MIRI
®
TL family`s multiroom IVF incubators User Manual Rev. 1.0
91
•
An O
2
analyzer with a range of 0.0 – 20.0%.
•
A Pressure tester with a range of 0.0 – 1.0 bar.
•
A Multimeter.
34.2 Recommended additional equipment
All equipment must be of high quality and calibrated.
•
A VOC meter able to measure the most common volatile organic compounds at
least at the ppm level.
•
With the laser particle counter, a sample should be taken just above the MIRI
®
TL6
and MIRI
®
TL12 multiroom IVF incubator. The reading should be noted down as
the background particle level.
Recommended additional equipment can be used for further installation testing that will
minimize the likelihood of problems on-site.
35 Testing
35.1 Gas supply CO
2
For the regulation system to maintain the correct CO
2
concentration level in the MIRI
®
TL6 or MIRI
®
TL12 multiroom IVF incubator compartments, the device must be
connected to a stable source of 100% CO
2
at 0.4 – 0.6 bar (5.80 – 8.70 PSI) of pressure.
Measure the CO
2
concentration in the gas supply by routing the gas line into a bottle
without a lid and a suitably large opening. Set the pressure/flow so that the bottle is
flushed continually with gas, without increasing pressure in the bottle (i.e., the amount of
gas exiting the bottle should be equal to the gas volume entering the bottle).
Pressure build-up will affect the measured CO
2
concentration, as CO
2
concentration is pressure-dependent.
Sample from the bottle near the bottom with the gas analyzer.
PASS: CO
2
concentration measured must be between 98.0% – 100%.
Use of CO
2
gas with moisture will damage the flow sensors. Moisture level must
be verified on the gas manufacturer's certificate: only 0.0 ppm v/v Max is
permissible.
