Current location:
Homepage
/
/
/
Advantages and disadvantages of contact and non contact pyrometer

News Center

Check category

Advantages and disadvantages of contact and non contact pyrometer

(Summary description)There are two types of temperature measurement methods: contact and non contact pyrometer. Contact pyrometer: the temperature sensitive element is in contact with the measured object and exchanges by heat transfer and convection. The two require good thermal contact to obtain higher measurement.

Advantages and disadvantages of contact and non contact pyrometer

(Summary description)There are two types of temperature measurement methods: contact and non contact pyrometer. Contact pyrometer: the temperature sensitive element is in contact with the measured object and exchanges by heat transfer and convection. The two require good thermal contact to obtain higher measurement.

Information

There are two types of temperature measurement methods: contact and non contact pyrometer. Contact pyrometer: the temperature sensitive element is in contact with the measured object and exchanges by heat transfer and convection. The two require good thermal contact to obtain higher measurement. Accuracy. With non-contact pyrometer, the temperature sensitive element does not contact with the measured object, but exchanges heat through thermal radiation, or the temperature sensitive element receives part of the thermal radiation energy of the measured object, and the magnitude of the thermal radiation energy deduces the measured object temperature. With this method, the temperature measurement response is fast, and the interference to the measured object is small. It can measure the high temperature, the moving object and the occasions with strong electromagnetic interference and strong corrosion. Disadvantages: low accuracy.

non contact pyrometer

Common contact temperature measurement: thermal resistance, thermocouple, bimetal thermometer. non contact pyrometer: photoelectric pyrometer, radiation pyrometer, colorimetric pyrometer, non contact pyrometer.

Generally speaking, contact thermometers are relatively simple, reliable, and have high measurement accuracy; but because the temperature measurement element and the measured medium need to be fully thermally exchanged, and it takes a certain time to reach thermal equilibrium, there is a delay in temperature measurement. At the same time, it is limited by high temperature resistant materials and cannot be used for high temperature measurement.

For non-contact pyrometer temperature measurement, for example, infrared pyrometer measures temperature through the principle of thermal radiation. The temperature measurement element does not need to be in contact with the measured medium. Infrared pyrometer has a wide temperature measurement range and is not limited by the upper limit of temperature measurement. Infrared pyrometer does not It will destroy the temperature field of the measured object, and the reaction speed is generally relatively fast; however, the measurement error is relatively large due to the influence of external factors such as the object's emissivity, measurement distance, smoke, and moisture.
 

RECOMMEND NEWS

2024
03-26
小黑点

Understanding Fiber Optic Pyrometers in Temperature Measurement Instruments

Learn about the technology behind fiber optic pyrometers and how they are used in temperature measurement instruments within the gas and liquid metrology industry.
查看详情
2024
03-19
小黑点

Exploring Common Challenges and Solutions in Using Fiber Optic Pyrometers for Temperature Measurement

Discover the ins and outs of utilizing fiber optic pyrometers for temperature measurement, including the most common challenges that users face and the solutions to overcome them. Dive deep into the w
查看详情
2024
03-12
小黑点

Understanding Fiber Optic Pyrometers for Temperature Measurement

Discover the ins and outs of fiber optic pyrometers and how they are used in temperature measurement for gas and liquid metering instruments.
查看详情
迪凯光电

400-811-6877

Tel:027-8750 9386   027-8750 9105
Add:Dingye building C block, International Enterprise Center, Optics Valley Avenue, Wuhan China  
Fax:027-87745185   
Mail:dkoe@chinadikai.com