Measure Flow Of Liquids And Gases With A Portable Flow Meter

2007-05-02 10:04:19

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When you have cartons on a pallet flowing from one end to the other, it is fairly easy to quantify or count the rate of flow. You can easily count the carton flow per unit of time and say carton flow rate is so many cartons per hour. It is not as easy to quantify when you are measuring the flow rate of bulk liquids or gases moving from one point to another, especially if you are an outside plant service technician. For this task, you will need a portable flow meter.

There are several types of portable flow meters. You may be familiar with mechanical flow meters. The most common portable flow meter of this type is the piston meter, normally used for measuring liquid flow in standard pipes measuring up to 40 mm in diameter (about 1.5 inches). Other portable flow meters are vortex, magnetic, ultrasound and coriolis flow meters with different operating principles.

You may be amused to know that the working principle of the venturi meter, in use today to measure the flow rate of gas moving through pipelines, has been utilized from the empire days of ancient civilization. The advent of technology has resulted in the really portable flow meters employed today. These modern flow meters incorporate electronics and thus are able to correct for parameters that could render measurements inaccurate in the past, such as variations in pressures or temperature.

Modern portable flow meters have become powerful instruments. They may have data loggers built into them, with thousands of data points and several sets of parameters stored in memory. Some units carry an infrared port which you can use to transfer data quickly to your computer. Since the basic operating principle is based on ultrasound, they measure from outside the pipes, and can measure the purest liquids to the dirtiest sewage.


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