Classification and use of combustible gas alarm

Description

According to the mandatory relevant regulations, it is necessary to install combustible gas alarm in the field containing gas leakage in the large industrial production industry. Combustible gas alarm adopts catalytic combustion type gas sensor, service life is about 2-3 years. Combustible gas detector is mainly used to detect the concentration of combustible gas in the air. It belongs to the explosion-proof type of gas detector, which can complete the detection of gas concentration display, sound and light alarm, and can connect the exhaust fan, solenoid valve and other external equipment to ensure safe production. In the process of use, it is affected by the surrounding environment and the influence of the frequency of use. The technical personnel suggest that timing is necessary for the combustible gas alarm and calibration.

In the process of use, it is affected by the surrounding environment and the influence of the frequency of use. The technical personnel suggest that timing is necessary for the combustible gas alarm and calibration.

According to the detection of gas can be divided into:

combustible gas alarm, toxic gas alarm and composite gas alarm, gas alarm using different sensors to detect different gases, composite gas alarm can detect combustible and toxic gases together.

According to the shape of the detector itself can be divided into

Stationary gas alarm and portable gas detector

Portable gas detector for handheld, operators can carry, detection of different address gas concentration, portable gas detector set control device, detector in one, small and sensitive. The main difference with the fixed gas alarm is that the portable gas detector can not be connected to other equipment.

According to the application environment can be divided into:

Industrial gas alarms and household gas alarms.

Fixed gas alarm for industrial use is composed of alarm controller and detector. The controller can be placed in the duty room, and the detector is installed in the monitoring point where the gas is most easily leaked for control.

Household gas alarm mainly check the gas is liquefied gas, city gas, natural gas, whether it is natural gas, liquefied gas, still coal to gas,

The following three aspects should be paid attention to when using the gas detector:

First, the need for regular calibration.

The gas detector is measured by a relatively comparative method: the instrument is calibrated with a zero gas and a standard concentration of gas, and the standard curve is stored in the instrument. When measuring, the electrical signal generated by the gas concentration to be measured is compared with the electrical signal of the standard concentration, so as to calculate the accurate gas concentration value. Therefore, at any time to calibrate the instrument, often to calibrate the instrument is to ensure the accuracy of the instrument measurement work.

Two, pay attention to the detection interference between different sensors.

In general, each gas sensor corresponds to a specific detection gas, but no gas detector is likely to be effective. Therefore, when selecting a gas sensor, we should try our best to understand the detection interference of other gases to the sensor, so as to ensure its accurate detection of specific gases.

Three, pay attention to the life of all kinds of gas sensors.

All kinds of gas sensors have a certain service life, that is, life. Generally speaking, in portable instruments, LEL sensor life is longer, generally can be used for about three years; The life of the photoionization detector is four years or more; Electrochemical specific gas sensor life is relatively short, generally in one to two years; The life of the oxygen sensor is short, about a year.

The life of the electrochemical gas sensor depends on the drying of the electrolyte in it, so if it is not used for a long time, it can be sealed in a lower temperature environment to extend a certain service life. Due to the relatively large size of the fixed instrument, the life of the sensor is longer.

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According to the detection of gas can be divided into:

According to the shape of the detector itself can be divided into

According to the application environment can be divided into:

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