Fluke 87 V Continuity Beeper

[Richard W.]

Hello,

does anybody know the maximum resistance at wich the beeper of a Fluke 87V indicates continuity?
There is no specification in the manual.

Maybe someone could try it out with a potentiometer?

with best regards
Richard

[Kiriakos-GR]

Interesting question ..

I run this test on my 28II Fluke , identical to 87V ..

And the beeper beeps happily  from 0 - 112  113 Ohms ...  then stops. 

[saturation]

Great question, glad Kiriakos tested it empirically.  Its good to know.

[ziq8tsi]

There is no specification in the manual.

Interesting.  That information seems to have been missing for the series III too, but the original 80 series manual did give "typical" values.

The specifications for the Fluke 179 state that the beeper turns on at <25? and off at >250?.  The actual behaviour is on at <=43? and off at >=81?.

Amprobe 38XR-A manual says that the tone indicates <40?, which is exactly what you get.

[Time]

Those numbers are surprisingly high.  I would have guessed much lower.

[ModemHead]

Here's some data points from my box o'multimeters:

87V: on at <= 53, off at >= 91
87:  on at <= 73, off at >= 199
83:  on at <= 53, off at >= 160

[Kiriakos-GR]

Great question, glad Kiriakos tested it empirically.  Its good to know.

I did the test with my Decade resistors box..
And so my numbers are spot on  0.1%  

[Richard W.]

Thanks for all the interesting results. I am also surprised about the high values.
The beep-value on my gossen metrawatt is adjustable. (1;10;20;30;40 and 90 ohms).
10 ohms is the factory-preset value. I hoped that this setting could have been the reason of the slower responsing time. But obviously it doesn't matter at all.

[Kiriakos-GR]

For the only "adjustable" that I would fly my hat , would be the volume of the beeper.

slower responsing

Only Dave are good at playing music with the leads and the beeper ,
but he had practice allot ..  

[williefleete]

i made a continuity beeper using a few triple 5's not sure what resistance it will still beep at but less than 1k probably