Xylem EZ100 Sensor Display - Manual (Page 10)

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IX. Appendix B: External Power and Recording Devices
a. Use the following instructions to connect an external source that will
allow the display and sensor to be powered continuously:
1. Remove both 9 VDC batteries.
2. Remove the battery leads from terminals T1 and T2 (see
Figure 1 on page 5).
3. Drill a hole in the bottom of the case next to the sensor wire
for a power wire to pass through. Run all external wires
through this hole.
4. Seal any gaps with silicon adhesive.
5. Connect a 12VDC to 36VDC external power source to the
power terminals, positive to T1 and negative to T2 in place of
the battery leads. The display and sensor are now powered
continuously.
b. Follow the diagram below to connect external power and a PLC or
recording/monitoring device.