SST O2I-Flex, Manual

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© 2010 SST Sensing Ltd 1 www.sstsensing.com
DS0074 Rev 7
FEATURES
 Provides the electronics necessary to power
and control SST’s range of dynamic oxygen
sensors
 High accuracy linear output
 Selectable output measurement ranges:
Standard ranges of 0-25% O
2
and
0-100% O
2
or fully adjustable via RS232 when
configured in 0-100% O
2
mode
 Multiple outputs:
4-20mA, 0-10
V
DC
and RS232 comms
interface
 Externally triggered automatic or manual
calibration. Calibration can also be initiated via
an on-board push button switch
 Can be calibrated in normal air (20.7% O
2
) or in
any other known O
2
concentration
 Cycling 3.3
V
DC
logic output allows direct
monitoring of the O
2
sensor pump cycle for
diagnostic purposes

Selectable output filtering allows adaptive, fast
and dynamic or slow and stable output
response
 Power and Sensor Operating LEDs
 Removable polarised screw terminals for easy
wiring
SPECIFICATIONS
Maximum ratings
Supply voltage 24V
DC
± 10%
Current consumption 600mA max
@ 24V
DC
4-20mA Load 100-600Ω
Temperature limits
Storage -10 to 70

C
Operating -10 to 70

C
O2I -
Flex
APPLICATIONS
 Combustion control including oil, gas and
biomass boiler applications
 Composting
 Laboratory & building air quality monitoring
including confined space personnel safety
 Industrial process control i.e. gas mixing for
welding and steel making
 Oxygen generation systems
 Medical
 Scientific including respiratory studies of a
community or an organism, plants and
animals
 Food and beverage packaging
 Applications where low oxygen is key
including fermentation, rust and corrosion
prevention, inerting and purging
O2I -
Flex
Oxygen Interface