Carbon monoxide alarms are often used in system failures, safety precautions, transportation, medical rescue, emergency relief, induction detection and other fields, and social production is inseparable. However, in the installation process should be how to correctly install the carbon monoxide alarm, so that it can play a correct role? I will be specific for you to introduce the installation process and role of carbon monoxide alarms, so that you have a comprehensive and correct understanding of carbon monoxide alarms, so that you can later use the correct to better ensure your safety.
Carbon monoxide alarm is through the carbon monoxide sensor to sense the concentration of carbon monoxide gas in the air into an electrical signal, the size of the electrical signal with the concentration of carbon monoxide related. Carbon monoxide alarms are classified according to the sensor used, generally divided into semiconductor carbon monoxide alarms, electrochemical carbon monoxide alarms, infrared carbon monoxide detector, etc., from the measurement of sensitivity, accuracy, stability, resistance to cross-gas interference, the best performance is the infrared carbon monoxide detector, but it is more expensive and suitable for laboratory use, civilian use is generally semiconductor and electrochemical carbon monoxide alarms.
Semiconductor carbon monoxide alarms use semiconductor carbon monoxide sensor as a sensitive element, the sensitive element is required to be constant temperature at about 200 ℃ can respond quickly, so it is necessary to increase the electric heating wire heating, so to provide a relatively large current, when the temperature, humidity, and even the wind changes are very unfavorable to its accurate measurement, and there are easy to other gases of the cross-over interference, such as alcohol, nitrogen oxides, and other gases. Interference, such as alcohol, nitrogen oxides, hydrogen, alkanes and other gases, easy to false alarms, but it is inexpensive. General service life of up to five years.
Electrochemical carbon monoxide alarms use zero-power electrochemical carbon monoxide sensor as a sensitive element, most of the electrochemical method of fixed-potential electrolysis principle, the use of fixed-potential electrolysis redox electrochemical reaction, detection of the diffusion current can be derived from the concentration of carbon monoxide gas, and has a very good linear range of measurements as well as a high degree of selectivity, cross-gas interference is also very strong. It has good linear measurement range and high selectivity, strong resistance to cross-gas interference, and relatively expensive price. The electrochemical carbon monoxide sensor is a zero-power type, without heating, very suitable for low-power detection circuit with battery power supply, made into a carbon monoxide concentration meter, portable carbon monoxide alarms and so on. Long-term exposure of electrochemical carbon monoxide sensors to oxygen-free gas samples, alcohol, paint and other irritating solvents will affect their sensitivity and life expectancy, or even failure. Electrochemical carbon monoxide sensors are generally used in air for three years, but also five years, and longer up to eight years or more.
Carbon monoxide gas is heavier than air, carbon monoxide detection probe installation height should be from the floor (or floor) 0.3 ~ 0.6m. 2, carbon monoxide detection probe should be installed in the absence of impact, no vibration, no strong electromagnetic field interference in the place, and around the clear space of not less than 0.3m. 3, carbon monoxide detection probe installation and wiring according to the requirements of the manufacturer, and should be consistent with the relevant provisions of the explosion-proof instrumentation installation and wiring.
Looking at this carbon monoxide alarm manual, do you have a new understanding of carbon monoxide alarm? Carbon monoxide alarm on your safety has an important role and impact, the correct installation of carbon monoxide alarms, will be your future and then the correct alarm in a crisis situation has a key role. Therefore, you must look at this carbon monoxide alarm manual, understand the principle of installation and its standards, better use to the production life, for your production life to provide more security, live a better life.
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