For effective management of any process it is important to measure, actuate, record and monitor. ABB offers a full line of field instruments and devices that can provide the necessary control and return investment.
Multiphase flowmeters (MPFM) are devices used for separate measurement of the flow of oil, water and gas in a multiphase flow. By definition, Multiphase Flow Meters (MPFMs) are also used to measure wet gas flow rates (i.e. multiphase flows where the gas content is very high).
VIS is a compact measuring device that must be directly installed on the pipeline. It is based on a unique and patented isokinetic sampling technology. A small part of the multiphase flow is selected and separated into liquid and gas phases using patented high-performance axial separators. Then the liquid and gas are measured with high accuracy separately as single-phase. The gas phase is measured by a traditional single-phase meter (Venturi). The liquid phase is measured after a certain time of filling a known volume of the main vessel (level using a DP transmitter). Changes in the density of oil / condensate and water are directly taken into account thanks to additional DP measurements. The total flow rate is calculated through the sampling coefficient (i.e., using the ratio between the probe and pipe volumes).
VIS uses proven and exclusive technologies without radioactive elements:
VIS uses only classic measuring sensors
VIS has been specifically designed for the most demanding gas volume fraction (GVF) applications:
Important indicators |
|
Working range |
80-100% gas volume fraction |
Accuracy for fluid flow |
±3% from indicated value |
Accuracy for gas flow |
±3% from indicated value |
Accuracy for water flow |
±5% from indicated value |
Nominal diameter |
DN 50 (2”) - DN 300 (12”), large sizes available upon request |
Design pressure |
100 bar (1450psi) and 230 bar (3300psi) as standard. Special configurations are possible in accordance with process requirements. |
Process temperature |
-40 C (-40F) - 300 C (572F) |
Explosion protection certificate |
ATEX CE Ex II 1 G Ex, US Class l Division1&2, IEC Zones 1&2 Exd. Other certificates upon request |
Output signals |
Analog signal (4-20мА), Modbus (Ethernet or serial signal), other standarts upon request |
Pressure drop |
0.3 - 1 bar |
Обладнання КВП підбирається під кожне технічне завдання індивідуально і, для полегшення підбору, а також для найбільш точного опису технологічних вимог пропонуються до заповнення опитувального листа для кожного виду обладнання.
Control and measurement instruments are selected individually for each technical task and, to facilitate the selection, for the most accurate description of technological requirements, it is proposed to fill out QUESTIONNAIRE(QUESTSHEET) FOR each type of equipment.
QUESTIONNAIRE FOR Multiphase Flow Meter (MPFM) VIS