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Olddawgsrule View Drop Down
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Posts: 1014 		Direct Link To This Post Topic: My Mods on Lily
    Posted: 22 Apr 2018 at 9:22am
18hr test. Looks about right.
228ma average (240ma if you wish to use the 12v baseline, I used standing voltage at 12.7)
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Olddawgsrule View Drop Down
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Posts: 1014 		Direct Link To This Post Posted: 22 Apr 2018 at 7:50am
Originally posted by Tars Tarkas

The specs on the Amazon site plainly state that this is for AC only.  I agree, the title of the page is deceiving though.  In this case, apparently "DC" means "Digital Current", as in digital current reader, as opposed to an analog current reader, I suppose.  If you needed a reason to send it back that's good enough.  That's a dam stupid title.  Really stupid or intentionally deceptive.

I'm curious about the pics you posted though.  You have this thing sitting on your battery and it appears to be reading 12.something volts. 

TT

It's sitting in a test spot to see if it works. Final home will be inside Lily.

Top left is battery voltage as it sits.
Top right is amperage draw 'real time'.
Lower left is Wattage 'real time'.
Lower right is cumulative. Want to know what you sed in day/weekend/week?

Mounted on the battery to the right is the 'shunt' I refer to.

4 wires to the unit. 2 for battery voltage, 2 for amperage/wattage that run through the 'shunt'.
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Tars Tarkas View Drop Down
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Posts: 1446 		Direct Link To This Post Posted: 22 Apr 2018 at 7:31am
The specs on the Amazon site plainly state that this is for AC only.  I agree, the title of the page is deceiving though.  In this case, apparently "DC" means "Digital Current", as in digital current reader, as opposed to an analog current reader, I suppose.  If you needed a reason to send it back that's good enough.  That's a dam stupid title.  Really stupid or intentionally deceptive.

I'm curious about the pics you posted though.  You have this thing sitting on your battery and it appears to be reading 12.something volts. 

TT
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Olddawgsrule View Drop Down
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Posts: 1014 		Direct Link To This Post Posted: 22 Apr 2018 at 7:06am
Update on the 'coil' style unit. It came in 'marked' AC only. It will not even read DC voltage never mind Wattage.

It's going back. 
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Olddawgsrule View Drop Down
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Posts: 1014 		Direct Link To This Post Posted: 22 Apr 2018 at 7:03am
Originally posted by Olddawgsrule

Ended up hooking in the 'shunt' unit. This is test location, final resting spot should be inside Lily.

Ghost draw.




Please look at the wiring. I believe the smaller cable from the unit should be on the other side of the shunt. You folks are saying that's the charge line from the solar. I noticed it after I hooked it up. I have not yet hooked up 'shore power' in case I'm correct on this.

If I don't hear back (before I head out there), My plan is to swap it over to the battery terminal before I hook into 'shore power'.
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Olddawgsrule View Drop Down
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Posts: 1014 		Direct Link To This Post Posted: 22 Apr 2018 at 6:44am
Here's with Frig draw.
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Olddawgsrule View Drop Down
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Posts: 1014 		Direct Link To This Post Posted: 22 Apr 2018 at 6:41am
Ended up hooking in the 'shunt' unit. This is test location, final resting spot should be inside Lily.

Ghost draw.
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GlueGuy View Drop Down
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Posts: 2629 		Direct Link To This Post Posted: 20 Apr 2018 at 6:46pm
Originally posted by Olddawgsrule

Originally posted by GlueGuy

Even though that has "DC" in the description, based on the fact that it is using a coil to sens, I think that is an AC-only sensor.

If it's Iron core it should do DC. Question really is if it's true RMS (which I doubt for the dollar). Really doubt it's Hall.. Way to little money for that.

Now if it's ferrite core.. measurements should be pretty close even if non-RMS and adjusted.

All will be seen over the weekend and answered. No reason for any of you to spend the dollar till I know it works and how well.
The core doesn't matter. A coil (regardless of core material) can "sense" an expanding/collapsing magnetic field. A DC current won't be changing, so cannot be sensed with a coil. So this would tell you the current on an AC line, but not a DC line.

If you want to sense the current in a DC line, you need something like a hall effect sensor. This is what is used in AC/DC clamp-on meters.
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Olddawgsrule View Drop Down
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Posts: 1014 		Direct Link To This Post Posted: 20 Apr 2018 at 4:20pm
Originally posted by GlueGuy

Even though that has "DC" in the description, based on the fact that it is using a coil to sens, I think that is an AC-only sensor.

If it's Iron core it should do DC. Question really is if it's true RMS (which I doubt for the dollar). Really doubt it's Hall.. Way to little money for that.

Now if it's ferrite core.. measurements should be pretty close even if non-RMS and adjusted.

All will be seen over the weekend and answered. No reason for any of you to spend the dollar till I know it works and how well.
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Posts: 1014 		Direct Link To This Post Posted: 20 Apr 2018 at 2:40pm
Well, we're about to find out. Should be here today, but if not by the time I get back tomorrow.

I'm going to test it on my solar setup so I can compare readings against what I already have in place.
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