|
PROBLEM |
POSSIBLE SOLUTION |
| Meter
reading lower than expected |
|
Source particles velocity not indicative of average
velocity
|
Relocate sensor to a position where source
particles are expected to be moving
at the average
velocity
|
|
Incorrect mounting of flow sensor
|
Remount sensor correctly
|
|
Programming error
|
Review all programmed entries
|
|
Flow rate lower than expected
|
Investigate possible causes and confirm flow rate
independently
|
|
Insufficient particle size or concentration
|
Locate sensor at position where acceptable particle
size or concentration is expected.
Inject air into the line
|
| Meter
reading when there is no flow |
|
Local ultrasonic noise source
|
Relocate sensor or remove noise source
|
| “Poor
signal” displayed when flow exists |
|
Insufficient particle size or concentration
|
Locate sensor at position where acceptable particle
size or concentration is expected.
Inject air into the line
|
|
Sensor coupling to pipe poor
|
Remount sensor to pipe correctly
|
| Meter
reading higher than expected |
|
Programming error
|
Review all programmed entries
|
|
Flow rate higher than expected
|
Investigate possible causes and confirm flow rate
independently
|
|
Particle velocity at sensor not indicative of average
velocity
|
Relocate sensor to a position where source
particles are expected to be moving
at the average
velocity
|
|
Incorrect mounting of flow sensor
|
Remount sensor correctly
|
|
Local electrical noise
|
Relocate sensor
|
| Meter
reading erratic |
Particle velocity at sensor not indicative of average
velocity and
erratic
|
Relocate sensor to a position where the velocity
profile is expected to be suitable
|
