Material Compatibility; Flow Rate; Accuracy - Total Control Systems 700-20 Engineering Manual

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The 700-meter's accuracy (percent of error over or under the zero – error level) remains within
design parameters (+/- 0.15%) over its minimum rated flow range to its maximum rated flow
range for custody transfer meter requirements. This percentage meets or exceeds the Wholesale
and Vehicle accuracy requirements for accurate custody transfer of product, as specified in the
National Institute of Standards and Technology (NIST) Handbook 44.
PRODUCT CHARACTERISTICS
A) Material Compatibility
The product intended to be measured must review Total Control Systems CHEMICAL
COMPATIBILITY on page 23 to 35 to find the suitable materials and meter type. Materials
incompatible with product will potentially reduce accuracy, operation life, contaminate liquid
and may be harmful to others.
B). Flow Rate
The minimum and maximum system rate of flow must be determined for the selection of
flow meter. The flow rate of the system is dependent upon the product viscosity; the desired
meter configuration, the systems pump capabilities, and the plumbing configuration.
C) Pressure
The maximum working pressure allowed should be reviewed under flow meter type and
pressure rating. All meters meet the European Pressure Equipment Directive (PED) No.
97/23/EC. Failure to adhere to the maximum allowable pressure may potentially cause a seal
leak or casting rupture.
TYPICAL ACCURACY CURVE
10 20 30 40 50
PERCENT OF FLOW RATE
Gasoline
Fuel Oil
60 70 80 90 100
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