Temperature and humidity sensor 4-20ma output

4-20mA is a common current signal standard used in industrial automation and process control. In this standard, 4mA represents the minimum value measured by the sensor, while 20mA represents the maximum value measured. For example, if the output of a temperature sensor is 4-20mA, then when the temperature is 0°C, it will output 4mA of current; And when the temperature is 100°C, it will output 20mA of current.

The output of temperature and humidity sensor 4-20mA has a wide range of applications in various fields, and its role is very important. The following are some application scenarios of temperature and humidity sensors:

In the field of industrial automation, such sensors are often used to monitor and control temperature and humidity in the environment. For example, in chemical plants, petroleum refining, water treatment and other application scenarios, temperature and humidity sensors can provide accurate liquid level information.

In animal husbandry, temperature and humidity sensors can be used to monitor the temperature and humidity of places such as greenhouses, livestock and poultry houses to ensure a suitable growing environment.

Smart agriculture: In the agricultural and animal husbandry industrial park, according to the configuration of wireless network sensors and other Internet of things equipment, real-time monitoring of gas temperature, air relative humidity, light, soil layer temperature, soil water content, soil pH and other major parameters. With the video surveillance system software, the real-time monitoring and display of information content such as climate problems, soil layer conditions, crop growth and development, fertilizer and water application, and machine and equipment operation in the vegetable greenhouse are completed.

Greenhouse: Collect and analyze data information according to sensors and controllers, transmit it to the cloud host, and carry out automatic alerts on abnormal phenomena, so that farmers can immediately adopt prevention and control measures to reduce cost risks. In addition, farmers can remotely control the automatic control of the greenhouse of electric rolling gate machine, smoke exhaust fan, water inlet valve and other mechanical equipment, complete automatic watering, natural ventilation, temperature reduction, temperature improvement and other functions, to carry out accurate work, reduce the capital investment of labor costs.

Industrial automation: Temperature and humidity sensors can be used in the field of industrial automation to monitor and control temperature changes in the production process, so as to ensure production quality and efficiency.

Early warning and safety: Temperature and humidity sensors Sensors can be used to monitor changes in high and low temperatures, and alert when the temperature exceeds the safe range, thus ensuring safety in production and life.

Energy saving and emission reduction: The temperature and humidity sensor can monitor the ambient temperature and humidity, so as to adjust the operating status of air conditioners, heating equipment, etc., to achieve energy saving and emission reduction.

In addition to industrial and agricultural fields, temperature and humidity sensors also play an important role in archives management and cultural heritage conservation. In places such as archives and libraries, temperature and humidity sensors can monitor the temperature and humidity of the environment to prevent paper mold or damage. In general, temperature sensors have a wide range of applications in various fields, and their role is very important.