Author Topic: Fluke 87 V Continuity Beeper  (Read 10442 times)

0 Members and 1 Guest are viewing this topic.

Offline Richard W.Topic starter

  • Regular Contributor
  • *
  • Posts: 149
  • Country: de
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

  • Super Contributor
  • ***
  • !
  • Posts: 3525
  • Country: gr
  • User is banned.
    • Honda AX-1 rebuild
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

  • Super Contributor
  • ***
  • Posts: 4787
  • Country: us
  • Doveryai, no proveryai
    • NIST
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

  • Regular Contributor
  • *
  • Posts: 80
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

  • Frequent Contributor
  • **
  • Posts: 725
  • Country: us
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

  • Frequent Contributor
  • **
  • Posts: 731
  • Country: us
  • No user-serviceable parts inside.
    • Mr. ModemHead
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

  • Super Contributor
  • ***
  • !
  • Posts: 3525
  • Country: gr
  • User is banned.
    • Honda AX-1 rebuild
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.Topic starter

  • Regular Contributor
  • *
  • Posts: 149
  • Country: de
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

  • Super Contributor
  • ***
  • !
  • Posts: 3525
  • Country: gr
  • User is banned.
    • Honda AX-1 rebuild
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

  • Regular Contributor
  • *
  • Posts: 109
  • Country: nz
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
 


Share me

Digg  Facebook  SlashDot  Delicious  Technorati  Twitter  Google  Yahoo
Smf