Siemens sitrans tr200, Operating Instructions Manual

Page: 59 / 78

SITRANS TR200/TR300
Operating Instructions, 04/2007, A5E01071992-01
59
Technical specifications
10
input
Resistance thermometer
Measured variable Temperature
Sensor type Pt25 to Pt1000 to IEC 60751
Pt25 to Pt1000 (JIS C 1604; a = 0.00392 K
-1
)
Ni25 to Ni1000 to IEC 60751
special type with special characteristic curve (max. 30
points)
Sensor factor 0.25 to 10
(Adaptation of the basic type, e.g. Pt100, to version Pt25
to Pt1000)
Units of measurement °C or °F
Interface connection
Normal connection 1 resistance thermometer (RTD) in two-wire, three-wire
or four-wire input
Calculation of mean value 2 equal resistance thermometers in two-wire input for
calculation of the mean value of the temperature
Calculation of differential value 2 identical resistance thermometers (RTD) in two-wire
input
(RTD1 - RTD2 or RTD2 - RTD1)
Connection
Two-wire input Parameterizable line resistance ≤100 Ω (loop resistance)
Three-wire input No trim necessary
Four-wire input No trim necessary
Sensor current ≤ 0.45 mA
Response time ≤ 250 ms for 1 sensor with broken wire monitoring
Broken wire monitoring Always active (cannot be switched off)
Short-circuit monitoring Can be switched off (value can be adjusted)
Measuring range Programmable
Min. measuring span 10 °C (18 °F)
Characteristic curve Linear to temperature or special characteristic curve