ADS Environmental Services Portable FlowShark Pulse QR 775006 A2 - Manual (Page 126)

Parameter Settings 6-27
P
Water-Ultrasonic and Pressure
Sensor Combination: Air-Ultrasonic and Water-Ultrasonic
ADS recommends this option for measuring flow at a location that can experience
flows from 0 mm up to 80 percent capacity. The water-ultrasonic depth sensor
measures depths from approximately 2 inches and above; the air-ultrasonic depth
sensor measures the lower depths.
The water-ultrasonic combination sensor must be installed at the bottom of the pipe in
the center.
Water-Ultrasonic and Air-Ultrasonic
Sensor Combination: Water-Ultrasonic and Two-Wire Sensor
ADS recommends this combination for applications similar to the previous option.
However, the external 2-wire sensor would be used in place of the air-ultrasonic depth
sensor to measure low flow depths.
Sensor Combination: Air-Ultrasonic, Water-Ultrasonic, and Pressure
ADS recommends this combination for locations exhibiting flows from 0 inches up to
overflow to achieve the highest level of accuracy in measurement. The pressure
sensor measures the upper measurement range, the water-ultrasonic depth sensor