A High-temperature Measurement Method for Single / Two-color Radiation Thermometers

Abstract

The present invention specifically relates to a method for high-temperature measurement of a single-color / double-color radiation thermometer, which solves the technical problem that when a blackbody radiation source with a window glass is used in an existing radiation thermometer for high-temperature measurement work, the window glass in the blackbody radiation source will cause different degrees of attenuation to the standard optoelectronic pyrometer and the radiation thermometer to be measured, and it is difficult to accurately and reliably obtain measurement data. The high-temperature measurement method of the single-color radiation thermometer includes the following steps: Step A1) Set the temperature of the blackbody radiation source to the set temperature; record the indication error of the standard optoelectronic pyrometer; the attenuation value of the standard optoelectronic pyrometer passing through the quartz glass is the first attenuation temperature; the attenuation value of the radiation thermometer to be measured passing through the quartz window glass is the second attenuation temperature; Step A2) The standard optoelectronic pyrometer measures the temperature of the blackbody radiation source as the measured temperature; the radiation thermometer to be measured measures the blackbody radiation source to obtain the displayed temperature; Step A3) Calculate the inherent error of the high-temperature blackbody radiation source in the 1C mode.

Description

Technical Field

[0001] The present invention specifically relates to a high-temperature measurement method for a single-color / double-color radiation thermometer. Background Art

[0002] With the development of radiation thermometry technology, in order to improve the measurement accuracy, radiation thermometer manufacturers have produced more and more radiation thermometers with different working modes and different types. Some radiation thermometers can be set with different working modes according to different usage environments and perform automatic temperature compensation for the measurement. When calibrating a radiation thermometer, the influence of glass attenuation on the standard device (standard optoelectronic pyrometer) and the radiation thermometer to be measured has been considered in the calculation of the inherent error of the radiation thermometer in the past. However, it is found in actual work that for some high-temperature radiation thermometers, passing through the window glass will not cause attenuation, or the influence of the window glass is negligible. Taking the radiation thermometer of the E series manufactured by FLUKE as an example, this radiation thermometer has two working modes: monochromatic and double-color. In thermometry, according to the relationship between the temperature sensor or thermometer and the temperature field to be measured, thermometry methods can be divided into two categories: contact thermometry and non-contact thermometry. The latter is also called radiation thermometry. The existing radiation thermometry technology is widely used due to the following advantages.

[0003] (1) When measuring with radiation thermometry technology, it does not interfere with the temperature field to be measured and does not affect the temperature field distribution;

[0004] (2) Radiation thermometry technology has no theoretical measurement upper limit;

[0005] (3) The detector in radiation thermometry technology has a short response time and is easy for fast and dynamic measurement.

[0006] In radiation thermometry technology, there are two commonly used high-temperature blackbody radiation sources. One is a closed type, that is, a blackbody radiation source with a window glass; the other is an open type, that is, a blackbody radiation source without a window glass. Both have their own advantages and disadvantages. The blackbody radiation source with a window glass has the following advantages:

[0007] (1) The diameter of the blackbody radiation source with a window glass is larger than that of the open-type blackbody radiation source;

[0008] (2) The blackbody radiation source with a window glass has higher safety performance;

[0009] (3) The cost and frequency of maintenance of the blackbody radiation source with a window glass are lower than those of the open-type blackbody radiation source.

[0010] Both of the above two methods are used to measure the blackbody radiation source commonly used by radiation thermometers for high-temperature work. The blackbody radiation source with window glass is only applicable to calibrating the radiation thermometer under test whose spectral range is within the flat area of the window glass. Moreover, when using the blackbody radiation source with window glass, the window glass in the blackbody radiation source will cause varying degrees of attenuation to the standard optoelectronic pyrometer and the radiation thermometer under test, making it difficult to accurately and reliably obtain measurement data. Summary of the Invention

[0011] The object of the present invention is to solve the technical problem that when using a blackbody radiation source with window glass to measure a radiation thermometer for high-temperature work, the window glass in the blackbody radiation source will cause varying degrees of attenuation to the standard optoelectronic pyrometer and the radiation thermometer under test, making it difficult to accurately and reliably obtain measurement data, and to provide a high-temperature measurement method for single / double-color radiation thermometers.

