How to Calibrate your Salinity Probe EP 09: Apex Aquarium Controllers from Neptune Systems

March 12th, 2014
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We're going to show you how to calibrate your salinity probe here in our ninth episode of the Neptune Apex series.

Step 1: Remove the probe from your tank, blow any water out of the end and let it dry. I suggest letting it sit for a few hours to get completely dry. It's extremely important that there is no moisture present between the contacts within the probe.

Step 2: Hit the conductivity calibrate button (it should say dry conductivity probe and settling with a number).

Step 3. Once the number stops moving for 10-20 seconds, hit OK.

TIP: During this time, float the calibration solution in your tank or sump so it's the same temp as the tank.

Step 4: Select the solution you are calibrating.

TIP: A vast majority of saltwater aquarium owners will use a 53,000 solution which is thirty five parts per thousand, or approximately 1.026 specific gravity.

Step 5. Tear or clip the corner off the solution and insert probe. Hold the calibration solution with the probe in the tank so it maintained the same temp as your temperature probe (this is critical).

Step 6: Ensure one of the air holes on the probe is turned upward. Give it a few light taps with your finger to get any air out, and wait for the settling number to stop changing for 10-20 seconds. Try tapping the probe again to see if there is any air left - if the number doesn't change, hit OK.

TIP: The probe is fragile, so be sure to have a light hand when it comes to tapping air out.

Step 7: Confirm your probe is calibrated by leaving it in the solution and checking your home screen, it should read very closely to thirty five parts per thousand.

Remember if you have any issues with this process, the first step is to remove the probe completely and isolate the cord from electrical noise. Throw the temp and salinity probe in the same cup to completely remove the stray voltage issue and see if the if the readings look reasonable now.

If you have any questions about this process or tips for your fellow reefers check out the comments area down below.

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