Platinum Resistance Temperature Sensor

Introduction

Temperature is a physical quantity that characterizes the degree of hot and cold of an object. It can be indirectly measured by certain characteristics of the object that change with temperature (such as resistance, voltage changes, etc.).

Through research, it has been found that the resistance value of metal platinum (Pt) changes with temperature, and has good reproducibility and stability.

Sensors made of this physical property of platinum known as platinum resistance temperature sensor, the commonly used platinum resistance temperature sensor has a zero resistance value of 100Ω and a resistance change rate of 0.3851Ω/℃. Platinum resistance temperature sensor

High temperature, good stability and wide application temperature range, it is the most commonly used temperature detector in the medium and low temperature region (-200 ~ 650 ℃), widely used in industrial temperature measurement.

Scope of application

Platinum resistance temperature sensor is temperature sensors used to measure air, soil and water.

The sensor is composed of a precision platinum thermal resistance element and a protective sleeve treated with a special process, and is led out from the sensitive element by a four-core shielded signal cable for measurement.

Usually, four-wire measurement can be used to reduce measurement errors caused by wire resistance.

Platinum resistance temperature sensors have excellent interchangeability and long-term stability, and are widely used in meteorological and environmental protection departments.

The main advantage

Wide temperature measurement range: Due to the stable characteristics of platinum, there will be no physical or chemical changes due to high and low temperatures.

Platinum resistance temperature sensor is a temperature sensor made by using its resistance as a function of temperature.

Since the characteristic curve of platinum resistance is non-linear, the standard relationship between resistance and temperature is given in the form of a graduated table, and is expressed by a resistance-temperature polynomial function R(t). But in actual measurement, it is more convenient to measure and calculate using the temperature-resistance function T(r). A method for obtaining the temperature-resistance polynomial function T(r) using cubic elementary spline curve fitting is introduced. The actual use shows that the calculation speed of this method is fast and the error generated is small, which can improve the running speed and control precision of the temperature measurement and control system.

The platinum resistance sensor has good long-term stability. Typical experimental data are: 300 hours at 400 °C, and the maximum temperature drift at 0 °C is 0.02 °C.

Certificate

Factory

Package

To better ensure the safety of your goods, professional, environmentally friendly, convenient and efficient packaging services will be provided.

Hot Tags: platinum resistance temperature sensor, China platinum resistance temperature sensor manufacturers, suppliers, factory, camshaft sensor, linear encoder, tank level sensor, displacement sensor, baro sensor, Low Chip Resistor