Parasitic draw testing and mV scale on Verus D10
4 months 4 days ago - 4 months 4 days ago #67242
by tomscott
Parasitic draw testing and mV scale on Verus D10 was created by tomscott
Hey everyone, I've using my new to me Verus D10 for parasitic draw testing for the first time. I am still waiting for the amp clamp I ordered to arrive, so I'm using my Snap On DMM for measuring the current draw and trying to use the Verus as a DMM on the mV scale. The issue I seem to be having is it reads either - 1.1mV or - 0.6mV across the fuses and even if I hold the leads together. I'm using the yellow test lead with the shield plugged into the ground on the scope.
Not sure what is happening or if there is a way to 'zero' it? With the leads not connected the reading fluctuates a lot, as expected, then once they are connected across the fues it steadys but always to - 1.1 or - 0.6. Is this meter not that accurate down to the mV scale or am I doing something wrong?
I'll try and post a photo but I'm on my phone so it might not work 🤷♂️
https://photos.app.goo.gl/mrBhPopzbtZgbaK39
Not sure what is happening or if there is a way to 'zero' it? With the leads not connected the reading fluctuates a lot, as expected, then once they are connected across the fues it steadys but always to - 1.1 or - 0.6. Is this meter not that accurate down to the mV scale or am I doing something wrong?
I'll try and post a photo but I'm on my phone so it might not work 🤷♂️
https://photos.app.goo.gl/mrBhPopzbtZgbaK39
Last edit: 4 months 4 days ago by tomscott.
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3 weeks 2 days ago #80523
by wrayjr1
Replied by wrayjr1 on topic Parasitic draw testing and mV scale on Verus D10
I had a Triton D-10 that was doing the same thing.
I had it plugged into an electrical outlet because the battery would die before the test was completed.
I contacted Snap-On and explained the situation to them.
They stated that this was normal due to it back feeding the electrical current from the outlet.
I told them, if that was the case you wouldn't be able to perform an accurate parasitic draw test.
They said to leave it plugged in until I was ready to perform the actual test and then unplug it.
I said if it is already connected to your test items how are you supposed to zero it once its unplugged.
That was the end of the conversation. I'm not sure if they are going to repair it or not.
I got rid of the D-10 and am now in the market for something different.
I had it plugged into an electrical outlet because the battery would die before the test was completed.
I contacted Snap-On and explained the situation to them.
They stated that this was normal due to it back feeding the electrical current from the outlet.
I told them, if that was the case you wouldn't be able to perform an accurate parasitic draw test.
They said to leave it plugged in until I was ready to perform the actual test and then unplug it.
I said if it is already connected to your test items how are you supposed to zero it once its unplugged.
That was the end of the conversation. I'm not sure if they are going to repair it or not.
I got rid of the D-10 and am now in the market for something different.
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3 weeks 1 day ago #80557
by tomscott
Replied by tomscott on topic Parasitic draw testing and mV scale on Verus D10
Thanks for this, that's really useful information! Next time I have it out I'll try it with the mains disconnected, luckily my battery is pretty good so I should be OK for a bit!
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