Process Metering is not to be confused with Meters designed for billing purposes. All  the devices mentioned in our other pages are "billing devices" but to add value to our understanding we must appreciate that although meters used for billing purposes could be using similar technologies to that of a process meter,they are normally looked upon differently. The world of monitoring and control is sometimes referred to as PCI (Process Control and Instrumentation)  + Measurement.  Here are some examples shown in the following videos that might help clarify the difference in applications to a novice to the process flow meter and metering. The first example is measurement of water in a pipe that is being fed back into a pumping system. It is not necessary to bill anyone for this water. The point of the exercise is to determine the flow rate of the liquid and this flow data will be used as part of a study which will determine the water pumping efficiency which could related to pump conditions (if the pump needs repair) sizing (pump undersized) or inappropriate piping etc. The point is that this particular instrument is a tool used to troubleshoot a condition or actually verify that nothing is actually wrong. It is possible to rent flowmeters of this type or purchase them for frequent usage.This device is not normally permanently installed into a process and is an example of a kind of  test meter.


The next example of a process meter is a Gas Meter using a thermal mass principle of measurement. These gas meters will be used to verify and control gas rates in projects that require accurate process data for various types of gases.


These might be used in industries and processes such as Nano Technology, Fuel Cell Research, Semiconductor, Mass Spectrometry and general scientific research. These meters are different from the one mentioned above being that they are normally permanently installed in a process pipe containing a gas. The measure not only the volumetric flowing rate but also the mass. This is because a gas can vary in molecular weight and it is important for certain operators to not only have volumetric information on flowing rate but also mass data. One of the newer applications is Biogas Mass Flow and is an important instrument that collects data for third party verification services who will be instrumental in reports for the biogas plant. These reports might determine whether or not the company is worthy to receive such things as carbon credits.


Measurement is a fascinating world and it is not possible to mention all the kinds of process equipment that are being used to measure and gather data in one page but this next is worth mentioning and might be an eye opener to someone interested in the oil and gas business. it is a downhole meter and designed to help operators who are using advanced well analysis software to determine the productivity of a well with a view to optimizing production i.e. it monitors water production to prevent something called "coning" and this information is crucial to any enhanced hydrocarbon recovery program or system.

We would like to thank the flow meter directory for their contributions in helping make this particular page.