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The nature of many processes employed in the Bodyshop environment requires accurate measurement and use of a number of materials. One main area in the Bodyshop process that requires calibration especially given any PAS 125 or ISO requirements is that of Scales used in the Paint mixing room.
Due to the introduction of industry 'standards' such as Work Provider bodyshop approvals, PAS125 & ISO it is now important to ensure your bodyshop weighing equipment is regularly calibrated by ISO 9001 approved calibration professionals. Whilst often the measuring & scale equipment is loaned to a bodyshop by the supplier, it is the responsibility of the bodyshop to get the equipment calibrated. Any equipment operating inaccurately could affect paint colour matching as an example, affecting re-work, throughput and profitability.
Generally in order to meet the majority of main industry standards, the focus on accuracy of weighing equipment centres on three aspects; the equipment actually being calibrated, what are the defined intervals for calibration and what information is held on calibration for each piece of equipment. The piece of information required is generally a Calibration Certificate. In all 'standards' situations, it is recommended that exact calibration requirements are clarified and understood.
Calibration can be defined as the comparison between the output of any measurement device against a standard value and will naturally require a standard weight against which to be measured. From a technical perspective, calibration determines the difference between the scale readout and the actual weight on the weighing platform to determine accuracy. An 'adjustment' may be needed to bring a scale into the state of accuracy required for its intended use.
The Engineers of our Service Partners test the ability of a scale to have consistent sensitivity throughout the weighing range. The test requires several nominally equal weights, each a fraction of the weighing capacity which group together to cover the weighing range of the instrument. Additionally, it is essential for a scale to have consistency in terms of weights and this is tested by weighing two stable objects separately, each of one half the weighing capacity. The sum of the two readings should equal the reading obtained when both objects are weighed together.
A calibration certificate can only be attained at the place of installation for a scale. The reasons for this approach include that any location in the world is positioned differently from "magnetic north", thus affecting the acceleration of gravity & thus affecting the force a cal mass exerts on the balance's weighing sensor. Additionally, the barometric Pressure makes a difference and if the balance is calibrated in the hills of the Pennines and you're at sea level say in Cornwall, your elevation is different affecting the barometric pressure.
Brown Brothers Distribution works in partnership with Milsteda Systems Limited who are able to provide Calibration Services to meet your individual Bodyshop needs.Calibration services start from only £75, for more information please click here.