... SBL digital target gas flowmeter calibrator1 Intruduction 1) Category and applications Based on the measurement theory of flow meter, ... widely used in many fields of petroleum, chemical industry, energy, foodstuff, environment protection, water conservancy and so on. The flow ... pressure : 0~42Mpa. 2) Characteristics l Measurement flow of liquid, gas, steam, ropy mediums or ambulatory mediums in low, ...