High Voltage Probe Suggestion Needed

[TheRuler8510]

hey guys,

Does anybody have a suggestion on what kind of high voltage probe I need to get that will work with my Fluke 87-V to measure 5KV-10KV? 

I know nothing about these probes.  I assume they do voltage division of 10:1 or 100:1. Do I have that right?

I was hoping to get something on on eBay for $50-$60, if not, what do I need--or do I have the wrong idea entirely?

Thanks,

[HighVoltage]

For high voltage measurements with a multimeter, I have one of these older Fluke 80K-6 High Voltage probes for up to 6 kV
You find them for low cost on ebay:
http://www.ebay.com/itm/Fluke-80K-6-HV-High-Voltage-6000-Volt-Probe-Multi-meter-Accessory-Very-Nice-/121338306864

Agilent also has one in the accessory department
This one goes up to 20 kV
http://www.home.agilent.com/en/pd-1000003703%3Aepsg%3Apro-pn-34136A/high-voltage-probe?&cc=DE&lc=ger

Probe Characteristics:

    Multimeter impedance: 10 M?
    DC Accuracy, 2% from 1 kV to 20 kV, 3% to 40 kV
    AC Accuracy, 5% at 60 Hz; derates with frequency to -3 dB at 300 Hz
    Input resistance: 1000 M?
    Maximum voltage, 40 kVDC
    Length: cable is 1 meter
    Termination: shrouded banana plugs and ground clip

I have one of these Agilent probes as well, and it was new around Euro 150, if I remember right.

But it all depends on what kind of signals you want to measure.

[GreyWoolfe]

I have the Fluke 80K-6 and it works fine business.  I used it to check voltages on an analog scope with no issues.  I paid $65 for a Fluke 27FM multimeter, a set of probes and a hard case along with the HV probe.  It was military surplus and the probe looked like it hadn't been used.

[rolycat]

Since you stated that you need to measure voltages between 5 and 10 kV, an 80K-6 would not be adequate.

The Fluke 80K-15 or 80K-40 probes would do the job, and can be readily found on eBay:
This 80K-40 is currently on offer at $89.95.

[w2aew]

hey guys,

Does anybody have a suggestion on what kind of high voltage probe I need to get that will work with my Fluke 87-V to measure 5KV-10KV? 

I know nothing about these probes.  I assume they do voltage division of 10:1 or 100:1. Do I have that right?

I was hoping to get something on on eBay for $50-$60, if not, what do I need--or do I have the wrong idea entirely?

Thanks,

I did a video on this topic...  ...be careful that the input impedance of the meter will change depending on the voltage range!

[Flump]

Heres Mine!

[HighVoltage]

I did a video on this topic...  ...be careful that the input impedance of the meter will change depending on the voltage range!

w2aew,
What a nice Video you made, thanks for that.
I had no idea, that the RCA probe was available at so many different resistor values, always thought that they are all 990 MOhm.

[TheRuler8510]

Thanks guys, that clears it all up...and excellent video too!

Regards,
Tom

[David Hess]

I did a video on this topic...  ...be careful that the input impedance of the meter will change depending on the voltage range!

I learned this lesson with a Fluke 80K-6 which I picked up for measuring the cathode voltage on a Tektronix 7834 that I was refurbishing.  I wanted to check the calibration of the probe which was used but in excellent condition and the multimeter I was using but when I broke out my HP3478A, it read high on the lower voltage ranges (30mV, 300mV, 3V) while all of my other multimeters, I have quite a collection, were consistent.  I had already suspected this would happen and a quick calculation showed that the high reading was consistent with the others when the high input resistance was considered.  I ultimately satisfied myself that accuracy would be well within the specification for the probe although it would be nice to have a high voltage calibrated source for such checks.

This would be an even larger problem with cheap multimeters that do not have a calibrated 10 MOhm input resistance.

I still use the 7834.  It is faster than any DSO that I can afford.