ADS Environmental Services IETG FlowHawk QR 775012 A4 - Manual (Page 10)

Introduction 1-3
Telog unit is not IS certified, the installation will not be
considered intrinsically safe if the Ru-33 is installed in the
manhole with the monitor.
Sensors
The FlowHawk monitor supports several approved IS sensors that
vary in measurement methodology, redundancy, and other features.
The monitor is approved for accommodating up to two of the same
or different types of IS sensors. Following are the approved IS
sensors:
 Peak Combo Sensor Performs upward ultrasonic depth,
pressure depth, and peak velocity measurement and mounts at
or near the bottom (or invert) of the pipe under the flow surface
(p/n 8K-CS4-05-35, 8K-CS4-15-35, or 8K-CS4-30-1H).
 Surface Combo Sensor Performs downward ultrasonic
depth, surcharge pressure depth, surcharge peak velocity, and
surface velocity measurement and mounts at the top (or
soffit/crown) of the pipe above the flow (p/n 8K-CS5-V2-05-30
or 8K-CS5-V2-15-30).
 Ultrasonic Depth Sensor (ultrasonic and optional
pressure depth only) Performs downward ultrasonic depth
and pressure depth (optional) measurement and mounts at the
top (or soffit/crown) of the pipe above the flow (p/n 8K-CS3-
V0-00-30, 8K-CS3-V0-05-30, or 8K-CS3-V0-15-30).
 Slimline Peak Combo Sensor Performs upward ultrasonic
depth and peak velocity measurement and mounts at or near the
bottom of the pipe under the flow surface (p/n 8K-CS4-35).
Extension cables are available for these sensors in lengths up to 91
meters (300 ft).
Note: Detailed descriptions and specifications for the
sensors are available in Chapter 2, System Overview, and
Appendix A, Specifications.