tbd.pi
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Location: NJ,USA
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Pressure Gauge for pool

Tue Jul 07, 2015 5:04 pm

I'm trying to discover if it's possible to monitor my pool equipment remotely. I want to start with the pressure gauge that monitors the flow of water to/from the pool.

Currently, this looks something like this Pool Spa Filter Water Pressure Gauge on Amazon

I might be searching the wrong things, but basically I'm looking for a way to tell me if the pressure drops below or increases above a certain threshold. If there are off the shelf solutions, that's great, but I would like to use something I can hook into. I can find flow control valves, I can find other types of sensor but nothing to do specifically with the pool. If this isn't possible, I'm also looking for a lesson in why this is a bad idea, so anything is helpful.

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DougieLawson
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Re: Pressure Gauge for pool

Tue Jul 07, 2015 5:43 pm

You're going to have a desperate struggle interfacing an analog mechanical pressure gauge to a digital RPi.

You'll do much better with something like http://uk.farnell.com/ge-sensing-novase ... dp/1861975 and an ADC like an MCP3002.
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gordon77
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Re: Pressure Gauge for pool

Tue Jul 07, 2015 6:29 pm

You might be able to point the pi camera at it and use motion detection in areas.

tbd.pi
Posts: 34
Joined: Sat Aug 11, 2012 11:21 am
Location: NJ,USA
Contact: Website

Re: Pressure Gauge for pool

Wed Jul 08, 2015 2:32 am

Thanks for the replies. Just for the record, I wasn't considering trying to take the mechanical reading of the current gauge and converting that somehow. I figured I would need something else in there to be able to achieve my goal. Looks like the sensor you posted Dougie would do the trick. I think I'll have to spend some time getting more adventurous with electronics before I start splashing out $50 on a single component :)

As for using the camera, I'm not sure that would suit my needs in the same way. I would have to rig up more equipment than I was thinking about and the filter is quite exposed to the elements.

Thanks for the suggestions, I appreciate the feedback.

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