PP Systems CIRAS-2, Руководство оператора

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Calibration
CIRAS-2 Operator's Manual Version 2.04
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CO
2
Calibration Checking:
Connect a vented T Piece to „REF IN‟ and „AIR OUT‟ on the CIRAS-2. Make sure that nothing is plugged
into the PLC Socket.
If the status values are not OK, check that there is flow from the CO
2
Exhaust (Located on the base of
CIRAS-2). Check also that the ZERO columns are seated properly and the chemicals not exhausted.
H
2
O Calibration Checking:
Connect the lower gas tube of the Water Vapor Calibrator to „REF IN‟, and the upper gas tubes to „REF
OUT‟ and „AN OUT‟. Make sure that the calibrator is plugged in to the PLC Socket.
If the status values are not OK, check that the ZERO columns are seated properly and not
exhausted.
This utility allows checking of system calibrations in a safe and easy way. As with all Calibration and
Stored Diff-Bal processes, the CIRAS-2 should have warmed up for at least 30 minutes. The CO
2
cylinder
should be fresh and the state of the chemicals checked for exhaustion, including Molecular Sieve.
When first started, you will be prompted that a Water Vapor Calibrator may be connected/disconnected at
any time. When using a Water Vapor Calibrator Please Note:
Initially, only make electrical connection so that the CIRAS-2 can confirm that the salts in the Calibrator
are at an acceptable temperature. If the salts are too hot, and ambient air temperature is low, there is a
risk of condensation in the CIRAS-2. If such a warning is issued, ensure that the gas connectors are
disconnected and allow the Calibrator to equilibrate to the ambient air temperature.
The presence of a Water Vapor Calibrator is automatically detected and determines whether you are
checking CO
2
or H
2
O calibrations. After connection/disconnection of the calibrator, wait for the CIRAS-2
to settle.
While
not connected, a prompt will read „No H
2
O Calibrator‟ in the H
2
O area. Otherwise, values and
deviations will be displayed, and the CO
2
area will display „H
2
O Calibration Check‟.
Current Calibration Constants and the Factory Default values may be seen by clicking on the ?
button in the upper right hand cornern of the display. For both CO
2
and H
2
O concentrations, you will be
informed of the deviation from expected of both reference and analysis values and whether the values are
within an acceptable range.
CO
2
checking values are determined by the Blender and the maximum range of the CIRAS-2. H
2
O
checking values are determined by the temperature of the Water Vapor Calibrator and H
2
O concentrations
are set accordingly.