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Title: Design, Calibration And Operation Of Field Standard Test Measures
Author: Michael J Yeandle
Source: 2004 International School of Hydrocarbon Measurement
Year Published: 2004
Abstract: Open top, metal, volumetric vessels with a top neck and a graduated scale, traceable to a recognized national calibration agency such as the National Institute of Standards and Technology (NIST), are known as test measures. They are used for the purpose of calibrating liquid meter provers. However, NIST by convention refers to hand held calibration vessels (10 gallons), which are drained overhead, as test measures, and to stationary calibration vessels (10 gallons and 1500 gallons), which are drained by a bottom drain valve, as provers. Since both these types of vessels are used in the waterdraw calibration of liquid meter provers (volumetric tank provers and displacement type proves) the American Petroleum Institute (API) has adopted the convention of referring to both types of standard vessels as field standard test measures. This paper in accordance with popular industry usage will refer to field standard test measures as TEST MEASURES. All test measures must be handled, transported and stored with care to prevent jeopardizing the integrity of their calibrations.

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