Instruction manual

SITRANS TW
A5E00054075-05
117
Technical data
5 Technical data
Input
Selectable filters to suppress the
line frequency
50 Hz, 60 Hz, also 10 Hz for spe-
cial applications (line frequency
filter is similar with measuring fre-
quency)
Resistance thermometer
Measured variable Temperature
Measuring range
Parameterizable
Measuring span
min. 25 °C (45 °F) x 1/scaling fac-
tor
Sensor type
• Acc. to IEC 751 Pt100 (IEC 751)
• Acc. to JIS C 1604-81 Pt100 (JIS C1604-81)
• to DIN 43760 Ni100 (DIN 43760)
• Special type (R
RTD
 500 ) Multiples or parts of the defined
characteristic values can be
parameterized (e.g. Pt500, Ni120)
Characteristic curve
Temperature-linear, resistance-
linear or customer-specific
Type of connection
• Normal connection
• Sum or parallel connection
• Mean-value or differential con-
nection
Interface 2, 3 or 4-wire circuit
Measuring range limits
Depending on type of connected
thermometer (defined range of
resistance thermometer)
Sensor breakage monitoring
Monitoring of all connections for
open-circuit (function can be
switched off)
Sensor short-circuit monitoring
Parameterizable response thresh-
old (function can be switched off)
Resistance-based sensor, poten-
tiometer
Measured variable Actual resistance
Measuring range Parameterizable
Measuring span min. 10 
Characteristic curve Resistance-linear or customer-
specific
Type of connection
• Normal connection
• Differential connection
• Mean-value connection
Interface
2, 3 or 4-wire circuit
Input range 0 ... 6000 ;
with mean-value and difference
circuits: 0 ... 3000 
Sensor breakage monitoring
Monitoring of all connections for
open-circuit (function can be
switched off)
Sensor short-circuit monitoring
Parameterizable response thresh-
old (function can be switched off)