... , low pressure loss, good medium generality, pulse signal output proportional to flow, convenient to connect with computer etc. ... total,percentage ,frequency display;9.4~20mA output,0~5KHZ frequency output,the vortex pulse outputSpecification: Measured medium: All ... -4.5 m/sMeasurement Accuracy: ±0.5% ±1%Output Signal: LUGB series- A Pulse signal (current or voltage ... meter for natural gas1" 2"3"4"5"6"