by calgas | Oct 30, 2020
They are used in gas detection units to detect toxic or explosive gases and measure gas concentration, typically using the air as the reference environment.
by calgas | Oct 30, 2020
Typically a fixed length of tubing, attached to a pumped gas detector, dropped into a manhole, tank and vault that draws a sample from the area about to be entered. Ideally, the hose should be long enough to reach the bottom (some gases are heavier) and the pump...
by calgas | Oct 30, 2020
(Parts per Million) A common measurement for certain gases. The measurement is the mass of a chemical contaminate per unit of volume of water. IE: 50 ppm Carbon Monoxide
by calgas | Oct 30, 2020
(Lower Explosive Limit) The lowest concentration of gas or vapor that will burn in air. LEL varies from gas to gas, but for most, it is less than 5% by volume
by calgas | Oct 30, 2020
Gas monitor, these units are also fixed or portable. (see also Gas Detector)
