CO2F-W High Speed Carbon Dioxide Sensor

CO2F-W
High Speed Carbon Dioxide Sensor
CO2F-W is a high speed (20 Hz) CO2 sensor, ideally suited for applications which require capture of
rapidly changing CO₂ concentrations including metabolic assessment and analytical instrumentation.
Unlike electrochemical sensors the CO₂ sensors connect to customers systems using the TTL-Level
RS232 protocol. This removes the need for A to D conversion.
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High speed sensing (20Hz)
Measurement ranges from 0 to 100%
3.3V supply
Low power requirement 35mW
All sensors come pre-calibrated and temperature
compensated
Flow through adapter is optional. You can order the
sensor with or without the adapter. Please see
ordering guide at the end of this datasheet to see
how to order adapter.
CO2F-W Sensor
*Flow through adapter in picture must be specified in part
number if required.
Specifications
CO2 Measurement
Sensing Method
Sample Method
Measurement Range
Accuracy
Measurement Noise
Non Linearity
Pressure Dependence
Operating Pressure Range
© 2013 SST Sensing Ltd
DS0002 rev3
Non-dispersive infrared (NDIR) absorption
Patented Gold-plated optics
Patented Solid-state source and detector
Diffusion(Standard) / Flow through (with flow-through adapter)
0-5%, 0-20%, 0-60%, 0-100%
±70 ppm +/- 5% of reading1
<10% of reading with no digital filtering
< 1% of FS
0.1% of reading per mbar in normal atmospheric conditions
950 mbar to 10 bar2
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General Performance
Warm-up Time
Operating Conditions
< 1 minute
0°C to 50°C (Standard)
-25°C to 55°C (Extended range)
0 to 95% RH, non-condensing
Recommended Storage
-30°C to +70°C
Electrical/ Mechanical
Power Input
• 3.2 to 5V. (3.3V recommended)
• Peak current 100mA
• Average Current <15mA
Power Consumption
35 mW
Output
UART only
Dimensions and Wiring Connections
2x5 0.1” header. Pin 1 is identified on the dimensional drawing.
Function
0V
+3.3V
Sensor Rx
(in)
Sensor Tx
(out)
N/C
Pin #
1
3
5
Pin #
2
4
6
Function
N/C
0V/GND
0V/GND
7
8
Zero N
9
10
Zero Air
Pin 2 should not be connected. Pins 4 and 6 do not require connection and are internally connected
to GND.
The zeroing options are for hardware zeroing (both active low). These functions can also be
implemented by sending a serial command (recommended).
Typical connections for digital interface are GND, 3.3V, Rx and Tx. Note that the Vh for the serial Tx
© 2013 SST Sensing Ltd
DS0002 rev3
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Please follow all safety information
Note 1: All measurements are at STP unless otherwise stated.
Note 2: External Pressure calibration required.
Note 3: User Configurable Filter Response.
Part Numbering Guide
Replace A, B and C with the following values to create the part number you require.
CO2F-W A B-C
Flow Through
Ranges
With = F
Without = Leave Blank
5% = 5
20% = 20
Reverse Pins
60% = 60
100% =100
With = R
Without = Leave Blank
Examples
CO2F-WF-5 = Flow Through Adapter, without reverse pins, 5% range
CO2F-WR-20 = No Flow Through Adapter, reverse pins, 20% range
General Note: SST Sensing Ltd reserves the right to make changes in product specifications without notice or
liability. All information is subject to SST’s own data and considered accurate at time of going to print.
WARNING
CAUTION
All SST Sensing Ltd products are tested under nominal
operating conditions during the production process.
Applications for our products are varied and,as these are
outside our control, specification information provided is
given without legal responsibility. Customers should test
under their own conditions, to ensure that the sensors are
suitable for their intended application.
Do not exceed maximum ratings.
Carefully follow all wiring instructions, incorrect wiring
can cause permanent damage to the device.
Do not use chemical cleaning agents.
© 2013 SST Sensing Ltd
DS0002 rev3
Failure to comply with these instructions may result
in product damage.
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Please follow all safety information