Automatic calibrating device of non-dispersive infrared methane sensor

Abstract

The invention discloses an automatic calibrating device of a non-dispersive infrared methane sensor, and relates to the field of device design in the sensor calibration process. The automatic calibrating device is characterized in that the automatic calibrating device is composed of a PC upper computer, a controller, a gas chamber, standard concentration methane gas, nitrogen, a methane gas alarm,a switch valve, a mass flow controller, a shunt, a flowmeter, a detection chamber, a methane sensor, a data collector, a negative pressure sucking pump and an exhaust gas treatment system. The automatic calibrating device is mainly used for calibrating the non-dispersive infrared methane sensor. According to the automatic calibrating device, under the condition of guaranteeing the safety of working personnel, automatic calibrating work of twelve sensors and sensors of multiple output signals is completed at one time. And the reliability of calibrating results is ensured.

Description

technical field [0001] The invention relates to an automatic verification device of a non-dispersive infrared methane sensor, in particular to an automatic verification technology of a novel non-dispersive infrared sensor. Background technique [0002] The non-dispersive infrared methane sensor is a sensor used to detect the gas concentration in mines. Coal mine safety regulations require that mine safety detection instruments need to be calibrated regularly. At present, every verification work of the non-dispersive infrared methane sensor needs to be carried out manually, resulting in inaccurate verification results. Secondly, when testing the non-dispersive infrared methane sensor, it is impossible to ensure that people are isolated from the testing environment, and there are potential safety hazards. Finally, there are many types of sensors. Due to the different transmission signals, the existing verification system cannot detect multiple signals at the same time. When ...

AI Technical Summary

Problems solved by technology

At present, every verification work of the non-dispersive infrared methane sensor needs to be carried out manually, resulting in inaccurate verification results

Secondly, when testing the non-dispersive infrared methane sensor, it is impossible to ensure that people are isolated from the testing environment, and there are potential safety hazards

Finally, there are many types of sensors. Due to the different transmission signals, the existing verification system cannot detect multiple signals at the same time.

When faced with the verification of a large number of sensors with different models, the existing system can only perform one-to-one verification, which consumes a lot of time and manpower

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