The temperature control accuracy of thermostatic water bath can reach ± 0.1 ℃, which has been widely used in the field of biological science. The temperature control system of thermostatic water bath is mainly composed of temperature measurement part, temperature rise and fall part and regulation control part.
Temperature measurement part: usually, the industrial platinum thermistor is built as the temperature measurement element, which converts the measured temperature into resistance signal and transmits it to the LCD screen of the equipment to display the temperature, so as to realize the real-time control of the temperature in the bath.
Temperature rise and fall part: the thermostatic water bath has heating and cooling functions. The refrigeration part uses a compressor, and the heating part uses electric heating. The low temperature of thermostatic water bath can reach - 120 ℃, and the high temperature is usually set at 99 ℃, which can meet the needs of most experiments.
Regulation and control part: when the actual temperature is higher than the set value, the relay will make the compressor work for refrigeration; when the temperature is lower than the set value, the relay will drive the heater to work, so as to achieve high-precision temperature control.
