Author Topic: Fluke 87 V Continuity Beeper  (Read 8275 times)

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Offline Richard W.

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Fluke 87 V Continuity Beeper
« on: January 08, 2011, 07:51:15 pm »
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
 

Offline Kiriakos-GR

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Re: Fluke 87 V Continuity Beeper
« Reply #1 on: January 08, 2011, 09:18:42 pm »
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. 
 

Offline saturation

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Re: Fluke 87 V Continuity Beeper
« Reply #2 on: January 08, 2011, 09:23:31 pm »
Great question, glad Kiriakos tested it empirically.  Its good to know.
Best Wishes,

 Saturation
 

Offline ziq8tsi

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Re: Fluke 87 V Continuity Beeper
« Reply #3 on: January 09, 2011, 05:07:48 am »
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.
 

Offline Time

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Re: Fluke 87 V Continuity Beeper
« Reply #4 on: January 09, 2011, 08:10:17 am »
Those numbers are surprisingly high.  I would have guessed much lower.
-Time
 

Offline ModemHead

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Re: Fluke 87 V Continuity Beeper
« Reply #5 on: January 09, 2011, 02:28:00 pm »
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
 

Offline Kiriakos-GR

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Re: Fluke 87 V Continuity Beeper
« Reply #6 on: January 10, 2011, 12:39:38 am »
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%   ;)
« Last Edit: January 10, 2011, 12:42:52 am by Kiriakos-GR »
 

Offline Richard W.

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Re: Fluke 87 V Continuity Beeper
« Reply #7 on: January 10, 2011, 10:14:27 pm »
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.
 

Offline Kiriakos-GR

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Re: Fluke 87 V Continuity Beeper
« Reply #8 on: January 11, 2011, 12:43:25 am »
For the only "adjustable" that I would fly my hat , would be the volume of the beeper.

Quote
slower responsing

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

Offline williefleete

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Re: Fluke 87 V Continuity Beeper
« Reply #9 on: January 11, 2011, 01:44:21 am »
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
 


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