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sales@signatrol.com

Tel: +44 (0)1684 299 399

Signatrol Calibration Services

Why do I need to calibrate our equipment?

The calibration of equipment is an essential part of any quality control system, such as ISO 9001:2000. Your record keeping may be meticulous but if the equipment you use to record the information is not accurate, the records are meaningless.

All quality systems require that the measurement equipment used to verify or control quality must be regularly calibrated. All calibrations must be traceable to national or international standards (ISO 9001: 2000 section 7.6). A record of calibrations must be kept and corrective action taken when measurement equipment is found to be out of specification. This equipment must be calibrated either at regular intervals or prior to use. 

Whenever calibration is carried out, it must be traceable to an approved laboratory. Test equipment must be adjusted as necessary, identified as being in date and tamper protected.

How often do I need to calibrate our equipment?

The need for calibration depends on a number of factors:

• the quality and stability of the measuring equipment
• the initial accuracy specification
• the importance of the absolute measurement accuracy
• whether there is a secondary back-up device
• manufacturers’ recommendations

Based on this information, a calibration schedule can be created to ensure that test and measuring equipment are functioning within expected tolerance limits. Implicit in the application of calibration intervals is the understanding that the calibration values may change over time and will require periodic recalibration to be maintained within acceptable limits.

A calibration manager will often rely on manufacturers’ recommendations based on the assumption that they know their product better than anyone else and have conducted tests at the design stage. Alternatively, a calibration manager may choose to check the calibrations at short intervals (i.e. every three months) and record the amount the parameter drifts between calibrations. Using this method, a model can be created that defines the maximum period between calibrations.

By optimising the interval between calibrations, unnecessary calibrations can be minimised and unnecessary costs avoided. Furthermore, this optimisation will improve compliance with regulatory directives and ensure maximum compliance with reliability targets.

Do I need a calibration certificate with a new product?

A new product has almost certainly been calibrated by the manufacturer with certified calibration equipment. Therefore, it is fair to assume that the product meets the published calibration specifications. Many customers ask for a certificate of conformity to confirm the product’s compliance and they deem that satisfactory to establish the initial calibration schedule. However, with regard to critical applications, some customers require a valid calibration certificate and ask for this as an additional safeguard.

What does calibration management involve?

Calibration managers are facing increasing pressure to minimise costs and improve compliance while increasing the reliability of measurement and test equipment. They must ensure that:

• Each piece of equipment is calibrated according to the specified schedule
• Each piece of equipment is marked with an appropriate label shows a unique reference number, the calibration date and the date the next calibration is required
• Calibrations are inviolate and cannot be altered by unauthorised personnel
• A record of the calibration is maintained and retained for historical purposes

How can Signatrol help with our calibration management?

All Signatrol data loggers have a calibration date reminder function. This means that you do not need to operate a separate re-calibration reminder system. The interval between calibrations is set by default to 12 months, but can be adjusted by an authorised person. A reminder is shown on the screen of the data logger when the calibration is due. This reminder is reset at the time of calibration.

We offer a fast turn-around temperature and humidity calibration service for Signatrol and other brand data loggers and handheld thermometers that helps to minimise disruption and cost. When we calibrate our own brand equipment, the calibration date is reset. This does not occur when we calibrate other brand equipment.

We use UKAS-accredited equipment to carry out temperature and humidity calibration, and National Physical Laboratory (NPL)-accredited equipment to deliver our process signal calibration services. Each piece of equipment that we calibrate is issued with an individual calibration certificate. This certificate is retained for a minimum period of 10 years should your original copy be lost and a replacement required.

Our Traceable Calibration Certificates

Here is a list of our calibration equipment and the links to their calibration certificates. This enables you to follow our calibration back to UK National standards or UKAS going right back to 2008.

Click on the certificate number to view and download the actual calibration certificate. Please ensure you match the correct serial number as we do have multiple instruments of the same type.

