MIRI
®
II-12 Multiroom IVF incubators User Manual Rev. 4.0
40
Figure 16.2
O
2
pressure on the main display
The N
2
pressure value is shown in bar. The external pressure must be between 0.4
–
0.6 bar
(5.80
–
8.70 PSI) at all times. It cannot be adjusted on the incubator; this must be done on
the external gas regulator.
Remember that there is a pressure alarm on the pressure limits if the pressure
falls below 0.3 bar or rises above 0.7 bar (4.40
–
10.20 PSI).
The internal pressure sensor cannot be calibrated by the user. Under normal
circumstances, the pressure sensor is replaced every 2 years according to the
maintenance plan.
17 Firmware
The firmware installed on your MIRI
®
II-12 multiroom IVF incubator is upgradeable.
Whenever an important update is available, it will be provided to our distributors around
the world
–
they will ensure that your incubator runs with the newest available firmware. A
service technician can do this during a scheduled annual service.
The current MIRI
®
II-12 multiroom IVF incubator firmware version is 1.2.
18 pH measuring
Validating the pH of culture media should be a standard procedure.
The MIRI
®
II-12 multiroom IVF incubator is equipped with a high-grade pH measuring
system.
A standard male BNC connector is located in the back of the unit. It can be connected to most
standard pH combination probes. Probes that require a separate reference cannot be used.