Accreditation COFRAC n° 2.1525
This calibration is composed in 2 parts.
:
- Ackowledgment
- Calibration Points
Above 660°C, probes with lenght below 300 mm can not be calibrated.
Calibration uncertainty will be more important above 250°C for probes with length below 400mm.
In bath or dry blocks with 3 uncertainty levels.
Calibration uncertainties are depending on thermocouple type and uncertainty level. Thermocouples must be calibrated with their extension wires or compensation wires.
| Temperature Chain calibration |
3 uncertainty levels.
Temperature chain can be built with a thermometer and one or more sensors.
| Portable dry block calibration |
Out of COFRAC accreditation.
A temperature profile at the bottom of insert on 20mm, on the higher temperature point.
| Temperature Logger Calibration. |
Logger must be sent with the esploitation software and serial link.
Calibration must be performed in a bath in a waterproof bag.Uncertainty is about 0,1°C, plus the stability of the sensor and the logger resolution.Temperature range is -6°C to 100°C. Waterproof loggers can go up to 250°C.
| Surface sensor calibration |
OUT OF COFRAC ACCREDITATION.
Only sensors supporting a low exposition to oil fumes can be calibrated at temperature above 100°C (250°C max).
Temperature test report. Test against a standard, a reference : this reference can be the instrument user manual, a datasheet, a standard ( EN60751, EN60584-2 ... ) or anything else.
A correspondance table is supplied, degree by degree, establishing deviations against display, or the standard (EN60751, EN60584-2 ).
Electricity-Magnetism Calibration. Accreditation COFRAC n° 2.1524
4 proposals
.
Multimeters, calibrators,panel meters and decade resistance boxes .This calibration has 3 parts
et des boites de résistances à décades :
- Acknowledgment
Ackowledgment will determine the calibration uncertainty level. At Level 1, measurements are calibrated centering the input valueagainst ranges limits.
- Performance
Performance corresponds to a domain and is composed by 5 points.La mise en oeuvre correspond à un domaine et comprend
l'étalonnage de cinq points. Seven domains are belonging to our calibration spectrum.domaines entrent
dans le cadre de l'accréditation :
- DC Voltage
- Thermocouple calibration with external CJC
- Thermocouple calibration with internal CJC ( type
J, K, T, S, N or E )
- DC Current
- resistance DCrésistance en courant
continu
- Voltage AC
- AC current
A performance is engaged for each domain.
Other calibration domains can also be proposed such voltage sources, capacitance, frequency, after discussion with our metrology department.
Contact cleaning and Calibartion at each position of each decade.
Additivity control on 6 points.
| Standard resistor or shunt calibration |
Calibration is performed in air (20A max for shunts).
A calibration and a verification will be performed following a program designed by our Calibration laboratory and our R&D department.
The calibration uncertianty is adjsuted to the instrument specifications. In case of non conformity, an adjustment can be performed. On request , a calibration after adjustment can also be performed.
Electrical test report
Two documents can be edited after a calibration.
A test report, with a verdict and/or a calibration certificate
The test report will indicate a verdict: pass/fail according to the original specifications. The values observed during calibration will be indicated.
A detailed program is available on request
Calibration and test report edition are realized according to french standard NFX 07-011. Instruments used for measuring are traceable to National standards. This traceability is proof is supplied with test report.
The test report will show a conformity of the instrument to the manufacturer specifications. in case of non-conformity, we can adjust the instrumentaccording to the original specifications.
Current calibration( Electricity
)
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