Combustible/Flammable Gas Monitors, 0 to 100%LEL

Combustible gas detector is a detector installed in industrial and residential buildings that responds to the concentration of a single or multiple combustible gas. ATO combustible gas detector measuring range from 0 to 100% LEL, daily use most of the combustible gas detector is catalytic type combustible gas detector and semiconductor type combustible gas detector two types. Hotels, guesthouses, family production rooms and other places using gas, natural gas, liquefied gas mainly use semiconductor combustible gas detector, industrial places emitting combustible gas, combustible steam mainly use catalytic catalytic gas detector.
Combustible/Flammable Gas Detector Specification

Model	ATO-YT-1200H-LEL
Sampling Method	Diffusion
Gas	Combustible/Flammable Gas
Range	0 to 100%LEL
Resolution	1%LEL
Accuracy	≤±3%F.S.
Display	LCD dot matrix display
Backlight	Backlight time is settable; the backlight will be auto on when alarming.
Signal Output (Optional)	High speed data transmission by USB, available for data downloading and printing
Alarms	Sound and light
Operation Language	Chinese/English
Gas Unit	Gas unit ppm and mg/m3 are switchable
Battery	3.7V rechargeable lithium Operating time about 13h Typical charge time less than 6 hours
Explosion-proof Grade	Exia ll CT4
Protection Grade	IP65
Operating Temperature	-20℃~50℃
Operating Humidity	0~90%RH (non-condensing)
Dimension	155*78*35mm
Weight	300g

The combustible gas detector is composed of two parts: detection and detection. The principle of the detecting part of the combustible gas detector is that the sensor of the instrument USES the detecting element, fixed resistance and zero potentiometer to form the detecting bridge. Platinum wire was used as catalytic element in the bridge circuit. After electrification, the temperature of platinum wire rose to the working temperature, and the air reached the surface of the element by natural diffusion or other means. When no combustible gas in the air, bridge circuit output is zero, when the air contains flammable gases and spread onto the detecting element, because the flameless combustion catalyst, temperature, detection element, platinum resistance increases, the bridge road out of balance, to have a voltage signal output, the size of the voltage is proportional to the concentration of combustible gas, signal amplifying, modulus conversion, through liquid display shows the concentration of combustible gas.

When the concentration of combustible gas measured exceeds the limit value, the amplified bridge output voltage and the circuit detection set voltage are used to output a group of square wave signals through the voltage comparator and square wave generator, control the sound and light detection circuit, the buzzer generates continuous sound, the led shines, and the detection signal is sent out. It can be seen from the principle of combustible gas detector that electromagnetic interference will affect the detection signal and cause data deviation. If there is a collision, vibration resulting in device circuit will be broken detection failure; If the environment is excessively humid or the equipment is under water, it may also cause a short circuit in the combustible gas detector or the resistance value of the line to change, resulting in detection failure.