This part of GB/T 17286 provides general principles for proving systems for meters used in dynamic measurement of liquid hydrocarbons.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 4124 Liquid hydrocarbons - Dynamic measurement - Statistical control of volumetric metering systems
3 Prover
3.1 Types of prover
The following types of proving systems are in use:
a) tank prover systems: made of metal (stainless steel, carbon steel, etc.), of the specified structure, with certain volume, and may be used as a means of standardization of transfer
b) pipe provers: bidirectional and unidirectional. Pipe provers with precision tubes as described in 6.7 are available for special applications.
c) master meters: a meter is used as a means of standardization of transfer. Master meters shall be verified as qualified under the condition close to the actual working condition, and then the working meter shall be verified by volume comparison method. This method may produce additional errors.
3.2 Setting of provers
Provers may be used either connected (fixed or mobile) to the metering station or in a central proving station to which the meters or the measures can be taken to be proved unconnected.
3.3 Minimum pulses
In order to limit the maximum error to ±0.01% when using a pulse generator for proving, at least 10000 pulses shall be obtained from the meter per proving run. This number of pulses may be reduced by pulse-interpolation techniques which allow either the use of meters with fewer pulses per unit volume or reduction of the prover volume.
GB/T 17286.1-2016 The following standards are cited:
GB/T 17286.1-2016 Cited by the following standards: