- Salinity Module: PM2 - Neptune Systems
Why does BRS recommend this?
Having the ability to monitor the salinity of your reef tank is a very valuable piece of information. Usually if something is to go wrong with your tank, you will usually see a change in salinity from temp, to a top off unit being stuck on, if you have a Neptune Apex Controller we highly recommend investing in the PM2 module and salinity probe.
Add the Salinity Module: PM2 to your Apex Neptune System.
- Real-time monitoring of salinity in reef aquarium
- Module has extra Temp Probe port
- I/O Switch Inputs for ATO, feed buttons, leak alarms, etc.
- Probe Sold Separately.
- Monitor/Control Conductivity/Salinity and temperature
- 4 Measurement ranges (0-900 uS/cm, 0-9.0 mS/cm, 0-90.0 mS/cm, 0-50 ppt)
- 6 digital inputs for float switches, water on floor sensors, pressure sensors, etc
- Full datalogging support in Apex Base module
- Up to 240 AquaBus modules can be added to the Apex system
- Plug and Play - Automatically recognized when installed into the system
- 2 AquaBus connectors for flexible expansion via AquaBus
- Comes with 3′ AquaBus cable
- Galvanic Isolation for accurate and reliable probe readings
- Led Status Indicator
- Upgradeable firmware
- Compatible with all Apex systems
Still needs some work. By Douglas on 8/2/2017Douglas wouldn't recommend this product to a friendThis probe is pretty much awesome when it works, BUT some many other devices in my setup will interfere with the readings that if I ever move my wiring it usually throws my readings off and I have to calibrate or move the probe wiring somewhere else.
I can't really say that I trust this probe enough to ever actually believe the reading.
I just wish they could somehow shield the cable from interference.
Highly recommended if you're running an APEX! By FLSharkvictim on 7/24/2017FLSharkvictim would recommend this product to a friendI am not sure the two bad reviews about the PM2 module but it's my favorite. I have a second PH, and a salinity probe. In order for it to work the proper way, you have to calibrate it and clean the probes with two part every 3 months. If you don't well then it might leave a review like the two above. My Salinity monitor probe is dead on to what my refractometer reads. I am getting ready to buy a 2nd PM2 mod for my saltwater mixing station.
Probe Stopped Working By Jason on 1/16/2017Jason wouldn't recommend this product to a friendWhile expensive for the module and probe it is nice to have a read out of the saltwater status. Can setup an alert if the reading goes outside your defined range. Probe stopped working after about a year.
Not accurate By Robert on 4/22/2015Robert wouldn't recommend this product to a friendA waste of money. Is never accurate according to my refractometer. Don't waste your money.
Very easy to set up had it set up within 5 minutes By Dbrown3 on 3/15/2015Dbrown3 would recommend this product to a friendVery easy to set up had it set up within 5 minutes
Easy to Setup By Franklyn on 12/17/2014Franklyn would recommend this product to a friendIt was easy to setup. Had it up and running within minutes
Just Buy it By Vanore on 9/13/2013Vanore would recommend this product to a friendIf you are 2nd guessing the PM2, don't. Just buy it
The conductivity reading from this module is dead accurate, and has a very fast refresh interval. This is a must have for the "control freak" the conductivity data graphs alone will shock the non ATO system keepers. Which now happens to be next on my list.
It's Week 43 of 52 Weeks of Reefing, and this week ...
It's Week 45 of 52 Weeks of Reefing, and this week ...
This is the probe module for measuring salinity but make sure to also pick up the actual salinity probe as well!
I do not see in the photo the inputs to attach the float switches.
I am wanting to use it for both an ATO and salinity monitor.
There is not an option to plug in float switches directly to the PM2. If you are looking for float switches you will need the Apex Breakout Box. The breakout box can plug into the I/O port on the PM2 or the apex main module. Feel free to let us know if you have any further questions!
The modules for Apex will carry a 1 year warranty. I have included the warranty information on the Neptune site below. Feel free to let us know if you have any further questions!
If you wanted to monitor two salinity probes you would need a module for each probe (so 2 in this situation).
The salinity probe itself is sold separately.