Options DF-310E 25
under Setup Analyzer Menu, must be used to lockout front panel control
changes.
FILTER
232-GND
485-TX -
UNUSED
485-RX -
232-RX
232-TX
485-TX +
485-RX +
EXT-2 -
EXT+1 -
EXT-2 +
GND (H-)
SE -
SE+ (H+)
SNSR -
SNSR +
J7
UNUSED
TEMP -
TEMP +
UNUSED
UNUSED
LOOP -
J8
A4-NOO
EXT-1 +
FLOW-B
UNUSED
FLOW-A
UNUSED
PUMP +
PUMP -
A OUT -
A OUT +
GND
A4-NC
NUSED
LOOP +
NUSED
J5
SED
RTN
SED
C
J6
J4
A4-COM
UNUSED
A3-NC
A3-NO
D
M
SED
SAMPLE INLET
1/8"COMPRESSION
REGULATOR
Figure 10: Combined Filter/Regulator Assembly
5.10 4-20mA Analog Output
The optional fully-isolated 4-20 mA output is completely isolated from all
other analog outputs and from earth ground. The maximum loop resistance is
1KThe 29-33 VDC compliance voltage is provided. Connections are made
at pins J5-1 (LOOP+) and J5-2 (LOOP-) at the back of the instrument. See
page 45 for additional information.
5.10.1 2-20mA Analog Output
If configured at the time of order, the optional 4-20mA output described
above can be reduced to 2mA when the Sensor is either turned off manually or
turned off automatically due to extended (30 minute) off scale oxygen
readings. Use of this function provides information than could be interpreted
remotely as an alarm or non-standard condition. See page 66 for additional
information on the Sensor Off function.
5.11Relays
Up to four optional form C (SPDT) relays (contact closures) are available to
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