2 Installation
i. Secure the cable from the Encoder to the bracket with a tie wrap. Leave a little slack between the tie
wrap and the Encoder. The cable may be fastened to a Recorder leg for additional strain relief.
j. Re-install the float cable/tape on the Recorder float pulley. This completes the physical installation.
2.4 Electrical Installation
2.4.1. If not already done, remove approximately 2 inches (50 mm) of the outer electrical cable insulation,
taking care not to damage the insulation on the individual wires. Strip 1/4 inch (6 mm) of insulation from
each wire.
2.4.2. There are four insulated wires and a bare shield wire on the available end of the cable. The wire
colors, the barrier strip reference numbers for the stand alone unit, and their functions are as follows:
(1) Red: +5 volts direct current power input to Encoder
(2) Black: Power and signal common
(3) White: Signal (1) output
(4) Green: Signal (2) output
Shield: To Logger ground or common connection
2.4.3. Disconnect the power source of the associated Logger , insert each wire into the appropriate wire
tunnel on the Logger input connector and tighten the associated screw. For the Stevens AxSys, the input
cable from the AxSys can connect directly to the terminals on the stand alone unit, or be spliced using
white 5 position barrier strip for the chart recorder attachment unit. Check the pulley size settings on the
Logger, and set them to the size of pulley that is used with the system; generally, this will be one foot, 18
inch or 375 mm circumference.
2.4.4. Apply power and follow the Logger instruction to place the system in operation. If the direction of
water level change is not correct, disconnect system power. Exchange the positions of the white and
green signal wires and apply power again to place the system in operation. This completes the electrical
installation.
11
