wtw Oxi 170, Operating Instructions Manual

Page: 36 / 64

Operation Oxi 170
98 ba24105e08 11/2010
Setting table for limit indicators:
Note
Hysteresis and switching delay prevent frequent switching for
measured values that are close to the limit value.
Setting Selection/Values Explanation
UL
or
LL
Any within the
measurement range Upper or lower limit.
Setting tolerance according to the measured
value display.
Operating note:
– Set the first (flashing) digit with
<UP><DOWN> and confirm with
<ENTER> .
– Set the other digits in the same way.
HS
0 to 10 % of the
measuring range Hysteresis.
Difference between switching point and limit
value, if the measured value moves away
from the limit value.
Operating note:
– Set the first (flashing) digit with
<UP><DOWN> and confirm with
<ENTER> .
– Set the other digits in the same way.
td 00
:
00
...
59
:
59
Switching delay (in Min:Sec).
The time period for which the limit value
including the hysteresis must be exceeded
before the relay switches.
Operating note:
– Set the seconds (right flashing digits) with
<UP><DOWN> and confirm with
<ENTER> .
– Then set the minutes (left flashing digits)
with <UP><DOWN> and confirm with
<ENTER> .