What are the sampling methods of the gas detector?
1. Diffusion
The so-called diffusion type refers to the online continuous detection and free diffusion detection method;
Regarding diffusion sampling, the detection is mainly carried out through the natural flow of gas. When the gas enters the gas chamber of the detector, the instrument automatically senses and feeds back the monitoring value in real time, so as to achieve the purpose of detection.
2. Pump suction type
The external air pump can be equipped with a flow-through adapter for air in and out or a built-in air pump to realize the pump-suction detection method (air pump is optional);
That is to say, the pump-suction sampling means that the detector adds an aspirating pump, and the suction of the air pump quickly sucks the gas into the gas chamber part of the gas sensor to realize the detection. (The vacuum pump adopts imported vacuum pump, which provides stable and lasting suction airflow, and the vacuum pump has a long service life, low noise, and 5-speed adjustable speed.)
3. Rod type
Rod-type sampling uses pump suction and is equipped with a 1M-long freely retractable metal rod for sampling, which has the detection effect of "going up to the ground". Like the portable pump-suction gas sampling of Shen Guoan, the vacuum pump of the portable gas detector of probe sampling also has the function of self-protection.
