Initial pictures shown below give an impression of the original implementation. Some modifications were needed to solve the condensation issue explained in this lesson learned. Pictures including these modifications were copied at the bottom.
Many thanks to my friend and colleague Dylan who was so kind to mill this printed circuit board on his self-made milling machine!
Bottom view before assembly
Top view after assembly
3D view after assembly
The sensor and a cable gland, well suited for mounting
The sensor, mounted
The sensor, mounted and sealed. To seal, the plastic lid of a pepper bottle was glued to the cable gland with some TEC7.
The assembly, before closing
A view at the bottom of the assembly. Note that the aluminium angle brackets at the sides are a bit dirty; they are reused from the past.
The manhole, prepared to contain the assembly. Note the aluminium angle brackets placed against the walls of the manhole and the cable that comes in via the pipe.
And finally, the end result.
Lid closed, job done!
Top view after assembly, including the mounted sensor
A view at the bottom of the box
The assembly, before closing
The assembly, closed
