Flammable gas detector 921A

The Arbiter Systems®, Inc. Model 921A Combustible Gas Meter is a rugged, portable instrument that measures total combustible gases (TCG) in oil-filled transformer nitrogen gas blankets. TCG measurements have been shown to be good indicators of transformer health. The supplied cylinders of Instrument Air, Zero Grade Nitrogen and 1 % Methane in Nitrogen calibration gases support field calibration, after which TCG measurements are virtually automatic. The Model 921A also has a built-in gas pressure sensor. By connecting the gas sampling hose to the PSI port and pressing PSI, the blanket fill gas pressure can be accurately measured. The Model 921A is provided with a hard-sided transit case, along with instrument air, nitrogen, and 1 % calibration gas cylinders and all necessary regulators and accessories. Gas cylinder recycling suggestion: Typically the cylinders can be vented to the atmosphere, punctured, and then recycled as steel scrap. However, it is best to contact the local recycling facilities so specific laws/rules are not violated. Measures total combustible gases (TCG) in the field. Built-in gas pressure sensor. Includes regulators and accessories. Includes cylinders of Instrument Air, Zero Grade Nitrogen and 1 % Methane in Nitrogen calibration gases. All shipments containing gas cylinders ship from the factory via FedEx Ground ONLY. Reshipping this non-flammable calibration gas through common carrier requires hazardous materials certification because the cylinder pressure is greater than 40 psi.