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Pressure Transducers
QPress – QLS-MICRO 1200 Series
The QLS-MICRO 1200 Series is an ultra-low-pressure ceramic transmitter for ranges starting at 0.01 bar, including positive, negative and compound spans. The ceramic sensing element gives ±0.5 % FS accuracy and withstands up to ten times overpressure, protecting it against spikes on low-range duty. A compact stainless housing and a 4–20 mA output on an M20x1.5 connection suit chemical, power and environmental measurement where pressures are small but precision matters.
Measurement range
−0.1 to 0.4 bar
Accuracy
±0.5 % FS
Output / communications
4–20 mA
Process connection
Metric threaded options
Process temperature
−30 to 80 °C
Approvals / Protection
CE / UKCA / RoHS, IP65
Technical Specifications
| Pressure type | Gauge; Positive/Negative |
|---|---|
| Process / ambient temperature | −30…80°C (Connector); −20…70°C (PE cable); −20…80°C (PUR cable); −20…60°C (Ex) |
| Power supply | 12–28 V DC |
| Outputs | 4–20 mA (2‑wire) |
| Environmental rating | IP65 |
| Electrical connection | 4‑pin connector; Cable |
| Housing material | SS304 |
| Weight | ≤150 g |
Key Features
- Ceramic sensor measures very low pressures from 0.01 bar with ±0.5 % FS accuracy.
- Withstands up to 10x overpressure, protecting the sensor against spikes and surges.
- Compact stainless housing with a 4–20 mA output on an M20x1.5 connection.
- IP65 ingress protection for demanding environments.
- Operates across −30 to 80 °C.
Typical Applications
- Petrochemical
- Power plants
- Mining
- Urban water supply
- Hydrological exploration