The Latest Development of International Gas Flowmeter Measurement Technology

The world's only rotary piston calibrator has the WATCHBOG capability of the calibration station. Use it to achieve a more direct connection (traceability) from the main reference standard flow meter to the main reference, see IRPP below. This traceability chain is guaranteed and certified by NMI and installed in Canada's WINNIPEG.

The total uncertainty of the TCC flow calibration station installed in Canada WINNIPEG will reach 0.15% by the end of 2000. (Currently recognized as 0.2%). The IRPP calibrator uses the latest Instromet's latest monitoring sequence software (ISS SupervisorySuite Software) to obtain all measurement results. The software provides a fast, accurate and user-friendly user interface. Rapid sampling of all signals, including flow (only 3 seconds), makes full use of all flow information and optimizes the continuation (continuity) of the measurement. This is the basis for obtaining an objective uncertainty result. In order to ensure the consistency of the measurement results, the system has been optimized. It can perform fast error detection.

The first industrial large rotary piston calibrator (IRPP)

After extensive research and countless experiments, Instromet's unique rotary piston (waist) calibrator is now installed at the TCC flow calibration station in Canada. The calibrator is based on a series of pulseless gas turbine flowmeters that provide highly accurate flow measurements over a wide range of pressures and flow rates. It has only the accuracy and repeatability that can be achieved in the laboratory, enabling it to considerably reduce the total uncertainty of a flow calibration device.
The main features of industrial rotary piston calibrator (IRPP);

(1) Extremely high accuracy; (2) Excellent repeatability; (3) Irrespective of the installation of the calibration station; (4) Independent of the temperature, pressure, and composition of the gas; (5) Extremely wide range ratio (6) Scalability is good; (Scalable) IRPP system can be installed at the gas trading delivery metering station or flow test device, where IRPP can be used as a backup transfer standard, so that other flow meters can be used as routine examples. Line verification. Its measurement core component (cartridge core) is portable, making it easy to transport the core component to a traceable master reference (a higher-level verification laboratory).

Dedicated software systems can output fast-responding traffic signals and reduce unnecessary data, making IRPP a standard flowmeter for realistic calibration ceremonies.

The latest generation of ultrasonic flowmeters - "Sports Cars"

The latest generation of gas ultrasonic flow meters has emerged. The superior flowmeter's ultrasonic probe (sensor) is in a vertical orientation with respect to the meter body, unlike conventional sensors that are inserted at an oblique angle. Designed for 4” (100mm) to 8” (200mm) pipelines, the new QSonic—3 gas ultrasonic flowmeter structure is very compact, and it is used for the measurement of gas delivery. The configuration of the vocal tract is still based on a proven and patented dual reflection principle, combined with a single reflection channel through the middle of the tube. The Q series ultrasonic flowmeters currently being produced are also based on the principle of combining dual reflection channels with single reflection channels.

The sensor is mounted on the top half of the measuring tube. This is done on the one hand to facilitate maintenance and on the other hand to prevent the accumulation of liquid at the sensor slots (concave and cavity). Therefore, this new generation of ultrasonic flowmeters can be better suited for wet gas applications.

In the structural design of the new generation of ultrasonic flowmeters, another feature is that online replacement of sensors with pressure is still a user-determined option. There are extraction tools developed specifically for this purpose. With this extraction tool, the sensor can be replaced within a few minutes without having to reduce the pressure in the pipeline.

For the new generation of ultrasonic flowmeters, the ultrasonic frequency has been increased to 200KHZ, resulting in improved signal to noise ratio. This makes the new generation of ultrasonic flowmeters less sensitive to the noise generated by the regulators or regulating valves.

The Latest Product of Gas Waist Flowmeter Technology As an alternative to the cassette assembly structure commonly used in Waist Wheel Flowmeters, Instromet engineers have developed an extremely compact IMR Model 3 with excellent metering characteristics. Gas waist flowmeter. It can minimize the amount of gas leakage through the measurement chamber while maximizing the volume (volume) of the gas delivered by the waist wheel.

The IRM----3 watch body is very strong and it is impossible to deform the watch body due to misalignment during installation. However, when a general conventional gas turbine flowmeter is installed, the casing is often deformed due to different axes of the pipeline axis and the axis of the flowmeter, and a failure in which the waist wheel is stuck and stopped occurs. IRM --- 3 will not have such a stuck failure.

