Hebei OSU Electronics Air temperature and humidity, carbon dioxide three-parameter sensor Temperature and humidity sensor

The air temperature,humidity and carbon dioxide sensors adopt imported digital temperature and humidity sensors andNon-dispersive infrared (NDIR) principle carbon dioxideThe sensor has been carefully calibrated during production,and the calibration data is stored in the internal memory. The sensor has digital output and is fully interconvertible,and does not require complex verification.、Calibration process,excellent measurement accuracy,linearity,repeatability,interconvertibility,consistency,etc.,designed with a temperature compensation circuit,can be used under different ambient temperatures,and is suitable for various fields that require the measurement of temperature,humidity and carbon dioxide concentration.。

（1）Using imported temperature and humidity and non-dispersive infrared (NDIR) Principle carbon dioxide sensor,accurate and reliable。

（2）High cost performance,wide voltage design。

（3）Full range temperature and humidity compensation,wide measuring range,optional measuring range。

（4）Flexible installation and easy to use。

（5）Small size,light weight,anti-vibration。

It is widely used in weather stations,greenhouses,environmental monitoring stations,medicine and health,purification workshops,precision laboratories,fermentation tanks,breeding workshops and other fields that need to monitor air temperature,humidity and carbon dioxide concentration.。

Measured parameter: air temperature，Air humidity，Three parameters of carbon dioxide concentration

Units of measurement:℃，%RH，ppm

Measuring range: air temperature:－30℃～70℃

Air humidity:0～99.99%RH

Carbon dioxide concentration:0～2000，5000，10000ppm(Other ranges optional)

Resolution:0.1℃，0.1%RH，1ppm

measurement accuracy:±0.2℃，±3%RH，±20ppm

Operating temperature:-20℃～70℃

output signal:RS485(standardModbus-RTUprotocol,Device default address:01）

Operating Voltage:5～24V DC

Working current:，，

Stabilization time: after power on3min

Response time:<1Second

Cable specifications:2rice4Wire system (RS485) (cable length optional)

Air temperature,humidity and carbon dioxide sensors can be connected to various data collectors with differential input,data acquisition cards,remote data acquisition modules and other equipment，Wiring instructions are as shown below：

Note: Be careful when wiring. If the power supply voltage is too high or the polarity is reversed,it will cause the sensor to malfunction.foreversexual damage。

RS485signal,standardModbus-RTUprotocol

Baud rate:9600;Check bit: none;Data bit:8;Stop bit:1

7.1address

For example: the address to1The sensor address is changed to2,host→Slave machine

If the sensor receives correctly,the data will be returned along the original path.。

Remark:If you forget the sensorOriginalAddress,you can use the broadcast address0XFEreplace,use0XFEThe master can only connect one slave,and the return address is still the original address,which can be used as an address query method.

7.2Query data

Query the sensor (address is1) data (air temperature,humidity,carbon dioxide),host→Slave machine

If the sensor receives correctly,the following data will be returned,and the slave→Host

（1）When receiving the product,please check whether the packaging is intact and check whether the sensor model and specifications match the product you purchased.。

（2）The installation location should be away from chemically corrosive environments。

（3）Sensors and wires should be kept away from high-voltage electricity,heat sources,etc.。

（4）The sensor is a precision instrument and should be stored in a dry,ventilated and room-temperature indoor environment.。

（5）The sensor is a precision device. Users should not disassemble it by themselves when using it to avoid product damage.。

The warranty period of this product is one year. Within twelve months from the date of shipment,our company will be responsible for free repair or replacement of any failure caused by sensor quality problems (non-human damage). After the warranty period,only the cost will be charged.