Surcharge peak velocity sensor, Surcharge pressure depth sensor – ADS Environmental Services IETG FlowHawk QR 775012 A4 User Manual
Page 58
2-22 IETG FlowHawk Manual
FLOW
SURFACE VELOCITY
Measuring velocity using the surface velocity sensor
Surcharge Peak Velocity Sensor
This sensor measures the velocity of the flow during surcharge
conditions using the same methodology as the Peak Combo
Velocity Sensor. It will measure velocity only when the pipe is full.
The surcharge peak velocity sensor resides in the angled, front
portion of the sensor in front of the ultrasonic depth crystals.
Surcharge Pressure Depth Sensor
The surcharge pressure depth sensor in the Surface Combo Sensor
measures pressure depth using the same technique as the other
combo sensors, except from the top of the pipe. Since it can
provide an accurate depth only when submerged, the data from this
sensor is useful only under full-pipe or surcharge conditions. The
Surface Combo Sensor offers two options for pressure
measurement: one for measuring ranges up to 3.5 meters (11.5 ft)
and a second for measuring ranges up to 10.5 meters (34.5 ft).