MAN-0093 Rev 0 Oxygen Sensor
June 2008
Net Safety Monitoring Inc.
10
2.3.2 Sensor Wiring
Warning
Do not open the transmitter in a classified area(Do not open when an explosive atmosphere
may be present). Ensure the power to the transmitter is switched off before connecting sensor wires.
Warning
Avoid touching electronic components, as they are susceptible to electrostatic discharge
(ESD). Refer to Appendix A, “Electrostatic Sensitive Device (ESD)”.
Connect the colored sensor wires to the sensor terminals in the applicable transmitter. Refer to the Table 3 for
the sensor terminal definitions.
Table 3: Sensor Terminal Definitions of Millennium II Transmitters
Sensor
Terminals
Sensor
Wire
White
Red
Blue
Black
Green
Marked
+VDC
Sig
A
Sig
B
COM
Shld
Function
10.5
‐
32VDC
A
B
Common/Supply
Ground
Earth
Ground
NOTE:
When separating sensor from transmitter using Net Safety separation kit, refer to Multi-purpose
Junction Box Manual (MAN-0081) for terminal designations.
SECTION 3: Operation
3.1 Configuration Settings
All configuration settings are accessed through the Millennium II series transmitter. This is done by setting dip
switches on the Millennium II Basic and by selecting menu options in the Millennium Transmitter. See relevant
transmitter manual.
3.2 Sensor Power Up
When power is applied to the sensor, a 60 second power up routine will begin, where the sensor is being
automatically tested to ensure proper functionality. Refer to applicable Millennium II transmitter manual for
status indications during this period.
3.3 Sensor Communication
The ST340 sensor uses a proprietary protocol to communicate to the Millennium II transmitter series. The
sensor should never be connected to any device other than the Millennium II series transmitters. Selected dip
switches and menu options are communicated to the sensor by the transmitter. These configurations are stored in
the sensor’s memory. If the configuration settings are not done correctly, the sensor will not communicate
properly with the transmitter.
