Meters - Positive Displacement

MIL-HDBK-1022A

3.6.1

Bulk Air Eliminators. Use flange-connected, steel

bodied bulk air eliminator of the desired pressure and flow

rating for the applicable service requirement. Include an

automatic air release head and interlock the equipment with a

float or solenoid-operated hydraulically operated diaphragm

control valve. Provide discharge piping to the product

recovery system or other safe means of containment.

3.6.2

Meters - Positive Displacement. Require flange-

connected, cast steel bodied positive displacement meters of

the desired pressure and flow rating for the applicable

service requirements. Ensure meter has temperature-

compensation (if custody transfer), adjustable calibration,

register and pre-set capabilities. Ensure meter accessories

are compatible with either the mechanical or electronic

support equipment selected. Provide an accuracy of plus or

minus 0.5 percent when used for custody transfer. Consult the

appropriate Service Headquarters for requirements for the

meter to communicate to a remote location or equipment.

Consider the use of a card-operated or key-operated data

acquisition system. Refer to "Card and Key Locks" under

"Controls" paragraph of this section.

3.6.3

Meters - Turbine. Use flange-connected, steel

bodied turbine meters of the desired pressure and flow rating

for the applicable service requirement. Ensure meter has

temperature-compensation and adjustable calibration. Provide

an accuracy of plus or minus 0.5 percent when used for custody

transfer. Ensure all supporting equipment for meter is

compatible with the turbine meter selected. Consult the

appropriate Service Headquarters for requirements for the

meter to communicate to a remote location or equipment.

Consider the use of a card-operated or key-operated data

acquisition system. Refer to "Card and Key Locks" under

"Controls" paragraph of this section.

3.6.4

Meters - Orifice. Use this type of meter only where

custody transfer or accounting/inventory control is not

required. Provide with flange connections.

3.6.5

Pressure or Pressure/Vacuum Gauges. Use liquid-

filled gauges of range and dial size, as necessary, but not

less than 0 to 160 psig (0 to 1100 kPa) pressure range and

4-inch (100 mm) diameter dial. Gauges to be of all stainless

steel construction, with black graduations on a white face.

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