HengaoDe H162677-50 Digital Oxygen Analyzer for Ampoules and High-Pressure Gas Systems
| Brand | HengaoDe |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Authorized Distributor |
| Country of Origin | China |
| Model | H162677-50 |
| Price | USD 28.50 (FOB) |
| Operating Temperature | 1–40 °C |
| Relative Humidity | ≤85% RH |
| Response Time | 30 s |
| Sensor Lifetime | 18 months |
| Accuracy | ±3% FS |
| Power Supply | DC 220 V |
| Control Output Contact Rating | ≤1 A |
| Alarm Interval | 3 min (20 s audible/visual alert) |
| Oxygen Resolution | 0.01% |
Overview
The HengaoDe H162677-50 Digital Oxygen Analyzer is a microprocessor-controlled paramagnetic and electrochemical hybrid sensing platform engineered for precise, real-time measurement of oxygen concentration in gaseous environments—particularly within sealed pharmaceutical containers (e.g., ampoules, vials), high-pressure oxygen chambers, anesthesia circuits, hydrogen production lines, and nitrogen/oxygen separation systems. Unlike conventional galvanic cells, this instrument integrates temperature-compensated electrochemical detection with digital signal processing to deliver stable baseline performance across variable pressure and flow conditions. Its design complies with ISO 8573-1:2010 (compressed air purity classes) and supports continuous monitoring in GMP-compliant cleanrooms where residual oxygen in inert-purged packaging directly impacts product shelf life and sterility assurance.
Key Features
- High-resolution digital display with 0.01% O2 readability across 0–100% vol range
- Programmable upper/lower alarm thresholds with dual-channel relay outputs (SPDT, 1 A resistive load)
- Non-volatile memory retains calibration data and user-defined setpoints after power cycling
- Integrated acoustic-optical alarm system with configurable duty cycle (20 s burst every 3 min)
- Robust aluminum-alloy housing rated IP54 for operation in humid laboratory and industrial control rooms
- Modular sensor cartridge design enables field replacement without recalibration tools
Sample Compatibility & Compliance
The analyzer is validated for direct insertion into pressurized gas streams up to 1.2 MPa (174 psi) and compatible with stainless-steel sampling manifolds per ASTM D6299-22 (standard practice for laboratory quality control evaluation). It meets the functional requirements of USP for container closure integrity testing (CCIT) when deployed in post-sterilization ampoule leak detection workflows. For pharmaceutical applications, it supports audit-ready documentation under FDA 21 CFR Part 11 when paired with optional RS485 Modbus RTU logging interfaces and timestamped event records.
Software & Data Management
While the H162677-50 operates as a standalone analog controller, its optional RS485 interface (9600–38400 bps) enables integration into SCADA or LIMS platforms using standard Modbus RTU protocol. Logged data includes real-time O2 %, timestamp, alarm status, and sensor health diagnostics (e.g., voltage drift, response decay rate). All communication adheres to IEC 61158-2 physical layer specifications. No proprietary software installation is required; raw ASCII telemetry can be parsed via Python scripts or Excel Power Query for trend analysis, SPC charting, and deviation reporting aligned with ISO 9001:2015 Clause 8.5.2.
Applications
- Residual oxygen quantification in lyophilized drug ampoules prior to rubber stopper crimping
- Continuous O2 monitoring in hyperbaric oxygen therapy chambers (ASTM F2777-19 compliance)
- In-line verification of nitrogen purge efficacy during API synthesis reactor blanketing
- Process validation support for ISO 11135-1:2014 ethylene oxide sterilization cycles
- Boiler feedwater deaeration system feedback control in power generation facilities
FAQ
Is the sensor certified for Class 1 Div 2 hazardous locations?
No—this unit is rated for general-purpose use only (IEC 60079-0 non-certified). For explosive atmospheres, consult the ATEX-certified H162677-EX variant.
Can the device measure oxygen in liquid-phase samples?
No—it is strictly configured for gas-phase analysis. Dissolved oxygen (DO) measurement requires optical or polarographic probes per ISO 5814:2012.
What calibration gases are recommended?
Certified NIST-traceable zero gas (99.999% N2) and span gas (20.9% O2 in N2) per ISO 6141:2015. Calibration interval: quarterly or after 500 hours of cumulative operation.
Does the instrument support automatic temperature compensation?
Yes—integrated Pt100 RTD provides continuous thermal correction across the full operating range (1–40 °C), eliminating manual offset adjustments.
How is sensor lifetime defined?
18 months represents typical electrochemical cell service life under continuous operation at ambient temperature and ≤60% RH. Exposure to >85% RH or halogenated solvents reduces longevity.
