Nortek Vectrino - Diagnostic Testing Using the Probe Check Function

46
Rev. C • 10.2004
Diagnostic Testing Using the Probe Check Function
The fi gs below show you Probe Check displays resulting from different problems.
All of the following apply for probes in the water, unless otherwise noted.
Boundary too close
The leading edge (G) of the
boundary echo should be no
closer than 110 sample counts.
If the boundary is close to the
sample volume, scrutinize the
velocity to make sure it is OK.
250
200
150
100
50
0
Amplitude
0 50 100 [mm] 150
G
Too little backscat ter
The signal level (H) should reach
at least 70 counts.
250
200
150
100
50
0
Amplitude
0 50 100 [mm] 150
H
Broken probe indicated by fl at
signal around 40 counts
Return the Vectrino to the
factory!
250
200
150
100
50
0
Amplitude
0 50 100 [mm] 150
APPENDIX 1
Troubleshooting