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Hey /g/ need some tool advice. I need a clamp meter that records

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Thread replies: 13
Thread images: 2

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Hey /g/ need some tool advice. I need a clamp meter that records the max inrush current on a motor. Cheap but accurate would be preferable. I had one of those el cheapo harbor freight clamps but it was horribly inaccurate. Somewhere in a quarter of an amp accuracy as in 12.3 actual and it reads somewhere around 12.1-12.5. IS this possible under 50 bucks? Recommendations?
>>
>>1206297
>clamp meter
>inrush current
check out mr moneybags! money to burn over here!
>50$
oh, never mind, just a retard.
>>
>>1206301
Eat a dick. I've seen some sub 50 dollar units with good reviews on amazon that have the feature, just looking for some input on anyone that had luck with them. You sound like a salty little bitch, anon. Eat something. Like a dick.
>>
>>1206319
>>1206301

please return to reddit, both of you
>>
>>1206319
ok then guy, enlighten me.
what do you need to measure the max inrush for?
>>
>>1206330
maybe hes hooking it up to an inverter and it'll handle regular load just fine, not the inrush

do you have a multimeter with max/min already? there are cheaper clamp attachments you can buy than a complete clamp meter.
>>
>>1206338
Bingo and yes I do have a multimeter and i have a clamp meter. I need the inrush so i can find the right appliances. Running a house on a 2000 watt inverter. A good one but lets say my refrigerator surges while its already at 1200 watts, i may trip it.
>>
>>1206403
Why do you need a clamp meter? If you have a multimeter that can read AC volts RMS and responds quickly, consider just buying a big resistor like http://www.mouser.com/ProductDetail/Johanson-Dielectrics/RWCSG4Q000R1FS/ mounting it to a decent heat sink, placing it in series with the equipment, measuring voltage across, and multiplying by 10.
>>
>>1206414
Because inrush current is literally a tenth of a second. Even though i could do that i still couldn't see fast enough to read it.
>>
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>>1206415

This is why god invented oscilloscopes. Buy one if you can afford it even if you think you will seldom use it.

Lots of crazy shit goes on when you flip a switch. Usually nothing bad happens.
>>
>>1206297
A meter, no. Not made for it.

But a CT at the right ratio and a scope will give you what you want for max cheapness.

You could cobble an old clamp meters instrument and put it on a scope but your mileage may vary.

I am curious why you give a fuck about the inrush. This is usually 9-12 times FLA who's characteristic will be depended upon the impedance of the system.

In other words what could you possibly find valuable from that shit?
>>
>>1206403
>>1206695

Answering my own question, I now ask OP if he knows what the instantaneous capability is of his inverter.
>>
>>1206297
Why are you so worried about the inrush? I'd be more interested to see what FLA will be over a period of time.
Thread posts: 13
Thread images: 2


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