Salinity Probe Calibration?

[Aspect]

Hey all, having an issue with the Salinity probe on my Apex, it keeps giving me false readings. I've calibrated 3 times now this month and it will either read high or low within a week. Getting to be pretty frustrating considering the price of these "lab grade" probes. Support from BRS/Neptune is pretty much a waste of time since it takes about a week to get a reply. Seems like this is a pretty common issue too. Can anyone point me in the right direction?

 

[Clownfishy]

There could be bubbles inside the probe. Have you tried putting it in a high flow area? I do this and it blows the bubbles out and keeps the probe rock solid.

 

[gbroadbridge]

Hey all, having an issue with the Salinity probe on my Apex, it keeps giving me false readings. I've calibrated 3 times now this month and it will either read high or low within a week. Getting to be pretty frustrating considering the price of these "lab grade" probes. Support from BRS/Neptune is pretty much a waste of time since it takes about a week to get a reply. Seems like this is a pretty common issue too. Can anyone point me in the right direction?

Salinity probe issues are normally related to either bubbles or organics on the probe.

You need to find a place with reasonable flow with no agitation to cause bubbles.

Once you find that spot it will stay calibrated for quite a while.

 

[Aspect]

It's in the middle compartment of my sump after a bubble trap.

 

[gbroadbridge]

It's in the middle compartment of my sump after a bubble trap.

Without removing it from the water give it a shake and a tap on the glass. If the salinity reading changes after doing that, and giving it ten minutes to settle it's probably bubbles.

Also, a new probe can take a few weeks to stabilize.

 

[vetteguy53081]

Hey all, having an issue with the Salinity probe on my Apex, it keeps giving me false readings. I've calibrated 3 times now this month and it will either read high or low within a week. Getting to be pretty frustrating considering the price of these "lab grade" probes. Support from BRS/Neptune is pretty much a waste of time since it takes about a week to get a reply. Seems like this is a pretty common issue too. Can anyone point me in the right direction?

Turnprobe at an angle to release air bubbles which is often the culprit