How do you measure continuity


Postby freakazomb » Sun Jun 20, 2010 11:47 am

If im mentioning continuity across an component (fan, pump, thermistor, etc) , do i set the multimeter to Ohms or voltage and what readings should i expect to see if everything is ok
freakazomb
Rank: Labourer
Progress to next rank:
50%
Posts: 3
Joined: Sat Jun 19, 2010 6:40 pm

Sponsor

Simply Build It

Postby plumbbob » Mon Jun 21, 2010 8:18 pm

Continuity can be tested by measuring the resistance in ohms of a circuit or winding. The circuit must be isolated from the electrical source to prevent a false reading and irreparable damage to the meter.

The reading will vary enormously depending on what exactly is being measured, and the display will be different according to the type of meter being used (analogue or digital).

To identify how the meter will display the result, with the multimeter set to ohms, hold the leads apart and look at the display. It will probably show "1" (infinity resistance). That is how it will look if the winding in a motor is broken.

Now touch the leads together and the display will change to "0.00" (No resistance) probably. This indicates a dead short.
plumbbob
Rank: Project Manager
Posts: 1873
Joined: Wed May 07, 2008 9:59 pm

Postby freakazomb » Tue Jun 22, 2010 8:57 pm

thanks for your help plumbob
freakazomb
Rank: Labourer
Progress to next rank:
50%
Posts: 3
Joined: Sat Jun 19, 2010 6:40 pm

Postby hamish72 » Fri Jun 25, 2010 7:16 pm

For an acurate resistance reading you may have to zero the meter with the leads shorted together though most digi meters will auto zero
hamish72
Rank: Tradesman
Progress to next rank:
11.5%
Posts: 27
Joined: Sun May 25, 2008 5:11 pm

Display posts from previous
Sort by
Order by



  • DIY How to Project Guides

  • DIY how to tutorial projects and guides - Did you know we have a DIY Projects section? Well, if no, then we certainly do! Within this area of our site have literally hundreds of how-to guides and tutorials that cover a huge range of home improvement tasks. Each page also comes with pictures and a video to make completing those jobs even easier!



 


  • Related Topics