Ametek A-DS1B Installation And Operation Manual page 18

SECTION II
Installation Notes on Ametek UHP 0-5 Vdc Transmitter
Wiring Notes: Bendix® compatible connector (0-5 Vdc)
1. Hookup: The 0-5 Vdc output style transmitter utilizes a 3 wire system. Voltage
applied from a power supply into connector Pin A (Excitation (+)) and connector Pin
D (Excitation (-)) may be used to power the unit. The signal output (0-5 Vdc) is taken
from connector Pin B (Signal (+)) with respect to connector Pin D (Signal -). Note
that connector Pin D is common to both the Voltage input Excitation (-) and Signal
output (Signal (-)). When connecting a load to connector Pin B, remember to connect
this pin to a high impedance amplifier circuit.
2. Grounding and Shielding: The Bendix® compatible connector Pin C may be used to
connect to the transmitter case. For use in high EMI fields, the user may wish to tie a
mating cable shield or drain wire to this pin to provide shielding to the transmitter
case. With some mating connectors, it is not necessary to tie the shield or drain wire
to Pin C if the mating cable has a clamp which can be crimped over the drain wire and
the act of mating the two connectors provides shield continuity. A separate wire may
also be tied to Pin C to bring the case ground connection to another location. In many
cases, the mating cable shield can be tied to the gas cabinet case, providing an
excellent shield to EMI. In some cases, however, ground loops may prevent this type
of hookup so caution is advised.
pg. 2-4
ELECTRICAL