... 3.Output:4-20mA current 4.Interface:RS-232 output water flow meter RV-100H handheld ultrasonic flowmeter for various ... for standard, other 3 models for optionalTransducer Cord LengthStandard 2x10 meters, optional 2x 500 metersPower Supply3 AAA Ni-H built-in ... , PVC, FRP and other uniform dense quality pipeLiquid typeswater, sea water, sewage, alcohol, various oils such as uniform, single, stable ...