Calibration; Replacing The Bluevary Gas Sensor Cartridge; Multiplexer (Gas Switching Module) - Infors HT Labfors 5 Operating Manual

Labfors 5 – Version for Microorganisms
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4.4.3

Calibration

4.4.4

Replacing the BlueVary Gas Sensor Cartridge

4.5 Multiplexer (Gas Switching Module)

Page 50 of 205
INFORS HT Gas Analyser
The display of measured values on the bioreactor should be cali-
brated after the annual maintenance of the gas analyser has been
carried out
For details about maintenance of the gas analyser refer to its sepa-
rate documentation.
Gas Sensors from manufacturer BlueSens
1-point calibration must be carried out once per month and after
installation in order to guarantee exact measurement results.
This is done directly on the gas sensor itself. The procedure is de-
scribed in the separate documentation provided by BlueSens.
The max. operating time of a BlueVary gas sensor cartridge
amounts to 9000 operating hours. Once this limit is reached, meas-
urement is no longer possible. I.e. there is no measured value out-
put anymore and the display turns red. The gas sensor cartridge
must be replaced by the sensor manufacturer.
For detailed information refer to the separate documentation from
the sensor manufacturer.
To be able to measure exit gas values - usually O
bio processes are running in parallel, every single bioreactor usu-
ally has to be equipped with the corresponding measuring system
(see chapter "Exit Gas Analysis"). Using one or more of the equip-
ment's manufacturer's Multiplexers makes it possible to use only a
single measuring system for this. The exit gases from the individual
bioreactors are directed sequentially to the measuring system used
by means of the gas switching module(s). The determined values
are assigned to the corresponding bioreactor.
When using Multiplexers, the measurement information for the indi-
vidual culture vessels is not available continually since one meas-
urement sensor sequentially measures the exit gas of all culture
vessels. The measurement interval achievable for each culture
vessel depends, among other things, on the gas volume stream
and the hose type used as well as its length.
and CO - while
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22 January 2019