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Pressure Transducers
QPress – QHY-DIFF-OXY 5300 Series
The QHY 5300 Series is an oxygen-compatible differential-pressure transmitter for duties where cleanliness of the wetted path matters. A 316L-stainless diaphragm measures differential pressure from 0.4 to 35 bar, with 4–20 mA and voltage outputs and dual G1/4 or 1/4 NPT female ports. Prepared for oxygen service and housed in an ingress-protected case, it suits medical-gas, analytical and clean-process panels that need a differential reading without contaminating the media.
Measurement range
0.4…35 bar DP
Accuracy
±0.5 % FS
Output / communications
4–20 mA
Process connection
BSP / NPT threaded options
Process temperature
−30 to 80 °C
Approvals / Protection
CE / UKCA / RoHS, IP65
Technical Specifications
| Pressure type | Differential |
|---|---|
| Max. working pressure | Positive side ≤ 200 % FS; negative side: no overpressure allowed; Max static pressure ≤ 200 bar |
| Process / ambient temperature | −30 to +80 °C (B1/B11); −20 to +70 °C (B2 PE); −20 to +80 °C (B2 PUR); Storage −40 to +120 °C (B1/B11); −20 to +85 °C (B2) |
| Power supply | 15–28 V DC |
| Outputs | 4–20 mA (2‑wire); 0–5 V; 1–5 V; 0–10 V |
| Environmental rating | IP65 |
| Electrical connection | 4‑pin connector; Cable |
| Housing material | Stainless steel 304/316L |
| Weight | ≤ 400 g |
| Other ratings / standards | Reversed‑polarity and transient protection; EMI protection features |
Key Features
- Oxygen-prepared 316L diaphragm suits medical-gas, analytical and clean-process differential duty.
- 0.4–35 bar differential with 4–20 mA or voltage output and twin G1/4 or 1/4 NPT ports.
- IP65 ingress protection for demanding environments.
- ±0.5% FS accuracy for dependable measurement.
- Operates across −30 to 80 °C.
Typical Applications
- Medical & Pharmaceutical Oxygen
- Aerospace Oxygen Lines
- Firefighting Systems
- Oxygen Gas Measurement