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Pressure Transducers
QPress – QOM-SMART 2300 Series
The QOM-SMART 2300 Series is a high-accuracy smart pressure transmitter that pairs a piezoresistive sensor with digital temperature compensation and non-linear correction. It spans vacuum to 100 MPa and reaches ±0.25 % FS, with 4–20 mA, HART and RS485 Modbus RTU outputs so one model serves analogue loops and digital networks. A choice of stainless and exotic wetted materials and an IP65 housing suit water, chemical and power-plant process duty. Choose the 2300 for loop-powered plant on HART or Modbus; the QOM-SMART 2340 suits battery telemetry and the 4600 adds an on-board display.
Measurement range
−1…0 bar to 0.1…1000 bar
Accuracy
±0.5 % FS
Output / communications
4–20 mA, HART and Modbus RTU / RS485
Process connection
Configurable process connection
Process temperature
−30 to 80 °C
Approvals / Protection
CE / RoHS, IP65
Technical Specifications
| Pressure type | Gauge; Absolute; Sealed gauge; Positive/Negative |
|---|---|
| Process / ambient temperature | −30…80 °C (B1,B3); −20…70 °C (B2 PE/PVC); −20…80 °C (B2 PUR) |
| Power supply | 10–28 V DC; 12–30 V DC |
| Outputs | 4–20 mA; RS485 (ASCII); RS485 (MODBUS RTU); HART |
| Environmental rating | IP65 |
| Electrical connection | B1; B2; B3 |
| Housing material | SS304/SS316L/Ti; PE/PUR cable |
| Other ratings / standards | Insulation resistance ≥ 100 MΩ / 500 VDC |
Key Features
- Digital temperature compensation and non-linear correction give ±0.25 % FS across wide ranges.
- 4–20 mA, HART and RS485 Modbus RTU let one model serve analogue loops and digital networks.
- SS316L/Ta/Ti; SS304/SS316L/Hastelloy C/Ti wetted parts for broad media compatibility.
- IP65 ingress protection for demanding environments.
Typical Applications
- Hydrology and water resources
- Petrochemical
- Electric power
- Machinery manufacturing
- Hydraulic & pneumatic control