GAS DETECTORS & ANALYSERS

GAS DETECTORS & ANALYSERS DESCRIPTION

16″ Gooseneck sensor, detects all CFC Refrigerants such as R-22, R-124, R-11 and R-12 etc. For installations and safety inspections, VTECH is a reliable source for gas leak detector models and combustible gas detectors. For utilities, pipe fitters, inspectors, property managers, fire safety and others, having a portable gas detector for quick gas leak detection is a must-have. Use VTECH handheld multi-gas detector that functions as a both a methane and propane gas detector.

GAS SENSOR

Gas leak detectors, Gas Analysers as well as gas sensors interact with a gas to initiate the measurement of its concentration which could be used to sound an alarm. The gas detector of gas sensor then provides output to a gas instrument to display the measurements. Common gases measured by gas detectors and gas sensors include ammonia, aerosols, arsine, bromine, carbon dioxide, carbon monoxide, chlorine, chlorine dioxide, Diborane, dust, fluorine, germane, halocarbons or refrigerants, hydrocarbons, hydrogen, hydrogen chloride, hydrogen cyanide, hydrogen fluoride, hydrogen selenide, hydrogen sulfide, mercury vapor, nitrogen dioxide, nitrogen oxides, nitric oxide, organic solvents, oxygen, ozone, phosphine, silane, sulfur dioxide, and water vapor.

Gas detectors, Gas Analyzers and Gas Sensors can output gas measurement of the gases detected in a number of ways. These include percent LEL, percent volume, trace, leakage, consumption, density, and signature or spectra.

The lower explosive limit (LEL) or lower flammable limit (LFL) of a combustible gas is defined as the smallest amount of the gas that will support a self-propagating flame when mixed with air (or oxygen) and ignited. In gas-detection systems, the amount of gas present is specified in terms of % LEL 0% LEL being a combustible gas-free atmosphere and 100% LEL being an atmosphere in which the gas is at its lower flammable limit.

The relationship between % LEL and % by volume differs from gas to gas. Also called volume percent or percent by volume, percent volume is typically only used for mixtures of liquids. Percent by volume is simply the volume of the solute divided by the sum of the volumes of the other components multiplied by 100%. Trace gas sensors given in units of concentration: ppm. Leakage is given as a flow rate like ml/min. Consumption may also be called respiration. Given in units of ml/L/hr.

Density measurements are given in units of density: mg/m^3. A signature or spectra measurement is a spectral signature of the gases present; the output is often a chromatography.