[0012] To solve the above technical problems, the technical solution adopted by the present invention is as follows:

[0013] A high-temperature measurement method for a monochromatic radiation thermometer is characterized in that it includes the following steps:

[0014] Step A1) Select a blackbody radiation source, and respectively set the radiation thermometer under test and the standard optoelectronic pyrometer on the outgoing light path of the blackbody radiation source, and the distances from the measurement sensitive ends of the radiation thermometer under test and the standard optoelectronic pyrometer to the blackbody radiation source are equal;

[0015] Set the temperature of the blackbody radiation source, denoted as the set temperature; and record the indication error of the standard optoelectronic pyrometer; record the attenuation value of the standard optoelectronic pyrometer passing through the quartz glass as the first attenuation temperature; record the attenuation value of the radiation thermometer under test passing through the quartz window glass as the second attenuation temperature;

[0016] Step A2) Use the standard optoelectronic pyrometer to measure the temperature of the blackbody radiation source, denoted as the measured temperature; at the same time, use the radiation thermometer under test to measure the temperature of the blackbody radiation source in the monochromatic mode to obtain the displayed temperature;

[0017] Step A3) Calculate the inherent error of the high-temperature blackbody radiation source in the monochromatic mode according to Step A1) and Step A2).

[0018] Further, Step A3) is specifically as follows:

[0019] A3.1. Calculate the temperature deviation of the high-temperature blackbody radiation source in the monochromatic mode:

[0020] The temperature deviation of the blackbody radiation source in the monochromatic mode = [(measured temperature - indication error) - set temperature] + first attenuation temperature;

[0021] A3.2. Calculate the actual temperature of the radiation thermometer under test in monochromatic mode:

[0022] The actual temperature of the radiation thermometer under test in monochromatic mode = Display temperature - Blackbody radiation source temperature deviation + Second attenuation temperature;

[0023] A3.3. Calculate the inherent error of the radiation thermometer under test in monochromatic mode:

[0024] The inherent error of the radiation thermometer under test in monochromatic mode = The actual temperature of the radiation thermometer under test - Set temperature.

[0025] Furthermore, in step A1), the blackbody radiation source is determined according to the temperature range of the radiation thermometer under test;

[0026] The set temperature is determined according to the verification requirements of the radiation thermometer under test;

[0027] The indication error is determined according to the indication error of the traceability certificate of the superior unit of the standard optoelectronic pyrometer;

[0028] The first attenuation temperature is obtained through the quartz window glass by the standard optoelectronic pyrometer;

[0029] The second attenuation temperature is obtained through the quartz window glass by the radiation thermometer under test.

[0030] Furthermore, in step A1), the model of the standard optoelectronic pyrometer is IR-RST65H.

[0031] Meanwhile, the present invention also provides a high-temperature measurement method for a two-color radiation thermometer, which is characterized by including the following steps:

[0032] Step B1) Select a blackbody radiation source, and respectively set the radiation thermometer under test and the standard optoelectronic pyrometer on the outgoing light path of the blackbody radiation source, and the distances from the measurement sensitive ends of the radiation thermometer under test and the standard optoelectronic pyrometer to the blackbody radiation source are equal;

[0033] Set the temperature of the blackbody radiation source, denoted as the set temperature; and record the indication error of the standard optoelectronic pyrometer; record the attenuation value of the standard optoelectronic pyrometer passing through the quartz glass, denoted as the attenuation temperature;

[0034] Step B2) Use the standard optoelectronic pyrometer to measure the temperature of the blackbody radiation source, denoted as the measured temperature; meanwhile, use the radiation thermometer under test to measure the temperature of the blackbody radiation source in two-color mode to obtain the display temperature;

[0035] Step B3) Calculate the inherent error of the high-temperature blackbody radiation source in two-color mode according to step B1) and step B2).

