Twin tanking.

[Julian]

Just a quick update ...

I had a tidy up, I know it doesn't look like it.  I cut a baseboard, printed a stand for the LCD and got hold of a lovely rainbow coloured cable for it.

Still monitoring three temperatures (surprising how similar all the readings are).  The word "Purge" can be switched on and off to indicate purge cycle.

Need to look at getting the temperatures to switch valves next.





The above uses three thermistors to sense the temperature.  I bought some other, smaller thermistors to try and boy, are they small ...

[Rotary-Motion]

must say it looks the part there Julian

 

although the screen has gone all shiny from photo so cant read it, might be the flash on camera?

[Julian]

It's just ledgable ... all temperatures are within 0.2°C!  The problem was the screen back light was so bright that the camera flash didn't go off.

With a darker screen the flash may work, but the screen will most likely get over exposed.