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Pressure Transducers
QPress – QLS-ATEX 3400 Series
The QLS-ATEX 3400 Series is a configurable industrial pressure transducer for power, energy and chemical-process duty. It reads across wide ranges to 1000 bar at ±0.25 % FS and delivers a 4–20 mA output on an M20x1.5 face-seal connection for a clean, leak-tight fit. The robust stainless build gives accurate, repeatable measurement, and a configurable range and output let one model standardise across many pressure points on demanding process plant. Choose the 3400 for precise analogue duty to 1000 bar; the QLS-ATEX 4400 adds RS485 and HART options in an IP68 housing.
Measurement range
−1…1000 bar
Accuracy
±0.25 % FS
Output / communications
4–20 mA
Process connection
BSP / NPT / Metric threaded options
Process temperature
−30 to 80 °C
Approvals / Protection
ATEX, IP65
Technical Specifications
| Pressure type | Gauge; Absolute; Sealed gauge; Compound |
|---|---|
| Process / ambient temperature | −30 to 80 °C (B1/B4); −20 to 70 °C (B2 PE); −20 to 80 °C (B2 PUR); −30 to 60 °C (intrinsically safe B1); −20 to 60 °C (intrinsically safe B2); −20 to 60 °C (flameproof); Storage: −40 to 120 °C (B1); −20 to 85 °C (B2/B4) |
| Power supply | 11–28 V DC; 15–28 V DC; 5 V DC; 3.3 V DC |
| Outputs | 4–20 mA; 1–5 V; 0–5 V; 0–10 V; 0.5–4.5 V; 0.5–2.5 V |
| Environmental rating | IP65 |
| Electrical connection | 4‑pin connector; Cable; M12×1 4‑pin connector |
| Housing material | 304 stainless steel; 316L stainless steel; Titanium |
| Weight | ≤ 270 g |
| Other ratings / standards | Vibration 10 g (55–2000 Hz); Shock 100 g (11 ms) |
Key Features
- Configurable across wide pressure ranges with ±0.25 % FS accuracy for precise industrial control.
- 4–20 mA output on an M20x1.5 face-seal connection for a clean, leak-tight installation.
- Robust stainless construction for power, energy and chemical-process measurement.
- IP65 ingress protection for demanding environments.
- Operates across −30 to 80 °C.
Typical Applications
- Water Resources & Hydrology
- Petrochemical
- Electric Power
- Machinery Manufacturing
- Hydraulic & Pneumatic Control