[0036] Furthermore, step B3) is specifically:

[0037] B3.1. Calculate the temperature deviation of the high-temperature blackbody radiation source in the two-color mode:

[0038] The temperature deviation of the blackbody radiation source in the two-color mode = [(measured temperature - indication error) - set temperature] + attenuation temperature;

[0039] B3.2. Calculate the actual temperature of the radiation thermometer under test in the two-color mode:

[0040] The actual temperature of the radiation thermometer under test in the two-color mode = displayed temperature - temperature deviation of the blackbody radiation source;

[0041] B3.3. Calculate the inherent error of the radiation thermometer under test in the two-color mode:

[0042] The inherent error of the radiation thermometer under test in the two-color mode = actual temperature of the radiation thermometer under test - set temperature.

[0043] Furthermore, in step B1), the blackbody radiation source is determined according to the temperature range of the radiation thermometer under test;

[0044] The set temperature is determined according to the verification requirements of the radiation thermometer under test;

[0045] The indication error is determined according to the indication error of the traceability certificate of the superior unit of the standard optoelectronic pyrometer;

[0046] The first attenuation temperature is obtained through the quartz window glass of the standard optoelectronic pyrometer;

[0047] The second attenuation temperature is obtained through the quartz window glass of the radiation thermometer under test.

[0048] Furthermore, in step B1), the model of the standard optoelectronic pyrometer is IR-RST65H;

[0049] The radiation thermometer under test is the E-series radiation thermometer manufactured by FLUKE.

[0050] Compared with the prior art, the beneficial effects of the technical solution of the present invention are:

[0051] 1. The high-temperature measurement method of the monochromatic radiation thermometer of the present invention calculates the inherent error of the radiation thermometer in the monochromatic mode, provides a correct measurement method for using the closed-type blackbody radiation for temperature measurement, and solves the problems of how to measure, inaccurate measurement, and incorrect calculation of the closed-type blackbody radiation source; it has great guiding significance for manufacturers using the closed-type blackbody radiation source to measure high-temperature radiation thermometers.

[0052] 2. The high-temperature measurement method of the dual-color radiation thermometer of the present invention. For a radiation thermometer with both monochromatic and dual-color working modes, in the monochromatic mode, the window glass will attenuate both the standard optoelectronic pyrometer and the radiation thermometer to be tested, and the attenuation degrees are different; in the dual-color mode, due to the temperature compensation function of the radiation thermometer itself, the attenuation caused by the window glass to the radiation thermometer can be ignored, and only the attenuation caused by the window glass to the standard optoelectronic pyrometer is considered; this measurement method is accurate and simple.

[0053] 3. The high-temperature measurement method of the single / dual-color radiation thermometer of the present invention further verifies that the closed blackbody radiation source has higher safety performance and better meets the requirements of modern industrial production. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] Figure 1 It is the high-temperature measurement principle diagram of the radiation thermometer of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0055] Example 1

[0056] As Figure 1 shown, the radiation thermometer calibration device uses a standard optoelectronic pyrometer as the standard, uses the optoelectronic pyrometer or temperature control sensor on the blackbody radiation source to control the temperature stability of the blackbody radiation source, and uses the blackbody radiation source or surface source as the heat source for the calibration and verification of radiation thermometers and radiation temperature sensors. When in use, select a blackbody radiation source whose working temperature range meets the requirements of the radiation thermometer to be tested as the heat source, install the radiation thermometer to be tested and the standard optoelectronic pyrometer on the external workbench as required, and make the optical axes of the standard optoelectronic pyrometer and the radiation thermometer to be tested coincide with the axis of the blackbody radiation source; set the temperature of the blackbody radiation source to a certain temperature point to be calibrated, and after the temperature of the blackbody radiation source is stable, take readings of the standard optoelectronic pyrometer and the radiation thermometer to be tested, and calculate the temperature deviation at the calibration point.

