BNC Connector with Nitrate Ion Selective Electrode (Arduino UNO)

Edit: I just noticed the Sensors specific category and asked about this there as well, but any help here with BNC connection suggestions would still be great!

Hello, I'm looking to be able to interface a Nitrate sensor with an Arduino UNO, but have not had luck yet, thus any suggestions would be appreciated!

Here's the link to the specific Nitrate ISE kit I have: https://www.ysi.com/Product/id-400421/TruLine-Nitrate-Electrode-Kit

So far, I have not found anyone online who has tried using this sensor with any type of Arduino, but I did find a sensor offered by Vernier that seems very similar, as seen here: https://www.vernier.com/products/sensors/ion-selective-electrodes/no3-bta/

On the Vernier GitHub page there's a Sketch that they suggest for use with their Ion Selective Electrode sensor connected to the A0 pin of the Arduino, and I am curious as to whether anyone knows if this sketch (GitHub link below) would work with the TruLine Nitrate ISE. If this Sketch would work, does anyone have a suggestion for a specific BNC connector to make work with the Arduino UNO?

https://github.com/VernierSoftwareTechnology/arduino/blob/master/VernierBNC/VernierBNC.ino

Thanks so much, let me know if there's anything that I need to clarify!

Any BNC connector should do the job, just make sure you order the correct gender. BNC connectors are a bit odd in so much as the connector that looks like the male one is actually the female one and vice versa. The male and female designation applies to the inner connector, not the outer locking connector.

Confused? :-)

This is a panel mount female connector |500x486

If you're just testing or getting started your best bet is to search your preferred supplier (RS, Farnell, Digikey, etc.) for a panel mount connector of the appropriate gender. These are usually easiest to solder wires to.

I had a quick look at the documentation for the probe but didn't spot any details of what the connections should be but, at a guess I'd say you want to connect the inner/core connector to your pin A0 and the outer connector to GND. If that's wrong it could damage your probe but I wouldn't think that very likely.

It might be worth checking with whoever wrote that sketch to be sure to be sure.

Hope this helps.

If the output is negative you'll have to connect shield to Vcc and A0 to the electrode. Use a 10k series resistor to prevent any possible damage perhaps.

If the solution being measured isn't isolated from Arduino ground you may have issues - you can try a differential measurement (shield to A0, inner to A1).

Probably best to have fully isolated systems (ie ensure solution is isolated from any conductor other than the probe).

Hi guys!

I am currently workin on a project, where I constantly have to measure nitrate concentrations. Therefore I have the following sensor: https://de.hach.com/sension-nitrat-ise-elektrode-1-m-kabel-bnc-anschluss/product?id=23358416161&callback=qs1

I now want to connect it to my Arduino. The thing is that's not really going great. I found this: https://www.vernier.com/til/3635/1

So it should be possible, but as I am a beginner when it comes to Arduinos and stuff, I am asking you guys for help. How do I hook it up to my Arduino? Do I need a BNC shield? If yes why? Can I also use a ph shield, as you can already buy them preassembled? I have a BNC connector btw. I really appreciate your help! Thanks