SenTec

SEM240 DIN rail temperature and humidity sensor

SEM240 DIN rail temperature and humidity sensor with compact size with standard DIN35 rail mounting card for direct rail mounting. Widely used in power distribution cabinet installation, wall mounting, 485 communication interface standard ModBus-RTU communication protocol.

A temperature and humidity sensor is a sensor device equipped with humidity sensitive and thermal elements that can be used to measure temperature and humidity, some with on-site display, and some without on-site display. Temperature and humidity sensors are widely used in various fields of production and life due to their small size and stable performance.

The temperature and humidity sensor mostly uses the temperature and humidity integrated probe as the temperature measuring element, collects the temperature and humidity signals, and processes them through the circuits such as voltage stabilization filtering, operational amplification, nonlinear correction, V/I conversion, constant current and reverse protection. After that, it is converted into a current signal or a voltage signal output that has a linear relationship with temperature and humidity, and can also be output directly through the main control chip such as 485 or 232 interface.

Parameters

Items

Parameter

DC power supply (default)10~30V DC
Maximum power consumption0.3W
Precision Ahumidity±2% RH (5% RH~95% RH, 25°C)
temperature±0.4°C (25°C)
Precision B (default)humidity±3% RH (5% RH~95% RH, 25°C)
temperature±0.5°C (25°C)
Long-term stabilityhumidity≤1%RH/y
temperature≤0.1°C/y
Response timehumidity≤4s (1m/s wind speed)
temperature≤15s (1m/s wind speed)
Transmitter circuit operating temperature and humidity-40°C~+60°C, 0%RH~80%RH
Communication protocolModbus-RTU communication protocol (default address code 1, baud rate 4800, N, 8, 1)
Signal outputRS485 output
Temperature display resolution0.1 ° C
Humidity display resolution0.1% RH
Temperature and humidity refresh time1S
Parameter settingsSet by software

Documents

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