Calibration method for temperature transmitter with sensor
A technology for temperature transmitters and calibration methods, applied in thermometer testing/calibration, thermometers, instruments, etc., can solve the problems that cannot guarantee the measurement uncertainty of the temperature measurement system, etc.
Pending Publication Date: 2021-11-02
XIAN THERMAL POWER RES INST CO LTD
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Problems solved by technology
[0003] General temperature devices and acquisition systems cannot guarantee the measurement uncertainty requirements of the temperature measurement system for reliability performance tests for the calibration of temperature transmitters with sensors
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[0026] The present invention is described in further detail below in conjunction with accompanying drawing:
[0027] refer to figure 1 , the calibration method of the band sensor temperature transmitter of the present invention comprises the following steps:
[0028] 1) Check the appearance of the sensor and the wiring and parameter setting of the temperature transmitter 2;
[0029] Make sure that the appearance of the temperature sensor 1 is not damaged or corroded, the internal wiring of the temperature transmitter 2 is correct, and the type and temperature range of the temperature sensor 1 are set correctly.
[0030] 2) Install the temperature sensor 1 into the furnace, and connect the equipment;
[0031] Put the temperature measuring sensor 1 and the standard device 3 into the constant temperature device 5 at the same time, and connect the standard device 3 and the temperature transmitter 2 with the acquisition system 6 and the reading device 4 .
[0032] 3) Implement c...
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The invention discloses a calibration method for a temperature transmitter with a sensor, and the method comprises the following steps: 1) taking a constant temperature device as a calibration temperature source, and carrying out the measurement at a calibration point through an acquisition system and a reading device, thereby obtaining an output value of the temperature transmitter and a measurement value of a standard device; 2) according to the theoretical output value and the actual measurement value of the temperature transmitter and the actual measurement value and the nominal value of the standard device, calculating a measurement error of each calibrated point of the temperature transmitter with the sensor; and 3) according to the measurement error of each calibrated point of the temperature transmitter with the sensor, calibrating the temperature transmitter with the sensor. According to the method, accurate calibration of the temperature transmitter is realized.
Description
technical field [0001] The invention relates to a calibration method for a transmitter, in particular to a calibration method for a temperature transmitter with a sensor. Background technique [0002] For a large number of generator sets at home and abroad, the acceptance test of new units before they are put into operation, and the reliability performance test of equipment in operation, most of them currently use the test procedure ASME PTC 46 of the American Society of Mechanical Engineers (ASME). Among the acceptable system requirements, the temperature measurement part, the acceptable test temperature measurement system needs to meet the corresponding design and calibration criteria. Generally, the measurement uncertainty requirement of the temperature measurement system recommended by this test specification is 0.5°C. Based on this requirement, the selection of temperature measuring instruments for the temperature measuring system is also particularly important. [00...
Claims
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IPC IPC(8): G01K15/00
CPCG01K15/005
Inventor 赵婷婷周昭亮韦宜由志勋李思瑶李哲毓原晨婧和烨周亚群瞿丽莉王志浩杨海燕张倩
Owner XIAN THERMAL POWER RES INST CO LTD