Salinity Probes that work with the Apex

[Lbrdsoxfan]

Are you saying that the probe is accurate?

The Pasco probe works, been using it continously almost 6 months now.

 

[WhatCouldGoWrong71]

The Pasco probe works, been using it continously almost 6 months now.

My Neptune probe works, like a weather person, it’s not accurate. Is your pasco accurate?

 

[Lbrdsoxfan]

My Neptune probe works, like a weather person, it’s not accurate. Is your pasco accurate?

Surprisingly its OK. Accuracy is relative but frankly consistent. Within .5 ppt of a refractometer every time I have checked since I put it in service. I also have a neptune branded probe and its about the same in terms of accuracy. I wouldnt trust them as a be all, but its enough to know if something is really out of whack (or the ato dumped in a ton of water)!

BTW the Pasco 10x probe is what we decided the Neptune is based on. Just with an proprietary connector for neptune versus standard BNC for everyone else.

 

[Lbrdsoxfan]

Neptune Probe:

Pasco Probe:

Both listed:

I admit the temp compensation is prolly bananas with both tanks, but both temp probes are at least 5 years old and the A1 probe I'm thinking is +- 10 years old. That one was replaced with a used one from my apex Jr IIRC.

 

[Rimsky]

I would say that a new Pasco probe works similar to a new Neptune probe. Not better, not worse. It suffers from the same susceptibilities as the Neptune probe. For instance, if you place the probe in a location where it will tend to catch bubbles, you will have variable readings from both probes.

 

[A3LXK]

@Rimsky @kylarse ,

Is it possible to use the 0.1 probe instead of the 10x probe. The both measure in the same range but the 10x has a accurancy of plus and minus 2, but the 0.1 probe has an accurancy of .2

 

[Lbrdsoxfan]

I'm not either one, but no. Range that the probe covers is different.

 

[Rimsky]

I doubt it would work. My understanding is that is is an order of magnitude different. Perhaps with a resistor or something like that. But I’m just guessing.

 

[A3LXK]

I doubt it would work. My understanding is that is is an order of magnitude different. Perhaps with a resistor or something like that. But I’m just guessing.

So the 10x is the way to go? I just found them on Aliexpress, can you tell me if this is the right one?

 

[gbroadbridge]

The hundreds if not thousands of people reporting problems with thus probe does say something about the build quality.
There are hundreds of expertise reefers with way more experience than I have also acknowledged issues with the Neptune salinity probe.

For everyone who complains online, there are thousands who have no problems and thus no need to complain or even read the threads.

All brands of EC probes have issues in a very dirty environment such as a marine tank.

There are many methods that can be used to give the probe an easier time, however most folks simply settle on using a mounting method that does not capture bubbles but has sufficient flow to help avoid the buildup of organics.

 

[Rimsky]

For everyone who complains online, there are thousands who have no problems and thus no need to complain or even read the threads.

All brands of EC probes have issues in a very dirty environment such as a marine tank.

There are many methods that can be used to give the probe an easier time, however most folks simply settle on using a mounting method that does not capture bubbles but has sufficient flow to help avoid the buildup of organics.

I agree that all the probes seem to be prone to the same issues. My issue is more with the huge price difference that Neptune charges for the probe that is not better (nor worse) than the others.

 

[Rimsky]

I just found them on Aliexpress, can you tell me if this is the right one

I can't tell. If it says 10X it should be, but I can't confirm 100%. I can just confirm that the one that I bought and shared the information here (Pasco 10X) works for me. Keep in mind that you will also have to make the adapter.

 

[A3LXK]

I can't tell. If it says 10X it should be, but I can't confirm 100%. I can just confirm that the one that I bought and shared the information here (Pasco 10X) works for me. Keep in mind that you will also have to make the adapter.

I am aware that i need to make a adapter or solder the cable from the old probe to the new one. That is no problem, I can do both cause I have a electrical background.

The Pasco are no longer in production so that is no option unfortunatly.

 

[Rimsky]

I am aware that i need to make a adapter or solder the cable from the old probe to the new one. That is no problem, I can do both cause I have a electrical background.

The Pasco are no longer in production so that is no option unfortunatly.

I think there are high chances that the AliExpress one will work. If you try it, please let us know! Thanks.

 

[nunoml]

So the 10x is the way to go? I just found them on Aliexpress, can you tell me if this is the right one?

Hello
thank you all
Please can you provide the Aliexpress link ?
Thank you

 

[Troylee]

Mine works great! Haha! It was fine for a few months then bugged out! Back to my io plastic hydrometer..

 

[nunoml]

So the 10x is the way to go? I just found them on Aliexpress, can you tell me if this is the right one?

Its this one ?

https://www.aliexpress.us/item/2251832658856268.html?spm=a2g0o.productlist.main.3.205b1db28lpDmB&algo_pvid=12fe355e-632a-48dc-afe9-262e57ff7760&algo_exp_id=12fe355e-632a-48dc-afe9-262e57ff7760-1&pdp_npi=4%40dis%21EUR%2125.45%2125.45%21%21%2127.65%21%21%402101e9d417037959939897464e6fd8%2165101147429%21sea%21US%21782550764%21&curPageLogUid=GUx8t6PfXe03

 

[A3LXK]

Its this one ?

https://www.aliexpress.us/item/2251832658856268.html?spm=a2g0o.productlist.main.3.205b1db28lpDmB&algo_pvid=12fe355e-632a-48dc-afe9-262e57ff7760&algo_exp_id=12fe355e-632a-48dc-afe9-262e57ff7760-1&pdp_npi=4%40dis%21EUR%2125.45%2125.45%21%21%2127.65%21%21%402101e9d417037959939897464e6fd8%2165101147429%21sea%21US%21782550764%21&curPageLogUid=GUx8t6PfXe03

That's the one but be shure to choose the Cell Constant 10 and not the .1 or 1

 

[nunoml]

That's the one but be shure to choose the Cell Constant 10 and not the .1 or 1

Ok. Thank you

 

[A3LXK]

Or this one

https://a.aliexpress.com/_Euwgn9P