[0057] Due to the characteristics of the closed blackbody radiation source with a quartz window glass, first, the quartz window glass of the blackbody radiation source needs to be sent to the first-level optical metrology station for calibration to determine the wavelength range of the radiation thermometer to be tested; secondly, obtain the attenuation temperature values of the objects to be measured (i.e., the standard optoelectronic pyrometer and the radiation thermometer to be tested) with different wavelengths passing through the quartz window glass. Currently, the test data of the quartz window glass on the closed high-temperature blackbody radiation source sent to the superior unit is used to determine that the closed high-temperature blackbody radiation source can only calibrate and verify the objects to be tested below 3 μm. As shown in Table 1 below, finally, obtain the attenuation temperature values of the objects to be measured with wavelengths of 0.65 μm, 0.66 μm, and 1.0 μm passing through the quartz window glass).

[0058] Table 1 Attenuation temperature values (°C) of objects to be measured with different wavelengths passing through the quartz window glass

[0059]

[0060]

[0061] As can be seen from Table 1, the attenuation degrees of the objects under test in different wavelength ranges through the quartz window glass are different.

[0062] In the monochromatic mode, the window glass attenuates the standard optoelectronic pyrometer and the radiation thermometer under test, and the attenuation degrees are different; when the radiation thermometer works in the monochromatic mode, the details are as follows:

[0063] Step A1) Set the temperature of the blackbody radiation source, denoted as the set temperature; and record the indication error of the superior unit traceability certificate of the standard optoelectronic pyrometer, denoted as the indication error; determine the attenuation value of the standard optoelectronic pyrometer through the quartz glass, denoted as the first attenuation temperature; then record the attenuation value of the radiation thermometer under test through the quartz window glass, denoted as the second attenuation temperature; the blackbody radiation source is determined according to the temperature range of the radiation thermometer under test; the set temperature is determined according to the verification requirements of the radiation thermometer under test; the indication error is determined according to the indication error of the superior unit traceability certificate of the standard optoelectronic pyrometer; the first attenuation temperature is obtained through the quartz window glass of the standard optoelectronic pyrometer; the second attenuation temperature is obtained through the quartz window glass of the radiation thermometer under test.

[0064] Step A2) Measure the temperature of the blackbody radiation source with the standard optoelectronic pyrometer, denoted as the measured temperature; at the same time, measure the temperature of the blackbody radiation source with the radiation thermometer under test in the monochromatic mode to obtain the displayed temperature;

[0065] Step A3) Calculate the inherent error of the high-temperature blackbody radiation source in the monochromatic mode according to Step A1) and Step A2);

[0066] A3.1. Calculate the temperature deviation of the high-temperature blackbody radiation source in the monochromatic mode:

[0067] The temperature deviation of the blackbody radiation source in the monochromatic mode = [(measured temperature - indication error) - set temperature] + first attenuation temperature;

[0068] A3.2. Calculate the actual temperature of the radiation thermometer under test in the monochromatic mode:

[0069] The actual temperature of the radiation thermometer under test in the monochromatic mode = displayed temperature - blackbody radiation source temperature deviation + second attenuation temperature;

[0070] A3.3. Calculate the inherent error of the radiation thermometer under test in the monochromatic mode:

[0071] The inherent error of the radiation thermometer under test in the monochromatic mode = actual temperature of the radiation thermometer under test - set temperature.

[0072] Example 1 is illustrated by taking the measurement of the 1500 °C point as an example:

[0073] In this embodiment, the wavelength of the radiation thermometer under test is 1.0 μm, the temperature range is (600 - 1800) °C, the set temperature (i.e., the nominal value) of the blackbody radiation source is 1500 °C, and the display shows 1500.0 °C; the selected standard optoelectronic pyrometer model is IR - RST65H, the factory serial number is IS - 0199C0001, the wavelength is 0.65 μm, and the indication error of the standard optoelectronic pyrometer at 1500 °C is 0.5 °C. The actually measured temperature value of the standard optoelectronic pyrometer, that is, the actually measured temperature is 1483.6 °C; the radiation thermometer under test shows a temperature of 1488 °C in the monochromatic mode. According to Table 1, the standard optoelectronic pyrometer has a wavelength of 0.65 μm, and the corresponding first attenuation temperature at 1500 °C is 9.83 °C. The radiation thermometer under test has a wavelength of 1.0 μm, and the corresponding second attenuation temperature at 1500 °C is 14.08 °C.

