scope:

This chapter details all the essential elements of field standard test measures by providing descriptions, construction details, calibration procedures, operation, inspection, and field use requirements. Accuracy and uncertainty requirements are also discussed. The normal volume range for test measures is 1 to 1,000 gallons, approximately 4 to 4,000 liters. The information contained in this chapter is limited to atmospheric, graduated neck type, metal, volumetric field-standard test measures. The volume is determined between an upper neck scale zero, and either a solid bottom or a tapered bottom with a drain line and shut-off valve, depending on the size of the test measure. Bottom-neck scale test measures and prover tanks are not addressed in this document.

Test measures are classified as:

a. "To deliver" volumetric test measures.

b. "To contain" volumetric test measures.

Guidelines are provided in this document for the design, manufacture, calibration, and use of new and/or replacement test measures and are not intended to make any existing test measures obsolete.