Sand Filter Pressure and Pump Basket Flow

[dammert89]

Hi Everyone.

I have been doing some research on my pressure of my filter as well as the flow rate.

My plan is to find a way to monitor the following 3 things

1. Pressure of the filter (at the MPV)
2. "Fullness/Dirtiness" of the Weir basket
3. "Fullness/Dirtiness" of the pump internal basket

What I have read is that a clogged weir basket/ pump internal basket will reduce flow and reduce pressure at the MPV too. A dirty filter will increase pressure of the filter but does it have any effect on the flow?

I am building a bit of an IOT system so I have a pressure sensor on my MPV and it alerts me when the filter is 8 PSI above the normal that I set i.e. it will trigger at 28PSI if I have the base set at 20PSI

Could I use a flow meter before(or after?) the pump to see if any of the weir's are clogged? or maybe even pressure sensors instead of flow meters?

Would a clogged weir not then effectively cancel out the pressure increase of a dirty filter?

Thanks

 

[Bperry]

Hi Everyone.

I have been doing some research on my pressure of my filter as well as the flow rate.

My plan is to find a way to monitor the following 3 things

1. Pressure of the filter (at the MPV)
2. "Fullness/Dirtiness" of the Weir basket
3. "Fullness/Dirtiness" of the pump internal basket

What I have read is that a clogged weir basket/ pump internal basket will reduce flow and reduce pressure at the MPV too. A dirty filter will increase pressure of the filter but does it have any effect on the flow?

I am building a bit of an IOT system so I have a pressure sensor on my MPV and it alerts me when the filter is 8 PSI above the normal that I set i.e. it will trigger at 28PSI if I have the base set at 20PSI

Could I use a flow meter before(or after?) the pump to see if any of the weir's are clogged? or maybe even pressure sensors instead of flow meters?

Would a clogged weir not then effectively cancel out the pressure increase of a dirty filter?

Thanks

A clogged weir may cause the pump to lose its prime which will run your pump dry so there will be very low pressure or none at all.

 

[dammert89]

A clogged weir may cause the pump to lose its prime which will run your pump dry so there will be very low pressure or none at all.

Thanks.

When I say clogged I mean that the pump is still primed and there would still be flow. (Just not as much)

 

[Bperry]

Thanks.

When I say clogged I mean that the pump is still primed and there would still be flow. (Just not as much)

Understood. A weir door stuck closed (or too many leaves in the basket) can also block enough water to cause the pump to lose prime and not be able to pump any water, then shut itself off due to overheating.

 

[wireform]

I'm not sure about the following but maybe amperage on the pump may be a sign of not enough water in the skimmer/ no prime or more amperage then the norm when the pressure at the filter rises. There may not be big differences but if you learn what they are it may work.

 

[dammert89]

I'm not sure about the following but maybe amperage on the pump may be a sign of not enough water in the skimmer/ no prime or more amperage then the norm when the pressure at the filter rises. There may not be big differences but if you learn what they are it may work.

Great

It is a 1 speed pump. I will look in to this as it could be a possible workaround and I already measure the amperage of the pump. I'm going to run a couple of tests to see what the effect of full a full weir vs empty weir does on the amps.