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In cooperation with graviCal GmbH we offer one specialized DakkS calibration service for masses and scales. As an accredited laboratory for masses and scales, graviCal supports you in defining and documenting testing and calibration routines. Together we will develop a standard operating procedure (SOP), which will be thoroughly reviewed. We advise you on determining the optimal testing and calibration intervals and determine the maximum permissible measurement deviations. Rely on our expertise and quality assurance through DakkS certification for precise and reliable calibrations of your measuring devices.
The abbreviation DAkkS stands for Deutsche Akkreditierungsstelle GmbH. Since December 17, 2009, this has been the successor to the German Calibration Service (DKD) in the field of accreditation (EC Regulation No. 765/2008). There is no difference in the measurement technology between calibration according to DAkkS and the previous calibration according to DKD.
Determining and documenting the deviation of the display of a measuring device or the specified value of a test equipment from the true, actual value of the measured variable.
If certain things need to be measured, you need scales and testing equipment. It is of fundamental importance that the measured values displayed by the scale are also “correct” because incorrect or inaccurate measurement results can quickly have economic consequences and result in high costs. Therefore, electronic measuring devices should be checked regularly. During this process, these are then calibrated correctly and adjusted if necessary. During calibration according to the DAkkS specifications, the entire procedure and the traceability to the national standard are precisely documented. In this way, an electronic scale, a test weight or another measuring device becomes a reliable measuring and testing tool. As a company with integrated, certified quality management (e.g. according to ISO 9000ff, TS 16949, VDA, FDA, GLP, GMP, …) you are even obliged to check your measuring equipment and scales regularly. fen. This normative requirement is met with an internationally recognized DAkks calibration certificate that confirms a test according to DIN EN ISO/IEC 17025:2005.
If you want a calibration to be not only valid but also recognized, it must be carried out by a calibration laboratory that has been accredited by DAkkS. These calibration laboratories must provide proof of a valid DAkkS accreditation certificate.
Further information can also be found on the website of the German Accreditation Body (DAkkS)
Test standards (weights) used in different laboratories must agree with each other. It is also important that all weights used for testing, adjusting and calibrating scales are based on the original kilogram (or, since May 2019, it has been derived from Planck's natural constant) or a national standard. are audible.
Due to this traceability to a generally recognized reference quantity, such as the original kilogram, measurement results are placed on a generally recognized basis as the basis for the accuracy of the results - an elementary prerequisite for the reliability and comparability of results.
The comparative measurements for traceability are carried out in national metrological institutes, accredited calibration laboratories and calibration authorities. Each connection (return) is documented by a test or calibration certificate in which the detected deviation from the nominal value and the measurement uncertainty are stated.
Factory calibration | Calibration (according to DAkkS) | Calibration |
---|---|---|
Factory calibration is not regulated by law. | Calibration according to the DAkkS specifications is not regulated by law. | Calibration is regulated by law. |
Reason for factory calibration “Outlier” for devices, equipment was reactivated after a long time, general check "Does my equipment still work properly?". |
Reason for calibration If the test weight or scale is used within a quality management process , a calibration should be carried out beforehand according to DAkkS specifications. |
Reason for calibration It is required by law as soon as you are involved in so-called ‘trade transfer” participates. This includes, for example, the sale of goods by weight, the calculation of fees by weight as well as the production or control of pre-packaged packages, etc. Further information on this can be found in the calibration law. |
What can be factory calibrated? Test equipment and measuring devices that do not follow a calibration routine according to DAkkS are subject to and are not subject to calibration. |
What can be calibrated? All error-free test equipment can be calibrated according to DAkkS.< /td> |
What can be calibrated? Only “verifiable” items can be calibrated. Scales with type approval and test weights that are calibrated in accordance with the OIML (Organization Internationale de Métrologie Légale) requirements. |
Expiry Is not set. Is carried out, for example, in the same way as the conformity assessment (calibration). The measurement deviations are specified using calibrated weights. After completion, a factory calibration certificate will be issued. |
Process A laboratory accredited by DAkkS tests the test equipment for accuracy through traceability internationally recognized standards. Such a calibration may only be carried out by highly qualified specialist personnel who have presented themselves to the DAkkS certification body. A calibration certificate will then be issued. |
Procedure Balances and weights are checked for calibration error limits (maximum permissible errors). This is done by the manufacturer (only during manufacturer verification) and the calibration office (within the legally prescribed intervals). A stamp certifies that the measuring device met the requirements at the time of the test and that it was “correct” when handled in accordance with the rules of technology within the re-verification period. remains. |
Validity The DIN EN ISO 9001:2015 (7.1.5.2) leaves the user to select the appropriate testing procedures. As a rule, a factory calibration is sufficient provided that traceable test equipment was used. |
Validity International recognition is achieved through multilateral agreements on mutual recognition between EA (European co-operation for Accreditation) and ILAC (International Laboratory Accreditation Cooperation). In Germany, the German Accreditation Body (DAkkS) monitors this. |
Validity A declaration of conformity with CE applies to the European Union -Labeled as “first attempt”. Nationally, only re-verification and national declaration of conformity are recognized. |
How often? A factory calibration can be carried out as often as the operator of the measuring devices requires and testing equipment makes sense. According to 9001:2015, the user sets the cycle after use. |
How often? The operator of the measuring devices and test equipment is responsible for compliance with the respective recommended periodic recalibration periods. |
How often? By law, the re-calibration periods for test equipment and measuring devices are set nationally Specifications set. |