Burkert Flowave 8098, Operating Instructions Manual

Page: 167 / 354

167
SAW sensor – Parameter
Type 8098 FLOWave L
increasing
monitored
value
decreasing
monitored
value
A: Error low
D: Error high
C: Warning high B: Warning low
A B C D
1
2a 2b
3a 3b
h h h h
C D
1
2b
3b
2a
3a
A B
2b
3b
1
2a
3a
h: value of the hysteresis. An hys-
teresis value that is equal to 0
means that the device reacts as
soon as a limit is reached.
A: low error limit ( Error low )
B: low warning limit (
Warning low
)
C: high warning limit ( Warning
high )
D: high error limit (
Error high
)
1: normal range of the monitored
value
2a: lower warning range of the
monitored value
3a: lower error range of the moni-
tored value
2b: upper warning range of the
monitored value
3b: upper error range of the moni-
tored value
Monitored
value is in the
Colour of the device status indicator
and generated message
Condition
Error range
Red
1)
indicator,
Failure
message • if the monitored value was in the LOWER
warning range and the LOW ERROR value is
reached.
• if the monitored value was in the UPPER
warning range and the HIGH ERROR value is
reached.
Warning range
Yellow
1)
indicator,
Out of specification
message
• if the monitored value was in the LOWER error
range and the LOW ERROR value + the HYS -
TERESIS value is reached.
• if the monitored value was in the normal range
and the HIGH WARNING value is reached.
• if the monitored value was in the UPPER error
range and the HIGH ERROR value minus the
HYSTERESIS value is reached.
• if the monitored value was in the normal range
and the LOW WARNING value is reached.
Normal range
• White
1)
indicator, no message, if
the Diagnostics in the menu SAW
sensor – Parameter is inactive
(default setting).
• or green
1)
indicator, no message, if
the Diagnostics in the menu General
settings – DIAGNOSTICS are active.
• if the monitored value was in the LOWER
warning range and the LOW WARNING value +
the HYSTERESIS value is reached.
• if the monitored value was in the UPPER
WARNING range and the HIGH WARNING
value minus the HYSTERESIS value is reached.
Fig. 55: Operating principle of the monitoring with an hysteresis
1)
If the operating mode of the device status indicator is set to NAMUR. See chapter 12.4 .
English