KHD - Sudden Change of Measurement Value

[mlandscape]

Only been running the KHD for three weeks and yesterday got a one-off higher reading moving from a consistent 8.2 to 8.5 and then suddenly jumped to 9.1 from 8.2 over an 8 hour period and then gradually back again to 8.2 in just over 24 hours.

Anyone any ideas why this would occur as there is no changes been made within the system and I have not yet got control set up. - see screenshot


12377


Many thanks

[Vinny]

It looks like an air bubble made its way into the sample tube.

[mlandscape]

Thanks, Vinny seems to have settled down again. By sample tube do you mean the tube carrying the water from the aquarium or in where the probe is positioned

Many thanks

[Vinny]

Yes, the tube that carries the water from the tank to the KHD.

[mlandscape]

OK thanks I'll keep my eye on it