In line with Instromet's tradition of expanding its precision measurement frontier, Instromet has developed the patented IRMDUO gas waist wheel flowmeter. It eliminates the main pulsation inherent in a normal waistwheel flowmeter (essentially the pulsation of gas flow). By meticulously mounting the coupled pairs of lumbar wheels in a watch body, the pulsations generated by each pair of lumbar wheels are arranged exactly opposite to each other, resulting in a smooth (pulsation-free) flow of air flow. This DUO principle has now been successfully used in the IRM-1 Series Large Diameter Gas Waist Wheel Flowmeter, and for the 4 inch (100mm) to 6 inch (150mm) bore IRM-3 gas waist wheel flowmeter. When all these new lumbar wheel meters are working, they have unparalleled silence and smoothness.

IRM --- 3 series gas waist flowmeter available in diameter: 1.5 inches (40mm) - 6 inches (150mm), and its corresponding flow measurement range is; 0.6 --- 100m3 / h (1.5-- -38M, ie G25-G650), working pressure of gas up to 1.6MPa. The accuracy of such a flowmeter is better than 1%, repeatability is better than 0.1%, and the turndown ratio is greater than 1:100. Gas operating temperature range: -300 °C --- 600 °C. The IRM-3 Series Waist Wheel Flowmeter has been approved by several major international authoritative metrology agencies for use in trade transport metering.

The internationally respected border metering system has achieved a 100% redundancy total energy system with 99.99% utilization due to Instromet's ISS monitoring sequence software package. ISS's advanced color graphic display has historical trends, alarms and extensive maintenance functions. This makes the system running very easy. Advanced calculations include a complete flow library for the quantity and quality measurements of the process and support for redundancy. The metering system can be fully automated through the ISS system or central computer. Various reports can be completely restructured according to specifications. There is available Intranet support software. Instromet has been providing complete turnkey projects for high-level border gas metering systems. The completed projects are:

(1) Transitgas, Switzerland, WaIIbach station: 1990680m3/h under 6.75 MPa, 4×24" Q.Shic and SM---RI-X turbines, with analyzer chamber, redundant programmable controller PLC. Redundancy The ISS system.

(2) Turkey Bo IocIar station; under 7.5 MPa, 120 x 104 m3/n, 4 x 24" orifice plate, with analyzer chamber, redundant PLC, redundant ISS system.

(3) Masera, Italy; at 6MPa, 230 x 104m3/h, 6 x 20" Q.Sonic and SM-RI-X turbines, with analyzer chambers, redundant PLCs, and redundant ISS systems.

(4) Austrian OMV.Arno Idstein and Baumgarten station; 1990 680 m3/h (under 6.75 MPa), 4 x 24" Q.Soh-ic and SM-RI-X turbines, with analyzer chamber, redundant PLC, redundant ISS system.

The natural gas distribution metering system can provide a variety of facilities and the operation is easy to automate for smaller metering points. Instromet provides a cost-effective solution. The industrial-strength ISS supervision (control) system used in border measurement can provide functions such as calculation, complicated pipeline switching, energy calculation and completion of reports. The mimic display of color images makes the operation very easy. If any problem occurs, an alarm must be issued to ensure that the operator obtains relevant information. The recording of measurement results in the system, archives and changing trends make troubleshooting work extremely simple.

The feature is that the connection with the central system designed by Instromet and the support through the modem are all standard. Some examples that have been provided to the user regarding the system are as follows;

(1) Korea, Korea gas; 11 stations, 3 or 4 parallel metering pipes; 47×6", 8", 10", 12", and 16" SM-RI---X turbine meters for Station controlled PLC, ISS software for monitoring and management, automatic switching of metering tubes and automatic reporting.

(2) Kiadan station in Sarajevogas area, Bosnia; 2x16", 1x18" SM-RI-X turbine flowmeter, EncaI2000 chromatograph, used for supervisory management, pipeline switching and reporting ISS.

(3) Geigor station in Petronas, Malaysia; 6.9MPa, 213750m3/h, 3×8" SM-RI-X turbine flowmeter, EncaI2000 chromatograph; used for station control PLC, which can realize automatic switching of metering pipeline. For supervision and reporting of the ISS.

(4) Netherlands, NAM, Tjuchem North Station and South Station; 7.5 MPa, 500 x 144 m3/h and 1000 x 104 m3/h, 4 and 8 x 24" Q.Sonic flow meters, PLC and ISS monitoring computers.

(5) 22 metering and decompression stations in Depa region, Greece; 5×104—50×104 m3/h flow rate, SM-RI-X turbine flowmeter, pressure regulator. EncaI2000 chromatograph, PLC for telemetry and monitoring.