Hydrogen sulfide H2S personal gas monitors as an important monitoring instrument for safe production, its main role is to detect the concentration of hydrogen sulfide gas in the air, when the concentration in the air reaches a certain concentration, hydrogen sulfide gas detector will automatically sound and light alarm, to remind the staff to take appropriate measures in time to avoid major accidents.
Hydrogen sulfide gas detector has a large number of applications in petroleum and petrochemical enterprises, which plays a very important role in preventing poisoning accidents and reducing casualties. In the process of oil and natural gas exploitation, storage and transportation, processing and refining, the construction site, storage and transportation equipment and production plant area often produce or leak hydrogen sulfide gas, poisoning incidents often occur, and the mortality rate is high, in order to ensure the accuracy of hydrogen sulfide gas detector, we must master the use of hydrogen sulfide detector. In the detection of hydrogen sulfide must pay attention to the relevant use matters.
1. Installation and use method of hydrogen sulfide detector
Hydrogen sulfide gas detector should be installed at drilling sites, underground work sites, gathering stations, natural gas purification plants, water treatment stations and refining and chemical plant areas that are easy to release and accumulate hydrogen sulfide gas. The specific installation location of the detector should be determined according to the field equipment and facilities, process equipment, and the diffusion and concentration of hydrogen sulfide gas. Because hydrogen sulfide gas is heavier than air, the hydrogen sulfide detector should be installed below the release source, and the distance from the release source is not more than 2m outdoors, and the distance from the release source is not more than 1m indoors, and the best position is better than 0.5m near the release source, and the installation height should be 0.3-0.6m higher than the ground (or floor surface). Detector is too low, easy to be splashed by rain, causing damage to the detector. If conditions permit, try to choose a detector with concentration display and sound and light alarm, so that the operator does not have to go back to the duty room to check the alarm controller, and can observe whether there is hydrogen sulfide gas at the operation site to better protect personal safety.
2. Precautions when using H2S personal gas monitors
(1). Pay attention to the concentration measurement range of the detection instrument
All kinds of hazardous gas detectors have their fixed measure range. Only when the measurement is completed within its measuring range can the instrument be accurately measured. If the measurement is carried out beyond the measuring range for a long time, it may cause damage to the sensor.
(2). Pay attention to the detection interference between various sensors
In general, each sensor corresponds to a specific detection gas, but no gas detector can be effective. Therefore, when selecting a gas sensor, it is necessary to understand the detection interference of other gases on the sensor as much as possible to ensure its accurate detection of specific gases.
(3). Improve the accuracy of the gas detector
The H2S personal gas monitors needs to be recalibrated after long-term use, and at the same time, the measurement accuracy of the gas detector will be greatly reduced during use due to various improper use methods, and improving the measurement accuracy of the gas detector will be a very careful work, which needs to be adjusted in many aspects, so as to ensure the accuracy of the gas detector!