My Extech DMM is showing it's age, I've been happy with it for about 15 years now, so it was time to buy a new dmm, so I just purchased a DM284. I already have a FLIR E-40 so didn't really need another thermo camera, but I don't want to lug my E-40 (now e-60, thanks all) all over the place. The DMM does not come with a carry case, it should, for what one pays. I found a Go-Pro case in a Target for less than $20 that suited my needs.
The list price for the instrument is $749.00 US. If you search, you might find somebody who will cut the price by 10%. I was about to place the order and I found a site called Bukoos.com. They sell what they call "reclaimed goods." They claim that they are selling units brand new, unused, but in "B-grade" boxes. That means the boxes may show some wear or damage. My display box looked brand new and I didn't see where it was shopworn at all. I paid $600.00 plus shipping. When I bought the unit, I believe they had a few in stock.
So far I'm using it in AAA alkaline cells, but only after using it for a few days, I'm down to 50%. I would like to buy the L-I battery pack, but it seems to be going for about $79.95 everywhere. I'd be surprised that FLIR had it specially made, so with enough searching, might find one made for some other instrument or device. I haven't tried any other types of cells yet. Also, to change the batteries, you have to open the rear panel with a Philips screwdriver, kind of a pain, you would think the back would just snap on. If anybody has some ideas on batteries, I'm listening.
So far all I've used it for is repairing an air conditioner. I checked for voltage, 214 VAC, but had a bad blower. I measured the capacitor value, an AC capacitor labeled 20uf, measured 18uf. I replaced the motor, then used the thermo camera and thermocouple modes to verify operation. I used the included type K thermocouple to measure the discharge temperature (62F) and return temperature (84F). I went back with the thermo camera and double checked the readings. I was interested in air temperatures, but noticed the temperature of the register itself varied all over, probably some eddie currents in the air pattern.
I was working on a repeater vault on top of a mountain, where we lost air conditioning, we were on a backup window air conditioner. Now we are back to a real system. Our immediate task, restore a D-Star repeater.
If anybody has questions about the meter, please ask and I'll try to find answers, as I've only used it a little bit so far.
I don't check this forum often, and don't know if it notifies me of responses, if not, emptech at surewest.net
Jim