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Old 12-10-2012, 11:39 PM
bcg bcg is offline
LawnSite Bronze Member
Join Date: Mar 2005
Location: Tx
Posts: 1,819
Originally Posted by 1idejim
No, i am not saying that. Your reading might be right on for the wire/voltage drop/resistance/temp/inrush holding requirements of the system. You use RB valves and 16/18 ga wire?
I'm almost entirely maintenance and repair, installed 5 systems in the last 3 years, so it's whatever is there. Typically it's either RB DV100 or Hunter SRV valves and 18 ga wire.

Originally Posted by 1idejim View Post
As the heat goes up, the resistance goes down.
Right, got that.

Originally Posted by 1idejim
5-6 volt amps, depends on the solenoid specs.

I have a pro-93 LCM and it reads good, i have an excel clamp that i have to wrap the wires. Before i blew my FLUKE 5/600 to the next world i had to wrap the forks to get an accurate measurement.

I never had any luck with a standard meter connected in series.

Hope that the above didn't confuse the question
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No, that helps. So my Fluke is reading correctly.

BTW, I prefer the Greenlee DM20 but killed my last 2. I've got a couple on order with my distributor but for some reason they aren't here yet. The Flukes are great but I do have a few issues with them for the kind of use I have.

1 - They don't like to measure resistance when there's current on the wire (i.e. POOF). The Greenlee will just beep at you and you can carry on with your day.

2 - They really aren't rugged enough for this kind of work. As much as they cost, I feel terrible getting them muddy and know they can't handle being wet.

3 - I prefer a manual ranging resistance setting. I can get it with the Fluke but there are too many steps involved. On the Greenlee, I set it to 200 Ohms and get on with it.

I don't really care for the little lead clamps, sure its a hassle sometimes but I prefer to just touch the leads to what I'm testing.
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