Need help selecting the right instrumentation?
Our engineers can help with product selection and application guidance — we respond within one working day.
Process Transmitters
QPress – QDP-PROCESS 5600 Series
The QDP-PROCESS 5600 Series is a smart differential-pressure transmitter for demanding process duty across oil, gas and chemical plant. It measures differential pressure for flow, level and filter monitoring, and offers 4–20 mA with HART and Modbus RTU so one model serves analogue loops and digital networks. High ±0.05 % FS accuracy, a fast response and a 1/4-18 NPT process connection make it a dependable choice for closed-loop process control. Choose the 5600 for direct-mounted DP where accuracy matters most; the QDP-PROCESS 5400 adds remote seals and hazardous-area approvals for harder installations.
Measurement range
0–100 bar configurable
Accuracy
±0.05 % FS
Output / communications
4–20 mA, HART and Modbus RTU / RS485
Process connection
NPT threaded options
Process temperature
−50 to 85 °C
Approvals / Protection
ATEX / IECEx, up to IP67
Technical Specifications
| Pressure type | Differential Pressure |
|---|---|
| Response time | ≤100 ms |
| Max. working pressure | Line pressure 420 bar; one‑sided overload 250 bar (200 bar for 100 bar range) |
| Process / ambient temperature | −50…85 °C (without LCD); −40…70 °C (with LCD) |
| Power supply | 18.3–44 V DC; 18.3–30 V DC (IS) |
| Outputs | 4–20 mA (2‑wire) |
| Environmental rating | IP66; IP67 |
| Electrical connection | M20×1.5; 1/2 NPT; Waterproof cable gland (IP67) |
| Housing material | Aluminium alloy (coated) or 316L stainless steel |
| Weight | ≈ 4 kg |
| Other ratings / standards | Vibration effect < 0.1 %; long-term stability ±0.1 %SPAN / 10 years |
Key Features
- Differential-pressure measurement for flow, level and filter monitoring across process plant.
- 4–20 mA with HART and Modbus RTU for analogue loops and digital networks.
- High ±0.05 % FS accuracy with a fast response on a 1/4-18 NPT process connection.
- IP66; IP67 ingress protection for demanding environments.
- Operates across −50 to 85 °C.
Typical Applications
- Orifice & Venturi Flow
- Pressurised Tank Level
- Filter & Pump DP
- Boiler & Marine Control