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-SMARTLINK 3800 Series
Built for plant that reads pressure digitally, the QLS-SMARTLINK 3800 Series delivers 4–20 mA with HART or RS485 Modbus RTU straight from the transmitter. Software zero and span let technicians re-range a fitted unit without swapping hardware, and the digital link returns diagnostics to the control system for condition monitoring. An oil-filled stainless sensor spans 0-0.35 to 0–100 bar, so one smart model standardises pressure points across a networked process line.
Measurement range
0–0.35 bar to 0–100 bar
Accuracy
±0.5 % FS
Output / communications
4–20 mA, HART and Modbus RTU / RS485
Process connection
BSP / NPT / Metric threaded options
Process temperature
−30 to +105 °C
Approvals / Protection
CE / UKCA / RoHS, IP65
Technical Specifications
| Pressure type | Gauge; Absolute; Sealed gauge |
|---|---|
| Repeatability | ±0.1 % FS |
| Response time | ≤ 4 ms |
| Max. working pressure | IP65 |
| Process / ambient temperature | Overpressure 150–300 % FS; Burst 300–500 % FS (range‑dependent) |
| Power supply | 12–30 V DC |
| Outputs | 4–20 mA + HART; RS485 (MODBUS) |
| Electrical connection | Stainless‑steel body with DIN 43650 head |
| Other ratings / standards | 0 |
Key Features
- Choose 4–20 mA + HART or RS485 Modbus RTU for direct integration into networked control systems.
- Software zero/span and a wide thread range let one model standardise across many process points.
- ±0.5% FS accuracy for dependable measurement.
- Fast ≤ 4 ms response for dynamic measurement.
- Operates across 80 to 4 °C.
Typical Applications
- Process control in petrochemical plants
- Leak detection and monitoring
- Laboratory and R&D measurement
- Project integration / kitting
- General precision fluid pressure measurement