This document is the user manual for the JWSL-7 series handheld temperature and humidity transmitter released by Beijing Kunlun Coast Sensing Technology Co., Ltd. It introduces the overview, technical parameters, appearance wiring, installation steps, and usage precautions of the product.
The JWSL-7 series is a hand‑held temperature and humidity transmitter designed for HVAC‑grade indoor environment measurement. It can be used handheld or inserted into a measurement point and supports both 4‑20 mA current loop and 0‑5 V voltage output.
This manual covers the device overview, technical specifications, physical dimensions and wiring, installation steps, operating procedures, safety precautions, maintenance, transport and storage guidelines, unpacking inspection, and fault analysis with troubleshooting advice. This manual is written in Chinese.
| Supply voltage | DC 24 V (22 V–26 V) or DC 12 V |
|---|---|
| Humidity range | 0 % RH – 100 % RH |
| Humidity accuracy | ±3 % RH (5 %–95 % RH, 25 °C) |
| Temperature accuracy | ±0.5 °C (0 °C–50 °C) |
| Working environment | -10 °C – 60 °C; 0 % RH – 100 % RH (non‑condensing) |
| Long‑term stability | Humidity < 1 % RH/year; Temperature < 0.1 °C/year |
| Response time | < 15 s (1 m/s wind) |
| Output signal | 4‑20 mA (two‑wire) or 0‑5 V |
| Load resistance | Voltage output 250 Ω; Current output ≤ 500 Ω |
| Product weight | ≈ 70 g |
Hand‑hold or insert the transmitter into the measurement area, connect the cable to the terminals, and then link it to the acquisition device.
It is recommended to calibrate the transmitter at least once a year to maintain measurement accuracy.
Store the transmitter at 10 °C–40 °C with relative humidity of 20 %–80 %.