[0074] ① Calculate the temperature deviation of the high - temperature blackbody radiation source in the monochromatic mode:

[0075] The temperature deviation of the blackbody radiation source in the monochromatic mode = [(actually measured temperature - indication error) - set temperature] + first attenuation temperature;

[0076] In this embodiment, the temperature deviation of the blackbody radiation source is [(1483.6 - 0.5) - 1500] °C + 9.83 °C = - 7.07 °C;

[0077] ② Calculate the actual temperature of the radiation thermometer under test in the monochromatic mode:

[0078] The actual temperature of the radiation thermometer under test in the monochromatic mode = display temperature - blackbody radiation source temperature deviation + second attenuation temperature, that is

[0079] 1488 °C + 7.07 °C + 14.08 °C = 1509.2 °C.

[0080] ③ Calculate the inherent error of the radiation thermometer under test in the monochromatic mode:

[0081] The inherent error of the radiation thermometer under test in the monochromatic mode = actual temperature of the radiation thermometer under test - set temperature, that is 1509.2 °C - 1500 °C = 9.2 °C.

[0082] Example 2

[0083] After analyzing the calculation method of the inherent error of the radiation thermometer under test in the monochromatic mode, the calculation method of the inherent error of the radiation thermometer under test in the two - color mode will be discussed next. In this embodiment, taking the E - series radiation thermometer manufactured by FLUKE as an example, the correct calculation method of the inherent error of the radiation thermometer under test in the monochromatic and two - color working modes is described in detail.

[0084] In the two-color mode, the window glass will attenuate the standard optoelectronic pyrometer, but will not attenuate the radiation thermometer to be measured. (A large number of experiments have proved that it is not that there is no attenuation, but that the radiation thermometer has carried out temperature compensation.) When the radiation thermometer works in the two-color mode, the specific steps are as follows:

[0085] Step B1) Set the temperature of the blackbody radiation source, denoted as the set temperature; and record the indication error of the superior unit traceability certificate of the standard optoelectronic pyrometer, denoted as the indication error; determine the attenuation value of the standard optoelectronic pyrometer through the quartz glass, denoted as the attenuation temperature;

[0086] Step B2) Measure the temperature of the blackbody radiation source with the standard optoelectronic pyrometer, denoted as the measured temperature; at the same time, measure the temperature of the blackbody radiation source with the radiation thermometer to be measured in the two-color mode to obtain the displayed temperature;

[0087] Step B3) Calculate the inherent error of the high-temperature blackbody radiation source in the two-color mode according to Step B1) and Step B2).

[0088] B3.1. Calculate the temperature deviation of the high-temperature blackbody radiation source in the two-color mode:

[0089] The temperature deviation of the blackbody radiation source in the two-color mode = [(measured temperature - indication error) - set temperature] + attenuation temperature;

[0090] B3.2. Calculate the actual temperature of the radiation thermometer to be measured in the two-color mode:

[0091] The actual temperature of the radiation thermometer to be measured in the two-color mode = displayed temperature - blackbody radiation source temperature deviation;

[0092] B3.3. Calculate the inherent error of the radiation thermometer to be measured in the two-color mode:

[0093] The inherent error of the radiation thermometer to be measured in the two-color mode = actual temperature of the radiation thermometer to be measured - set temperature.

[0094] Calculate the inherent error of the radiation thermometer of model E series manufactured by FLUKE, specifically as follows:

[0095] The set temperature (i.e., the nominal value) of the blackbody radiation source is 1500 °C, the display is 1500.0 °C, and the measured temperature value of the standard optoelectronic pyrometer, that is, the measured temperature is 1483.6 °C; in this embodiment, the model of the selected standard optoelectronic pyrometer is IR-RST65H, the factory serial number is IS-0199C0001, and the wavelength is 0.65 μm. When the standard optoelectronic pyrometer is at 1500 °C, the indication error is 0.5 °C. The wavelength of the radiation thermometer to be measured is 1.0 μm, and the displayed temperature in the two-color mode is 1490 °C.

