Category : Measurement, test and control instrumentations > Weighing components and systems, strain gauges, load cells, strain measurement

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The latest valve bag filling machines from UK manufacturer, Qualipack, have passed the UK’s Weights and Measures certification tests allowing the machines to be used for legal measurements. The machines feature HBM’s PW12BC3 single point load cell and WE2110 digital weighing indicator for improved accuracy.
Valve and open top bag filling machines are commonly used in industry for filling a wide range of bags with various products ranging from particles, granules through to fine powders. Qualipack’s Managing Director, Mike Lee said, “Speed and accuracy are very important for these machines”.
Qualipack’s machines normally have a maximum capacity of 25 kg per fill with 40 fills needed to fill a one tonne bag. By using HBM’s equipment, Qualipack’s machines now achieve accuracies of within 20 g of the target weight.
HBM’s digital indicator WE2110 allows cut off points to be easily set. These enable the bag to be filled rapidly until the first set point is reached. This then reduces the machine’s speed allowing the bag to be slowly topped-up until it reaches its final target weight at the second set point.
Qualipack’s machines are semi-automatic since the bag has to be manually positioned over the feeder tube. Mike Lee said: “It would cost about three times as much to make a fully automatic machine since they are very complex and require considerable technical backup”.
Qualipack’s machines are maintenance free and can be stripped for cleaning without using any tools. The machines can be ordered in a wide range of capacities with various functions and painted in various colours. Mike Lee commented, “Once a customer has used a Qualipack machine they invariably come back to us if they need more machines.”

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