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Pressure Transducers
QPress – QOM-REF 3100 Series
The QOM-REF 3100 Series is a compact OEM transducer suited to refrigeration and HVAC pressure points. A 316L-stainless wetted section measures to 50 bar, and 1800 V electrical isolation protects the signal in electrically noisy plant rooms and on inverter-driven equipment. With a 4–20 mA output, a choice of refrigeration-style connections and EMC compliance, it gives equipment builders a dependable, interference-resistant reading for condensing units, chillers and packaged refrigeration.
Measurement range
0–50 bar
Accuracy
±0.5 % FS
Output / communications
4–20 mA
Process connection
BSP / NPT threaded options
Process temperature
−20 to 80 °C
Approvals / Protection
IP65
Technical Specifications
| Pressure type | Gauge; Absolute; Sealed gauge |
|---|---|
| Repeatability | ≤ ±0.1 % FS |
| Response time | < 100 ms |
| Max. working pressure | Overpressure 200 % FS; Burst 300–500 % FS |
| Process / ambient temperature | −20…80 °C (ambient); −30…105 °C (media); −40…120 °C (storage) |
| Power supply | 5 V DC; 9–30 V DC; 12–30 V DC |
| Outputs | 4–20 mA; 0–10 V; 0.5–4.5 V |
| Environmental rating | IP65 |
| Electrical connection | Cable; M12; Mini-DIN; Packard |
| Housing material | 304 stainless steel |
| Weight | 50–90 g |
| Other ratings / standards | Vibration: Sine 20 g (25 Hz–2 kHz), Random 7.5 g rms (5 Hz–1 kHz); Shock: 10 g/11 ms; 1 m free fall |
Key Features
- 1800 V isolation and EMC compliance keep the reading clean on inverter-driven refrigeration plant.
- 316L wetted parts and refrigeration-style connections suit chillers, condensing units and packaged plant.
- IP65 ingress protection for demanding environments.
- ±0.5% FS accuracy for dependable measurement.
- Fast < 100 ms response for dynamic measurement.
Typical Applications
- Refrigeration Systems
- Air-Conditioning
- Air Compressors
- Hydraulic & Pneumatic Equipment
- Servo Valves