To find IMS +7 (495) 221-10-50 About company Engineering Information Contacts September 01, 2017 Home page > Engineering > Metrology, Accounting and Calibration Systems > Piston Calibration Rigs Pipe piston calibration equipment Pipe-piston calibration units (TPU) are used for verification and control of metrological characteristics (CMH) of flow meters. The scheme of the metering unit should ensure the conditions for checking and KMH flow meters without disrupting the flow measurement process. Volumetric meters - flow meters are verified directly by TPU. Mass flow meters are also verified by TPU with simultaneous measurement of the density of the controlled product. The pipe-piston calibration unit is determined by the throughput of the metering unit, the type of flow meter used on it, as well as the dimensions set aside for the TPU installation. The most widespread are uni- and bidirectional TPUs. In metering stations where mass flow converters are used as flow meters, compact provers are often used. Due to the limited volume of the calibrated section of the compact prover, the latter is used in conjunction with a comparator to obtain reliable test results. Pipe-piston installation - automation of the verification process, which does not require large costs and ease of maintenance of the prover and the ability to carry out verification without significant violations of the working conditions of the technological process. OGSB, a partner of the IMS, was the first on the territory of the Russian Federation to establish the production of bi-directional piston testing installations (TPU), State Register No. SI No. 44252-10. At the same time, we are official dealers of the Flow Measurement Device Company - the manufacturer of the most modern compact provers that have won worldwide recognition in recent years. Description and principle of operation TPU is a bi-directional installation with a leakage control of a four-way valve, a polyurethane ball piston, with an internal polymer coating of a calibrated section. The calibrated section is made of pipes and bends calibrated by the inner diameter. The calibrated area is limited by detectors that record the passage of the ball piston. Внутренняя поверхность установки тщательно очищается и покрывается тонким слоем специальной синтетической смолы для защиты от коррозии и уменьшения трения при движении поршня. В ходе поверки преобразователя расхода (ПР), шаровой поршень, находящийся внутри пусковой камеры, начинает движение в направлении противоположной камеры приема­пуска. Попадая в разгонный участок ТПУ, поршень полностью перекрывает внутреннее сечение ТПУ и движется вместе с жидкостью с одной и той же скоростью. При прохождении поршня через детектор генерируется сигнал, разрешающий отсчёт импульсов от поверяемого преобразователя расхода. Когда поршень достигает второго детектора, генерируемый им сигнал дает команду на прекращение отсчёта импульсов. По числу импульсов, поступивших с преобразователя расхода и фиксированному объёму калиброванного участка ТПУ определяется коэффициент преобразования ПР. Далее поршень попадает в противоположную камеру ТПУ и остается там до тех пор, пока не изменится положение 4­х ходового крана, вызывающее изменение направления потока жидкости внутри ТПУ на противоположное направление. Шаровой поршень захватывается потоком и процесс измерений повторяется вновь. Verification is carried out by repeated movement of the ball piston inside the TPU and measuring the number of pulses received from the PR for each time interval of the piston movement along the calibrated section of the TPU. Specifications Completed projects Go to the Completed projects section >>> Pipe piston calibration rigs (TPU) Pipe piston calibration rigs (TPU) Pipe piston calibration rigs (TPU) Metrology, Accounting and Calibration Systems - Mobile testing unit based on mass meters - Reference calibration installations based on a measuring tank and a volumetric meter - Installations for verification and calibration of in-line oil moisture meters - Installation of verification and calibration of TPU - Oil consumption metering systems SIKN, SIKNS, commercial oil metering unit - Installations for measuring the amount of crude oil and associated petroleum gas (UISN) - Gas metering units (UUG) - Installation for verification of flow density transducers - Automated group metering units - Setting up multiphase measurements - Pipe piston calibration equipment - Units for measuring oil quality indicators - Measuring Line Blocks Compressor equipment Technological equipment Automated control systems Security systems Import substitution of measuring instruments About companyEngineeringInformationContacts 117312, Moscow, st. Vavilova, house 47a Telephone: +7 (495) 221-10-50 Fax machine: +7 (495) 221-10-51 Write a letter: © IMS 2008–2017. All rights reserved.