Conductivity Probe: Anyone know the Pinout or reason behind 4 pins on PM2 Cond port?

Quinnchero · 04/18/2018, 03:49 PM

Title pretty much sums up the question. Why are there 4 pins on this port? I assume it was for conductivity probes with built in temp compensation. And yet they don't sell that style probe as an option. I am trying to find an aftermarket cond probe that is more reliable than what Neptune sells. It is good...I want better. But 95% of all higher end probes require BNC connections. I have found adapters but all of them split the mini 4 DIN adapter into two BNC connections. I want to know essentially which one is correct to use and how to determine that without possibly damaging the PM2 module. So which two pins are the required connections for a cond probe. Unless the other two do something else entirely different that measure temp.
Is anyone using alternative Cond probes? For example from Atlas Scientific?

Thanks for the help!

Q

04/18/2018, 03:49 PM	#1
Quinnchero Registered Member Join Date: Nov 2016 Location: San Diego County Posts: 5	Conductivity Probe: Anyone know the Pinout or reason behind 4 pins on PM2 Cond port? Title pretty much sums up the question. Why are there 4 pins on this port? I assume it was for conductivity probes with built in temp compensation. And yet they don't sell that style probe as an option. I am trying to find an aftermarket cond probe that is more reliable than what Neptune sells. It is good...I want better. But 95% of all higher end probes require BNC connections. I have found adapters but all of them split the mini 4 DIN adapter into two BNC connections. I want to know essentially which one is correct to use and how to determine that without possibly damaging the PM2 module. So which two pins are the required connections for a cond probe. Unless the other two do something else entirely different that measure temp. Is anyone using alternative Cond probes? For example from Atlas Scientific? Thanks for the help! Q __________________ “I know the human being and fish can co-exist peacefully.” ― George W. Bush Current Tank Info: 40 Breeder w/ 20g sump. In building process after 28g cube had massive leak failure