	Codex found the documented 525-bar K 25-K 28 compressor range. LibreChat promoted a 550-bar purification-accessory configuration into a maximum compressor rating, which the retrieved passage did not support.
B07	Draw	Neither system found the exact model table. Both avoided inventing the requested values. Codex gave the clearer retrieval-gap diagnosis.
B08	Codex	Codex retrieved the documented B-SELECT limits: 420-bar inlet, 150-330-bar pressure-maintaining outlet, and up to 414-bar backpressure. LibreChat did not recover these exact limits.
B09	Codex	LibreChat treated capacities in synthetic demo projects as official BM product-family ranges and inferred a motor-power difference without evidence. Codex kept synthetic project selection separate from missing public product-table evidence.
B10	Codex, decisively	LibreChat repeatedly searched for approximately 11 minutes 21 seconds and did not produce the requested reconciliation. Codex stopped with an explicit evidence gap.
B11	Codex	`Not established by the available documents` is more accurate than an unconditional `No`. Absence of a documented B-SAFE limit does not prove technical incompatibility.
B12	LibreChat, slightly	Both languages selected `SYN-BK-N2-420-500` and produced equivalent reasoning. LibreChat presented the bilingual rankings and comparison more completely.
B13	Draw	Both systems correctly reported that the requested EN ISO 3834-2 certificate was not found and did not substitute ISO 9001 or ISO 14001. Codex gave the more actionable indexing diagnosis.
B14	Draw	After Option B, both paths preserved helium, pressure, and topology, returned `no_compatible_match`, and did not substitute nitrogen or air. LibreChat used one structured call.

Option B verification¶

Option B was deployed to the existing Bauer Twin service without adding Railway infrastructure.

Check	Result
Local deterministic tests	24/24 passed
Local structured regression	19/19 passed
Live Railway structured regression	19/19 passed
Hard-filter violations	0
Result-status violations	0
PostgreSQL terminology aliases	74 loaded
MCP input contract	Open text for business vocabulary; strict action and numerical fields
B12 production Agent run	English and German returned `SYN-BK-N2-420-500`
B14 production Agent run	One call; `no_compatible_match`; no incompatible substitute

The resolver recognizes documented aliases but does not use unrestricted fuzzy guessing. synthetic nitrogen resolves to nitrogen because synthetic is an approved non-technical record qualifier. not nitrogen, mixed media, and unknown terms remain unresolved and return unknown_constraint.

Critical reliability findings¶

Invented identifiers¶

LibreChat produced the following identifiers even though they are not present in the Technical Twin catalogue:

SYN-P-SNS-PRES-IND
SYN-P-SEN-N2-420-500
SYN-P-SEN-COMM-N2-500

Relevant records that do exist include:

SYN-P-SNS-PRESSURE-500
SYN-P-SNS-TEMP-IND
SYN-P-SNS-DEWPOINT-BA

An identifier that resembles master data is a high-severity error even when the surrounding explanation is plausible. Project and part identifiers must be copied from tool results, never generated by the language model.

Incorrect maximum-pressure conclusion¶

The evidence retrieved during B06 distinguishes three different values:

K 25-K 28 compressor systems: up to 525 bar;
GIB 26 safety-valve settings in the retrieved material: up to 520 bar; and
one purification-accessory configuration: 550 bar.

LibreChat incorrectly used the accessory rating as proof of a 550-bar compressor. Component type and source context must therefore be validated before a numerical value is promoted into a product-level conclusion.

Synthetic and public evidence were mixed¶

Synthetic project records are suitable for demonstrating similarity search, structured filters, and project-to-part navigation. They are not evidence of Bauer's official product-family ranges, compatibility rules, motor powers, or released configurations. B03 and B09 show that the answer layer can currently cross this boundary even though the records carry a synthetic-data disclaimer.

Hard constraints were not consistently rechecked¶

B02 captured a ranking/answer consistency failure: a 365-bar project was first presented as compatible with a mandatory 420-bar request and later rejected. Option B now applies medium, minimum pressure, topology, family, and category exclusions before ranking and prevents an exact identifier from bypassing those constraints. B02 still requires a fresh production Agent capture before its demo output is approved.

Failure recovery needs a fixed stopping rule¶

The median LibreChat response time across the captured runs was approximately 33 seconds. B10 took approximately 681 seconds and still did not return a completed comparison. B09 used a resumed connection, so its recorded segment is not directly comparable.