[0096] When using a blackbody radiation source with a window glass to measure a high-temperature radiation thermometer, the method for calculating the actual temperature measured by the radiation thermometer to be measured is the same as that in the monochromatic mode of this embodiment. The measurement method of the present invention has universality. In actual tests, we selected a FLUKE E series radiation thermometer to be measured and conducted tests at 1500 °C. (A piece of glass with the same material and thickness as the window glass of the blackbody radiation source with a window glass was placed in front of the blackbody radiation source without a window glass. Two working modes of the blackbody radiation source without a window glass and with a window glass were simulated.) Tests found that in the monochromatic working mode, the quartz window glass would cause attenuation to the object to be measured. When the radiation thermometer to be measured is in the two-color working mode, the quartz window glass will cause attenuation to the standard optoelectronic thermometer and will not cause attenuation to the radiation thermometer to be measured. Analyzing the reasons, it is known that the high-temperature radiation thermometer itself has a temperature compensation function. Through internal temperature compensation, the attenuation problem introduced by the window glass can be ignored. Due to the compensation characteristics of the high-temperature radiation thermometer, the calculation method is simpler. The calculation method is as follows:

[0097] ① Calculate the temperature deviation of the high-temperature blackbody radiation source in the two-color mode:

[0098] The temperature deviation of the blackbody radiation source in the two-color mode = [(measured temperature - indication error) - set temperature] + attenuation temperature, that is, the temperature deviation of the blackbody radiation source is:

[0099] [(1483.6 - 0.5) - 1500] °C + 9.83 °C = -7.07 °C;

[0100] ② Calculate the actual temperature of the radiation thermometer to be measured in the two-color mode:

[0101] The actual temperature of the radiation thermometer to be measured in the two-color mode = display temperature - temperature deviation of the blackbody radiation source, that is:

[0102] 1488 °C + 7.07 °C = 1495.1 °C;

[0103] ③ Calculate the inherent error of the radiation thermometer to be measured in the two-color mode:

[0104] The inherent error of the radiation thermometer to be measured in the two-color mode = actual temperature of the radiation thermometer to be measured - set temperature, that is:

[0105] 1495.1 °C - 1500 °C = -4.9 °C.

[0106] Through the demonstration of the above problem discovery, cause analysis and solutions, the difficult problem of the traceability of the measured value of high-temperature radiation thermometers has been effectively solved, ensuring the accuracy and reliability of the quantity transfer, and solving the previous problems of how to measure, inaccurate measurement and incorrect calculation. It has great guiding significance for any institution that uses a closed-type blackbody radiation source to measure high-temperature radiation thermometers. It should be noted that when calculating the inherent error traditionally, the influence of glass attenuation on the standard optoelectronic thermometer and the measured radiation thermometer is considered. However, in actual use, taking the radiation thermometer of the E series manufactured by FLUKE as an example, this radiation thermometer has a built-in temperature compensation function, and the influence of the window glass in the two-color mode is negligible (can be ignored). Therefore, the original method of calculating the inherent error is not applicable to the existing high-temperature radiation thermometers of this model on the market. The discovery and solution of this problem have not been proposed by anyone nationwide so far and are still the first. It has milestone significance for calculating the inherent error of this model of radiation thermometer using a blackbody radiation source with a window glass.

Claims

1. A high-temperature measurement method for a monochromatic radiation thermometer, characterized in that, the method comprises the following steps: Step A1) Select a blackbody radiation source, and respectively set a radiation thermometer to be measured and a standard optoelectronic pyrometer on the outgoing light path of the blackbody radiation source, and the distances from the measurement sensitive ends of the radiation thermometer to be measured and the standard optoelectronic pyrometer to the blackbody radiation source are equal; Set the temperature of the blackbody radiation source, denoted as the set temperature; and record the indication error of the standard optoelectronic pyrometer; denote the attenuation value of the standard optoelectronic pyrometer passing through the quartz glass as the first attenuation temperature; denote the attenuation value of the radiation thermometer to be measured passing through the quartz window glass as the second attenuation temperature; Step A2) Use the standard optoelectronic pyrometer to measure the temperature of the blackbody radiation source, denoted as the measured temperature; meanwhile, use the radiation thermometer to be measured to measure the temperature of the blackbody radiation source in the monochromatic mode to obtain the displayed temperature; Step A3) Calculate the inherent error of the high-temperature blackbody radiation source in the monochromatic mode according to Step A1) and Step A2): A3.

