Temperature and Humidity Transmitter with Digital LCD Display

Temperature and humidity transmitter with LCD display can convert the air temp and humidity into 4-20mA standard signal, with dustproof probe and metal filter screen. It is duct and wall mounted, wide measuring range, long-term stability and high accuracy.

SKU: CCHN-TAHT-FG2020

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Delivery date: 6-25 days

Overview

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	CCHN-TAHT-FG2020
Weight	130g
Dimension (LWH)	230.58040.5mm
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	1CCHN-TAHT-FG2020 with 50cm four-core shield wire, 1flange (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.