History - The Evolution of a Calibration Company
1967 The Plessey Company | Based in Titchfield, Hampshire, Plessey Calibration was set up initially to calibrate test instruments for other Plessey organisations throughout the UK . This in turn lead to a commercial facility offering a calibration service to many other organisations. 1974 Gain BCS Accreditation | BCS (British Calibration Service) accreditation was achieved which was subsequently replaced by NAMAS (National Measurement Accreditation Service) and now UKAS (United Kingdom Accreditation Service). Absolute Calibration holds UKAS accreditation for many of our measurement parameters including electrical, temperature and humidity. 1982 Allied Calibration Services formed | The Plessey Company decided to concentrate on core activities and sell the calibration business to the managers of the calibration company. Allied Calibration Services was formed and the operation moved to new premises in Portchester, Hampshire, in 1985. 1986 First Cal Lab to Obtain BS 5750 pt2 | Allied Calibration were the first calibration operation to obtain BS5750 and now operate in accordance with BS EN ISO9001:2008. 1987 AQAP Obtained | AQAP qualification, the quality standard operated by the Ministry of Defence was achieved. The MoD now uses ISO accreditation as their qualifying standard. 1989 Temperature & Humidity Laboratory Opened | Diversification into the niche calibration products of temperature and humidity was highlighted as a growth area and the acquisition of Siemens temperature calibration facility in Hampshire carried out. The facility was relocated to Portchester and new Isotech mixed medium calibration baths purchased. UKAS accreditation was later granted.
| 1996 Pressure Laboratory Opened
| 1998 MBO - Absolute Calibration formed 2007 New Website & On-Line HelpDesk Launched | Customers can obtain a login to view both work-in-progress and historic data of all instruments calibrated since 1999 on our On-Line HelpDesk. Calibration certificates can be viewed and re-calibration reports produced - all data downloadable to an excel spreadsheet. 2008 On-Line Instrument Shop Launched | Absolute's On-Line Instrument Shop gives new and existing customers the ease of purchasing calibrated instruments from one supplier instead of buying an instrument then sending it away for approved calibration. This not only reduces delivery times but also on order costs as only one order has to be raised. Plus, of course, you will be ordering from an approved supplier. Reduced calibration costs for new instruments apply as well as discounts for existing customers.
| 2008 UKAS Lower Resistance Uncertainties These new resistance uncertainties place Absolute Calibration comparable with the second best calibration laboratory, to the National Physical Laboratory (NPL), in the UK.
| 2010 -90°C UKAS Temperature Calibration ![]() | |||||||||||||||||||||||||
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