2 ms·
I'm curious: Since the problem was clear to anybody in the field - temperature control, and there's a whole field dealing with control where PID is bread & butt
by petra 11y ago
I'm curious: Since the problem was clear to anybody in the field - temperature control, and there's a whole field dealing with control where PID is bread & butter,so it's quite simple to ask for a solution , why did it take something unique and tinkering to add PID to coffee machines ?
why didn't companies in the field just implement this as part of their product development(maybe aiming for the higher end) ?
- the-dude 11y agoI was told by a professional coffee technician manufacturers experimented with electronic temp sensors 15-20 years ago but they were prone to failure. Field service is expensive. This is for the professional machine ( 2 - 3 groups ). They have always used pressostats which are very reliable but they wear due to arcing. For the home market, lots of machines are not heat-exchangers and therefore need to run a lot cooler ( 100c instead of around 120c ). A pressostat does not work well in this range and they just mount cheap thermostats.
- abernson 11y agoThis is more or less what I've heard. Early espresso machine tech was based off mechanical relays, and they didn't play well with early electronic temp sensors. Also, temperature stability was not really a thing anyone was talking about to that degree, so it wasn't a priority for manufacturers until noise was raised.