Digital Display Transmitter with Temperature Humidity Sensor Probe RS485 Analog 0-5V 0-10V 4-20mA Waterproof Temperature Sensors
1. Overview
The relative humidity of air is the ratio of the absolute humidity in the air to the absolute humidity at saturation at the same temperature, which is a percentage. (that is, the percentage of the amount of water vapor in the air in a certain time and the amount of saturated water vapor at the temperature) is expressed by RH.
The air temperature and humidity sensor adopts imported digital temperature and humidity sensor, which has been finely calibrated during production. The calibration data is stored in the internal memory. Relative humidity and temperature sensor has digital output, can be completely interrotating characteristics, do not need to go through the complex calibration, calibration process, measurement accuracy, linearity, repeatability, interrotating, consistency and other outstanding, it is suitable for environmental equipment matching, instrument equipment integration, general environmental testing.
2. Characteristics
(1) High cost performance, wide voltage design.
(2) Digital linearization correction, high precision, high stability.
(3) full range temperature compensation, temperature and humidity measurement range is wide, the measurement range is optional.
(4) Flexible installation, easy to use.
(5) Small size, light weight, anti-vibration.
(6) Can be made into a variety of shapes, convenient for different customer needs.
3. Scope of application
Widely used in building automatic control, telecommunication room, paper making, warehousing logistics, shopping malls, hotels, cinemas, railway stations, museums, theaters, agricultural greenhouses, hospitals, meteorology, clean workshop and other areas that need to measure air temperature and humidity.
4. Product parameters
Temperature range: standard -40~80℃, other temperature range can be customized
Humidity range: 0 ~ 100%RH (non-condensation state)
Accuracy: ±0.3℃ (0℃-65℃); ±3%RH (10%-90%)
Repeatability: ±0.1℃; Plus or minus 0.1% RH
Long-term stability: < 0.04℃/ year; < 0.5%RH/ year
Output signal: A: voltage signal (0 ~ 2V, 0 ~ 5V, 0 ~ 10V)
B: 4 ~ 20mA (current ring)
C: RS485 (Standard Modbus-RTU protocol, default device address: 01)
Power supply voltage: 10~30V DC
Response time: < 1S
Working environment: Temperature: -40℃ ~ 120℃; Humidity: ≤95%RH
Load capacity: Voltage output: output resistance ≤250Ω; Current output: ≤600Ω
5. Data conversion method
T: Temperature, unit: ℃;
H: Humidity, unit: %RH;
V: Voltage collected by the collector (unit: V).
A: Current value collected by the collector, unit: mA;
RS485 signal (default address 01) :
Standard Modbus-RTU protocol, baud rate: 4800; Check bit: none; Data bit: 8; Stop bit: 1
6. Precautions
(1) When you receive the product, please check whether the package is in good condition, and check whether the sensor model and specification are consistent with the products you choose.
(2) The installation place should be far away from chemical corrosive environment.
(3) The sensor and wire should be far away from high voltage and heat source.
(4) The sensor is a precision instrument and should be stored in a dry, ventilated indoor environment at room temperature.
(5) The sensor is a precision device. Please do not disassemble it by yourself when using it, so as not to cause product damage.
7. Please contact us if you need product instructions.
