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Calibration and detection method of thermometer

A calibration detection method and a thermometer technology, applied in the field of measurement, can solve the problems of large detection errors and no consideration, and achieve the effect of improving calibration accuracy

Inactive Publication Date: 2011-03-23
EAST CHINA ELECTRIC POWER TEST & RES INST
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Problems solved by technology

The disadvantage of the thermometer calibration detection method in the prior art is that the selection of the point when calculating the average value does not take into account the differences in the response of the standard thermometer and the thermometer to be calibrated to temperature fluctuations and thermal equilibrium states, and the detection error is relatively large

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  • Calibration and detection method of thermometer
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  • Calibration and detection method of thermometer

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Embodiment Construction

[0018] The following will combine Figure 3 ~ Figure 5 The thermometer calibration detection method of the present invention is further described in detail.

[0019] see image 3 , the thermometer calibration detection method comprises the following steps:

[0020] Step 1. Under constant temperature conditions, record the measured values ​​of the calibrated thermometer and the standard thermometer at the same time, record multiple data, and draw the measurement data graphs of the calibrated thermometer and the standard thermometer according to the recorded data;

[0021] In order to ensure constant temperature conditions, the calibrated thermometer and the standard thermometer are placed in a stable standard temperature bath, and the calibrated thermometer and the standard thermometer are still used to compare and measure the calibrated thermometer and the standard thermometer; the drawing can be synchronized with the record, or the data can be recorded first , post-drawing;...

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Abstract

The invention provides a calibration and detection method of a thermometer. The method comprises the following steps: 1, recording the measured values of the calibrated thermometer and a standard thermometer at the same time under constant temperature, recording data respectively, and drawing the diagrams of the measured data of the calibrated thermometer and the standard thermometer according to the recorded data respectively; 2, selecting a valid data area; 3, calculating the average value by selecting characteristic points in the valid data area; and 4, calculating the temperature coefficient of the calibrated thermometer according to the average value. The calibration and detection method of the thermometer eliminates the measurement error due to the fact that the standard thermometer and the calibrated thermometer have different responses to the fluctuation of the temperature field and the thermal equilibrium state, and improves the calibration accuracy.

Description

technical field [0001] The invention relates to the technical field of measurement, in particular to a thermometer calibration detection method. Background technique [0002] At present, there are mainly comparison methods for calibration and detection of thermometers. The thermometer to be calibrated and the standard thermometer are placed in a stable standard temperature bath, and the thermometer to be calibrated and the standard thermometer are compared and measured by means of round measurement. Here is an example to illustrate that the thermometer to be calibrated is a thermistor thermometer, and the standard thermometer is a first-class standard platinum resistance thermometer. A plurality of data, and then draw a graph according to the data plot, get as follows figure 1 The measured data graph of the thermistor thermometer shown and as shown figure 2 The standard platinum resistance thermometer measurement data graph shown, figure 1 Among them, the abscissa is the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01K15/00
Inventor 袁志文
Owner EAST CHINA ELECTRIC POWER TEST & RES INST
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