BULK

This is a holder for the Atlas Scientific Probes that fits inside a PVC pipe (110mm OD), that can be used to deploy the probes underwater in a low budget. The components are 3D printable, so they need to be printed with a material that can resist in water (or worse, seawater). The proposed material for it is ASA, but other materials might work better.

Components

There are two pieces: a disk that will hold the probes, and a small additional retainer for the dissolved oxygen (DO) probe, which is too short to be held like the other probes.

The number of probes can change (maximum 4 in this design - if you have more, you can modify the step file). There is one that has a threaded part for fitting a thermowell for the temperature sensor.

The long probes (pH, EC, ORP) are to be held with a normal cablegland (PG13.5 or M20 would work). In the case of the DO probe, you need a M4 stainless steel screw (A4 for seawater) and a nut (we use a safety nut with nylon retainer).

Finally, the disk is attached to the pipe with self-tapping stainless steel screws (A4 for seawater) like these ones.

Printing

This is how the piece should be printed. Make sure that you select Detect thin walls and Detect Bridges in your slicing program.