Automatic batch calibration device for micro-mano thermocouples

Abstract

The invention discloses an automatic batch calibration device for micro-mano thermocouples. The automatic batch calibration device comprises a temperature standard instrument, a thermostatic water bath, a zero-degree thermostat, a controller and a computer; the temperature standard instrument, the thermostatic water bath and the zero-degree thermostat are connected with the system controller, andthe system controller is connected with the computer. A micro-nano thermocouple bracket of the automatic batch calibration device solves the problem that micro non-packaged thermocouples cannot be fixed in an existing calibration method, and it is easy to expand into multiple thermocouples; compared with a conventional method in which only a single value can be recorded one time through a voltmeter, the multi-channel system design realizes simultaneous measurement of multiple micro-nano thermocouples in one time of calibration; by the high automation design, a user only needs to set relevant parameters in advance, then the remaining work is automatically completed, and compared with a traditional manual calibration method for micro-nano thermocouples, the automatic batch calibration deviceimproves the calibration efficiency and the result reliability.

Description

technical field [0001] The invention belongs to the field of nanotechnology, in particular to an automatic batch calibration device for micro-nano thermocouples. Background technique [0002] The micro-nano thermocouple is a sensor used for single-cell temperature measurement, which belongs to the coaxial thin-film thermocouple, and the scale of the temperature sensitive area is nanoscale. Thermocouples at the macro scale, after using certain metal materials to form metal heterojunctions, their thermoelectric properties show stability, which has nothing to do with the shape. Therefore, macroscale thermocouples with good uniformity do not need to be individually calibrated for each one. However, the metal heterojunction of the micro-nano thermocouple is at the micro-nano scale, and due to some special effects, the thermoelectric properties fluctuate to a certain extent. On the other hand, there are high precision requirements for single-cell temperature measurement, which r...

AI Technical Summary

Problems solved by technology

[0003] Since the commonly used thermocouple sensing part will be packaged to ensure stability, and the sensing part of the micro-nano thermocouple has scale requirements to ensure that the cell temperature can be measured, so it cannot be packaged

At present, there is no corresponding fixed method for calibration, and the calibration method for micro-nano thermocouples in the prior art is mainly through manually setting parameters, recording instrument readings, and fitting the thermoelectric coefficient after measuring multiple temperature points

Since it takes a certain amount of time for each temperature point to stabilize, and the whole process needs to be attended by people, and the thermoelectric coefficient of each micro-nano thermocouple needs to be obtained, there are bound to be problems such as low efficiency and high error rate.

Images