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A Calibration Resource for non-contact Dynamic Temperature Measurement

In this project, we developed a calibration method to verify that non-contact measuring instruments are capable of measuring rapid dynamic temperature changes. In many applications and processes in industry the temperature change rapidly, and increased demands on products and energy efficiency also mean increased demands on fast and accurate measur

The need to be able to calibrate and verify different types of non-contact temperature measurement systems is steadily increasing. In addition to measuring static temperature accurately, there is also an increasing interest in being able to verify that the rapid temperature changes that today's measurement systems can register actually correspond to the real temperature change.

The National Laboratory for Temperature has a number of reference blackbodies that can generate stable temperatures within a large range, from -30 to over 2300 °C. In the project, a piece of equipment was developed which, together with these references, can generate dynamic temperatures that alternate between the desired temperature and room temperature. The system consists of an optical chopper, which is placed between the pyrometer and the black body, and whose rotation speed is controlled by a measuring system. The equipment can automatically sweep through the desired frequency range up to frequencies that correspond to a response time of the pyrometer of 0.5 ms. By saving the measurement data from the pyrometer, it is possible to analyze the information afterwards to see at which chopper frequency the pyrometer can no longer go from room temperature to the temperature of the black body, which gives the response time for the pyrometer.
 

Summary

Project name

Dynamic Temperature Measurement

Status

Completed

RISE role in project

Project mananger

Project start

Duration

2019-09-30

Total budget

550 kSEK

Funders

Vinnova

Project members

Contact person

Sara Ljungblad

TIC-ingenjör

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Contact person

Patrik Broberg

Forskare

+46 10 516 51 45

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