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Author Topic: new meter  (Read 1113 times)
eabadger
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« on: September 02, 2016, 12:49:55 PM »

saw an add on ebay for a wireless dc meter, only 24 inc post from guess where?
arrived day before yesterday, fitted in a spare mo.
the current shunt is just ok, but clamps through the pcb.
for wireless do not assume wifi.
but issue is when connected i thought i had got shunt in wrong direction as when charge was applied the meter showed -v
so i reversed, the meter can been set with capacity in ah of batts, set mine at 1000amphr but then saw the figure was reducing even though charging, it would appear someone in china thought charge should be shown as a -v figure, i then see that little lower it says chg (in red) and shows dis (in green) not a massive issue but annoyed me, thought i would save others the bother.

i dont think i am going to keep it on the bank, but i have come up with an idea, it has a soft relay output, which can be set to trigger for overvolt over current ect, would make a great turbine divert unit if linked to a contactor.

steve


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« Last Edit: September 02, 2016, 01:10:36 PM by eabadger » Logged

1600w PV main array at 24v, excide 2v 1000a forklift cells now x 2, 320w PV secondary array at 12v. Enfield 1944 ex RAF 5.6kw diesel genset (now in pieces, big ends gone), Petter AC1 28v diesel charging set at 2.8kw.
1kw wind turbine.
26kw wood stove back boiler to underfloor heating and dhw
camillitech
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« Reply #1 on: September 02, 2016, 01:38:05 PM »

Any chance of a linky EB, re the - reading SMA do that too, also the drives on our 11,000,000 hybrid ferry read - when they are charging the .6mgWh battery bank  Huh
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http://lifeattheendoftheroad.wordpress.com/

'Off grid' since 1985,  Proven 2.5kW, Proven 6kW direct heating, SI6.OH, 800ah Rolls, 4.75kW PV ,4xTS45, Lister HR2 12kW, , Powerspout pelton, Stream Engine turgo, 60 x Navitron toobs and a 1500lt store. Outback VFX3048 and 950ah forklifts for backup,
eabadger
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« Reply #2 on: September 02, 2016, 01:47:38 PM »

how odd, must be me?!
the reading in amps next to chg/dis goes up and down, so test was how many amps used last night, answer is 125a, but watt meter only goes forward?!?! sort of see reason.

http://www.ebay.co.uk/itm/131885458814?_trksid=p2060353.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT

how do they make and post for less than 24??
instructions are, well basic, part in Chinese.
the wireless does work but limited range, but all addressable so you could have one meter and multiple "smart" shunts.


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1600w PV main array at 24v, excide 2v 1000a forklift cells now x 2, 320w PV secondary array at 12v. Enfield 1944 ex RAF 5.6kw diesel genset (now in pieces, big ends gone), Petter AC1 28v diesel charging set at 2.8kw.
1kw wind turbine.
26kw wood stove back boiler to underfloor heating and dhw
paul149
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« Reply #3 on: September 02, 2016, 02:20:50 PM »

Regarding the cost of the thing iirc the cost of postage for Chinese companies sending stuff out of the country is Subsidised/ paid for by the gov to boost exports!

Paul m
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3.5 kWp (14 x Sanyo H250E01 + SB3000TL) 225' (SW) at 35' Pitch Lat 51.30' (Bristol) Installed cost 2.63/Wp (Nov 2011) now with solarimmersion and 250L unvented dhw (Almost Zero gas input for DHW from Apr to mid Sep)
eabadger
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« Reply #4 on: September 25, 2016, 09:28:03 AM »

its actually working very well, i am going to order up a few more help me keep track of wind turbine input and i am going to make it in to a test turbine controller, with one contactor it should be a useful unit, with logging.
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1600w PV main array at 24v, excide 2v 1000a forklift cells now x 2, 320w PV secondary array at 12v. Enfield 1944 ex RAF 5.6kw diesel genset (now in pieces, big ends gone), Petter AC1 28v diesel charging set at 2.8kw.
1kw wind turbine.
26kw wood stove back boiler to underfloor heating and dhw
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