Accuracy of Neptune FS-100 flow sensor?

RicGio · 03/26/2018, 09:31 AM

I recently installed a Neptune Apex FMM with 1" flow sensor. I'm curious the units it reads out in (GPH? LPH?). My return pump is a panworld 100PXX running at about 12' of head with the discharge valve throttled to about 30% open. Design Max flow at 0' of head for the pump is 1200 GPH. The FMM is showing 750. There is NO WAY I'm flowing that much. Can anyone chime in on the accuracy of these things?

RussM · 03/27/2018, 09:30 AM

Do I smell a bubblehead?

(ex-STSCS(SS) here - Von Steuben (Gold crew), Batfish, Topeka)

Check the GPH/LPH setting for the FMM in the Classic Dashboard (Configuration->Module Setup). In the Apex Classic models, it defaults to LPH

RicGio · 03/28/2018, 09:54 AM

Quote:

Originally Posted by RussM

Do I smell a bubblehead?

(ex-STSCS(SS) here - Von Steuben (Gold crew), Batfish, Topeka)

Check the GPH/LPH setting for the FMM in the Classic Dashboard (Configuration->Module Setup). In the Apex Classic models, it defaults to LPH

Yup! ex- MM1 (SS) Narwhal SSN-671 '84-'88. Batfish was in my squadron in Charleston SC.

03/26/2018, 09:31 AM	#1
RicGio Registered Member Join Date: Oct 2002 Location: NJ Posts: 658	Accuracy of Neptune FS-100 flow sensor? I recently installed a Neptune Apex FMM with 1" flow sensor. I'm curious the units it reads out in (GPH? LPH?). My return pump is a panworld 100PXX running at about 12' of head with the discharge valve throttled to about 30% open. Design Max flow at 0' of head for the pump is 1200 GPH. The FMM is showing 750. There is NO WAY I'm flowing that much. Can anyone chime in on the accuracy of these things?

03/27/2018, 09:30 AM	#2
RussM Registered Member Join Date: Jan 2007 Location: El Cajon, CA Posts: 7,818	Do I smell a bubblehead? (ex-STSCS(SS) here - Von Steuben (Gold crew), Batfish, Topeka) Check the GPH/LPH setting for the FMM in the Classic Dashboard (Configuration->Module Setup). In the Apex Classic models, it defaults to LPH