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Classification: NPL Management Ltd - Commercial

Dear Matt, It’s a good idea to have a calibration factor rather than adjustment as it allows a calibration history to be built up, that shows long term drift of the meter & sensor. This enables you to get a good estimate of the uncertainty of measurement if you’re doing a Guide to Uncertainty in Measurement compliant budget.

Regards

Simon

From: British Medical Laser Association [mailto:[log in to unmask]] On Behalf Of sandy mosse
Sent: 25 October 2012 18:49
To: [log in to unmask]
Subject: Re: Laser Power meter calibration : Ophir

These people will certify if the equipment is within calibration but they will not adjust it to improve it if it is out of calibration.

Optical Test and Calibration Ltd

21-23 Campus road

Listerhills Science Park

Bradford BD7 1HR

On 25 October 2012 15:31, Williamson Matt <[log in to unmask]> wrote:

Dear list

We recently acquired the Ophir range of laser power measurement devices.

Could anyone let me know if there are independent calibration services out there.

We were advised our meters would be away for 5 weeks!

We also have had faults reported on our heads, which is surprising as these haven’t had heavy use

Any comments on /off list

Thanks

Matt

Matt Williamson

Head of Physiological Sciences

Medical Physics & Engineering

Leeds Teaching Hospitals NHS Trust

Tel 01924 541640

mob 07768 987956

[log in to unmask]

--
Dr Sandy Mosse
National Medical Laser Centre
Dep't of Surgery, UCL
67-73 Riding House St.
London W1W 7EJ
+44 (0)20 7679 9073 / 9060

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