Instrument Serial Number Certificate Valid From Valid To
Agilent 34401A Digital Multimeter    MY41050872 17002/R 3rd November 2009 3rd November 2010
Agilent 34401A Digital Multimeter MY41050872 18944 2nd November 2010 2nd November 2011
Agilent 34401A Digital Multimeter MY41050872 20708 11th November 2011 10th November 2012
Agilent 34401A Digital Multimeter MY41050872 23378 8th March 2013 7th March 2014
Agilent 34401A Digital Multimeter MY41050872 25593 06th March 2014 5th March 2015
Agilent 34401A Digital Multimeter MY41050872 27936 27th February 2015 26th February 2016
Instrument Serial Number Certificate Valid From Valid To
ETI Reference Thermometer Including Sensor D12350659 181012/N3 18th October 2012 17th October 2013
Instrument Serial Number Certificate Valid From Valid To
ETI Reference Thermometer Including Sensor D12360142 251012/N2 25th October 2012 25th October 2013
ETI Reference Thermometer Including Sensor D12360142 200813/N6 20th August 2013 20th August 2014
ETI Reference Thermometer Including Sensor D12360142 050814/N12 5th August 2014 5th August 2015
Instrument Serial Number Certificate Valid From Valid To
ETI Reference Thermometer Including Sensor D13510524 080114/N10 8th January 2014 8th January 2015
ETI Reference Thermometer Including Sensor D13510524 220115/N1 21st January 2015 21st January 2016
Instrument Serial Number Certificate Valid From Valid To
Eurotron Calibrator                     0049272 180909-N9 18th September 2009 18th September 2010
Eurotron Calibrator 0049272 280910-N15 23rd September 2010 23rd September 2011
Eurotron Calibrator 0049272 031011-N1 29th September 2011 28th September 2012
Eurotron Calibrator 0049272 191012/N1 17th October 2012 17th October 2013
Eurotron Calibrator 0049272 230813/N21 22nd August 2013 22nd August 2014
Eurotron Calibrator 0049272 290814/S3 28th August 2014 28th August 2015
Instrument Serial Number Certificate Valid From Valid To
Gallenkamp Thermometer              CE09/JN/10104-1 R34018T 9th October 2008 9th October 2009
Gallenkamp Thermometer CE09/JN/10104-1 U38377T 12th October 2009 12th October 2010
Gallenkamp Thermometer CE09/JN/10104-1 U40620T 13th October 2010 13th October 2011
Gallenkamp Thermometer CE09/JN/10104-1 U42743T Issue 2 26th October 2011 13th October 2012
Gallenkamp Thermometer CE09/JN/10104-1 U45112T 19th October 2012 19th October 2013
Gallenkamp Thermometer CE09/JN/10104-1 U47483T 16th October 2013 16th October 2014
Gallenkamp Thermometer CE09/JN/10104-1 60439 24th October 2014 24th October 2015
Instrument Serial Number Certificate Valid From Valid To
Hewlett Packard  3478A Digital Multimeter   2911A61208 22668 2nd November 2012 2nd November 2013
Hewlett Packard  3478A Digital Multimeter 2911A61208 27148 24th October 2014 24th October 2015
Instrument Serial Number Certificate Valid From Valid To
Keithley Voltage Source K30448527 27149 24th October 2014 24th October 2015
Instrument Serial Number Certificate Valid From Valid To
Rotronic HygroClip S 44787147 16910a 27th November 2009 27th November 2010
Instrument Serial Number Certificate Valid From Valid To
Rotronic HC2-S 60785619 19898 10th November 2011 9th November 2012
Rotronic HC2-S 60785619 24075 / 24039b 25th October 2013 25th October 2014
Instrument Serial Number Certificate Valid From Valid To
Rotronic HC2-S 60508298 18287 9th November 2010 9th November 2011
Rotronic HC2-S 60508298 22315 25th October 2012 25th October 2013
Rotronic HC2-S 60508298 25527 18th September 2014 18th September 2015
Instrument Serial Number Certificate Valid From Valid To
1/10th DIN Temperature Probe 74217-01 000001520 12th October 2010 12th October 2011