ORP meter

[Charlie Davidson]

The Millwaukee ORP controller I just got. Started off reading 99 and in 15min reading only 113.. It is slowly rising.. but is this normal?
(my SPS, Acan, chalice all look good - so i know its not 113 :lol: )

 

[plantguy]

I usually soak my probes for a few days before calibrating, or trusting any readings they give. Give it a couple days, then calibrate with 400, and you should be ready to go.

 

[Charlie Davidson]

this is supposed to be factory calibrated .. according to instructions... I too --thought you had to calibrate.
125 now

 

[plantguy]

Yeah, Im sure they do calibrate, but I still at least double check with a known standard. Shipping can do all sorts of things to gear.

And FWIW, Ive had a couple that took over a week to get stable, and heard of a few that took 14 days before they were reading correctly.

Another thing to try is to move the probe, and base unit around a bit, and see if you have large swings on the reading. Sometimes they are prone to electrical interference from pumps, heaters, other probes, ect...

 

[Charlie Davidson]

171 this morning...

 

[Jeremy B.]

This is nothing to worry about at all. ORP probes can take 3-5 days to come up to a normal reading and get broke in so to speak. Let it set for a few more days, and the reading should be balanced out.

Thanks,
Jeremy

 

[Charlie Davidson]

151 this morning at 7am... and 213 at 9am
It seems more confused than I am! :lol:

 

[Charlie Davidson]

It did finally settle out at 330... Thanks guys
One of the bulbs went bad after 15min burn time, I emailed for credit, but have heard nothing back..

 

[Jeremy B.]

Hey Charlie, I sent you an email earlier this morning, check your spam box to make sure it didn't go in there.

Thanks,
Jeremy

 

[Charlie Davidson]

I got it, thanks..