Endress+Hauser Liquipoint FTW33 Operating Instructions Manual page 38

Description of Device Parameters
Description
Switch on value
Options
Input range
Factory setting
Output 1/2 (OU1/OU2)
Navigation
Description
Switch on value
Options
38
To prevent rapid switching back and forth when values are close to the switch point
"SP1"/"SP2" or switchback point "rP1"/"rP2", a delay in the range of 0.3 to 60 seconds, to one
decimal place, can be set for individual points.
If the measured value leaves the switching range during the delay time, the delay time
starts again from scratch.
%
SP2 SP1
rP2 rP1
dS1
OU1
OU2
0 0-signal, output open in the quiescent state
1 1-signal, output closed in the quiescent state
A Hysteresis (difference between the value of the switch point "SP1" and the value of the switchback point "rP1")
HNO Normally open contact (MIN)
HNC Normally closed contact (MAX)
% Coverage of sensor
SP1 Switch point 1/SP2: Switch point 2
rP1 Switchback point 1/rP2: Switchback point 2
dS1 Set time for which the specific switch point must be reached continuously without interruption until an
electrical signal change takes place.
dR1 Set time for which the specific switchback point must be reached continuously without interruption until an
electrical signal change takes place.
Last value selected prior to switching off.
No selection. The user is free to edit the values.
0.3 to 60 s
0.5 s (Switching delay time dS1/dS2)
1.0 s (Switchback delay time dR1/dR2)
Application → Output Switch 1/2 → Output 1/2 (OU1/OU2)
Hysteresis: Determining whether sensor is free or covered.
Last function selected prior to switching off.
• Hysteresis normally open (MIN)
• Hysteresis normally closed (MAX)
dS1 dR1
Liquipoint FTW33
A
1
HNO (MIN)
0
1
HNC (MAX)
0
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Endress+Hauser