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Pressure Transducers
QPress – QHY-GOLD 2100 Series
The QHY-GOLD 2100 Series is a hydrogen-compatible pressure transmitter built around a gold-plated 316L diaphragm for clean-gas and energy systems. The gold-plated wetted surface supports hydrogen-duty service, and the sensor reads ranges from 0.25 to 70 bar at up to ±0.25 % FS with a 4–20 mA output. Threads including M20x1.5, G1/4, G1/2 and NPT 1/4 suit power, energy and semiconductor applications where a clean, high-accuracy gas reading is needed.
Measurement range
0–0.25 bar to 0–70 bar
Accuracy
±0.25 % FS
Output / communications
4–20 mA
Process connection
BSP / NPT / Metric threaded options
Process temperature
−30 to 85 °C
Approvals / Protection
CE / RoHS, IP65
Technical Specifications
| Pressure type | Gauge; Absolute; Sealed gauge |
|---|---|
| Max. working pressure | ≤1.5 × FS |
| Process / ambient temperature | −30 to 85°C (B1/B4); −20 to 70°C (B2 PE/PVC); −20 to 80°C (B2 PUR) |
| Power supply | 3.2–5 V; 5–10 V; 12–28 V; 15–28 V |
| Outputs | 4–20 mA (2‑wire); 0–10 V; 0–5 V; 1–5 V; 0.5–4.5 V; 0.5–2.5 V |
| Environmental rating | IP65 |
| Electrical connection | Hirschmann 4‑pin; Cable; M12 4‑pin |
| Housing material | SS304/SS316L |
| Other ratings / standards | Insulation resistance ≥ 100 MΩ @ 500 V DC |
Key Features
- Gold-plated 316L diaphragm selected for hydrogen-compatible measurement on clean gas systems.
- Covers 0.25 to 70 bar ranges with high ±0.25 % FS accuracy and a 4–20 mA output.
- Threads including M20x1.5, G1/4, G1/2 and NPT 1/4 for power and electronics duty.
- IP65 ingress protection for demanding environments.
- Operates across −30 to 85 °C.
Typical Applications
- Hydrogen production
- Hydrogen storage
- Fuel cells
- Industrial gas systems