Variable-area flow meter NR Type
for liquidsfor gasin metering tube

variable-area flow meter
variable-area flow meter
variable-area flow meter
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for liquids, for gas
in metering tube
plastic, glass
industrial, for water treatment
Process temperature

Max.: 100 °C (212 °F)

Min.: 0 °C (32 °F)

Volumetric flow rate

400 l/min (105.7 us gal/min)


Operation Principle The variable area flow meter content a float & taper tube. The fluid flow through the taper tube and force up to the float. The flow rate is measured as a function of the area of the opening. This area displayed as the float that is free to move to produce the varying area. Technical Data A. - Measuring The Flow Rate For • - Gases & Liquid • - Chemical process System • - Water treatment System • - Industrial flow System B. - Service Condition • - Viscosity: < 3 cP • - Max. working température: Métal: 100°C; Plastic: 60°C • - Max. working pressure: (1) - Body material: NRS: 15 kg/cm2, NRI: 15 kg/cm2, NRV: 6 kg/cm2 (2) - Glass tube: Borosilicate glass 6 kg/cm2 (3) - P.C tube: 10 kg/cm2, Instant pressure: 15 kg/cm2 C. - Alarm Switch Available (N.O) • Switch rating: AC 125V 0.5A / DC 100V 10W / Max. DC 250V < 40mA D. - Accuracy: ±2.5% F.S


NR Type
NR Type
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