Rockwell Automation 1734sc-IE4CH E+H Instruments via HART to PlantPAx User Manual - Manual (Page 140)

140 Rockwell Automation Publication PROCES-UM002A-EN-P - July 2014
Appendix K iTEMP TMT162 Temperature Transmitter
Corrosion of the sensor connections can lead to corruption of the measured
value. The field transmitter therefore offers the option of detecting corrosion on
the thermocouples and resistance thermometers with a 4-wire connection before
measured value corruption occurs. the transmitter avoids false measured readings
and is also able to indicate a warning on the display as well as through HART or
FF protocol when wire resistance are exceeding reasonable values.
Measured Variables
Temperature (temperature linear transmission behavior), resistance and voltage.
Signals from Instrument to Control System
Signal Details
Output Signal Analog 4...20mA, 20...2mA
Load HART
Max. (VPower Supply - 11 V) / 0.022 A (current output)
Galvanic Isolation U = 2 kV AC (input/output)
Switch On Delay 4 s, during switch-on operation Ia
≤
3.8 mA (HART)
Perm. Residual ripple Uss
≤ 3 V at Ub ≥ 13.5 V, fmax. = 1 kHz