I'm aware that some utility meters allow attachment of optical pulse sensors via a magnetic ring. I am working on obtaining a sample of a optical sensor with magnetic attachment: http://www.tespro.com.cn/en/TP-12.php.
Does anyone know the magnetic arrangement of the meter magnetic ring, i,e the location of the North and South magnetic poles?
I hope in the future we will be able to offer this sensor to fit the emonTx and emonPi
Re: Utility meter magnetic attachment?
Do you know how many meters have this attachment? I tried a neodium magnet on a coule of meters which I had access to, and neither seemed to offer it...
Re: Utility meter magnetic attachment?
No I'm not sure how many have it. I know some do, like this one: http://smarthomeenergy.co.uk/sites/smarthomeenergy.co.uk/files/images/smart-meter.preview.jpg
Maybe it's best just going with double sided sticky attachment. However magnet would be very nice if it avaialbe
Re: Utility meter magnetic attachment?
I thought about laser-cutting some double-sided stick (tape or foam pads) for this. Pads might be good for keeping stray light out too.
Re: Utility meter magnetic attachment?
Velcro maybe another option, it allows the sensor to be removable (like the magnet) and and could also cope with less than perfect surfaces while providing a fairly light tight fit (as per the double sided tape/pads)
Re: Utility meter magnetic attachment?
Looking good!
http://shop.openenergymonitor.com/optical-utility-meter-led-pulse-sensor/
Just an idle thought, but I wonder if black velcro would be even better at keeping stray light out?
Re: Utility meter magnetic attachment?
Very excited about this, blog post coming soon. It works great, plug and play with emonpi and emonTx. Velcro is back on actual unit
http://cdn2.bigcommerce.com/server4400/98a75/products/179/images/711/201...