... and control flow rate 3.manufacturer of flowmeter Portable Hydrogen Gas Flow Meter 1.high quality hydrogen meter2,measure and ... of OEM and user application in medical equipment, air samplers, gas analyzers, pollution monitors, chemical injectors, cabinet purging, etc. Models in ... ModelMeasure RangeScrew threadAccuracyUnit price(USD)ml/min(Liquid)NM3/h(Gas)NT-4T6-600.2-2l/mindirect±4% 19NT-4T40-4001 ...