234
SAW sensor – Parameter
Type 8098 FLOWave L
Table 32:
Diagnostics: special events in the process
Special event in the process
Meaning
Special condition
Not totally filled
The tube is not totally filled.
If the parameter
Refresh time
is set to
Very short
, the event
Not totally filled
cannot be monitored.
Not all the sensors are in contact
with the liquid.
Liquid out of range
The speed of sound in the liquid is out
of range.
•
DN08, 3/8'', 1/2'': The speed
of sound in the liquid is lower
than 1000 m/s or higher than
2000 m/s.
•
DN15 and above, 3/4'' and
above: The speed of sound in
the liquid is lower than 800 m/s
or higher than 2300 m/s.
Unstable flow
The flow rate is not stable.
The standard deviation of the flow
rate measurements is too high.
Low flow cut off
The cut-off value of the flow rate has
been used.
The cut-off function must be
enabled: see chapter 15.4.9
Enabling the cut-off function of the
Change of liquid
A different liquid flows in the pipe.
The message is active for 10 s on the
display.
The speed of sound in the liquid
has changed by more than 3 m/s
in 1 second.
Backward flow
The liquid flows in the opposite
direction as the one set in
chapter 17.4 Setting the direction of
.
-
Table 33:
Diagnostics: special events occurring on the sensor
Special event occurring on the
sensor
Meaning
Special condition
Sound cond. out of range
There are gas bubbles or solid
particles in the liquid.
-
Table 34:
Diagnostics: special events occurring on the electronics
Special event occurring on the
electronics
Meaning
Special condition
Output 1, open loop
There is a connection problem on the
related output.
The related analogue output must
not be disabled. See chapter 18.4
Output 3, open loop
Output 1, Diag. error
There is a connection problem on the
related output or a high resistance is
detected in the loop.
The related analogue output must
not be disabled. See chapter 18.4
Output 3, Diag. error
Output 2 overload
An overload has been detected on the
related digital output.
The output has switched.
-
Output 3 overload
English
Summary of Contents for Flowave 8098
Page 4: ...General contents 4 Type 8098 FLOWave L English...
Page 12: ...12 Type 8098 FLOWave L English...
Page 36: ...36 Technical data Type 8098 FLOWave L English...
Page 72: ...72 Type 8098 FLOWave L English...
Page 78: ...78 Commissioning Type 8098 FLOWave L English...
Page 96: ...96 Type 8098 FLOWave L English...
Page 144: ...144 Type 8098 FLOWave L English...
Page 248: ...248 Type 8098 FLOWave L English...
Page 286: ...286 SAW sensor Maintenance Type 8098 FLOWave L English...
Page 304: ...304 Type 8098 FLOWave L English...
Page 316: ...316 Type 8098 FLOWave L English...
Page 350: ...350 Spare parts and accessories Type 8098 FLOWave L English...
Page 352: ...352 Appendix Type 8098 FLOWave L English...
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Page 354: ...www burkert com...