ADS Environmental Services Portable FlowShark Pulse QR 775006 A2 - Manual (Page 50)

Installation 3-13
The bottom of the pipe must be completely flat (plane surface) for
sensor installation. Otherwise, the sensor could experience
damage or leakage, resulting in potentially irreparable damage to
the electronic components.
Do not bend the ground plate during installation or removal. Use
only an appropriate screwdriver for sensor removal; do not use a
pry bar, chisel, hammer, lever, crowbar, hammer drill, or similar
tool. In addition, do not use excessive force to remove the sensor.
Do not remove any sensor parts! Removing or loosening the
ground plate and/or cable glands on the sensor will result in
leakage and sensor failure.
For sensors without an integrated pressure element, the sensor may be installed in a
depression at the bottom of the pipe up to 0.5 inches (12 mm) deep. This will allow
the lowest measurable depth level and limit the susceptibility of the sensor to debris
buildup. Once installation is complete, fill in the remaining gaps and seams with a
permanently elastic material, such as silicone.
Never countersink combination sensors with integrated pressure
measurement cells. The sealing material on the sides of the
countersunk sensor or accumulated debris/silt could result in
erroneous measurements and/or pressure measurement cell failure.
1 Pipe bottom
2 Silicone or similar
3 Water-Ultrasonic Velocity/Combination Sensor
4 Mounting plate
Suggestion for installing countersunk Water-Ultrasonic Combination Sensors
To prevent signal loss and depth measurement failure, install sensors with integrated
water-ultrasonic capability so that the signal will strike the flow surface at a right
angle.