Multimeter Junkie Reviews the Micronta 22-191 and Viz WD-747

[bongpay]

Mark, I have the Micronta 22-191 I purchased back in the 80's which I use to check simple voltage for the house, batteries and the car. Now I need to check a thermocouple which has a rating of 30 millivolt. Can you kindly tell how to set my Micronta 22-191 so I can for 30 millivolt. Thanks

[mdzacharias]

@bongpay You know, I've never worked with thermocouples. Sounds like you would just put the 22-191 on the 200 millivolt range, and measure across the thermocouple. If there is a voltage source and the thermocouple is open, you'd need a higher voltage range, I suppose.

[warriorfire8103]

at 2:00 what would happen if you had the red line plugged into the connection on the left, "A"

[mdzacharias]

@warriorfire8103 It would blow the 1 amp circuit breaker on my little power supply. In another situation, could blow a fuse in the meter or damage the meter. In an industrial setting, the meter could even explode, although unlikely with a Fluke. One must be extremely careful using the AMPS or MILLIAMPS function of a multimeter. The meter needs to be in series with the load, not across it. Always return the test leads to the voltage position after using the amps function.

[mdzacharias]

Yeah, a small adjustment screwdriver.

[technicalsm]

I have an old Micronta 22-185 I got back in the mid 1980's.

How did you calibrate the potentiometers? With a small flathead?

[mdzacharias]

Sorry again about the audio sync problem. It's not present when uploaded.