Description
Temperature and humidity transmitter with LCD display converts the air temperature and humidity into 4-20mA standard signal, and mounts in duct or on the wall.
Application: Temperature and humidity transmitter is widely used in meteorology, tobacco, chemicals, medical and health, food industry and other occasions that need air temperature and humidity measurement and control.
Specification
| Model | ATO-TAHT-FG2020 |
| Weight | 130g |
| Dimension (L*W*H) | 230.5*80*40.5mm |
| Output signal | 4-20mA, 0-5V, 0-10V, RS485, RS232 (Optional) |
| Supply voltage | DC 12-24V |
| Measuring range of relative humidity | 0~100%RH |
| Measuring range of temperature | -20~80℃ |
| Accuracy of humidity | ±3%RH (20% ~ 80%) |
| Accuracy of temperature | ±0.5℃ (-10℃ ~ 60℃) |
| Resolution | 0.1℃/0.1%RH |
| Long-term stability | ＜2%RH/year, ＜0.2℃/year |
| Power consumption | ＜50mA |
| Response time | 8s |
| Power-on time | 3s |
| Housing material | PC |
| Working environment | Temperature: -20~80℃, humidity: 0~99.9% no condensation |
| Storage environment | Temperature: -40~80℃, humidity: ＜90%RH |
| Connection type | 4-way free terminal spacing: 5.08mm |
| Product packing list | 1*ATO-TAHT-FG2020 with 50cm four-core shield wire, 1*flange (duct mounted), 3*mounting screw |
| Wiring | Red: V+, black: GND, yellow: RH (humidity output 4-20mA), white: T (temperature output 4-20mA) |
Dimensional drawing (unit: mm):
Built-in switch setting for measuring range of temperature:
| Switch 1 | Switch 2 | Switch 3 | Measuring range of temperature |
| OFF | OFF | OFF | -20~+80℃ |
| OFF | OFF | ON | 0~+50℃ |
| OFF | ON | OFF | 0~+100℃ |
| OFF | ON | ON | -30~+130℃ |
| ON | OFF | OFF | 0~+80℃ |
| ON | OFF | ON | 0~+120℃ |
| ON | ON | OFF | -40~+60℃ |
| ON | ON | ON | Settable |
Tips: Why should temperature and humidity sensor/transmitter be calibrated regularly?
- The temperature and humidity sensor cannot be sealed and protected.
- The measuring part is always in contact with dust and chemicals in the measuring medium.
- The electrical part of the temp and humidity sensor will change due to the passage of time, temperature change and mechanical vibration.
- The above factors will cause the temperature and humidity sensor to drift.
The purpose of calibration:
- Determine the error of the indication value, and determine whether it is within the expected allowable error range.
- Get the report value of the deviation of the nominal value, which can adjust the temperature and humidity sensor or correct the indicated value.
- Ensure that the value given by the temperature and humidity sensor is accurate to achieve traceability.
- Calibration is the execution of a predefined process to determine the relationship between known input values and output values, which is carried out under specified conditions.
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