1/2" Flow Sensor FS50 - Neptune Systems

1/2" Flow Sensor FS50 - Neptune Systems
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  • 1/2" Flow Sensor FS50 - Neptune Systems
  • 1/2" Flow Sensor FS50 - Neptune Systems

1/2" Flow Sensor FS50 - Neptune Systems

SKU: 210687
In Stock: 48
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Quick Overview

Know Your Flow!

1/2" Flow Sensor for the Fluid Metering Module from Neptune. 

The FS-50 will work with flow rates from 30-250 gph, and will connect to any standard 1/2" Slip PVC.


Full Details

Usually used with a return pump, this flow sensor can be placed in line with the flow on any pipe, connected to the FMM, and communicate to your Apex the flow rate of water through that pipe. The flow sensor itself uses British Standard Parallel Pipe (BSPP) threads so all BRS customers we have included two specially designed PVC unions with slip fittings to adapt it to standard 1/2″ PVC plumbing.


What's Included?

1x 1/2" Flow Sensor

2x SBPP x 1/2" Slip Unions




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Product Questions

How do I hook this up to the BRS media reactors which come with 1/2" tubing? Is there a push-connect fitting that can connect 1/2" tubing to this flow meter?
Question by: Steve on Apr 25, 2017 12:25:00 AM
Hey there,
The connections on the flow meter are female slip, so in order to connect to the RO tubing of the reactor, the most likely solution would be to glue a short section of 1/2" pvc into the coupling, and then attach a female slip x thread coupling, and you could then insert an npt x push connect fitting into this. I've included links below to these two fittings.


Happy reefing!
Answer by: Zack (Admin) on Apr 28, 2017 9:41:00 AM
I'd like to attach one of these to the return hose of my all in one tank (Red Sea Max Nano). I contacted Red Sea, who said that the internal bore should be 19mm. How do I add a flow sensor onto that return tube?

Question by: Alex on Oct 10, 2017 1:26:00 PM
Hey there,
Thanks for getting in touch with us in regards to this set-up you are planning. In order to get that set-up you will need to use a metric to standard fitting. I have included a link here below to an item that you can use to get this taken care of. Please let me know if there is anything else that we can assist with. Thanks!

Answer by: Tyler Schafer (Admin) on Oct 15, 2017 11:22:00 AM
How long is the cord on this sensor?
Question by: Jeremy Braband on May 2, 2017 1:25:00 PM
Hey there,
The flow sensors have a 16 foot cord length, so you should be in good shape in a variety of plumbing setups!

Happy reefing!
Answer by: Zack (Admin) on May 8, 2017 10:22:00 AM