682 Series Piston Meter

Exceptional Accuracy (+/-0.1%) & Exceptional Turndown Ratio (250:1)

DESIGN

The 682 series flow meter is a true positive displacement meter that has a unique inline design consisting of three 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 cylindrical bore, controlling the sequence of events in a smooth mechanical motion. This smooth mechanical motion is then transferred through the calibrator to the register.


PERFORMANCE FEATURES

ACCURACY: perfect solution for low flow measurement applications, where 0.1% accuracy is required at low and high delivery volumes.

SUSTAINED ACCURACY: the unique reciprocating piston design with a positive displacement seal coupled with a self-lapping valve design provides no measurement deterioration, regardless of pressure fluctuations. Minimal measurement drift over a 54 million litre service life test!

LINEAR ACCURACY:

50:1 Turndown - capable of ± 0.050% of maximum nominal flow rate
125:1 Turndown - capable of ± 0.075% of maximum nominal flow rate
250:1 Turndown - capable of ± 0.100% of maximum nominal flow rate

REPEATABILITY: capable of 0.010% over the entire range of flow

REGULATORY: Meets NIST, OIML, CSA, SABS, NMI, ATEX, USA military and other international weights and measures accuracy requirements.

 

OPERATING SPECIFICATIONS
DESIGN TYPE: Reciprocating Three (3) Piston Positive Displacement
FLOW CAPACITY: 0.76 LPM to 189 LPM
VISCOSITY: Up to 250,000 SSU (55,000 CPS)
PRESSURE RATING: 150 PSI (10.5 BAR)
TEMPERATURE RATING: -40°F to 160°F (-40°C to 71°C)
CONNECTIONS: 1 - 1 1/2” NPT Standard, Optional 1” and 2” BSPT, Slip Weld, ANSI flanges are available upon request.


METER TYPES

SP STANDARD PETROLEUM
For metering refined petroleum products such as Gasoline, Fuel Oils, Diesel, Bio-Diesel, Kerosene, Motor Oils, Naptha, Anti-Freeze, Vegetable Oils, etc.
SPA STANDARD PETROLEUM (AVIATION)
For metering refined petroleum products such as Aviation Gasoline, Jet Fuels, Gasoline, Fuel Oils, Diesel, Bio-Diesel, Kerosene, Motor Oils, etc.
SPD STANDARD PETROLEUM (DUCTILE IRON)
For metering alternative fuels such as Natural Gasoline, Ethanol, Methanol, Bio-Diesel, Aviation Gasoline, Fuel Oils, Diesel, Motor Oils, etc.
AF ALL FERROUS
For metering Pesticides, Nitrogen Solutions, Fertilizer, Chlorinated Solvents, Paints, Inks, Alcohols, Adhesives, Motor Oils, Molasses, Corn Syrup, Liquid Sugars, etc.
SS STAINLESS STEEL
For metering the same liquids as the SP, SPA, SPD and AF flow meters, but includes food processing and special handling fluids such as Nitric, Phosphorus and Glacial Acetic Acids, Anti-Icing Fluids, Vinegar, Fruit Juices, etc.

ACCESSORIES
 

Mechanical Registration: Mechanical 5 wheel register V/R 7887 or 6 wheel register V/R 7886 with optional preset, ticket printer, swivel, micro switch and register mounted pulser.

 

Electronic Registration: TCS 3000 electronic register is a fully register is a fully integrated flow computer that will control all delivery operations. The modular design and open software architecture provide you with a tailored system that is expandable for future needs.

  

Pulse Transmission: The DMP pulse transmitters provide accurate signals for remote indiciation, totalizers and data monitoring systems by transferring the mechanical rotation of the flow meter into an electronic pulse.

 

Air/Vapor Elimination: Mechanical and electronic air eliminators are devices designed to extract free or accumulated volumes of air or vapor from a liquid dispensing system to achieve accurate measurement results.

 

 

Control Valves: Mechanical, pneumatic and electronic actuated piston and diaphragm control valves designed to meet the variety of needs in the fluids in the fluid process industry. Such valves include preset flow control valves, air differential control valves, pressure relief and safety valves.