9. Parameter Entries
FlowStar2 LB 514
84
Measurement of one nuclide with two different analog output settings
The measurement of one nuclide in two channels with different windows
may be relevant when
FlowStar²
is integrated into an HPLC system
through an alanlog output signal transfer. This will cause losses in presen-
tation of the result, which are due to the small range of the analog signal
(0-1 V) and the dynamic range (2 decades) of the HPLC system.
FlowStar²
, however, can represent a range of 0-2.5 V at a dynamic range
of about 6 decades.
To get a more accurate presentation of smaller signals and peaks, one
channel can measure and present the results using a lower analog output
setting (e.g. 1.000), the other channel should be set to a high analog output
setting (e.g. 100.000 or 1.000.000) to display the higher intensity peaks
more precisely and avoid an overflow.
Method parameters page 2
METHOD PARAMETERS
2 / 2
Aktive:
x
Nuclide:
H-3
Background [cps]:
0.0
Efficiency [%]:
0.0
Spillover into Ch. 1 [%]:
0.0
Value at 1 V [Unit / V]:
1000
Channel 2
Analog Output
Figure 28: Method parameters page 2
The individual parameters
Channel 2
Proceed as with channel 1.
Analog output
Proceed as with channel 1.
LS pump
Appears only when the LS pump is enabled (see Configuration menu,
parameter page 2, chapter 9.1).
Eluate flow [ml/min]
Standard flow rate: 1ml/min; with preparative samples: 10 ml/min.
LSP flow [ml/min]
Flow rate of scintillator pump (only applies if pump and Z cell are installed)
Start tim
e
Enter the start time for the LS pump.
Stop time
Enter the stop time for the LS pump.