Q1: What is a gas detector?
A1: A gas detector is an instrument for gas leakage concentration detection, including a portable gas detector, handheld gas detector, fixed gas detector, online gas detector, etc.
Q2: What does a gas detector detect?
A2: Combustible gases: Natural gas (methane), liquefied gas, coal gas (hydrogen), acetylene, pentane, alkynes, acetone, toluene, alcohols, hydrocarbons, light oil, etc.
Toxic gases: Carbon monoxide, hydrogen sulfide, ammonia, chlorine, oxygen, phosphine, sulfur dioxide, hydrogen chloride, chlorine dioxide and other toxic and harmful gases.
Q3: What is ppm of gas detector?
A3: Parts per million or "ppm" is often used as a fractional measure of concentration. For example, a methane (molecular) concentration of 2% means that 2 out of every 100 air molecules are methane. Likewise, a methane concentration of 2 ppm means that 2 out of every 1 million air molecules are methane.
5 Tips for Using a Handheld Gas Detector
- Carefully read the instruction manual corresponding to the gas detector before the operation, and be familiar with the performance and operation methods of the machine.
- Check whether the battery power is sufficient. If the battery power is found to be insufficient, replace the battery in time.
- Check whether the air filter of the air inlet is blocked by debris and whether the blockage needs to be cleaned or replaced.
- Press and hold the start button for three seconds during startup to enter the self-test state, and observe whether the low alarm value and high alarm value of the detector are set accurately (the first-level alarm of the CO detector is 50ppm, the second-level alarm is 100ppm; the oxygen detector one The first-level alarm reports 19.5%, the second-level alarm reports 22%; the first-level alarm of the hydrogen sulfide detector is 10 ppm, and the second-level alarm is 15ppm).
- During the self-inspection during the boot process, you should listen to the grading alarm sound and light alarm and vibration alarm for accuracy.
- Observe whether the initial value is accurate after starting the machine under fresh air conditions (the initial display of the CO detector is 0 ppm; the initial display of the O2 detector is 20.9%; the initial display of the hydrogen sulfide detector is 0 ppm).