WSS-25 -- Temperature, Humidity, Illuminance, Pressure (New Version)
1. Introduction
WSS-25 is a 4-in-1 RS485 sensor that monitors temperature, relative humidity, illuminance, and atmospheric pressure simultaneously. The sensor is housed in a radiation shield and uses the standard Modbus RTU protocol.
1.1 Features
- Measures temperature, relative humidity, illuminance, and atmospheric pressure
- RS485 output using the standard Modbus RTU protocol
- UV-resistant radiation shield suitable for outdoor environmental monitoring
1.2 Specifications
- Input Power: 10-30VDC
- Interface: RS485 (Modbus RTU)
- Default Baud Rate (with WSC2-L host): 4800
- Maximum Power Consumption: 0.8 W
- Temperature Sensor:
- Range: -40 to +120 ℃
- Resolution: 0.1 ℃
- Accuracy: +/-0.5 ℃ at 25 ℃
- Long-term Stability: <=0.1 ℃/year
- Response Time: <=25 s (τ63, at an internal airflow speed of 1 m/s)
- Humidity Sensor:
- Range: 0 to 99% RH
- Resolution: 0.1% RH
- Accuracy: +/-3% RH at 60% RH and 25 ℃
- Long-term Stability: <=1% RH/year
- Response Time: <=8 s (τ63, at an internal airflow speed of 1 m/s)
- Pressure Sensor:
- Range: 0 to 120 kPa
- Resolution: 0.1 kPa
- Accuracy: +/-0.15 kPa at 25 ℃ and 101 kPa
- Long-term Stability: -0.1 kPa/year
- Response Time: <=2 s
- Illuminance Sensor:
- Range: 0 to 200,000 lux
- Resolution: 1 lux
- Accuracy: +/-7% at 25 ℃
- Long-term Stability: <=5%/year
- Response Time: <=2 s
1.3 Wiring
The wiring is the same as for the previous WSS-25 version.
1.4 Dimensions
1.5 Installation Notice
- Do not power on the sensor while connecting the cables. Double-check all wiring before applying power.
