Version 2.4 | 29th July 2020


Decision rules and Statement of Conformity
Campbell Associates Limited use the following default decision rules in the determination of the statement of
conformity for the appropriate calibration service provided. The suitability of the rule’s use will be agreed with the
customer at contract review. Full details of our measurement uncertainties are available on our Schedule of
Accreditation at the following web address:-

https://www.ukas.com/search-accredited-organisations

 

Sound level Meters to BS 7580

A PASS or PASSED statement indicates that the instrument conforms with the relevant accuracy requirements of
the testing standard AND the expanded measurement uncertainty (k = 2 for approximately 95 % coverage
probability) is no greater in magnitude than the accuracy requirements defined in BS-7580 Part 1:1997 standard.


Sound Level Meters Manufactured to IEC 61672-1:2003
The decision rules will be applied in accordance with the procedure as described in BS EN 61672-3:2006.


Sound Level Meters Manufactured to IEC 61672-1:2013
The decision rules will be applied in accordance with the procedure as described in BS EN 61672-3:2013.


Frequency Filters to IEC 61260:1996
A PASS or PASSED statement indicates that the instrument conforms with the relevant accuracy requirements of
the testing standard AND the expanded measurement uncertainty (k = 2 for approximately 95 % coverage
probability) is no greater in magnitude than the accuracy requirements defined in BS EN IEC 61260:1996 standard.


Sound Calibrator
The decision rules will be applied in accordance with the procedure as described in BS EN 60942:2003.


Tapping Machine
A PASS or PASSED statement indicates that the instrument conforms with the relevant accuracy requirements of
the testing standard AND the expanded measurement uncertainty (k = 2 for approximately 95 % coverage
probability) is within the maximum 20% of the value of the measurement tolerances as defined in 16283-2:2015,
ISO 140-6/7 standards and UKAS publication LAB 23”.


Portable Vibration Field Calibrators
The calibration and tolerances accuracy requirements used are as defined in the BS EN ISO 8041:2005 Annex A
standard.


A PASS or PASSED statement indicates that the instrument conforms with the relevant accuracy requirements of
the testing standard AND the expanded measurement uncertainty (k = 2 for approximately 95 % coverage
probability) is no greater in magnitude than the accuracy requirements defined in BS EN ISO 8041:2005 standard.

ca-logo.jpg