Iot temperature and humidity sensors

User:JXCTUpload time:Aug 02 2022
What is a temperature and humidity sensor?

Temperature and humidity sensors are devices that convert temperature and humidity into electrical signals that can be easily measured. Temperature and humidity sensors on the market generally measure temperature and relative humidity.

Temperature and humidity sensor
Temperature and humidity sensor
How does a temperature and humidity sensor work?

Most of the temperature and humidity sensors adopt the temperature and humidity integrated probe as the temperature measuring element to collect the temperature and humidity signals, which are converted into current signals or voltage signals linearly related to the temperature and humidity through circuit processing. Can also directly through the main control chip 485 or 232 interface output.

How do I calibrate a T/H sensor?

The T/H sensor has been calibrated before delivery and can be used directly after receiving it. The second calibration is of little significance. If calibration is needed, you can find a temperature and humidity with the same measurement range and accurate value. Compare devices. You can adjust the value by manually pressing buttons or modifying communication protocol parameters.

How to choose the best temperature and humidity sensor?

The selection of temperature and humidity sensor is based on the measurement accuracy, which is the most important index of humidity sensor. Each percentage point increase is a step, or even a final level, for the humidity sensor. Because to achieve different precision, the cost of manufacturing varies greatly, the selling price also varies greatly. Therefore, users must choose according to their own needs, should not blindly pursue “high, fine, fine”. If the humidity sensor is used at different temperatures, the display value should also take into account the effect of temperature drift.

It is well known that relative humidity is a function of temperature, which seriously affects the relative humidity of a given space. Temperature change of 0.1°C. A humidity change (error) of 0.5% RH will occur. If it is difficult to maintain constant temperature in the application, it is suggested that the humidity measurement accuracy is too high. In most cases, if there is no accurate method of temperature control, or if the space under test is not sealed, an accuracy of ±5%RH is sufficient.

For the need for accurate control of constant temperature and humidity in local space or need to track and record humidity changes at any time, the accuracy of the humidity sensor is more than ±3%RH. Accuracy is required to be higher than ±2%RH, and even a standard humidity generator can be difficult to calibrate the sensor, let alone the sensor itself.

Relative humidity gauges, even at 20-25 ° C, are difficult to achieve 2%RH accuracy. Typically, the characteristics given in the product information are measured at room temperature (20 ° C ±10 ° C) and under clean gas.

Temperature and humidity detector
Temperature and humidity detector
Temperature and humidity sensor 

The temperature and humidity sensor adopts a high degree of protection enclosure, and the degree of protection is IP65. It can be used in outdoor or high dust occasions. High sensitivity, accurate measurement, no fear of condensation, strong anti-interference, stable performance.Temperature and humidity sensors can be used for temperature and humidity detection in harsh environments such as industrial plants, traffic tunnels, energy, and electricity, as well as temperature and humidity detection in computer rooms and laboratories such as fruit trees, gardens, agricultural pastures, agricultural greenhouses, and flower breeding.

T/H sensor
T/H sensor
It is highly recommended

The two points that the user must consider when purchasing a temperature and humidity sensor are brand and quality. Professional brands can maximize your value for money. Good quality can save the user in the use of the process of worry, avoid the trouble of frequent maintenance and replacement. JXCT is a professional manufacturer of temperature and humidity sensors. For many years has been engaged in the production and development of temperature and humidity sensors. Products in line with the national Institute of Metrology certification and international certification. We have professional technical personnel to provide you with free technical support and a variety of after-sales services. Choose JXCT, choose quality.