A friend gave me an old amprobe AM-1A analog multimeter. It has a temperature function which is shared with one of the DC MA ranges. It plugs in with what looks like a normal size earphone jack. I have not seen any probes like that. I thought i'd make my own with an old thermister and an old earphone cord and solder it up. I tried a temp setup, which did nothing.

Based on it shares a MA range i'm wondering if maybe those probes are thermocouple based rather than using thermistors. Any ideas? I have an IR thermometer already, but think this could be better in some cases.

 

Perhaps Amprobe could tell you something.

 

Could possibly use a Type K thermocouple?

 

I do see the AM-1A on Ebay not sure what they come with.

 

I think I found your probe on Ebay. http://www.ebay.com/itm/AMPROBE-RBT...823?pt=LH_DefaultDomain_0&hash=item486791021f
If the link is broken or not permitted Go to EBay and search "AMPROBE RBT-12P TEMPERATURE PROBE"

 

Could possibly use a Type K thermocouple?

Why the milliamp scale? I would think it would display on the milli-volt scale, since they put out voltage based on junction temperature?

 

I looked around on google and amprobe for any info on this. I find some selling them, or using them, but no manuals or anything. Seems maybe it was discontinued by amprobe.

I searched that probe model, plug looks right so would probably work. I'm not sure if because it fits it is the intended one though. because I always thought these were model specific things due to range, calibration, etc. I've not dealt with this before so very possible i'm wrong there.

 

Ok my mistake it's not MA its MV. shares the 60MV range.