A Chilled Mirror Dew Point Meter Automatic Photoelectric Detection System
A technology of photoelectric detection and dew point meter, which is applied in the field of precision instruments to achieve the effects of improving detection accuracy, preventing the impact of accuracy, and improving detection efficiency
Active Publication Date: 2022-01-18
深圳市一量检测有限公司
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Problems solved by technology
[0005] Aiming at the deficiencies in the use of the existing chilled mirror dew point meter temperature adjustment method proposed in the background technology, the present invention provides an automatic photoelectric detection system for the chilled mirror dew point meter, which has fast convergence debugging results and detection result accuracy Higher advantages, solve the technical problems raised in the above-mentioned background technology
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[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0021] see figure 1 , an automatic photoelectric detection system of a chilled mirror type dew point meter, comprising the following detection steps:
[0022] The upper limit of the set temperature range is room temperature, and the lower limit of the temperature range is the minimum cooling temperature of the instrument;
[0023] Drive the cooling temperature of the refrigeration device to the midpoint temperature of the interval; ...
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The invention relates to the technical field of precision instruments, and discloses an automatic photoelectric detection system for a chilled mirror dew point meter, which includes the following detection steps: setting the upper limit of the temperature interval as room temperature, and the lower limit as the minimum refrigeration temperature of the instrument; driving the refrigeration device to cool the temperature to the interval midpoint temperature, and use the midpoint temperature to iterate the upper or lower limit of the interval temperature; the midpoint temperature iteration converges when the photoelectric detection difference is less than the preset value. The invention automatically adjusts the temperature through the system and cooperates with the electric power difference parameter during photoelectric detection, so that the system can automatically judge the dew point position, avoid the error caused by visual inspection and improve the detection accuracy, so as to compare the change rate of the two photoelectric detection results, and The result is judged by the preset value, which makes the dew point detection accuracy controllable, and the professional requirements for personnel operation and use are greatly reduced.
Description
technical field [0001] The invention relates to the technical field of precision instruments, in particular to an automatic photoelectric detection system of a cold mirror type dew point meter. Background technique [0002] The dew point meter is used to detect the dew point temperature of the gas to characterize the gas humidity. It is an important parameter of industrial control process gas. According to the principle, it can be divided into cold mirror type, complete absorption electrolysis type, Al 2 O 3 Capacitive type, etc. Among them, chilled mirror type, as the most accurate and reliable detection instrument, is widely used in standard transmission. [0003] The principle of the chilled mirror dew point meter is as follows: when the measured moisture passes into the dew point measuring chamber, it passes over the cold mirror surface. When the temperature of the mirror surface is higher than the dew point temperature of the moisture, the mirror surface is in a dry st...
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IPC IPC(8): G01N25/68
CPCG01N25/68
Inventor 甘剑涛李健秦燕
Owner 深圳市一量检测有限公司