Flow Meters

Flow Meters

Flow Meters – TCS 682 Series Piston Type

The TCS 682 reciprocating piston flow meter combines outstanding accuracy (0.1% of flow rate) with one of the widest turndown ratios in the industry (250:1). The TCS 682 reciprocating piston flow meter has a rugged industrial design that is tolerant to changing viscosities, temperatures and liquids with suspensions and solids

The TCS 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 vale 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. This smooth mechanical motion is then transferred throught the drive shaft to the register.

These meters are ideal for vehicles, industrial batching or any other low volume measuring application.


Design and Ratings

  • Superior Accuracy over the entire flow range
  • Low Mainteance
  • Long Service Life
  • Proven performance and acceptance since 1933
  • Wide Viscosity Range – up to 50,000 SSU (11,000 CPS)
  • Model approval by Legal Meterology, Weights & Measures Dept., Govt. of India.
  • Worldwide Weights & Measure Approvals including NIST, OIML, NMI, SABS, ATEX-MID and PED Certified
  • For Marine applications and shipping industry – American Bureau of Shipping (ABS) approval.
  • Reciprocating Three (3) Piston
  • Available Types: SP, SPA, SPD, AF & SS
  • Flow Range: 0.76 to 190 LPM (0.2 to 50 GPM) 250:1 turndown ratio
  • Linear Accuracy: Capable of +/- 0.1% over flow range
  • Repeatability: 0.01%
  • Avaialable Materials of Meter Construction: Aluminum, Ductile Iron & Stainless Steel
  • Available Seals: Viton ®, Teflon ® & Simriz ®
Meter Model No. Flange Size NPT+* Flow Range Working Pressure Working Temperature
gpm lpm psi bar °F °C
682-15 1½” 0.2 to 50 0.76 to 190 150 10.5 -40 to 160 -40 to 71