Hall Effect Current sensor for Solar panel and battery monitoring
Hall Effect Current sensor for Solar panel and battery monitoring
(OP)
Just ordered 5 of these with the intention of installing permanent current sensors in each of the important wires in my multiply parallel setup (3 strings of panels, 2 strings of lead acids, the diesel powered charger, and the inverter input) if I can sort the electronics out. At the moment I have a clamp on ammeter, and a single permanently installed current shunt which doesn't seem to measure quite what I'd expect.
http://www.allegromicro.com/~/Media/Files/Datashee...
http://www.allegromicro.com/~/Media/Files/Datashee...
Cheers
Greg Locock
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RE: Hall Effect Current sensor for Solar panel and battery monitoring
RE: Hall Effect Current sensor for Solar panel and battery monitoring
Cheers
Greg Locock
New here? Try reading these, they might help FAQ731-376: Eng-Tips.com Forum Policies http://eng-tips.com/market.cfm?
RE: Hall Effect Current sensor for Solar panel and battery monitoring
Clamp-ons for Hall Effect sensors are difficult to make reliable because the magnetic impedance of a ferrite loop with a swinging gate of any sort is _extremely_ sensitive to the dimensions of the air gaps, and especially to any changes in those air gaps after calibration.
Honeywell used to sell a little circuit board with a projecting ferrite ring that you put your own wire through, and three terminals for + - and analog output. Factory calibration roughly doubled the price, ISTR.
Mike Halloran
Pembroke Pines, FL, USA
RE: Hall Effect Current sensor for Solar panel and battery monitoring
TTFN

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RE: Hall Effect Current sensor for Solar panel and battery monitoring
Cheers
Greg Locock
New here? Try reading these, they might help FAQ731-376: Eng-Tips.com Forum Policies http://eng-tips.com/market.cfm?
RE: Hall Effect Current sensor for Solar panel and battery monitoring
LEM-HEME make a range which are a lot friendlier to interface to. Most clip over a conductor or allow it to be fed through a reasonable-sized aperture. The output is usually 0-10V or 4-20mA or similar, and most take a 24V supply. ebay is often a good place to go looking: use the search term 'lem transducer' without the quotation marks. Can't help with the $4 but they aren't crazy money: plenty around the £25 mark.
RE: Hall Effect Current sensor for Solar panel and battery monitoring
Cheers
Greg Locock
New here? Try reading these, they might help FAQ731-376: Eng-Tips.com Forum Policies http://eng-tips.com/market.cfm?