Temperature is a very important physical quantity in work control. Sensors used for temperature measurement mainly include thermal resistance, thermistor, thermocouple, semiconductor temperature sensor and so on. These sensors have their own....
The constant current source driving circuit is responsible for driving the temperature sensor Pt1000 to convert its sensed temperature-varying resistance signal into a measurable voltage signal. In this system, the constant current source re....
Precision chemistry, biomedicine, fine chemicals, precision instruments and other fields have extremely high requirements for temperature control accuracy, and the core of temperature control is temperature measurement. Measuring temperature....
Pt100 temperature measurement circuit (classic temperature range): The temperature sensor PT100 can work in the range of -200 degrees to 650 degrees. The whole circuit is divided into two parts, one is the sensor preamplifier circuit, the ot....
The WZP type platinum resistance temperature sensor product Pt1000 is a device that detects temperature and temperature related parameters by utilizing the characteristics of the electromagnetic parameters of the components as a function of....
Thermocouple is a kind of commonly used temperature sensor . It uses thermoelectric effect to measure temperature according to thermoelectric electromotive force produced by temperature difference between hot and cold ends. It has the advan....
The self-recovery fuse is a new type of fuse with overcurrent and overheat protection that can be reused multiple times. 1. The structural principle of self-recovery fuse: Self-recovery fuses are PTC thermal elements with positive temperatur....
Abstract: This paper presents the hardware and software design of multi-channel PT100-III signal conversion module. Key words: three-wire system; PT100; MODBUS introduction PT100 is a widely used temperature measuring element. It has unparal....
This paper analyzes the working principle and design basis of the functional circuit such as constant current source signal conditioning analog-to-digital conversion in the temperature measurement system, and gives the circuit parameters. Te....
Summary: This paper introduces a method for accurately measuring the resistance of three-wire thermal resistance by constant voltage partial pressure method. For Pt100 thermal resistance, the detection resolution can reach 0.005W. At the sam....