I work in the electric power industry & we use Agastats all the time. Most of these applications are on 125VDC control circuits. They are built well & last.
I have recently had a SCADA/control job where I learned the hard way the difference between these 2 types of time delay off relays.
Interesting to hear other fields don't use the pnuematic type much. Nice to learn what is happening outside my field.
