Alexander Dan
The 3 controllers PID and digital timer
These controllers are what I added to the stock machine. On the left you can see two identical PID temperature controllers. What these do is control the heater by determining when to activate the solid state relay that is connected to the PID. When the PID requires the heater to be turned on it energizes the solid state relay (a switch controlled by another protocol...in this case the PID) and it completes the ac circuit to the heaters. These PIDs are accurate to the nearest 1 degree Fahrenheit which is an extreme improvement compared to the stock thermostat. Since this is a dual boiler espresso machine Idecided to use one PID for the brew boiler and the other PID for the steam boiler.
The controller on the right is a digital timer. It basically energizes the built in relay once it is turned on for any duration you set it to. It switches any appliance (ac or dc). I used this for the pump as I would like my espressos to be poured at 26 seconds every time without the need for counting in my head.
The 3 controllers PID and digital timer
These controllers are what I added to the stock machine. On the left you can see two identical PID temperature controllers. What these do is control the heater by determining when to activate the solid state relay that is connected to the PID. When the PID requires the heater to be turned on it energizes the solid state relay (a switch controlled by another protocol...in this case the PID) and it completes the ac circuit to the heaters. These PIDs are accurate to the nearest 1 degree Fahrenheit which is an extreme improvement compared to the stock thermostat. Since this is a dual boiler espresso machine Idecided to use one PID for the brew boiler and the other PID for the steam boiler.
The controller on the right is a digital timer. It basically energizes the built in relay once it is turned on for any duration you set it to. It switches any appliance (ac or dc). I used this for the pump as I would like my espressos to be poured at 26 seconds every time without the need for counting in my head.