Hello All,


I am having a bit of an issue with my Sercon 20-20. It turns 23 years of age this month so I fully appreciate that it may have a few ‘quirks’ by now. After having issues with the focus amongst many other issues I have changed the source board, the digital board and the adapter board in the last month or so and I still have an issue with the ion repeller. When set at ‘0’ I get a set point reading of ‘6.77’ and an actual of ‘16.54’, I changed the setting in the software to ‘-2’ and the set points and actuals did not change. I have checked for continuity within the source itself and from the source board to the source and there is no issue. I am at a loose end now…help me…any ideas?


Luke Harrold


Research Technician

Soil Isotope Group


Office: G09

Labs: G.01,G.05 and G.34


School of Biological Sciences,

Cruickshank Building,

University of Aberdeen,

St Machar Drive,


AB24 3UU


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The University of Aberdeen is a charity registered in Scotland, No SC013683.
Tha Oilthigh Obar Dheathain na charthannas clàraichte ann an Alba, Àir. SC013683.