[volt-nuts] Solartron (aka Schlumberger) 7081

David C. Partridge david.partridge at perdrix.co.uk
Wed Oct 4 05:08:55 EDT 2017

Those appear to be the same scan of the user manual that is hosted at www.ko4bb.com and on my website.

Good to see their recommendation of CALMET.


-----Original Message-----
From: volt-nuts [mailto:volt-nuts-bounces at febo.com] On Behalf Of Dr. David Kirkby (Kirkby Microwave Ltd)
Sent: 03 October 2017 22:07
To: Discussion of precise voltage measurement
Subject: Re: [volt-nuts] Solartron (aka Schlumberger) 7081

On 27 September 2017 at 11:09, David C. Partridge < david.partridge at perdrix.co.uk> wrote:

> I assume you've seen my website: <http://perdrix.co.uk/
> Solartron7081/index.htm>?   The last corporate owner of the Solartron
> brand was Ametek, and their branch in Farnborough did calibrate them up to
> at least the late "noughties".  I don't know if they still do.   The full
> service manual and factory calibration instructions are on my website.

FWIW, I received an email from Ametek saying:

"Support on this product has now ceased – but please find attached, copy of the original brochure / operating manual which may be of use. The company in the UK which would do a good job is CALMET at Kingston"

Calmet Laboratory Services are a UKAS accredited calibration laboratory.
I've not looked at what their uncertainties are.

I stuck copies of the documents sent to me by Ametek at


The MD5 checksums are

drkirkby at hawk:~/km.new/manuals/Solartron$ digest -a md5 *
(7071_7081_brochure.zip) = 26db83139e8a765f1083c972a1a507a7
(7081_Operating_Manual_Part_1.pdf) = 2a396d8653815cf450c215a28513b3c3
(7081_Operating_Manual_Part_2.pdf) = d861d8dc3c4db187e61d27b8fde35eb2

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