CEB Press/Manufacturing Instructions/Sensor Unit

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Tools Required

• solder iron
• heat gun
• wire cutter/stripper
• lighter

Materials Required

• hall effects sensor
• 1/2" poly pipe 5/8" o.d.
• underground telephone cable 4 wire
• potting compound
• disposable mixing cups
• tape
• cat5 cable
• shrink wrap

Diagrams

Fabrication Steps

1. cut telephone cable 70" long
2. strip shielding plastic 1.5" and 8" at either end
3. solder hall effects sensor

Step 1. Start with potting compound, 2 parts.

Step 2. Take one Hall Effect sensor.

Fabricate the Sensors

1. Cut three 3’ sections of Underground Telephone Cable.
2. Strip about 3” of the outer covering off each end of the three sections
3. Strip about ¼” off the orange, blue and blue-white wires at each end of each section.
4. Tin the ends of the all of the wires on all of the sections
5. Splice, with Solder, about 6” of the inner strands of some Cat-5 Cable (E17) to the wires at one end of each of the sections of Underground Telephone Cable
6. Thread shrink-wrap (E28) to the three wires on the other end of each of the three sections of Underground Telephone Cable.
7. Solder a Hall Effect Sensor (E20) to one endof the ther sections (pins numbered from left to right)
   1. Pin 1: Orange
   2. Pin 2:  Blue-White
   3. Pin 3: Blue
8. Shrink the Shrink-Wrap around each of the solder joints
9. Cut three 3” sections of PVC Pipe (E15).
10. Place a section of Pipe around each of the three hall effect sensors and encase them in Potting Compound (E29) with the Pipe Caps (E16) in place.