1、 Purpose:

The temperature and humidity measuring instrument is an instrument developed by the Chinese Academy of Building Sciences for measuring temperature and humidity. Produced by Beijing Sichuanger Building Testing Technology Development Co., Ltd. This instrument can simultaneously measure multiple temperature and humidity levels. Directly display values in numerical form that are consistent with the measured scale. At the same time, there is an expansion port that can expand the measurement channel according to user needs.

This instrument adopts foreign temperature and humidity sensors, with stable and reliable performance. It has been strictly tested for various technical indicators and performance by the China Academy of Building Research, and meets various national standards.

2、 Technical Description:

1. This instrument uses DS18B20 temperature sensor produced by DALLAS company in the United States. The sensor has full digital temperature conversion and output, advanced single bus data communication, twelve bit resolution, accuracy of 0.55 ° C, and a detection temperature range of -55 ° C to+125 ° C.

2. This instrument adopts Swiss Sensirion series temperature and humidity product sensors. The humidity sensor integrates sensing elements and signal processing circuits on a miniature circuit board, outputting fully calibrated digital signals. The sensor adopts patented CMOSens ® The technology and patent agency ensure that the products have extremely high reliability and excellent long-term stability. The sensor includes a capacitive polymer moisture sensing element, a temperature measuring element made of bandgap material, and seamlessly connected to a 14 bit A/D converter and serial interface circuit on the same chip. Therefore, this product has the advantages of excellent quality, rapid response, strong anti-interference ability, and high cost-effectiveness.

3This instrument is controlled by a single-chip microcomputer system and has intelligent operation and display functions. Adopting LCD128 * 64 screen display. Equipped with an expansion channel port. When used alone (without expanding channels), no keyboard operation is required and it is easy to use.

4This instrument adopts CMOS integrated imported circuit chips, low drift and low offset linear amplification, and A/D acquisition. Low noise and stable performance ensure high measurement accuracy of the instrument.

3、 Product List

1. One acquisition device host.

2. Four sets of temperature sensors and connecting wires.

3. Two sets of humidity sensors and connecting wires.

4. One packaging box.