WIKA T32. S Serie Guide De Sécurité page 7

2. Safety
The temperature transmitter achieves, for all recognised connections for temperature
sensors, an SFF (Safe Failure Fraction) sufficient for SIL 2 of > 90 %.
The instrument generates a current signal in the approved measuring mode of a
nominal 4 ... 20 mA, that is dependent upon the sensor signal. The effective range of
the output signal limited to a minimum of 3.8 mA and a maximum of 20.5 mA (factory
setting in basic configuration).
WARNING!
Do not exceed the specifications for model T32.xS given in the data
sheet and operating instructions. In order to ensure a safe functionality
of the current output, the correct terminal voltage must be present in the
instrument.
The following terminal voltage limits apply:
Instrument model
T32.1S.000-S
T32.3S.000-S
T32.1S.0IS-S
T32.3S.0IS-S
T32.1S.0NI-S
T32.3S.0NI-S
T32.1S.0IC-S
T32.3S.0IC-S
WARNING!
Only the temperature sensors listed in chapter 2.1 are approved for use in
a safety-related application.
The following sensors and operating modes are NOT allowed for
operation in a safety-relevant application:
Potentiometers
■
Other resistance sensors
■
Other mV sensors
■
Differential mode in duplex sensor operation
■
WIKA safety manual temperature transmitter T32.xS
Terminal voltage limits
DC 10.5 ... 42 V
DC 10.5 ... 30 V
DC 10.5 ... 40 V
DC 10.5 ... 30 V
GB
7