Resistance type temperature sensor verification system and method

Abstract

A resistance type temperature sensor verification system comprises a standard resistance type temperature sensor, a thermostat, a thermostat control module, a data collector, a first communication interface module, a verification task management module and a verification result generation module, wherein the data collector comprises collecting channels, a lead of one collecting channel is short-circuited, and a correction channel is formed and used for acquiring lead resistance values, standard device collecting channel resistance values and verified device collecting channel resistance values; the verification task management module is used for correcting the standard device collecting channel resistance values and the verified device collecting channel resistance values acquired when the temperature of the thermostat meets verification conditions of verification points according to the lead resistance values so as to correspondingly generate standard device collecting channel resistance corrected values and verified device collecting channel resistance corrected values of corresponding verification points. The resistance type temperature sensor verification system can eliminate measuring errors caused by resistance values of leads through which the collecting channels are electrically connected with the standard resistance type temperature sensor and the verified resistance type temperature sensor respectively, and the verification precision and accuracy are improved. The invention further discloses a resistance type temperature sensor verification method.

Description

Technical field [0001] The invention relates to the technical field of temperature sensor verification, in particular to a resistance temperature sensor verification system and method. Background technique [0002] Resistance temperature sensor is one of the most widely used temperature sensors in the industrial production process. In addition to process measurement and control in petroleum, chemical, electric power, military, aerospace and other industries, in recent years, various temperature sensors have been increasingly used in medical equipment, analytical instruments, electronic equipment, pharmaceutical equipment, and household appliances. In the electrical and automotive industries. As a temperature measuring instrument with a large quantity and a wide range, it is very important to carry out the correct verification to ensure the accuracy and uniformity of the temperature value. It is very important to control the quality at the source of temperature measurement. [000...

AI Technical Summary

Problems solved by technology

Second, the existing system cannot fully automatically correct the temperature control deviation of the constant temperature equipment, but adopts a manual judgment method. This method may cause large errors or inaccurate results of the test results due to misjudgments by the test personnel, or the temperature control deviation value is not accurate. When the verification requirements of the corresponding verification points are met, it is necessary to perform mandatory verification manually, which will eventually lead to certain errors in the verification results

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