Connecting The External Column Heaters - Waters 2410 Operator's Manual

• When Polarity 2 is open (not connected), the +/– key on the 2410 front panel or an
IEEE-488 connected data system (such as the Millennium Chromatography
Manager or PowerLine) determines the polarity (see
Guidelines).
• When Polarity 2 is closed (connected to an instrument), Polarity 1 determines peak
polarity. Polarity 1 open (disconnected) generates negative polarity. Polarity 1 closed
(connected) generates positive polarity.
Table 3-10 summarizes the polarity options.
Table 3-10 Polarity Options
Polarity 2
Open
Open
Closed
3
Closed

3.4 Connecting the External Column Heaters

The Waters 2410 Differential Refractometer can control up to two optional external column
heaters through the EXT 1 and EXT 2 ports l on the rear panel of the detector
(Figure 3-16). The ports are standard 9-pin DIN connectors.
58 Making Signal Connections
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Polarity 1 Recorder Polarity
Open No Effect
Closed No Effect
Open Negative (Inverted)
Closed Unchanged
Section 5.2.5, Polarity