Low flow orifice meters
November 2002
Flow Measurement & Control
It is not always practical to use conventional full-line orifice plates to measure very low flow rates. Pro-Flow offers a solution, namely an 'integral orifice assembly', which consists of an orifice plate that is mounted in a cast orifice plate holder. The plate is sealed by means of PTFE jam seals and the whole assembly is connected to the pressure ports of a differential pressure transmitter, either directly or via a manifold, which has three or five valves - depending upon process requirements. The signal port spacing is standard to fit onto most differential pressure transmitters.
These integral orifice assemblies, which Pro-Flow manufactures locally, are available in many popular metals, including 316(L) stainless steel, 304(L) stainless steel and Hastelloy C. The plates can be made to any standard size as recommended by many manufacturers, or they can be bored to yield a given differential at a particular flow rate.
These integral orifice assemblies are usually supplied with the requisite upstream and downstream piping welded to the orifice plate holders, and the piping can be fitted with welded flanges or with the ends prepared for butt-welding. It is possible to supply the assembly without piping if this is desired. The assemblies are available in 1/2", 3/4", 1" and 11/2"sizes and they are suitable for measuring liquid, gas and steam flow rates.
For more information contact Jack Gitelson, Pro-Flow, 011 452 4877, www.proflow.co.za
Further reading:
How utilities identify water losses in Northern Europe
Flow Measurement & Control
Norwegian leak detection specialist, Ovarro outlines how municipalities are responding to hidden water loss using acoustic monitoring and analysis tools that provide early indications of developing leaks.
Read more...
Senix sensors provide flood warnings
Instrotech
Flow Measurement & Control
To create the world’s most sophisticated flood monitoring and forecasting system, the US State of Iowa’s Flood Centre (IFC) uses more than 200 Senix ToughSonic 30 and ToughSonic 50 ultrasonic sensors to measure water levels in streams across the state.
Read more...
Mastering inline LNG flow monitoring
Flow Measurement & Control
[Sponsored] As global demand for cleaner, more flexible energy sources continues to rise, liquefied natural gas (LNG) stands at the forefront of the energy transition. Engineered for excellence in cryogenic environments, the Anton Paar L-Cor 8000 flowmeter redefines inline LNG flow monitoring.
Read more...
Magnetic-inductive flowmeter with effective compact electronics and IO-link
Instrotech
Flow Measurement & Control
KOBOLD has combined two of its proven components, the successful type MIK magnetic-inductive flow meter and the popular U-PACE compact electronics, creating an exciting new compact flow instrument at the best price.
Read more...
Dosing chlorine gas safely and sustainably
Flow Measurement & Control
Chlorine gas is central to a range of industrial processes but is highly dangerous. The solution is the deployment of a system solution for chlorination from Lutz-Jesco.
Read more...
Oil monitoring solution drives performance gains for paper mill
SKF South Africa
Flow Measurement & Control
By integrating real-time monitoring with precise flow control, SKF’s Flowline oil monitor meters have significantly improved the flow rate control and performance of oil circulation lubrication systems installed on a paper mill.
Read more...
Flow measurement in mobile applications
ifm - South Africa
Flow Measurement & Control
The SU Puresonic Mobile ultrasonic sensor from ifm is characterised by its displayless design and high temperature resistance. It is ideal for mobile applications and processes with permanent media temperatures of up to 120°C.
Read more...
Optimising water quality in a building cooling system
ifm - South Africa
Flow Measurement & Control
A leading company in industrial water management has installed water treatment systems that not only optimise water quality but also help customers to improve their processes, thanks to the new insights and actions that can be generated based on the process data collected.
Read more...
New uncompromisingly simple flowmeter line for processes
Endress+Hauser South Africa
Flow Measurement & Control
The demand for simplicity in commissioning, operation and maintenance in industrial process plants has increased significantly in recent years. The new Proline 10 range of flowmeters from Endress+Hauser meets this requirement without compromise, because simplicity is the top priority.
Read more...
Rotork joins Rockwell Automation’s Technology Partner Programme
Flow Measurement & Control
Rotork has entered into the Rockwell Automation Technology Partner Programme, marking a significant step in expanding the company’s presence within the industrial automation landscape.
Read more...
printer friendly version