ADS Environmental Services Portable FlowShark Pulse QR 775006 A2 - Manual (Page 49)

3-12 ADS Portable FlowShark Pulse Manual
Sensor Installation
When installing the sensors, use only non-corrosive fastening materials and fasten the
sensors both securely and tightly. Orient the velocity sensor so that the sloped side of
the sensor is facing upstream against the direction of the flow.
To avoid disturbances from electrical interference, do not locate
sensor cables close (or parallel) to an engine (motor) or main
power lines.
Water-Ultrasonic Velocity/Combination Sensor
To install the combination sensor permanently at the bottom of the pipe, use 4
stainless steel screws of sufficient length (M5, between 1.18 and 2.76 inches (30 and
70 mm)) with the accompanying anchors, when necessary, or use an appropriate
mounting plate with the sensor and properly anchor the plate. Choose screws of an
adequate length to ensure the sensor can be safely and securely fastened and the
installation will remain durable under any operational conditions. Determine the
length of the screws based on the construction, consistency, and integrity of the
structure to which the sensor will be secured. ADS does not recommend using studs
or similar types of bolts directly on the sensor plate.
Screws and fasteners extending into the flow can introduce
turbulence or build-up in a wastewater environment, potentially
resulting in erroneous flow measurements. Therefore, use well-
fitting, counter-sunk screws and screw them completely into the
mounting plate so that they are as flush as possible with the plate.
Unless otherwise specified, install the sensor at the center of the pipe with the beveled
edge facing the oncoming flow (upstream).
Although the design of the sensor significantly limits the build-up of debris from the
flow, the sensor mounting plate is more susceptible to build-up. Therefore, make sure
that a gap does not exist between the sensor mounting plate and the bottom of the
pipe. Following installation, seal any gap or seam that may exist around the tip of the
sensor with silicone or a similar material.