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High accuracy Promass F reduces wastage

Supplier: Endress+Hauser Australia

In any manufacturing process, the reduction of waste is central to increased profitability. A core requirement to accomplish waste reduction is accuracy in measurement. In the competitive and highly regulated food industry, for example, batches need to maintain consistency and quality and this requires accurate measurement of the various ingredients. Inaccurate measurements may lead to bad batches that need to go through an expensive reprocessing stage or worse, discarded.


It is much the same in other industries such as mining, pharmaceuticals and water/wastewater treatment which require the addition of costly chemicals in just the right amounts through the process.

Improving accuracy in flow measurement is therefore of paramount importance for companies that seek to minimise waste and improve efficiency. Endress+Hauser’s Promass F has been a popular flowmeter choice across a variety of process industries.

The company has now enhanced the software and the design and boosted the accuracy of the Promass F. What really sets the Promass F apart from its competitors is the use of wet calibration to test every instrument coming out of its factories. In this process, Endress+Hauser wet calibrate every Promass F flowmeter on a high accuracy flow rig.

In wet calibration, the volume of liquid that has flowed through the test meter is compared to the initial reference volume and the errors calculated. Wet calibration thus delivers the best possible accuracy when the flowmeter is put in actual use.

Most other flowmeter vendors compare flow readings of their meters to that of a master meter. This method can unfortunately lead to inaccuracies as the master is calibrated at set intervals and its accuracy in between calibrations may be questionable.

Flowmeters are often used to control dosing – for example chlorine in water treatment plants, flocculants in mining or additives in food. This process must be accurate, else the end product will suffer in quality; the process may require rework or expensive additives may be wasted.

The accuracy of the flowmeter truly determines whether a process delivers optimum product quality or contributes significantly to wasted expense, material and opportunity. Endress+Hauser employ the most accurate method of wet calibration for its Promass F as it is a direct volume-to-volume comparison without the need for any secondary reference as in the case of master meter method.

In the food, mining, water/wastewater treatment and chemical industries, the new high-accuracy Promass F can certainly reduce wastage and have a positive influence on profitability.