1. Calculate the temperature deviation of the high-temperature blackbody radiation source in the monochromatic mode: The temperature deviation of the blackbody radiation source in the monochromatic mode = [(measured temperature - indication error) - set temperature] + the first attenuation temperature; A3.

2. Calculate the actual temperature of the radiation thermometer to be measured in the monochromatic mode: The actual temperature of the radiation thermometer to be measured in the monochromatic mode = displayed temperature - blackbody radiation source temperature deviation + the second attenuation temperature; A3.

3. Calculate the inherent error of the radiation thermometer to be measured in the monochromatic mode: The inherent error of the radiation thermometer to be measured in the monochromatic mode = actual temperature of the radiation thermometer to be measured - set temperature.

2. A high-temperature measurement method for a monochromatic radiation thermometer according to claim 1, characterized in that: In Step A1), the blackbody radiation source is determined according to the temperature range of the radiation thermometer to be measured; The set temperature is determined according to the verification requirements of the radiation thermometer to be measured; The indication error is determined according to the indication error of the traceability certificate of the superior unit of the standard optoelectronic pyrometer; The first attenuation temperature is obtained according to the standard optoelectronic pyrometer passing through the quartz window glass; The second attenuation temperature is obtained according to the radiation thermometer to be measured passing through the quartz window glass.

3. A high-temperature measurement method for a monochromatic radiation thermometer according to claim 2, characterized in that: In Step A1), the model of the standard optoelectronic pyrometer is IR-RST65H.

4. A high-temperature measurement method for a two-color radiation thermometer, characterized in that, the method comprises the following steps: Step B1) Select a blackbody radiation source, and respectively set a radiation thermometer to be measured and a standard optoelectronic pyrometer on the outgoing light path of the blackbody radiation source, and the distances from the measurement sensitive ends of the radiation thermometer to be measured and the standard optoelectronic pyrometer to the blackbody radiation source are equal; Set the temperature of the blackbody radiation source, denoted as the set temperature; and record the indication error of the standard optoelectronic pyrometer; denote the attenuation value of the standard optoelectronic pyrometer passing through the quartz glass as the attenuation temperature; Step B2) Use the standard optoelectronic pyrometer to measure the temperature of the blackbody radiation source, denoted as the measured temperature; meanwhile, use the radiation thermometer to be measured to measure the temperature of the blackbody radiation source in the two-color mode to obtain the displayed temperature; Step B3) Calculate the inherent error of the high-temperature blackbody radiation source in the two-color mode according to Step B1) and Step B2), specifically as follows: B3.

1. Calculate the temperature deviation of the high-temperature blackbody radiation source in the two-color mode: The temperature deviation of the blackbody radiation source in the two-color mode = [(measured temperature - indication error) - set temperature] + attenuation temperature; B3.

2. Calculate the actual temperature of the radiation thermometer under test in the two-color mode: The actual temperature of the radiation thermometer under test in the two-color mode = displayed temperature - temperature deviation of the blackbody radiation source; B3.

3. Calculate the inherent error of the radiation thermometer under test in the two-color mode: The inherent error of the radiation thermometer under test in the two-color mode = actual temperature of the radiation thermometer under test - set temperature.

5. A high-temperature measurement method for a two-color radiation thermometer according to claim 4, characterized in that: In Step B1), the blackbody radiation source is determined according to the temperature range of the radiation thermometer under test; The set temperature is determined according to the verification requirements of the radiation thermometer under test; The indication error is determined according to the indication error of the traceability certificate of the superior unit of the standard optoelectronic pyrometer.

6. A high-temperature measurement method for a two-color radiation thermometer according to claim 5, characterized in that: In Step B1), the model of the standard optoelectronic pyrometer is IR-RST65H; The radiation thermometer under test is an E-series radiation thermometer manufactured by FLUKE.

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