VEGA T32.10-11-30 - Handbuch (Seite 12)

GB
2383336 12/2008 GB/D
12 WIKA Operating Instructions Temperature Transmitter T32.10/11/30
Should the cold junction compensation be operated
with an external resistance thermometer (2-wire
connection), connect this to terminals  and .
5.3.4 Connect mV-sensor
Make sure that the mV-sensor is connected with the correct polarity.
Terminals  and  have to be connected (shorting jumper / shorting
bar).
5.4 HART ® -signal
The HART ® signal is measured directly via the  ... 20 mA signal line.
The measuring circuit has to have a load of at least 20 Ω. However,
the load must not be too high, because otherwise the terminal
voltage at the transmitter will be too low in the case of relatively high
currents. For that purpose connect the cable clamps of the modem
or the HART
® Communicator, as described in chapter 11.
Connect FSK modem HART ® Communicator or use the existing
communication connectors of a power supply/line transformer. The
connection of the FSK modem and the HART
® Communicators is
polarity independent! The FSK modem or the HART ® Communicator
may also be connected parallel to the resistor!
When connecting a transmitter version intended for hazardous
areas, please observe the special conditions for safe use under
chapter 7.2.
The FSK modem for hazardous areas must always be
located in the safe area!
5. Electrical connections