High-Accuracy Wireless Pressure and Temperature Transmitter
RS PM350-RTU combines pressure and media-temperature acquisition, an OLED display and NB-IoT / 4G transmission in one monitoring terminal. It serves water networks, fire-water systems and distributed monitoring points. An internal battery is provided, with priority given to an external supply when connected. Battery life depends on sampling, transmission intervals, signal strength and external loads.
Applications:
Product Highlights:
Specifications
| Parameter | Specification and conditions |
|---|---|
| Series | RS PM350-RTU wireless pressure and temperature monitoring terminal |
| Nominal full-scale ranges | 1 / 2 / 5 / 10 / 20 / 30 / 40 / 60 / 100 / 160 / 250 / 350 bar |
| Wireless communications | NB-IoT / 4G; MQTT / UDP, depending on ordered version |
| RS485 output | Modbus, pressure data only |
| Acquisition interval, low-power version | 6 seconds–5 minutes; default 5 minutes |
| Transmission interval, low-power version | 10 minutes–24 hours; default 12 hours |
| Sensor response time | Low-power version ≤2 ms; high-rate acquisition version ≤1 ms; not the wireless transmission interval |
| Pressure TEB | ≤±0.50% FS at −20 to 85 °C; datasheet elevation condition 1–100 m |
| Media-temperature measurement | −20 to 85 °C, accuracy ≤±2 °C |
| Ambient operating temperature | −40 to 85 °C |
| Power | Internal battery / external 5.0–7.2 VDC; external supply recommended >5.0 VDC and <7.2 VDC |
| Battery life | Estimate for the actual sampling/transmission settings, signal strength and external loads |
| Ingress protection | Gauge IP67; absolute / sealed gauge IP68, subject to connection and assembly |
| Datasheet version | 2025-02-27, 8 pages |