The Bauer Agent now limits file_search and Bauer Twin search to two focused calls each, forbids identical retries, and treats no_compatible_match and unknown_constraint as final. B10 still needs a fresh capture to verify that these controls stop the previously observed long recovery loop.

Bauer demonstration recommendation¶

The strongest current demonstration candidates are:

B01, after removing unsupported engineering and buffer-sizing details;
B12, to demonstrate consistent German and English project retrieval;
B14, to demonstrate safe rejection of an incompatible medium; and
B02, after correcting the compatible-alternative logic.

B07 and B13 are useful as failure-safety tests, but they are not strong positive customer-demo examples.

Do not use the current LibreChat outputs for B03, B04, B05, B06, B09, or B10 in a Bauer demonstration until their grounding and recovery problems are corrected.

Required controls before customer use¶

Validate structured claims: reject every project ID, part ID, score, and compatibility statement that cannot be matched to the structured tool response.
Preserve source type: label each claim as public-document evidence, synthetic demo data, or an explicit engineering inference.
Recheck hard constraints: the structured layer now enforces medium, pressure, topology, family, and category before ranking; rerun B02 to verify the answer layer presents the exclusions consistently.
Validate numerical context: keep compressor, accessory, safety-valve, shutdown, and test-pressure values in their original component and operating context.
Limit recovery loops: the Agent call budget and terminal statuses are deployed; rerun B10 to validate elapsed-time behaviour under a missing-evidence case.
Add exact retrieval: index model names, document titles, certificate metadata, addresses, and technical-table fields for lexical and metadata search alongside vector search.
Create a gold set: have Bauer validate expected answers and accepted sources, then run each prompt repeatedly to measure correctness, consistency, latency, and safe refusal.

Open Questions¶

Should the LibreChat comparison capture use a fixed model seed or repeated runs to measure answer variability?
Should exact-table and certificate cases use a separate lexical or metadata index in addition to vector retrieval?
Should the benchmark publish expected gold answers after Bauer validates the source corpus?
Which team owns review and release approval for new terminology aliases as Bauer vocabulary expands?
Does the captured compare_projects serialization defect still reproduce on the current service revision?

Sources¶

Bauer Kompressoren problem-statement email supplied for the demonstration.
BAUER KOMPRESSOREN Technical Twin Organisation Report supplied for the demonstration.
Deployed LibreChat RAG API, authorized query_multiple searches in Railway testing, captured 21 July 2026.
Deployed Bauer Twin API, structured search/detail/compare actions, open terminology contract, MCP round trip, and B12/B14 Agent runs in Railway testing, captured 22 July 2026.
Indexed public Bauer documents cited by filename within each benchmark output.
Synthetic part and project catalogue used by the deployed Bauer Twin service, checked for identifier validity during comparative evaluation.

Parameter	Value	Notes
Medium	Nitrogen	✅ Exact match
Pressure	420 bar	✅ Exact match
Capacity	500 l/min	✅ Exact match
Topology	Booster	✅ Exact match
Cooling	Water-cooled	✅ Typical for high-pressure nitrogen boosters
Control Package	B-CONTROL MICRO synthetic configuration	✅ Standard for high-pressure nitrogen systems
Purification Package	Synthetic nitrogen-compatible filtration package	✅ Required for nitrogen purity
Storage/Filling Package	Synthetic 420-bar storage and filling package	✅ Compatible with final pressure

Project ID	Name	Pressure	Capacity	Cooling	Notes
`SYN-BK-N2-420-450`	Synthetic nitrogen booster package 420 bar / 450 l/min	420 bar	450 l/min	Air-cooled	Slightly lower capacity; air-cooled variant available
`SYN-BK-N2-365-500`	Synthetic nitrogen booster package 365 bar / 500 l/min	365 bar	500 l/min	Not specified	Excluded due to insufficient pressure (365 < 420 bar) — see rejection list below

Project ID	Reason for Exclusion
`SYN-BK-AIR-BM100-500`	Medium mismatch (air vs nitrogen), insufficient pressure (100 bar), topology mismatch (compressor vs booster)
`SYN-BK-AIR-BM40-500`	Medium mismatch (air), insufficient pressure (40 bar), topology mismatch
`SYN-BK-BA-300-500`	Medium mismatch (breathing air), insufficient pressure (300 bar), topology mismatch (filling station)
`SYN-BK-BA-420-500`	Medium mismatch (breathing air), topology mismatch (filling station)
`SYN-BK-N2-365-500`	Insufficient pressure (365 bar < 420 bar) — closest nitrogen alternative below target pressure

