I am looking for an environmental test chamber to expand the tests capabilities of my shop.
Very often I am asked to measure circuit behavior at low/high temperature and I would like to offer something more professional than air hot gun/freezing spray…
Here the some requirements/nice to have I am after:
Temperature range -20C to 105C (minimum)
Not to big (25 liters should be enough)
Dedicated aperture for DUT cables connection.
Controlled humidity is a nice to have.
I have seen there are plenty of options on Alibaba.
In case someone has tried some of them, having a brief review will be really appreciated.
Thank you all!
I looked at various overseas ones, but found a reasonable deal on a local (== within Canada, as shipping is much easier then) used one.
FWIW there isn’t as much going on with them as I expected, the electronics part is mostly off-the-shelf. The refrigeration part can be serviced by most local type of shops as it’s similar to any dual-stage unit like medical supply might be using. Basically if the compressor and other key parts are good I doubt you’d have trouble keeping it running. Here are some shots of what’s inside of one in case it’s useful as a bit of a reference for what you’re paying for.
I’d be pretty comfortable with both a used one & the alibaba ones, having seen what’s inside them. For me the freight costs made a significant difference, as did finding one the right size & circuit requirements (this one is powered with 120V/20A so makes it easy for me). Concern around the observation window material & what refrigerant are in use made me a little more unsure about the overseas ones.
I just listen to the Vapor Phase Amp Hour episode. This is totally the acquisition to justify upgrading both soldering and temperature testing capability!
Old thread, but I just bought a Yamato DKN-402C “laboratory oven” with cable port - no compressor, only heating. It goes up to 250°C, 90 L internal volume, forced convection, has a window and can do programmed profiles. I wanted it for ALT, and can’t justify a [new] thermal chamber with cooling.
So, it turns out I can’t import Yamato ovens into Canada because they can’t be CSA certified. I ended up pulling the trigger on a TPS Tenney Jr Compact environmental chamber (might even be the same one that @coflynn has): Tenney Junior Compact Temperature Test Chamber | Tenney
It comes in “bench” and “cabinet” configurations. I got the cabinet, since the cost was the same. I shaved off some cash by not getting a front window.
I was hoping to get a Thermotron, but the cost was a little higher and the LT was 15 weeks minimum, which wouldn’t work for the client work I have coming up. Here’s hoping the Tenney delivers in the expected 5 weeks!
Quelqu’un a t’il déjà travaillé sur ce modèle de chambre test?
C’est un dispositif acquis bientôt 06 ans sans maintenance réelle et une utilisation limitée.
Le dispositif s’allume correctement mais les capteurs d’humidité et de température sont en perte d’efficacité. Le programme initial a été touché et il va falloir reconfigurer.
Votre aide me serait d’une grande importance.
Que faire dans ce cas pour redémarrer efficacement le dispositif?
