ESAB Linde L-32 Flowmeter (Series "A") accurately measures the flow rate of four different gases (argon, helium, carbon dioxide and a 75% argon - 25% carbon dioxide mixture) in cubic feet per hour (cfh) and can be rotated to allow for easy reading from any position. The flow readings are accurate within 5% of the maximum calibrated scale reading for each gas. Be sure the flowmeter is calibrated for your specific application, as the "A" series flowmeters are calibrated to operate with an upstream pressure of 50 psig (+1 psi). If operating at other pressures, a pressure correction factor must be applied to ensure accurate flow readings. The L-32 can connect directly to inert gas or carbon dioxide regulators, or can be installed in a pipeline with an appropriate adapter.