ADS Environmental Services IETG FlowHawk QR 775012 A4 - Manual (Page 103)

3-44 IETG FlowHawk Manual
2. Continue securing the cables until reaching the Surface Combo
Sensor, Ultrasonic Depth Sensor, or the top of the pipe.
3. Pull the ties until they are taut.
Warning: Do not over-tighten the cable ties or kink the
sensor cables! The depth cable sheathes two components:
the electrical cables that operate the sensor and an air tube
that ventilates the sensor. Over-tightening the ties or
kinking the cable can damage or restrict the air tube,
causing incorrect pressure depth readings. In addition,
make sure the connector-end of the sensor is not kinked,
does not contain moisture, and includes an attached dryer
tube filled with active blue desiccant.
4. Use the diagonal cutters to cut off the excess portion of the
cable ties.
Mounting the Surface Combo Sensor or the
Ultrasonic Depth Sensor
Two special installation methods are available for mounting the
Ultrasonic Depth Sensor and one for the Surface Combo Sensor:
 Standard Mount This mount, the most common mounting
method in use today, is used for mounting the Surface Combo
Sensor or the Ultrasonic Depth Sensor in the pipe during
special installations.
 Surcharge Mount This mount primarily is used for
mounting the Ultrasonic Depth Sensor in the manhole at sites
where the flow continually occurs within 51 mm (2 in) of the
top of the pipe, pipe conditions and/or hydraulics prohibit the
installation of a sensor in the pipe, or surcharges frequently
occur. Surcharges are conditions where the flow completely
fills the pipe and extends up into the manhole.