ANALOX HYP-MO2HBYY03 Portable Partial Pressure Oxygen (pO₂) Analyzer

Overview

The ANALOX HYP-MO2HBYY03 is a certified portable partial pressure oxygen (pO₂) analyzer engineered for mission-critical monitoring in hyperbaric and subsea environments. Unlike concentration-based O₂ analyzers, the HYP-MO2HBYY03 measures oxygen partial pressure directly using a temperature-compensated electrochemical Clark-type sensor — a requirement for accurate physiological risk assessment under elevated ambient pressure. This principle ensures that displayed values reflect the actual partial pressure (in bar) to which personnel are exposed — a parameter directly correlated with oxygen toxicity thresholds defined in Diving Medical Guidance Notes (DMGN), IMCA D 022, and NOAA Diving Manual protocols. Its compact, IP67-rated enclosure meets MIL-STD-810G mechanical shock and vibration requirements, and its pressure-tolerant design enables reliable operation across the full 0.8–60 bar absolute range — encompassing saturation diving systems, submarine escape modules, hyperbaric treatment chambers, and pressurized rescue bell operations.

Key Features

• True partial pressure measurement (0–2 bar ppO₂) — compliant with ISO 8573-1 Class 1 for breathing gas analysis and EN 14175-2 for laboratory gas analyzers
• Electrochemical sensor (Analox 9100-9212-5H) with built-in temperature compensation and automatic barometric correction
• Ruggedized aluminum housing rated IP67; tested for immersion up to 1 m for 30 min and operational at depths equivalent to 600 meters seawater (MSW)
• High-contrast backlit LCD display with large numeric readout (4-digit, 0.01 bar resolution) optimized for gloved-hand use in low-light conditions
• Self-diagnostics including sensor health check, battery voltage monitoring, and calibration status flagging
• Calibration traceable to NIST-certified gas standards; supports two-point calibration (zero air + certified span gas) via front-panel interface
• No external power required — operates exclusively on standard 9 V PP3 battery with 800-hour continuous runtime

Sample Compatibility & Compliance

The HYP-MO2HBYY03 is validated for direct sampling of compressed breathing gases (heliox, trimix, nitrox), chamber atmospheres, and closed-loop life support systems. It complies with key regulatory frameworks governing hyperbaric safety: IMCA D 022 (Requirements for Oxygen Monitoring Equipment in Saturation Systems), DNVGL-RP-F115 (Subsea Production Systems – Breathing Gas Quality), and US Navy Diving Manual Rev.7 Annex C-5. The instrument satisfies GLP/GMP audit requirements through documented calibration records, user-accessible calibration logs, and non-volatile memory retention of last calibration date, operator ID, and gas standard lot numbers. It is CE-marked under Directive 2014/30/EU (EMC) and 2014/34/EU (ATEX Category 2G for Zone 1 hazardous areas when used with optional probe 9100-9212-2).

Software & Data Management

While the HYP-MO2HBYY03 operates as a standalone field instrument, optional RS232 or Bluetooth-enabled data logging modules (sold separately) allow time-stamped ppO₂ output to be captured in CSV format for post-mission review. All logged data includes sensor temperature, battery voltage, and internal diagnostic flags — enabling full traceability per ISO/IEC 17025 clause 7.7. Calibration history is stored onboard with write-protected timestamps and cannot be modified without physical access to the service menu — supporting FDA 21 CFR Part 11 compliance when integrated into validated hyperbaric control systems.

Applications

• Real-time ppO₂ verification in manned hyperbaric chambers during therapeutic recompression or saturation diving operations
• Independent backup O₂ monitoring in diving bells and pressurized rescue vehicles per IMCA D 013 redundancy mandates
• In-situ verification of scrubber efficiency and gas mixing integrity in closed-circuit rebreathers (CCR) and submarine atmospheric control units
• Periodic validation of primary chamber O₂ monitors during GLP-compliant medical trials
• Field verification of oxygen partial pressure in high-pressure storage cylinders prior to deployment

FAQ

Is the HYP-MO2HBYY03 suitable for use in explosive atmospheres?

Yes — when equipped with the intrinsically safe probe model 9100-9212-2, the system meets ATEX II 2G Ex ib IIB T4 Gb and IECEx Ex ib IIB T4 Gb certification for Zone 1 gas group IIB environments.
Does the analyzer require periodic recalibration?

Yes — annual calibration is recommended per ISO/IEC 17025 and manufacturer guidelines; however, functional checks with zero air and 1.00 bar ppO₂ span gas should be performed before each operational shift.
Can the device measure oxygen in helium-rich mixtures?

Yes — the Clark-type sensor responds to oxygen partial pressure regardless of background gas composition, making it suitable for heliox and hydreliox applications without cross-sensitivity correction.
What is the maximum allowable decompression rate during operation?

The unit is rated for pressure changes up to 2 bar/minute; exceeding this may induce transient thermal gradients affecting short-term accuracy until thermal equilibrium is restored.
Is firmware upgrade supported in the field?

Firmware updates require authorized service center intervention using proprietary ANALOX diagnostic hardware; no user-upgradable firmware is provided to maintain regulatory validation integrity.