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wtw LF 170
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Operation LF 170
94
ba54104e09 11/2010
CR2
(continued)
z rEC °C Other sensor types:
(step size 1 °C)
Note:
If the range is exceeded, the recorders
output a constant value of 20.5 mA (OFL
display). The instrument automatically
returns to the defined recorder range when
the value is within the range again.
CRc REL 1/2
(only with RT and
RT RS option)
z nF
z PS
z FRC
z UL.LL
z CS
Functions of the freely configurable relays
REL 1 and REL 2.
The configuration of these relays is
described in detail in section 4.6.1.
The REL 1 or REL2 status display shows for
which relay the setting has just been made.
Neither relay has a function when it is
delivered (nF).
CRF REL 1/2
(only with RT and
RT RS option)
z 0
z C
Switching behavior of the freely configurable
relays REL 1 and REL 2.
"O" (open) = normally closed contact
"C" (closed) = normally open contact
The switching behavior indicates the state of
the switching contact for an active relay.
This setting only appears if the limit value
control (UL.LL) function and frozen
measured value (FRC) are set for the relay.
The REL 1 or REL2 status display shows for
which relay the setting has just been made.
Setting Selection/Values Explanation
(values in bold typeface = values on delivery)
Upper final value: 15 ... 50 ... 130 °C
Lower final value: -5 ... 0 ... 110°C
Minimum spacing: 20 °C

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