Precautions for methane sensor installation
It is widely distributed in nature. Methane is the simplest organic matter. It is the main component of natural gas, biogas, waste gas, etc. It is commonly known as gas. It is also the hydrocarbon with the smallest carbon content (the largest hydrogen content) and the main component of natural gas, biogas, oil field gas and coal mine tunnel gas. It can be used as a fuel and raw material for the production of hydrogen, carbon black, carbon monoxide, acetylene, hydrocyanic acid and formaldehyde. Methane is a flammable and explosive gas, an important industrial raw material and daily life fuel gas. It can monitor the production and production of methane in real time. Leakage and volume fraction are extremely important for industrial and agricultural production and daily life. The methane sensor is an instrument used to detect the concentration of methane gas. When methane gas leaks in the environment and the gas sensor detects that the gas concentration reaches the critical point set by the explosion or poisoning alarm, the alarm will send out an alarm signal to remind the work to take safety measures, and drive the exhaust, cut off, and spray system , To prevent explosion, fire, and poisoning accidents. The methane sensor adopts the explosion-proof ExdIMb sensor, which has high strength, good hand feeling, and is waterproof, dustproof and explosion-proof. It has the characteristics of strong safety, fast response speed, and strong anti-interference ability. After a unique compensation algorithm and multi-stage standard gas calibration, it also has the characteristics of long life, high precision, high repeatability and high stability. It is suitable for underground pipe corridors, underground parking lots, public toilets, garages, workshops, chemical plants, greenhouse farms and other occasions where real-time monitoring of methane concentration is required. The equipment adopts wide-voltage 10-30V DC power supply, the standard Modbus-RTU communication protocol, address can be set, the baud rate can be changed, and the communication distance is up to 2000 meters. Multiple types, multiple outputsMethane gas detection and alarm system functions:(1) Real-time monitoring of the methane gas and toxic gas content in the vicinity of the underground pipe gallery of the control room, Real-time alarm when reaching a certain concentration. (2) Real-time watch on-site situation through the host computer system monitoring center. (3) The above monitoring data is recorded in the monitoring center in real time, and the data is unified and centralized management. (4) It can also send out alarm information through various methods such as sound and light alarm, SMS alarm, LED screen display, etc., to inform the person in charge of maintenance and management in time. (5) Automatic classification and sorting of historical data. (6) The management software provides event query, alarm configuration and query, and environment parameter browsing. The correct installation method of the methane sensor: Within a radius of 1.5 meters from the gas source, in a well-ventilated place: (1) Natural gas, city gas, carbon monoxide, smoke ratio The air is light. If detecting natural gas, city gas, carbon monoxide, smog, etc., it is recommended to install it at a distance of about 0.3 meters from the ceiling. ( 2) Liquefied gas is heavier than air and is installed at a distance of about 0.3 meters from the ground. If liquefied gas, carbon monoxide, and smoke are detected, because carbon monoxide is a highly toxic gas, and a small amount will cause people to poison and even die Therefore, it is recommended to install it at a distance of 1.4 to 1.7 meters from the ground. Installation is prohibited in these places: In the cabinet and other places where the air is not easy to circulate; the places that are easy to be directly smoked by oil fume, etc.; Cause the smoke alarm to falsely report. It is best not to install within these hours: 1. The house has not been painted and decorated; 2. The house has been renovated and fully ventilated for less than 5 days: 3. Build wooden furniture in the house, or buy new wooden furniture, which has been fully ventilated for less than 3 days4, used or sprayed insecticides (mosquitoes, cockroaches, etc.), air cleaners, glue, hair spray, glue, etc., Full ventilation is less than 4 hours. It is forbidden to install the alarm. If it has been installed, please cut off the power for the sensor after the wind time, and use a plastic bag to protect the alarm. After enough ventilation time, the sensor can be turned on. So as not to damage the sensor and cause false alarms (alarm if there is no gas leakage).
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