Sensor Installation and Connection 5-75
Warning: The Submersion Sensor has a strong magnet
for adherence to the manhole frame. Keep the sensor away
from metal objects as it may potentially cause damage!
Additionally, do not place the Submersion Sensor near a
computerized device with a magnetic hard drive like PCs
and laptops!
Measuring the Physical Offset
Be sure to tether level or other rigid straight item in a fixed position
to keep from losing it in the manhole structure.
1. Place tethered level or other flat, rigid item across the open
manhole frame.
Note: During installation, or if re-installation is required,
always measure the physical offset making sure to
reactivate the monitor if the measurement has changed.
Refer to Chapter 4 Configuration and Activation for more
information.
2. Place your fingers on the edge of the sensor and place
Carpenter’s Rule on your fingers so that the edge of the sensor
and the end of the Carpenter’s Rule are the same.
Placing Carpenter’s Rule at base of sensor edge
3. Read the Carpenter’s Rule measurement from point where the
Carpenter’s Rule crosses the bottom of level or other flat, rigid
straight item. Record measurement.
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