ADS Environmental Services FlowShark Pulse QR 775004 A1 - Manual (Page 178)

C H A P T E R 11
Troubleshooting
Error Possible Reason Correction
Connections Check the connection between the sensor
cable and terminal strip. Check the
connection boxes, sensor extension cable
connections, and air compensation element
for proper connection or moisture.
Check sensor installation for proper
orientation toward the flow and horizontal
position. Sensor
Check the sensor for existing soil,
sedimentation, or silt, and remove
obstructive debris as necessary.
Check the sensor for mechanical, body, or
cable damage, and replace the sensor,
when necessary.
Important: When no flow depth exists,
measuring flow velocity is not possible.
Water-ultrasonic measurement: Check the
sensor for horizontal installation. Check for
sensor function in I/O > Sensors > H-
Sensor > echo profile menu.
External level measurement: Check the
external transmitter for function and signal
transmission. Inspect cables, clamp
connections, short circuits, and contact
resistances.
Pressure cell measurement: Inspect the
compensation tube and hardware for
obstructions.
No Indication of Flow
(0 or ----)
Flow Depth
Measurement
When flow depth is greater than 2.56 inches
(65 mm), the FlowShark Pulse is in Q/H
measurement mode at initial start-up.
Manually enter the velocity at a depth of 2.56
inches (65 mm) in the CAL > Flow vel. >
Velocity h_crit parameter. Perform this
procedure only one time.