Emerson Net Safety SC311, Reference Manual

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Reference Manual Operation
MAN-0091, Revision 8 June 2016
Operation 13
3.4 Millennium II Basic transmitter configuration
When using the SC311 sensor with the Millennium II Basic transmitter, DIP switch on the transmitter
should be set up as follows:
Table 3-1 Millennium II Basic transmitter DIP switch 2 positions
Position 1 Position 2 Position 3 Position 4 Gas Curve
OFF OFF OFF OFF Methane (0)
ON OFF OFF OFF Propane (1)*
OFF ON OFF OFF n-Butane (2)*
ON ON OFF OFF Iso-Pentane (3)*
OFF OFF ON OFF n-Pentane (4)*
ON OFF ON OFF Ethane (5)
OFF ON ON OFF Iso-Butane (6)*
ON ON ON OFF Ethylene (7)
OFF OFF OFF ON Hexane (8)*
ON OFF OFF ON Propylene (9)*
*Indicates gases are not third party performance verified
3.5 Fault conditions
The SC311 sensor will provide a number of fault conditions that the Millennium II transmitter will
translate into an analog or fault relay output. These fault conditions are outlined in the following table.
Table 3-2 Fault conditions
Fault condition Analog output (mA) Fault relay output
Span calibration failure 2.5 Fault
Zero calibration failure 2.5 Fault
Sensor over-range 2.5 Fault
Low temperature 2.5 Fault
High temperature 2.5 Fault
Low voltage 2.5 Fault
High voltage 2.5 Fault
Replace sensor (during calibration cycle) Momentary 2.5 Momentary Fault
Memory fault 2.5 Fault
Power supply fault 2.5 Fault