Eppendorf Galaxy CO2 Sensor - Manual (Page 79)

Equipment options
Galaxy ® 170 R/170 S CO
2
Incubators
English (EN)
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4. Reopen the door for 15 seconds to release any build-up of humidity.
5. Repeat steps 3 and 4 every 30 minutes while monitoring the DATALOGGER O
2
Graph. The oxygen level
should recover after a few hours.
6. Leave the incubator for a few more hours to be ensure that the sensor membrane has thoroughly dried
out.
7. Replace the hydrophobic filter disc (see Replacing the filter disc on p. 77).
8. Re-humidify the incubator.
9. After 2 to 3 hours, carry out an OXYGEN SENSOR-REF TO ATMOSPHERE (see Referencing to
atmosphere on p. 74). When the referencing has been successfully completed, the incubator is ready for
use.
12.4.10 Specifications
The Oxygen Control option has the following characteristics:
Sensor Type Self-powered, diffusion-limited, electrochemical cell with temperature
compensation.
Zero Signal in Nitrogen < 50 μV
Temperature Compensation ± 2 % of signal variation from 0 - 40 °C
Relative Humidity Range 0 - 99 %, non-condensing
Operating Temperature Range -20 °C to + 50 °C
Resolution 0.01 % Oxygen
Expected Operating Life 1 - 2 years in ambient oxygen
Hydrophobic Filter Operating
Life No data available on the filter lifespan but we are confident to expect it
will last at least 6 months.
Nitrogen Input Rate 20 L/min at 14.5 PSI (1 bar)
Typical Oxygen Reduction Rates 3 minutes to 16 %
4 minutes to 11 %
8 minutes to 6 %