So I bought a new apex and received it earlier this month. I've had nothing but trouble with the conductivity probe ever since.. It reads just under 32 ppt and I have contacted Neptune about this. After some back and fourth they told me:
"You calibrated it with solution it read 34.9~ this is normal. Broken probes would not read this well if they were non operational. Then placing it into your sump you get lower salinity. The probe is going to read what it gets based on the distribution of ions in the water it's sitting in. You cannot compare it's reading to anything else. Nothing with read number to number to our probe. Than after seeing this low number you moved it back to the bag of solution and it read 34~ again.
The probe is working as intended. The probe reading 31 in the sump is normal. As I mentioned. Our probe will not reflect values you see in refractometers or any test kits. It's a PPT reading of our own. It's operating normally."
I've tried everything from separating the probe from all wires, turning off All equipment minus apex, testing in a cup of tank water (so no flow, microbubbles, etc.), and if I add the probe in calibration solution it reads correctly. On 2 refractometers, they read 35ppt. My probe reads just under 32 in my sump and they say this is normal? It doesn't make sense why someone would be willing to spend so much $ on a system and one of the most important "levels" don't read properly? This is my first controller system so I have nothing to compare against but it doesn't seem right. I feel like I'm getting excuses by Neptune. I have tried every suggestion on forums for 2 weeks now and have recalibration a few times with a new calibration solution every time.
Thoughts? Suggestions? Thanks.
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"You calibrated it with solution it read 34.9~ this is normal. Broken probes would not read this well if they were non operational. Then placing it into your sump you get lower salinity. The probe is going to read what it gets based on the distribution of ions in the water it's sitting in. You cannot compare it's reading to anything else. Nothing with read number to number to our probe. Than after seeing this low number you moved it back to the bag of solution and it read 34~ again.
The probe is working as intended. The probe reading 31 in the sump is normal. As I mentioned. Our probe will not reflect values you see in refractometers or any test kits. It's a PPT reading of our own. It's operating normally."
I've tried everything from separating the probe from all wires, turning off All equipment minus apex, testing in a cup of tank water (so no flow, microbubbles, etc.), and if I add the probe in calibration solution it reads correctly. On 2 refractometers, they read 35ppt. My probe reads just under 32 in my sump and they say this is normal? It doesn't make sense why someone would be willing to spend so much $ on a system and one of the most important "levels" don't read properly? This is my first controller system so I have nothing to compare against but it doesn't seem right. I feel like I'm getting excuses by Neptune. I have tried every suggestion on forums for 2 weeks now and have recalibration a few times with a new calibration solution every time.
Thoughts? Suggestions? Thanks.
Sent from my iPhone using Tapatalk