Solartron VM1484 True RMS voltmeter - UK Vintage Radio Repair and Restoration Discussion Forum

XTC · 18th Jun 2007, 8:16 pm

I've just acquired a Solartron VM1484 True RMS voltmeter. It almost works, that is, it fires up and gives a reading within about 25% of what's expected on all ranges. I guess that it's in sore need of recalibrating and probably has a few precision resistors which are no longer precision. In other words, it needs a good going over.

Can anyone help with a service manual and cct diagram or even just setup instructions?

Pete.

GMB · 19th Jun 2007, 11:58 am

The manual is now available from my web site:

http://home.btconnect.com/gmb

Sorry about the quality but the original copy I have turned out to be not very good.

By the way, I think this voltmeter may have gone out under different badges too.

XTC · 19th Jun 2007, 12:19 pm

Thank you very much.

The manual is a lot better than wading in with heroic guesswork.

If I come across a better copy, I'll let you know.

From the manual, it uses a Weston Instruments patent and Solartron and Weston Instruments were both part of Schlumberger at that time, so I wouldn't be surprised if it was rebadged or built under licence in other countries.

Pete.

18th Jun 2007, 8:16 pm	#1
XTC Retired Dormant Member Join Date: Oct 2004 Location: Bristol, UK. Posts: 837	Solartron VM1484 True RMS voltmeter I've just acquired a Solartron VM1484 True RMS voltmeter. It almost works, that is, it fires up and gives a reading within about 25% of what's expected on all ranges. I guess that it's in sore need of recalibrating and probably has a few precision resistors which are no longer precision. In other words, it needs a good going over. Can anyone help with a service manual and cct diagram or even just setup instructions? Pete.

19th Jun 2007, 11:58 am	#2
GMB Dekatron Join Date: Aug 2003 Location: near Reading (and sometimes Torquay) Posts: 3,095	Re: Solartron VM1484 True RMS voltmeter The manual is now available from my web site: http://home.btconnect.com/gmb Sorry about the quality but the original copy I have turned out to be not very good. By the way, I think this voltmeter may have gone out under different badges too.

19th Jun 2007, 12:19 pm	#3
XTC Retired Dormant Member Join Date: Oct 2004 Location: Bristol, UK. Posts: 837	Re: Solartron VM1484 True RMS voltmeter Thank you very much. The manual is a lot better than wading in with heroic guesswork. If I come across a better copy, I'll let you know. From the manual, it uses a Weston Instruments patent and Solartron and Weston Instruments were both part of Schlumberger at that time, so I wouldn't be surprised if it was rebadged or built under licence in other countries. Pete.