ADS Environmental Services ADS TRITON+ QR 775027 A3 - Manual (Page 289)

Analog and Digital I/O 8-3
Analog Inputs
The ADS TRITON+ (with an ADS XIO) supports the monitoring of
up to two analog 4-20mA signals from other instruments. These
signals typically represent measurements made by other devices,
such as flow meters, pressure sensors, or level transducers. To
properly configure the monitor to process the signals received from
these third-party devices, you must configure the ADS Qstart
software with the signal scale and engineering units equivalent to
the signals received.
Connecting a Third-Party Instrument to an
Analog Input on the XIO
Perform the following procedure to connect each third-party
instrument or device (up to two) to an analog input terminal on the
ADS XIO:
Note: Make sure external power is available, but not
turned on, to the monitor before connecting the signal
wiring. If it is not available, you cannot complete testing,
which may require return visits by the owner representative
and/or electrician or instrument technician for wiring
problems.
1. Determine the location at which to connect to the analog signal
wiring. Make sure the distance from the signal source to the
XIO unit is as short as possible and avoid any cable runs that
would run parallel to switching panels or other control
components. These can create electrical noise that will
interfere with the signal and create false readings.