ADS Environmental Services IETG FlowHawk QR 775012 A4 - Manual (Page 37)

2-1
C H A P T E R 2
System Overview
The IETG FlowHawk ™ flow monitor supports four flow
measurement devices for gathering flow data:
 Peak Combo Sensor This sensor, which mounts at or near
the bottom of the pipe, contains an upward-looking ultrasonic
depth sensor, Doppler peak velocity sensor, and pressure depth
sensor.
 Surface Combo Sensor This sensor, which mounts at the
top of the pipe, contains an ultrasonic depth sensor, a surface
velocity sensor, a surcharge peak velocity sensor, and a
surcharge pressure depth sensor.
 Ultrasonic Depth Sensor This sensor, which mounts at the
top of the pipe, contains only a quadredundant ultrasonic depth
sensor and an optional pressure depth sensor.
 Slimline Peak Combo Sensor This sensor, which mounts
at or near the bottom of the pipe, contains an upward-looking
ultrasonic depth sensor and a Doppler peak velocity sensor.
The monitor receives the raw flow depth and velocity data from the
sensors based on a defined time interval and then processes the
data, which may involve calculating the flow rate. The monitor
memory can store up to 35 days of data based on logging 3 entities
(from a Peak Combo Sensor) at a 2-minute sample rate. The
storage capacity varies according to the number of sensors attached
to the monitor, the number of entities stored, the rate at which the
entity data is logged, and the functions activated for the sensors.