ThermoFisher Scientific Vanquish VH-D10, Руководство по эксплуатации

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9 • Specifications
Page 176 Vanquish Diode Array Detectors (VH-D10) Operating Manual
Type Specification
Materials in the flow path See the Specifications for the flow cells.
NOTICE For information about the chemical resistance of materials
refer to the technical literature.
Solvent and additive information See section 2.4, page 26 .
Safety features Power-up check of optics, cooling fans, motors and electronics
Leak detection and safe leak handling
Good Laboratory Practice (GLP)
features Predictive Performance functions for scheduling maintenance
procedures based on the actual operating and usage conditions of
the detector.
This includes monitoring of lamp age, lamp ignitions and lamp
intensity.
All system parameters are logged in the Chromeleon Audit Trail.
Temperature reference conditions for noise, drift and linearity specifications
For drift tests, ASTM requires that temperature changes stay below
2 °C/hour over a period of one hour. The drift specification above is
based on these conditions. Larger changes in the ambient temperature
will result in a larger drift.
For best performance, minimize the frequency and the amplitude of
changes in the ambient temperature to 1 °C/hour.
All performance tests should be done with a completely warmed up
optical unit (lamp turned on for more than two hours). ASTM requires
that the detector should be turned on for at least 24 hours before the
testing is started.
TIP LightPipe flow cells may show an increased drift for several hours
after storage, contamination, or if the flow was stopped for some time.
Consider this when testing the drift specification of the detector.
Time constant and response time
According to ASTM E1657-98, the time constant is converted to the
response time by multiplying by the factor 2.2 (i.e., response time =
2.2 x time constant).