User`s guide

M3000A/M3046AM3015A/M3016A Service Guide
Testing the Instrument 4-13
This test uses calibration equipment that can be ordered (see "Replacement Parts" for the part
number). The procedure is summarised in the following steps. Refer to the documentation
accompanying the equipment for detailed instructions.
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• Standard tools, e.g. screwdriver, tweezers
• Electronic flowmeter, M1026-60144.
• Gas calibration equipment:
• Cal 1 gas 15210-64010 (5% CO
2
)
• Cal 2 gas 15210-64020 (10% CO
2
)
• Cal gas flow regulator M2267A
• Cal tube 13907A
In addition you will need a local barometric pressure rating received from a reliable local
source (airport, regional weather station or hospital weather station) which is loacted at the
same altitude as the hospital.
The CO
2
calibration for the sidestream Extension consists of the following steps:
• Barometric Pressure Check and Calibration, if required.
• Leakage Check
• Pump Check
• Flow Check and Calibration, if required.
• Noise Check
• CO
2
Cal Check and Calibration, if required.
• CO
2
Cal Verification using 2nd cal gas
127( All steps should be performed in the same session.
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Check the barometric pressure value in the sidestream CO
Extension as follows:
6WHS Go into Service Mode and select CO
2
.
6WHS Connect a FilterLine to the sidestream CO
input. This activates the pump in the
sidestream CO
Extension.
6WHS Check the status line at the bottom of the screen. It will display “CO2 pressure
reading (ambient/cell) xxx/yyy” where xxx is the ambient pressure and yyy is the
measured cell pressure. (The values are displayed with a resolution of 2 mmHg up
to 475 mmHg and a resolution of 1 mmHg from 475 mmHg to 825 mmHg.) Check
whether the ambient pressure value (x1) matches (within the acceptable tolerance
of ±12mm Hg) the reference value you have received . If so, proceed to the Leak-
age Check. If the value is not correct, calibrate as follows.
6WHS Select CO
2
then select Barom.Press. A table of values is activated.
6WHS Select the value in the table which matches the reference value received from a reli-
able local source (airport, regional weather station or hospital weather station).