Intab PC-Logger 2100 User Manual page 21

3) Connecting two wire transmitters using "2100" V-Out as power source:
Current from the transmitter passes into shunt at "I" and developed voltage is
measured by at "+". From "-" comes return current that is fed back to "Gnd" at
the same time establishing ground reference.
4) Connecting two wire transmitters with external power source:
Connection follows same rules as above but the V-Out is replaced by an external
supply.
3 CONNECTIONS
The auxiliary V-Out can
be used to power
external equipment like
20mA transmitters. It is
actually just the mains
adapter voltage that is
passed on to the screw
terminal.
In the example at left the
V-out supplies power to
the transmitter.
Two wire
transmitter may
sometimes require
higher voltages to
work properly. In
those cases you must
use an external PSU.
Page 15