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Calibration Intervals
UL does not endor any vendors or products referenced herein.
UNDERWRITERS LABORATORIES INC. ASSUMES NO RESPONSIBILITY FOR ANY OMISSIONS OR ERRORS OR
INACCURACIES WITH RESPECT TO THIS INFORMATION. UL MAKES NO REPRESENTATION OR WARRANTY OF ANY KIND WHATSOEVER, WHETHER EXPRESS OR IMPLIED, WITH RESPECT TO THE ACCURACY, CONDITION, QUALITY, DESCRIPTION, OR SUITABILITY OF THIS INFORMATmichelle obama
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Copyright Underwriters Laboratories Inc. All rights rerved. May not be reproduced without permission. This document is controlled and has been relead electronically. The version on the UL intranet is the up-to-date document. Hard copies are uncontrolled and may not be up-to-date. Urs of hard copies should confirm the revision by comparing it with the electronically controlled version.
00-OP-C0045 - Issue 1..0 Data Acceptance Program
What information you are looking for (minimum requirements):
• Equipment calibration intervals. Guidance on
tting the intervals are provided in Appendix A When should you provide this
mybestinformation?
• Before the visit - Test instruments are to be
calibrated at intervals which maintain required tolerances specified in the test standard,try名扬四海歌词
manufacturer’s stated tolerances or tolerances defined by the equipment owner.
• During the visit – A review of historical
calibration records will provide details to confirm whether the calibration interval is appropriate. See Appendix A for details.
Why this requirement is important?
• Equipment accuracy has a direct impact on
test data. Reliance on stated instrument tolerances is bad on stability of the instrument during the defined calibration interval.
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Calibration Intervals
UL does not endor any vendors or products referenced herein.
UNDERWRITERS LABORATORIES INC. ASSUMES NO RESPONSIBILITY FOR ANY OMISSIONS OR ERRORS OR
INACCURACIES WITH RESPECT TO THIS INFORMATION. UL MAKES NO REPRESENTATION OR WARRANTY OF ANY KIND WHATSOEVER, WHETHER EXPRESS OR IMPLIED, WITH RESPECT TO THE ACCURACY, CONDITION, QUALITY, DESCRIPTION, OR SUITABILITY OF THIS INFORMATION, INCLUDING ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE AND EXPRESSLY DISCLAIMS THE SAME.
Copyright Underwriters Laboratories Inc. All rights rerved. May not be reproduced without permission. This document is controlled and has been relead electronically. The version on the UL intranet is the up-to-date document. Hard copies are uncontrolled and may not be up-to-date. Urs of hard copies should confirm the revision by comparing it with the electronically controlled version.
00-OP-C0045 - Issue 1..0 Data Acceptance Program
Certificates, Approval Forms, and Other Documentation
• Certificates and other related documentation
associated with testing are to be procesd in the following manner:
在线英译汉For WTDP -
o Historical records for calibration intervals
are to be retained by the client for proof of appropriate calibration cycles. UL staff is to request copies of calibration certificates and related documentation for the equipment ud in testing under the prent project .
For other DAP programs (CTDP, TCP, TPTDP, etc) –
o Clients are to index and retain copies of
certificates and related documentation for the equipment ud in testing.
o In lieu of storage of paper copies of the
documentation, the may be stored electronically.
give it a goo Retention time for the records is in
accordance with Client Test Data and TCP Laboratory agreement (L-56).
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Calibration Intervals
UL does not endor any vendors or products referenced herein.
UNDERWRITERS LABORATORIES INC. ASSUMES NO RESPONSIBILITY FOR ANY OMISSIONS
OR ERRORS OR
INACCURACIES WITH RESPECT TO THIS INFORMATION. UL MAKES NO REPRESENTATION OR WARRANTY OF ANY KIND WHATSOEVER, WHETHER EXPRESS OR IMPLIED, WITH RESPECT TO THE ACCURACY, CONDITION, QUALITY, DESCRIPTION, OR SUITABILITY OF THIS INFORMATION, INCLUDING ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE AND EXPRESSLY DISCLAIMS THE SAME.
Copyright Underwriters Laboratories Inc. All rights rerved. May not be reproduced without permission. This document is controlled and has been relead electronically. The version on the UL intranet is the up-to-date document. Hard copies are uncontrolled and may not be up-to-date. Urs of hard copies should confirm the revision by comparing it with the electronically controlled version.
00-OP-C0045 - Issue 1..0 Data Acceptance Program
APPENDIX A
1
All test equipment requiring calibration shall undergo an initial calibration before being put into rvice. Thereafter, the maximum nominal calibration interval shall be as indicated below. A calibration vendor that is accredited by a Signatory of APLAC, ILAC or EU must provide the calibration whenever possible. See 00-OP-J0026 for further guidance. 1A Calibration cycles shall be:
1B As recommended by the manufacturer of the instrument;
1C One year for electrical, electronic and mechanical test equipment; or
1D Three years for mechanical test equipment made of solid materials not subject to deterioration.
2 Calibration intervals may be extended bad on the following conditions and the reasons must be documented:
2A Passive electrical test equipment, such as current shunts, current transformers, potential transformers, may be extended to 3 years with good results for the initial calibration period and if not subject to vere u conditions.
2B Weights may be extended to 5 years if there is a laboratory procedure that takes into account us
age and has provisions for physical examination and / or intermediate checks of the weights.
2C Where there is sufficient calibration data to statistically establish a trend of the test equipment to assure good measurement results for a longer period. 3.
Calibration of equipment such as steel rules, tape measures, weights 4.5 kg or greater calibrated to ± 1% tolerance, single piece steel probes greater than or equal to 3 mm diameter with blunt ends, graduate cylinders, thermometers, steel
Calibration Intervals
UL does not endor any vendors or products referenced herein.
UNDERWRITERS LABORATORIES INC. ASSUMES NO RESPONSIBILITY FOR ANY OMISSIONS OR ERRORS OR
INACCURACIES WITH RESPECT TO THIS INFORMATION. UL MAKES NO REPRESENTATION OR WARRANTY OF ANY KIND WHATSOEVER, WHETHER EXPRESS OR IMPLIED, WITH RESPECT TO THE ACCURACY, CONDITION, QUALITY, DESCRIPTION, OR SUITABILITY OF THIS INFORMATION, INCLUDING ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE AND EXPRESSLY DISCLAIMS THE SAME.
Copyright Underwriters Laboratories Inc. All rights rerved. May not be reproduced without permission. This document is controlled and has been relead electronically. The version on the UL intranet is the up-to-date document. Hard copies are uncontrolled and may not be up-to-date. Urs of hard copies should confirm the revision by comparing it with the electronically controlled version.
00-OP-C0045 - Issue 1..0 Data Acceptance Program
impact balls, steel or plastic probes with no moving parts and sufficient structural integrity so as to not deform can be put on an initial calibration only (ICO) calibration cycle. With ICO, the equipment undergoes calibration and is then
subjected to intermediate checks to ensure that the equipment continues to meet calibration requirements. The checks shall be conducted per a defined procedure and interval. Equipment records shall include the details on the original calibration, including certificates and the like. The last and next
inspection dates shall be indicated on the equipment and in equipment records.
4. Weights do not need to be calibrated if verified with a calibrated scale before each u. The verification must be documented in the datasheets with the weighing device included in the equipment list.
5. Test equipment that is delicate, subject to frequent usage or vere conditions (i.e., shock and vibration, excessive heat or humidity, or transported) shall be assigned shortened calibration intervals.
6. Infrequently ud test equipment (e.g., once or twice between calibration cycles) may be assigned the status of “Calibrate Before U” instead of a periodic calibration.
