Buchi NIRMaster Essential, Operation Manual

Page: 24 / 46

6 | Operation
Büchi Labortechnik AG
24/46 Operation Manual NIRMaster™
6 Operation
6.1 Initializing the instrument
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To start the instrument press the green power button on the left side of the
instrument for 1 – 3 seconds.
ð The indicator light at the housing front will light up yellow, to indicate the
bootup process.
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Switch on the PC with the installed NIRWare software suite.
ð The instrument is ready to log in when the indicator light will change from yellow
to green, after approximately 60 seconds.
6.1.1 System warm-up
When cooled down below working temperature, the spectrometer needs a warm-up
time of approx. 15 min. The warm-up time starts as soon as the instrument is
switched on.
NOTICE! Insufficient warm-up time can influence the quality of
measurement. A longer warm-up time might be required at low environmental
temperature.
6.2 System Suitability Test
NOTE
Frequent tests should be performed to minimize the risk of erroneous
measurements.
The System Suitability Test (SST) serves as an internal functionality and performance
test of the spectrometer. A SST has do be done after each restart of the instrument
to monitor and verify the system performance.
The following SST values are tested:
— Internal system temperatures (e.g. Laser, interferometer, detectors)
— Linearity
— Signal-to-noise ratio
— Wavenumber stability
At the end of each SST a report protocol will be generated. The test results are
compared to values ex factory and inform the user about the system condition.
The report protocol is stored in the internal database for service and quality control
in XML-format..
The time between two SST requests can be set with the NIRWare Application
Designer. The recommended standard value between two tests is 24 hours, a test-
run takes approximately 5 min. If the instrument is used in continuous operation, a
longer checking interval might be suitable.
6.2.1 Temperature tests
The instrument is equipped with a number of sensors to monitor internal
temperatures. Correct operation of the instrument is ensured when the measured
internal temperatures are within specified ranges.
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Check if all actual temperature values are within the limits.