Connect the sensors

 
  

Overview

Warning: If the sensor is installed in a high-voltage environment and a fault condition or installation error occurs, the sensor leads and transmitter terminals could carry lethal voltages. Use extreme caution when making contact with the leads and terminals.

Procedure

  1. Remove the transmitter back cover.
  2. Attach the sensor leads. Follow the wiring diagram in Figure 1 to connect one sensor, the wiring diagram in Figure 2 to connect two sensors, and the wiring diagram in Figure 3 to connect one sensor with temperature.
    Note: You can connect one or two accelerometers to the CSI 9420. You can connect only one accelerometer with a temperature sensor.

    Figure 1. Connecting one sensor

    1. Connector 1 – red wire
    2. Connector 2 – white wire
    3. Connector 3 – blank
    4. Connector 4 – black wire

    Figure 2. Connecting two sensors

    1. Connector 1 – two red wires, one from each accelerometer
    2. Connector 2 – white wire from one accelerometer
    3. Connector 3 – white wire from other accelerometer
    4. Connector 4 – two black wires, one from each accelerometer

    Figure 3. Connecting one sensor (accelerometer with temperature)

    1. Connector 1 – red wire
    2. Connector 2 – white wire
    3. Connector 3 – green wire (temperature wire)
    4. Connector 4 – black wire
  3. Connect the power module or external DC power.
  4. Verify the connection through the status on the LCD (if available).
  5. Reattach and tighten the cover.
    Use a strapping wrench to tighten the cover until it will no longer turn and the black O-ring is no longer visible. This ensures that water, water vapor, or other gases do not penetrate into the housing.

Results

Note: You can use crimp-on ferrules or lugs to improve long-term reliability of sensor wiring.