The 682 series piston flow meter is a true positive displacement flow meter that has an inline design consisting of three (3) reciprocating pistons operating within their respective measuring chambers, where each piston works in a manner similar to an automobile engine. The pistons are fitted to a wobble plate, which has a shaft extending from its upper surface and a valve pivot attached beneath it. The valve pivot drives a sliding valve from piston to piston as a known amount of product flows through each cylinder bore, controlling the sequence of events in a smooth mechanical motion.
Features
* Superior Accuracy over the entire flow range
* Low Maintenance
* Long Service Life
* 75 years of proven performance and acceptance
* Wide Viscosity Range - up to 50,000 SSU (11,000 CPS)
* Meets NIST, OIML and many other international weights & measures certifications
* Industry leading 10 YEAR WARRANTY!
Specifications
Design: Reciprocating Three (3) Piston
Size: 1-1/2" Flange Connection
Type: SP, SPA, SPD, AF & SS
Flow Range: 0.2 to 50 GPM (0.76 to 190 LPM)
Linear Accuracy: Capable of +/- 0.1% over flow range
Repeatability: 0.01% over 250:1 turndown
Pressure: 150 PSI (10.5 BAR)
Temperature: - 40 to 160°F (- 40 to 71°C)
Material: Aluminum, Ductile Iron & Stainless Steel
Seals: Viton, Teflon & Simriz
