Calibration Systems and Service

The words "calibrate" and "calibration" entered the English language during the American Civil War.

Calibration is a comparison between measurements – one of known magnitude or correctness made or set with one device and another measurement made in as similar a way as possible with a second device.The device with the known or assigned correctness is called the standard. The second device is the unit under test, test instrument, or any of several other names for the device being calibrated.

We here at Al Zahra with our experienced and technically proven team carry out the calibration process for Petroleum and Heavy Liquid equipments like Flow Meters, Fuel Dispensers etc.

Flowmeter calibration answers these questions.

To measure deviation, it is first vitally important to determine the actual flowrate. In flowmeter calibration, this is normally done by one of two methods: using a master meter, or weighing the flow to get a gravimetric reading of mass flow.

The second method involves gravimetric weighing of the amount of fluid (liquid or gas) that actually flows through the meter into or out of a container during the calibration procedure. The second component of calibration is determining the proper correction factors. It is easy to think of flowmeter calibration in terms of adjusting a bathroom scale, where we simply use a knob to zero the scale when there is no weight on it. Once this adjustment is made, the scale is "calibrated" and we may then assume that it reads correctly.

Once your flowmeter is calibrated, it may still read exactly the same under the same flow conditions as it did before it was calibrated.