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1. Principle of temperature and humidity controller -- Introduction

Temperature and humidity sensor is an instrument that can measure and control the temperature and humidity signal at the same time, and realize the liquid crystal digital display, and can also set and display the upper and lower limits of temperature and humidity respectively through the key, so that the instrument can automatically start the fan or heater according to the field situation, and automatically adjust the actual temperature and humidity of the measured environment. The action indication is output through two normally open contacts, which truly makes the instrument intelligent and more adaptable to complex and changeable field conditions, so as to achieve the purpose of effective protection of equipment.

2. Principle of temperature and humidity controller -- Classification

Temperature and humidity controllers are mainly divided into: ordinary series and intelligent series.

Ordinary temperature and humidity controller: imported polymer temperature and humidity sensor, combined with stable analog circuit and switching power supply technology.

Intelligent temperature and humidity controller: display temperature and humidity values by digital tube, heater, sensor fault indication, transmission function, the instrument set measurement, display, control and communication in one, high precision, wide measurement range, is a kind of temperature and humidity measurement control instrument suitable for various industries and fields.

3. Principle of the temperature and humidity controller

The temperature and humidity controller is mainly composed of sensor, controller and heater. Its working principle is as follows: The sensor detects the temperature and humidity information in the box and transmits it to the controller for analysis and processing: When the temperature and humidity in the box reach or exceed the pre-set value, the relay contacts in the controller are closed, the heater is switched on and starts to work, and the box is heated or blown. After a period of time, the temperature or humidity in the box is far away from the set value, the relay contact in the controller is disconnected, and the heating or air blast stops.