We introduce another professional gas measuring instrument-precession vortex flowmeter, which is quite good and cost effective choice for natural gas measurment.  

Intelligent Precession Vortex flow meter (also cass "swirl flow meter") is the brand-new gas flow meter design & developed by our company with most advanced technology, this flow meter combine the functions of gathering flow,temperature and pressure testing, and could carry out the temperature, pressure and compression factor compensation automatically, which is the ideal instruments for gases measuring in petrol, chemical, power, metallurgy industry etc.