PN 305892901, Rev S
Item Function
9 RS-485 Terminator RS-485 Terminator switch is on if the analyzer is the
only analyzer on line or the last in a chain.
12 RS-485 Serial Port User serial communications interface. Serial wiring
supplied by user.
10 Analog Output 4–20 mA output to user recording equipment. Wiring
supplied by user.
11 Alarm Contacts Connections for: Data Valid, Concentration Alarm, and
System Alarm. Wiring supplied by user.
Figure 2-3.
3050-RM Analog Interface
board connections.
ON
ON
TB3
TB2
TB1
ANALOG
OUTPUT
DATA
VALID
CONC
ALARM
SYSTEM
ALARM
OUT
- +
IN
RD TD
+ - + -
LINE VOLTAGE
FUSE
L N G
1 2 3
RS-485
TERMINATOR
1 2 3 4 5 6 7 8 9 10 11 12 13 14
115
230
Line Voltage Selector
Fuse Receptacle
Power Connector
Alarm & Alert Contacts Analog Output
RS-485
Serial Port
RS-485
Terminator
10
9
8
14 13
12
11
2-8 | 3050-RM Moisture Analyzer