Attribute	Value
Application sector	Industrial gas
Medium	Nitrogen
Capacity	500 l/min
Compressor family	N2 Booster
Topology	Booster
Cooling	Water-cooled
Control package	B-CONTROL MICRO synthetic configuration
Purification package	Synthetic nitrogen-compatible filtration package
Installation	Indoor skid, service access on three sides
Operating environment	Temperate industrial (5–40 °C)
Standards	CE demo assumption, four-eyes engineering review required

Component	Potential Impact
Compressor housing/stages	Higher differential pressure may require reinforced casings, revised clearances, or upgraded bearings/seals
Intercoolers / aftercoolers	May require re-sizing to handle higher discharge temperature; pressure rating must be ≥420 bar
Storage vessels & piping	Must be re-qualified for 420 bar (e.g., ASME BPVC Section VIII Div. 1 design, wall thickness, hydrotest at ≥462 bar)
Valves & fittings	All high-pressure valves (e.g., check, shut-off, relief) must be rated for ≥420 bar
Safety systems (PSVs, sensors)	Relief valve set points and sensor ranges must be updated; potential need for redundant high-pressure shutdown
Electrical drive system	Motor power/torque may increase; VFD settings may need recalibration

Document ID	Likely Relevance
DOC-B-NITROX	Nitrogen-specific design assumptions; may include pressure-dependent material limits
DOC-INDUSTRY	Industry-specific standards (e.g., ISO 13485, CGA, or local pressure equipment directives)
DOC-PRODUCT-OVERVIEW	General product family specs; may list max pressure limits per model

Assumption	Reason for Review
CE demo assumption	CE marking for 420 bar may require Notified Body involvement if pressure-volume product exceeds PED Category III thresholds
Four-eyes engineering review required	Mandatory for pressure boundary changes; must include mechanical integrity, fatigue, and seal performance review
Water-cooled topology unchanged	Higher discharge temps at 420 bar may challenge cooling capacity; verify thermal balance
Filtration package compatibility	High-pressure filtration media may degrade faster; confirm life-cycle and particulate retention at 420 bar
Skid structural integrity	Increased weight and loads may require re-analysis of mounting, vibration, and seismic support

ID	Title	Type	Source URL	Filename
`DOC-B-NITROX`	B-NITROX brochure	Brochure	Link	`2026-04_B-Nitrox_EN_N34460_sc.pdf`
`DOC-INDUSTRY`	Compressors for Industry brochure	Brochure	Link	`2026-04_Compressors_for_Industry_EN_N39771_sc.pdf`
`DOC-PRODUCT-OVERVIEW`	BAUER product overview	Catalogue	Link	`2025-06_Product_overview_EN_N37488_sc.pdf`

Type	Status	Notes
Parts	Synthetic only	All part IDs prefixed `SYN-P-…`, explicitly marked `synthetic: true`, and not real Bauer part numbers
Project	Synthetic only	Project ID `SYN-BK-N2-420-500`, marked `synthetic: true`, not a real project
Documents	Genuine public Bauer documents	All linked to real URLs and filenames from Bauer’s website

Bauer Retrieval Benchmark¶

How to use this page¶

Benchmark map¶

B01 — Complete fire-brigade request¶

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B02 — Similar nitrogen project¶

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Closest Previous Synthetic Nitrogen Booster Project for 420 bar / ~500 l/min¶

Next Two Compatible Alternatives¶

Important Candidates Rejected¶

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Important Disclaimer¶

B03 — Fine-difference comparison¶

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✅ Matching Attributes (Unchanged)¶

🔁 Changed Attributes (Due to Pressure Increase: 365 → 420 bar)¶

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Project Summary: SYN-BK-N2-420-500¶

Linked Parts (Grouped by Category)¶

✅ Compressor¶

✅ Control¶

✅ Purification¶

✅ Cooling¶

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✅ Storage/Filling¶

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Part Number: SYN-P-SNS-PRES-IND¶

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B06 — Maximum-pressure factual search¶

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Part Number: `SYN-P-SNS-PRES-IND`¶