[easy clean]

need to calibrate my tds metre. its an aquapro digital one which does tds and water temp. lost the box and cant remember how its done, could someone please help?

many thanks

[john tomkins]

Screwdriver in the back

[elite mike]

thanks but its not that kind. i remember having to press and hold mode button or something

something like this

 http://www.tdsmeter.co.uk/products/tds3.html

http://www.tdsmeter.co.uk/calibration_maintenance.html

http://www.tdsmeter.co.uk/TDS_Meter_Calibration_Instructions.pdf

[john tomkins]

I got one of these and thought it was a screwdriver adjustment... sorry.
This is from instructions...

Press power to turn on.

Press and hold Mode button for 4 seconds, temp reading will switch to cal.
Raise reading by pressing mode "up" button.
Lower reading by pressing down ""hold" button

When done press and hold mode buttin again to change cal back to temp.

[mci services]

http://www.daqua.co.uk/testmeters.htm

the aqua pro is second one down, if you phone doug tomorrow he will let you know, He doesn't use this site anymore

just seen your reply so its sorted anyway