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Process Transmitters
QPress – QHP-SEAL 5400 Series
The QHP-SEAL 5400 Series is a smart HART process pressure transmitter fitted with remote diaphragm seals for hot, viscous and corrosive media that cannot reach a standard sensor. A 100:1 turn-down and ±0.1 % of reading suit a wide span of process points, and it offers 4–20 mA with HART and Modbus RTU for analogue and digital control. An IP66 and IP67 housing with flange, M44, G1 or G2 connections fits chemical and food-process plant.
Measurement range
−1…100 bar
Accuracy
±0.1 % SPAN (TD≤5)
Output / communications
4–20 mA, HART and Modbus RTU / RS485
Process connection
Flanged / configurable
Process temperature
−50 to 85 °C
Approvals / Protection
ATEX / IECEx, up to IP67
Technical Specifications
| Pressure type | Gauge; Absolute |
|---|---|
| Response time | ≤100 ms |
| Max. working pressure | GP‑T: 10 / 40 / 60 / 150 / 200 bar; AP‑T: 10 / 40 / 60 bar |
| Process / ambient temperature | Without LCD −50…85 °C; With LCD −40…70 °C |
| Power supply | 18.3–44 V DC; IS 18.3–30 V DC |
| Outputs | 4–20 mA (HART) |
| Environmental rating | IP66; IP67 |
| Electrical connection | M20×1.5 entries; 1/2 NPT entries; cable gland; flameproof plug |
| Housing material | 316L SS or aluminium alloy (polyester coated) |
| Weight | 1.61 kg |
| Other ratings / standards | IEC 61000‑6‑3; vibration effect < 0.1 %SPAN (IEC 61298‑3) |
Key Features
- Remote diaphragm seals place the measurement on hot, viscous or corrosive media.
- 100:1 turn-down with 4–20 mA, HART and Modbus RTU and ±0.1 % of reading.
- IP66/67 housing with flange, M44x1.25, G1 or G2 process connections.
- ±0.1% SPAN (TD≤5) accuracy for dependable measurement.
- Fast ≤100 ms response for dynamic measurement.
Typical Applications
- Viscous & Corrosive Media
- CIP/SIP Lines
- Evaporators & Reactors
- Utilities & Marine