All instruments returned to Chell for repair or calibration must be accompanied by a completed equipment return / COSHH declaration form (calibration matrix and equipment return form 24K pdf).

The equipment return form also includes a UKAS calibration price matrix for general pressure & flow transducer calibrations. Special purpose instruments are subject to individual costing.

What level of calibration do I require?

For general process measurement and control purposes, a 5 point plus zero calibration will usually suffice. For critical applications or where the instrument will be used to calibration other instruments, we recommend a 10 point plus zero calibration. Unless specifically requested, no adjustments will be performed on your instrument if the results show it already conforms to the manufacturers published accuracy specification. At no time will adjustments be performed without your permission.

Fast turnaround

To reduce downtime we provide the option of a rapid turnaround for your instrument. Our 'Panic' service offers a 24 hour turnaround from receipt, subject to prior arrangement and 100% surcharge. The 'Priority' service offers a 48 hour turnaround from receipt, also subject to prior arrangement and a 50% surcharge.

The laboratory must be contacted before hand and an ERA number obtained prior to dispatching your instrument to us. Please note 'Panic' service is not available on high accuracy instruments requiring extended warm up times, nor on equipment requiring major repair or decontamination prior to calibration.

Special purpose instruments & requirements
Please contact the calibration laboratory for a written quotation for the calibration of special purpose instruments such as pressure or flow transfer standards & calibrators, air data test sets, aneroid barometers and multi-range flow systems.