How Countiniuty check by ohmeter?

Answer 1

Continuity means a direct connection or low Ohms or zero Ohms. A wire and switch will read from 0 to 0.1 Ohms on a perfect meter. A light bulb might read 1 to 10 Ohms, as example.

First, to see if the meter is working properly:

To check how the meter reads continuity and see how to interpret, touch the probes together and note the reading. This is the reading you should see when testing the circuit if you have good continuity.

Safety!:

Never test continuity or ohms on a circut that has power energized. The meter can be destroyed internally, or even explode if Ohms function is used on high voltages.

Now, a couple ways to check:

1.) DIGITAL METER: Put the ohm meter on the lowest Ohms scale, usually will be "200". If the meter does not have several separate Ohms switch positions, it might be an "auto-range" kind. In that case, just set it to Ohms.

2.) ANALOG METER: Put the ohm meter on the lowest Ohms scale, usually will be "RX1". Some inexpensive analog meters have only one range, so just select the Ohms function, or plug the probe into the Ohms jack.

Put the probes to what you want to measure. the reading should be zero if measuring continuity. In some cases, the digital meter may indicate between 00.0 and 00.6 Ohms, this is normal because even the wires and probes have some resistance. The lower, the better.

Note that very inexpensive analog meters cannot read Ohms this low accurately, but you can tell if the continuity is good or not, because it will read "0" or very close to that.