User Tools

Site Tools


Attach the salinity sensor to the three-way valve

The salinity sensor is connected to the three-way valve with a threaded nipple. Apply Teflon tape to threads of the nipple before turning it into the salinity sensor and the three-way valve. Attach barbed fittings to the other two openings of the valve, and to the open end of the salinity sensor.

The following photo shows the assembly with all fittings attached.

Mark and drill holes for the zip ties

The salinity sensor and valve assembly are located on the side of the fish tank platform.

Mark three holes for the zip ties that will hold the salinity sensor. Two zip ties hold the three-way valve to the upright of the fish tank platform.

Eventually the zip ties will bind the salinity sensor and three way valve to the upright section of the fish tank platform as shown in the following photograph.

After marking the location of the zip ties, use a hand drill and the 5/32 inch bit to drill straight through the upright. Do not attach the zip ties until after all of the tubing is connected.

Mark and drill holes for the barbed tee fitting that joins the two drain lines.

Measure and cut tubing

Have a partner hold the sensor and valve assembly into position. Measure and cut the different lengths of tubing. The tubing should form gentle curves without kinks, and also without forming excessively long loops. Attach the tubing by sliding it onto the ends of the barbed fitting. If it is difficult to slide the tubing at the end of a fitting, Use the heat gun to gently warm the end of the tubing to slip it over the fitting.

Finish the plumbing

Measure, cut, and install lengths of tubing from the drain lines to the tee. Cut a 24 inch (60 cm) length of tubing and connect it to the downstream side of the tee.

Use zip ties to secure the salinity sensor, the three way valve, and the drain tee to the wooden fish tank frame. Gradually tighten the zip ties as you make final adjustment to the positions of the components. The final plumbing loop is shown in following photo.

Note: The picture below shows an old version of the fishtank and has an inaccurate orientation of the pump. Your pump now has the motor facing upward.

Next Step

The next step is to connect the wiring of salinity sensor to the breadboard.

salinity_sensor.txt · Last modified: 2014/04/03 10:21 by nathalie