Irrigation circuitry

Discussion in 'Irrigation' started by 1idejim, Jun 26, 2011.

  1. Wet_Boots

    Wet_Boots LawnSite Fanatic
    Posts: 46,936

    I've upsized a notch or two on an old Hunter SRC, but only up to 1-1/4 amps from the original 3/4 amp normal-blow fuse (the triacs in the SRC are rated for 4 amps)

    So, what clamparound meters are popular for 2-wire use? It looks like one with a bottom range less than 10 amps, having a 4-digit display, will read out to 0.001 amps. Is that good enough?
     
  2. This reminded me of a trick i learned. If you have a situation where you need to blow a bunch of fuses troubleshooting assuming you can get your hands on an old richdel r4-12 then remove the reset fuse it has, add a little wire and alligator clips, remove the fuse and alligator clip across the fuse holders with the reset fuse.
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  3. 1idejim

    1idejim LawnSite Fanatic
    Posts: 9,082

    depending on the model boots, you get a readout of numbers or led/digital strength. the RD, vivamax, metrotech and others have current direction capabilities. basically the path is located by the strongest signal, helps in congested areas.
     
  4. Wet_Boots

    Wet_Boots LawnSite Fanatic
    Posts: 46,936

    I'm still not seeing why I am concerned with the value of any current when I am tracking a wire.
     
  5. Sprinkus

    Sprinkus LawnSite Silver Member
    Posts: 2,077

    This clamp meter is designed to use on two-wire systems and is actually pretty inexpensive as far as high resolution clamp meters go.
     
  6. Wet_Boots

    Wet_Boots LawnSite Fanatic
    Posts: 46,936

    I see there is a family of clamparound meters called "leakage meters" with micro-amp capabilities, but they live in a pricey neighborhood.
     
  7. Sprinkus

    Sprinkus LawnSite Silver Member
    Posts: 2,077

    Pro 92 is around 200 bucks.
     
  8. Wet_Boots

    Wet_Boots LawnSite Fanatic
    Posts: 46,936

    the "big boys" like Fluke seem to think $500 is too low for a "leakage meter" ~ I see on ebay, there are cheesy-looking imports, and a few more-intriguing discontinued brand-name clamparounds.

    Just how low are two-wire current readings going to be? Anything below the milliamp range?
     
  9. Sprinkus

    Sprinkus LawnSite Silver Member
    Posts: 2,077

    Nominal standby current on a Tucor LD-050 single station decoder is 0.5 mA.
     
  10. Wet_Boots

    Wet_Boots LawnSite Fanatic
    Posts: 46,936

    Okay, that puts you in Leakage Meter territory, no doubt.
     

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