Due to the nature of the magnetic flow meter measurement (which uses Faraday’s law to measure voltage/velocity of a liquid as it moves through a magnetic field generated by the coils embedded in the flow tube) there is a requirement for the liquid to maintain a certain level of conductivity in order to generate a […]
A distorted fluid velocity profile is one of the most common reasons for inaccurate flow meter readings. Swirls or other distortions in the flow are caused by the tees, elbows and valves that make piping systems functional. But, to keep your flow meter functional as well, there are some requirements regarding the fluid’s flow profile, […]
While selecting the proper flow meter technology for your system is critical, your ability to rely on the meter’s readings will depend more heavily on the application. Every meter technology will have its advantages and disadvantages, but it’s the nuances of your system and what is flowing through it that should garner the most attention. […]
Calibrating a flow meter can be a hassle and a headache, but there is a new industry standard in measuring liquid flow that will change your tune. Every so often flow meters need to be calibrated, meaning their performance must be compared to a standard, and the meter’s deviation from that standard must be determined and […]
Flow meters measure the amount of liquid, gas or vapor passing through a piping system. Most flow meters are designed to measure the velocity, or speed at which the fluid flows through a pipe. They use that information along with the pipe’s inner cross sectional area to calculate volume, or the amount of fluid passing […]
Now that we have established why the flow meter is the most inaccurate component of the energy measurement system, what does this accuracy/inaccuracy really mean and how does it impact the measurement? Let’s start by defining measurement. What kind of accuracy is required to make a legitimate flow measurement? Let’s break this down into three […]
As energy usage has become a lightning rod for conversation and studies regarding efficiency, the ability to measure and quantify energy consumption has become forefront in the battle to get a handle on what is being used and how efficient or inefficient that use may be. However, before we can truly measure consumption, we really […]
Magnetic flow meters are increasingly taking the place of traditional mechanical flow meter designs. While they both measure the flow of a liquid in a pipe, they do so in different ways. The most common mechanical flow meters are inserted into a pipe and use a turbine, wheel or paddle to measure velocity and then […]
Flow meter accuracy versus Flow meter turndown is a subject that gets very little attention, but has a huge impact on true measurement accuracy, especially under low flow conditions. Typically accuracy statements are established under lab test conditions with NIST traceable instruments. These measurements are made under very controlled conditions and in most cases do […]
