An integral orifice flow meter is a device used for measuring the fluid flow rate.
An integral orifice flow meter is a device used for measuring the fluid flow rate. It measures the volumetric flow rate and speed of liquid or gas as it flows through a pipe. It is a common instrument in the industrial process control industry. The integral flow orifice assembly consists of an orifice plate inside the tube section in line with the main flow stream. A differential pressure transmitter is directly mounted on the orifice assembly. The main advantage is that it eliminates the installation cost with impulse pipes up to the orifice.
Designed for safe and easy installation, the Fuji Electric integral orifice will measure very low liquid or gas flow rates in small bore pipes.
It may be bolted directly to FCX DP transmitters or any pressure sensors that uses standard 54mm centres.
The body is machined from a single-piece of 316 SS (or other material) to give high pressure integrity.
Its unique design incorporates the “Fuji Electric Slip-Ring” to hold the orifice section in place without the use of additional bolts or screws.
Six different sizes of orifice section can be fitted without using any special tools.
It is impossible for the orifice section to move out of place without removal from the pipeline.
This significantly increases safety over other designs.
The complete assembly is fixed into the pipeline using standard oval flanges for easy maintenance.
If a very high accuracy is required then the unit can be fitted into a metered run and flow calibrated as a complete assembly.
HIGH PRECISION
CALIBRATED MEASUREMENT
INCREASES SAFETY
Fuji Electric will supply the integral orifice assembly for fitting to the differential pressure transmitter, or a complete system fully calibrated and ready for direct installation into the pipeline.
Devices that may be fitted directly to the integral orifice assembly include dp switches, dp indicators and dp transmitters.
3-valve manifolds may be used with these devices to calibrate zero and enable removal while the line is under pressure.
The dp transmitter can be supplied with square root extraction, analogue or digital indicator, HART communication, Exi, ExN or Exd hazardous area certification and/or NACE specification.
For mass flow, gauge pressure transmitters, or absolute pressure transmitters and temperature sensors can be built into a metered run and supplied complete with a mass flow computer.
One instruction manual is supplied with each shipment.
A full set of drawings and certificates can also be supplied.
The standard unit is supplied to the following specification. For different materials, threads and options please refer to the “Details Required” section on the back page, or the detailed engineering drawing.
The transmitter is designed to be compatible with a wide range of liquids and gases, provided they are compatible with the materials of manufacture. This versatility makes it suitable for a multitude of industrial applications.
With a process pressure range from vacuum to 160 BarG, this transmitter offers exceptional flexibility to adapt to a variety of working environments, even under extreme pressure conditions.
The transmitter can operate over a wide temperature range, from -40 to +120°C for the process. The ambient temperature depends on the differential pressure transmitter used, ensuring maximum adaptability.
Components in direct contact with the fluid are made of 316 stainless steel, offering exceptional corrosion resistance. The oval flanges are also made of 316 stainless steel, ensuring long-term durability. As an option, alloys such as 630 SS can be chosen for bolts.
Viton and PTFE seals guarantee reliable sealing, even under varying pressure and temperature conditions, contributing to measurement stability and accuracy.
The transmitter features convenient connections for easy integration into existing systems. Process connection is via oval flanges with 1/2″ NPT threads, offering installation flexibility.
The transmitter offers direct mounting on 54 mm centers, facilitating installation. Transmitter bolt threads are standard M10, with the option of 7/16 UNF to suit various configurations.
Integral orifice flow meter - flow measurement with primary elements
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