Hach-Lange Sigma SD900 Portable - Manual (Page 77)

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Appendix A Wiring for non-Sigma flow meters
CAUTION
Only qualified personnel should conduct the tasks described
in this section of the manual.
Prerequisites:
• Multi-purpose half cable
• Auxiliary adapter cable (6-pin to 7-pin adapter)
• Optional splitter ( Figure 15 on page 31 ) to provide additional
connections. Two or more splitters may be connected in series.
See Accessories on page 70 for ordering information.
Procedure:
Use the auxiliary connector diagram in
Figure 28 and wiring
information in Table 8 to wire the flow meter to the controller.
Figure 28 Auxiliary connector (7-pin)
Table 8 Half-cable wiring information for non-Sigma flow meters
Pin
Signal
description Wire
color
1
Purpose Rating
A
12 VDC
power
output
Red
Power supply positive output. Powers
an external device or flow meter. Must
be used in conjunction with pin B
(common).
This output is protected by a thermal current limiter.
12 VDC nominal output at 1 A maximum when using
battery 8754400 to power the sampler.
15 VDC regulated output at 0.5 A maximum when
using AC power to power the sampler.
B Common Black
Power supply negative return. When
using AC power, this pin is connected to
earth ground.