ChromeGate 3.3.2 Software Manual - KNAUER Advanced Scientific ...

158 Creating an Instrument Control Method
The right-handed part of the HPG section allows for direct control of the
pumps, independently from the method setup. Please note, that only %A
can be entered, the %B component of the gradient will be completed
automatically by the software. Only a parameter, the check box is
enabled for, can be edited and the changed value will be send by clicking
the -button.
Flow (Direct Control)
To enter a flow, enable the Flow check box. If enabled, you can enter a
flow, which will be the resulting flow of both pumps. Click on the upper
button (same line as for the Flow and A(%) values) to start the
pumps or change the current flow. If the flow rate is out of the acceptable
flow range, defined by the mounted pump head, an appropriate error
message will be shown. If the check boxes for Flow and A(%) have been
enabled, the values for both will be send to the pumps while clicking the
button. If you wants to update only the flow or gradient, please
disable the A(%) check box.
Click on the button to set the flow rate to 0 (zero).
A(%) (Direct Control)
If the corresponding check box is enabled, you can change the gradient
composition. Enter the desired value for HPG pump A and click on the
upper button (same line as for the Flow and A(%) values) to
send the new gradient composition to the pumps. The program will
complete automatically the value for HPG pump B. If the check boxes for
Flow and A(%) have been enabled, the values for both will be send to
the pumps while clicking the button. If you wants to update only
the A(%), please disable the flow check box.
Pmin / Pmax (only for P4.1S) (Direct Control)
Enter the desired values for the allowed minimum and maximum system
pressure.
Click on the button to send the pressure limits to the pump. If the
pressure limits are out of acceptable pressure range, defined by the
mounted pump head, an appropriate error message will be shown.
UV
The left-handed part of the UV section shows the detector status as
Deuterium lamp status, wave length in nm and signal. The signals unit
depends on the unit selected in the detector’s configuration (AU, mAU,
µAU).
Fig. 234 ASM2.1L status tab – UV
D2 Lamp (Status)
The button shows the current lamp status. The On state is represented
by a green active Light Emission Diode LED symbol ( ), the Off state,
including initializing (heating), is represented by an inactive grey LED
symbol ( ).
WL: (Status)