Metrohm 732 IC Detector - Manual (Page 113)

4 Operation
732 IC Detector / 733 IC Separation Center
106
4.6.4 key
ZERO OFF
4
The key is used to switch off the auto-zero function. The
auto-zero function can be triggered using the key in the
standby mode or when a program is running, but not in the edit mode.
When the green LED 66 in the key goes out, this shows that
the electronic background compensation is no longer active.
4.6.5 key
MARK
0
The key is used to trigger a marking signal. In addition to the
measuring signal, a signal of ca. 10% of the full-scale range is output-
ted briefly at the analog output. This allows, e.g. the start of a chroma-
togram to be marked during recording on a recorder.
Marking can be triggered with the key in the standby mode
or when a program is running, but not in the edit mode.
4.6.6 key
PUMP R/S
8
The
the 709 IC Pump. A requirement for this is that the 709 IC Pump is
connected to the 732 IC Detector and the remote control is switched on
at the pump with the key (see section 2.6.1).
With the key the pump drive of the 709 IC Pump can be
switched on or off in the standby mode or when a program is running,
but not in the edit mode. When the pump drive is switched on, the red
LED above the key on the pump lights up.
The settings of the pump parameters on the 732 IC Detector 732 are
described under the key in section 4.4.2, the pump status
messages in the standby mode in section 4.3.2.