Need help selecting the right instrumentation?
Our engineers can help with product selection and application guidance — we respond within one working day.
Pressure Transducers
QPress – QLS-UNIVERSAL 3700 Series
The QLS 3700 Series is a general-purpose stainless-steel pressure transmitter for routine industrial measurement. Built around a 316L wetted section with a 4–20 mA output and a G1/8B thread, it suits compact installations on machinery, water systems and process equipment where space and cost both matter. Ranges reach to 600 bar with ±0.5 % FS accuracy, and CE/RoHS compliance plus an ingress-protected housing make it a dependable everyday choice for OEM and maintenance use. Choose the 3700 where space is tight — its G1/8B thread fits compact machinery; the QLS-UNIVERSAL 2200 and 3200 cover broader ranges and higher accuracy.
Measurement range
−1…600 bar
Accuracy
±0.5 % FS
Output / communications
4–20 mA
Process connection
BSP / NPT / Metric threaded options
Process temperature
−30 to 80 °C
Approvals / Protection
CE / UKCA / RoHS, IP65
Technical Specifications
| Pressure type | Gauge; Absolute; Sealed gauge; Positive/Negative |
|---|---|
| Max. working pressure | ≤ 2 × FS |
| Process / ambient temperature | Operating −30…+80 °C (B1/B4); −20…+70 °C (B2 PE/PVC); −20…+80 °C (B2 PUR); Storage −40…+120 °C; −20…+85 °C (B2) |
| Power supply | 8–30 V DC; 12–30 V DC |
| Outputs | 4–20 mA (2‑wire); 0–10 V; 0–5 V; 1–5 V; 0.5–4.5 V |
| Environmental rating | IP65 |
| Electrical connection | 4‑pin connector; 4‑pin with 1.5 m PVC cable; Cable; M12×1 4‑pin connector |
| Housing material | Stainless steel 316L |
| Weight | ≤ 200 g (A); ≤ 250 g (B) |
| Other ratings / standards | Vibration 10 g, 20–2000 Hz; Shock 100 g, 11 ms |
Key Features
- Compact 316L body on a G1/8B thread fits tight machinery and process installations.
- 4–20 mA output to 600 bar at ±0.5 % FS, CE/RoHS compliant for everyday industrial duty.
- IP65 ingress protection for demanding environments.
- Operates across −30 to 80 °C.
Typical Applications
- Machinery
- Petrochemical
- Hydraulics & Pneumatics
- Energy & Water Treatment