... :one week SBL digital target flowmeter1 Intruduction 1) Category and applications Based on the measurement theory of flow meter, Rixin Flow Meter Ltd. Has ... , energy, foodstuff, environment protection, water conservancy and so on.Gas:Gas, air, hydrogen, natural gas and nitrogen gas, liquified petroleum gas, super - the oxadation hydrogen, flue gas, marsk, butane, and ...