PERIC GRS-Fxx Hydrogen-Oxygen Gas Calibration Generator

Overview

The PERIC GRS-Fxx Hydrogen-Oxygen Gas Calibration Generator is an integrated, portable electrochemical standard gas generator engineered for traceable calibration of hydrogen and oxygen analyzers in field and laboratory environments. It operates on the principle of controlled water electrolysis—splitting deionized water into stoichiometrically precise H₂ and O₂ gases under regulated current and temperature conditions. These generated gases are then mixed with user-supplied carrier gases (ambient air, nitrogen, oxygen, or hydrogen) to produce certified reference gas mixtures at defined concentrations and flow rates. Unlike conventional cylinder-based calibration methods, the GRS-Fxx eliminates high-pressure gas handling, storage logistics, and associated safety hazards—making it particularly suitable for routine verification, bump testing, and periodic calibration in nuclear facilities, industrial process plants, and metrology laboratories where regulatory compliance and operational safety are critical.

Key Features

• Electrolytic gas generation: Produces high-purity H₂ and O₂ from deionized water without catalysts or consumables—ensuring long-term stability and minimal maintenance.
• Multi-gas configuration: Supports five standard calibration gas matrices: H₂-in-air, H₂-in-N₂, H₂-in-O₂, O₂-in-N₂, and O₂-in-H₂—each programmable via touchscreen interface.
• Flow-controlled output: Delivers calibrated gas at ≤500 mL/min with mass-flow regulation and real-time feedback; flow accuracy maintained within ±2% FS over full range.
• Portable roll-cased architecture: Integrated lithium-ion battery enables >8 hours of continuous operation; ruggedized enclosure with 6 mm push-to-connect copper gas fittings and IP54-rated environmental protection.
• Real-time system monitoring: Industrial-grade resistive touchscreen displays live parameters—including electrolysis voltage, cell temperature, pressure differential, battery charge level, and alarm status—with configurable thresholds and event logging.
• Integrated gas conditioning: Built-in condensate trap, particulate filter, and hydrophobic membrane ensure dry, particle-free output gas—critical for sensor integrity and measurement repeatability.

Sample Compatibility & Compliance

The GRS-Fxx is compatible with all electrochemical, thermal conductivity (TCD), paramagnetic, and catalytic bead-type hydrogen and oxygen analyzers requiring zero/span calibration or functional verification. Its output gas composition and concentration uncertainty (≤2% FS) meet the traceability requirements outlined in ISO/IEC 17025:2017 for calibration laboratories. While not a certified reference material (CRM) generator per ISO 6142, its performance aligns with ASTM D6299-22 guidelines for instrument calibration verification in process safety systems. The device supports GLP-compliant operation through timestamped calibration logs and user-accessible audit trails—facilitating internal quality audits and preparation for FDA 21 CFR Part 11–aligned validation protocols where electronic records are required.

Software & Data Management

The GRS-Fxx employs embedded firmware with a serial communication interface (RS-232/USB-C) for remote parameter configuration and data export. All calibration events—including date/time stamp, selected gas matrix, target concentration, actual delivered concentration, flow rate, ambient temperature/humidity, and operator ID—are stored locally in non-volatile memory. Exportable CSV logs support integration into LIMS or CMMS platforms. Firmware updates are performed via secure USB drive with digital signature verification. No cloud connectivity or proprietary software installation is required—ensuring data sovereignty and compatibility with air-gapped industrial networks.

Applications

• Nuclear power plants: On-site calibration of fixed H₂ monitors in containment buildings and turbine halls—replacing hazardous compressed gas cylinders and reducing outage-related downtime.
• Petrochemical refineries: Verification of online hydrogen purity analyzers in hydrotreater units and reformer off-gas streams under ATEX Zone 2 conditions (when used with appropriate barrier-certified accessories).
• Pharmaceutical manufacturing: Qualification of dissolved oxygen sensors in bioreactor control systems per USP <1251> and Annex 1 requirements.
• Metrology institutes: Secondary standard generation for inter-laboratory comparison exercises involving low-concentration H₂/O₂ gas analyzers.
• Mining and tunneling operations: Functional testing of portable multi-gas detectors prior to entry into confined spaces—meeting MSHA and OSHA 1910.146 criteria.

FAQ

Does the GRS-Fxx generate certified reference gas?

No—it produces metrologically traceable calibration gas mixtures for instrument verification, not CRM-grade gases compliant with ISO 6142. Its output is intended for functional calibration, not primary standard assignment.
Can it be used with third-party analyzers?

Yes—its standardized 6 mm push-to-connect gas outlet and stable flow profile ensure compatibility with any analyzer accepting 500 mL/min input flow and requiring ppm–% level H₂/O₂ standards.
What maintenance does the electrolysis cell require?

Annual replacement of the PEM membrane and electrode stack is recommended after 2,000 operating hours; deionized water must be replenished before each use.
Is firmware upgrade supported in the field?

Yes—updates are distributed as signed .bin files via USB flash drive with built-in cryptographic verification to prevent unauthorized modification.
Does it comply with electromagnetic compatibility (EMC) standards?

The unit meets IEC 61326-1:2022 Class B emission and immunity requirements for industrial environments, with test reports available upon request.