Nortek Vectrino - Page 47

NORTEK VECTRINO VELOCIMETER
User Guide
47
Rev. C • 10.2004
Weak or non-functioning
receive transducer
If one receiver differs from the
others by more than 20 counts
(I), clean the receive transducer
and make sure it is not blocked.
If this does not rectify the
problem, return the Vectrino to
the factory.
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0
Amplitude
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I
Noise level is too high
indicating a possible
grounding problem
If the average signal in the
area marked (J) is more than
80 counts, you may have a
grounding problem – see
Grounding Problems in this
chapter of the manual.
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200
150
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0
Amplitude
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J
Grounding problem
This illustrates a testing of the
probe by placing the receivers in
water, but leaving the transmitter
out of water. The grounding
problem in indicated by the
signal in region K being above
70 counts – see Grounding
Problems in this chapter of the
manual.
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Amplitude
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K