Ametek A-DS1B Installation And Operation Manual page 19

Installation Notes on Ametek UHP 0-5 Vdc Transmitter (Continued)
Wiring Notes: 0-5 Vdc pigtail cable option
1. Hookup: The 0-5 Vdc output style transmitter utilizes a 3 wire system. Voltage
applied from a power supply into the Red Wire (+) and Black Wire (-) must be used
to power the unit. The Signal output (0-5 Vdc) is taken from the White Wire (Signal
(+)) and the Black Wire (Signal (-)). Note that the Black Wire is common to both the
Voltage Input (-) and Signal Output (-). When connecting a load to the White Wire,
remember to connect this signal to a high impedance amplifier circuit.
2. Grounding and Shielding: The green lead is a connection to the transmitter case and
may be used as required to provide continuity to the case. For use in high EMI fields,
the user may wish to tie the additional drain wire (this is also tied internally to the
transmitter case) to the gas cabinet case or system earth ground to provide optimal
EMI shielding. With some installations, it may not be desirable to tie the green wire
or drain wire to the gas cabinet case or system earth. Ground loops may prevent this
type of hookup so caution is advised.
Wire Color
Red
Black
White
Green
Shield
pg. 2-5
Signal/Exc.
+ Exc.
- (Exc./Signal)
+ Signal
Case
Case