PerkinElmer CLARUS 590 GC, Руководство пользователя

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128 . Clarus 590 GC User’s Guide
NOTE: You may experience high background readings when working with capillary columns. The high background
may be caused by liquid phase bleeding off the detector end of the column (at a typical temperature of 375
°C or higher). In some cases the polyimide coating of the column may also cause a high background
reading when using the ECD.
You can correct this situation by installing a glass-lined receiver (P/N N6000968). The glass-lined receiver
terminates in a 1/16-inch fitting so that it can accept capillary columns with an i.d. of 530 microns or less.
If you suspect that the background is caused by column liquid phase bleeding, install the glass-lined
receiver in the detector base. Then insert the column end just beyond the ferrule and connect it to the
receiver.
If you suspect that the background is caused by the polyimide, insert the column through the glass-lined
receiver until it is flush with the end of the receiver. Then insert the receiver into the detector base. This
shields the column from the make-up gas flow.
Setting up an ECD
To set up an ECD, read the ECD setup summary, then follow the steps.
WARNING
AVERTISSEMENT
To assure that removable radioactive contamination on the external parts
of the ECD remain at a safe level, the United States Nuclear Regulatory
Commission requires that:
•
the ECD is Wipe Tested at least once every six months and
•
a record of the results are maintained for NRC inspection.
Please refer to the Hardware Guide, Maintenance chapter, for the Wipe
Test procedure.
Pour s'assurer que la contamination radioactive amovible sur les parties
externes du DPE reste à un niveau sûr, la Commission de réglementation
nucléaire des États-Unis exige que:
• l'ECD est testé au moins une fois tous les six mois et
• un registre des résultats est maintenu pour l'inspection du CNRC.
Reportez-vous au chapitre Guide de maintenance, maintenance, pour la
procédure de test Wipe.
NOTE: THERMAL RUNAWAY PROTECTION: The Clarus GC software shuts down the GC if any heated zone
exceeds 470 °C. Should this occur, the following error message is displayed:
INSTRUMENT SHUTDOWN
xxxxx THERM RUNAWAY
....where xxxxx is the heated zone.
Call your PerkinElmer Representative.
Instrument shutdown also occurs if there is a PRT (Platinum Resistance Thermometer) or MPU (Micro
Processor Unit) failure. In these cases the following error message is displayed:
INSTRUMENT SHUTDOWN
xxxxx PRT ERROR
....where xxxxx is the failed zone.
Call your PerkinElmer Representative