Gas alarm: Recent Episodes

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How to maintain and check the four-in-one gas detector? This is a question worth considering. The four-in-one gas detector is widely used in the toxic gas detector environment, but many units can rarely do it except To regular maintenance inspections. For example, in the coal mining industry, safety personnel's negligence, operator violations, safety regulations, etc., will directly or indirectly cause coal mine safety accidents. Then, how should we maintain and inspect the four-in-one gas detector?I got this after my view on chinagasalarm.com

1. Regularly and on time to detect the fault of the four-in-one gas detector and the accuracy of the monitoring instrument; select a high-performance, new monitoring system to prevent the use of old-fashioned, backward equipment and machines. Avoid hidden dangers of safe production.

2, the sensor is replaced regularly, the life of the general electrochemical components is 2-3 years, need to be replaced regularly, in order to ensure the correctness of monitoring information. Once the gas inspectors are not regularly replaced, they are prone to safety hazards.

1. Selecting monitoring equipment needs to consider some external factors such as the specific use environment, usage, and number of uses. In addition to the four-in-one gas detector itself, it can have a large number of data acquisition, real-time transmission, processing and display functions, but also consider itself. Adaptation to the downhole environment, including factors such as temperature and pressure.

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Now that the function of the gas detector is constantly increasing, more and more attention has been paid to the problem of the operation of the combustible gas detector. Therefore, we need to think specifically from this angle, how to run the problem of the combustible gas detector, let us from seven Think about this from a different angle.

1. The fault of the alarm device alarm knows that many people think that as long as the detector is nearby with oil and gas leakage, the controller should announce the alarm signal, and the alarm device may be faulty. This is a fault. The detection target of the alarm device is flammable gas in the air, and the monitoring scale is 0-100%. However, as long as the flammable gas concentration reaches the set value, the controller announces the alarm signal, and there is no oil and gas to report the alarm.

2, the Combustible gas detector device itself explosion-proof equipment damage, did not cause satisfaction in the application, when there is damage to the explosion-proof seals, loose, explosion-proof pipe breakage and other explosion-proof equipment and no one cares. As we all know, the equipment address of the alarm device is attributed to flammable and explosive places. In particular, the detector directly touches the flammable gas on the site. If the explosion-proof equipment is damaged, it will not be repaired or updated in time. When the oil and gas leaks, it may directly cause fire. It does not have the effect of disaster prevention, but it has become a source of fire.

3, the detector does not have a waterproof cover or waterproof cover damage during the use of the process, sometimes free to remove the waterproof cover or waterproof cover damage is not timely replacement phenomenon. The detector is sometimes used in the open air, such as tanks, open-air valve sets, open-air pumping stations, etc.; there are also equipment located 0.3-0.6m above the ground, such as rain or scouring the ground, the water is very simple to enter the detector, greatly Affect the life of the detector.

1. There is no corresponding monitor distribution map of the controller. During the operation process, there is no detector distribution map on the controller operation cabinet. When there is an alarm, it is impossible to timely and accurately confirm the orientation of the corresponding detector and the orientation of the release source. According to the effective detection interval of the flammable gas detector, the indoor space shall not be greater than 7.5m, and the outdoor shall not be greater than 15m. There are more than one detector in many risk equipment areas, and each detector has its own monitoring area and detection scale. Each detector has a corresponding alarm device on the controller. In order to accurately and timely determine the orientation of the release source, the controller should have a detector distribution map.

2. Randomly change the orientation of the detector. During the process of changing the production equipment, the orientation of the detector is arbitrarily changed to form a decrease in the sensitivity of the detector or a dead angle in the device. The detection point is determined by the relevant aspects of process equipment, equipment, and flammable gas accumulation. In the process of reconstruction and expansion, regardless of the effect of the detector and the scale of detection, the orientation of the detection is arbitrarily changed, and the locality where the detection orientation is repeated or not detected is inevitably formed. Moreover, in the process of disassembly and assembly, the sensitivity of the detector may be degraded due to sensation or the like.

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6, the daily view is not in place, this has a direct relationship with the handling. Check whether the system is running normally, check the explosion-proof interface, the degree of sealing, if the seal is not good, simply lead to the blasting of the surrounding combustible gas, every three months to use specifications The gas is tested to see if the alarm value is correct. If the alarm value exceeds 5%, a de novo calibration is required.

1. The method of daily testing is wrong. There is such a clarification in the Combustible gas detector. It is strictly forbidden to touch the detector with high concentration. The frequent high concentration impact will simply lead to the effectiveness of the sensor.

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The gas calibration of the gas detector is zero calibration. How should we adjust it? This problem is an urgent problem for us. If we need to deal with this problem, we need to send it back to the gas detector manufacturer for professional calibration. Then let's talk about it together with the famous gas detectors manufacturer.

The gas range calibration of the gas detector, if available, is claimed to be sent back to the manufacturer for professional calibration. But this program can also be done by itself. Let us briefly introduce the following: The calibration prompt appears on the LCD screen, which greatly simplifies the calibration process. Technicians can simply start the calibration process with magnetic programming. Once the calibration procedure is initiated, the detector displays a calibration menu that provides both zero calibration and actual calibration.

Selecting the start button of the gas detector will start the active zero function. Once the calibration is complete, it will revert to the calibration menu. Selecting the span will start the active rare condition, and the display screen will ask for the calibration of the detector and the concentration of the gas machine. Once the gas is launched, the detector is actively calibrated at the beginning. When the signal stabilizes, the detector records the start data and prompts the operator to disconnect the source. Once the gas concentration is zero, the detector will actively continue its normal operation. If the detector fails to perform the calibration procedure for any reason, the detector will show an error message. If it is smooth, the procedure takes less than three minutes.