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Relative Temp Accuracies

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mstern

Junior Member

Beiträge: 17

Relative Temp Accuracies

Montag, 19. Oktober 2020, 18:21

Hi,

Which is likely to be more accurate -- the internal temperature reported by my D5 Next pump, or the internal temperature reported by my MPS flow sensor? The MPS sensor is just mounted next in line out of the pump (i.e. no cooling or heating components are between them) and the pump is reporting internal water temperature as 27C and the MPS is reporting 30C. They should be nearly the same (if anything, you'd think the MPS one might be slightly lower) -- I am not so concerned that they are different, but just want to use whichever one is likely to be more accurate.

Thanks.
Marc

sebastian

Administrator

Beiträge: 10 517

Montag, 19. Oktober 2020, 20:22

The d5 next is more accurate and has a higher resolution.

mstern

Junior Member

Beiträge: 17

Montag, 19. Oktober 2020, 20:59

Zitat von »sebastian«

The d5 next is more accurate and has a higher resolution.
Perfect -- thank you very much!

k2viper

Full Member

Beiträge: 154

Dienstag, 20. Oktober 2020, 18:29

I have a pre-calibrated inline Phobya sensor set just on "IN" of an D5 NEXT's pump.
What can I say about D5 NEXT's temp sensor accuracy, it's usually showing about 0,3C lower temp then pre-calibrated inline sesor, but the thing is that its sensor measurement is affected by pump speed.
In my case, pump mostly runs around 3040rpm (36%) and when I ramp up the pump's speed, internal D5 NEXT's sensor values slowly go down for like an additional 0,25-0,30C. I also have second pump in a loop and ramping second pump's up is not affecting temps reported by D5 NEXT. So it in not relevant to flow, but to pump's speed itself.

TLDR: D5NEXT's sensor is accurate enough to casual cases, but not accurate enough to use it with aquaero's Power consumption virtual sensors or measuring a water-water Delta T.
Though, MPS internal temp sensor is not accurate at all and cannot be recommended even for casual cases usage.

Dieser Beitrag wurde bereits 1 mal editiert, zuletzt von »k2viper« (20. Oktober 2020, 18:30)

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