Tracerco Optimus T221, Руководство по эксплуатации

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MD1064 Rev. F 20 of 32
• Solids build up on the vessel wall
• Variations in pressure.
6.2.1.2 Device Variable 1 – Maximum Build Up
Optimus™ is capable of providing an up to date indication of solids build up on the vessel
wall for stages that are in the gas phase. This Device Variable reports the value of the
stage with the maximum build up present.
6.2.1.3 Device Variable 2 – Elevation of Maximum Build Up
Optimus™ is capable of providing an up to date indication of solids build up on the vessel
wall for stages that are in the gas phase. This Device Variable reports the elevation of the
centre of the stage with the maximum build up present.
6.2.1.4 Device Variable 3 – Average Gas Phase Build Up
Optimus™ is capable of providing an up to date indication of solids build up on the vessel
wall for stages that are in the gas phase. This Device Variable reports the average build-
up of all stages currently in the gas phase.
6.2.1.5 Device Variable 4 – Average Total Build Up
Optimus™ is capable of providing an up to date indication of solids build up on the vessel
wall for stages that are in the gas phase. This Device Variable reports the average build-
up of all stages.
6.2.1.6 Device Variable 5 – Process Level by Traditional Calculation
This Device Variable provides the process level as it would have been reported using
traditional nucleonic calculation. This level is NOT resistant to:
• Solids build up on the vessel wall
• Variations in pressure
6.2.1.7 Device Variable 6 – Radiation Source Strength
Radiation sources decay with time. The amount of decay is related to the radio nuclide.
This Device Variable reports the source strength as a percentage of its strength at the
calibration date.
6.2.1.8 Device Variables 7-78 – Normalised Stage Count Rates
Optimus™ supports up to 72 stages. Each stage has a count rate between 0 and 1 which
represents the amount of radiation incident on that stage. These normalised count rates
are represented by these Device Variables.
Device Variable 7 represents Stage 1, Device Variable 8 represents Stage 2 and so on.
If a particular stage does not exist for the current device configuration then a value of 0
is returned.