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Input and Output Connections
Refer to Table I for rear panel connections and functions on the 2850 Analyzer; refer also to Figure 4 for
item locations by find number.
Find
Number
Item
1
Sample Inlet Fitting
2
Reference Inlet Fitting (Optional) Input port for separate reference source;
3
Bypass Exhaust Fitting
4
Cell Exhaust Fitting
5
Line Voltage CGB Fitting
6
RS485 Serial Port
7
Analog Outputs
8
Alarm and Alert Terminals
9
Line Voltage Fuse Module
Fuse
10
Ground Lug
11
AC Power In (TB1)
12
Analog Input
3-4 2850 Moisture Analyzer
Table I: Model 2850 Rear Panel Connections
Function
Input port for sample gas;
ting
Vent port for gas bypassing the cell;
Vent port for analyzer cell;
Power cable conduit to wiring box
User serial communications interface
Two 4-20 mA outputs to user recording equipment
Connections for:
See "Electrical Connections" this section
Protects analyzer from input power surges:
Chassis Ground
AC input line and neutral connections
Used for live voltage input from a pressure transmitter. This
is required to output moisture in dew point temperature or
water vapor pressure. Maximum input is 10Vdc
System Alarm
Range/Cal Alert
Concentration/Cal Alert
• 2A for 100/120V, 50/60 Hz, 250V "F" Type
• 1A for 220/265V, 50/60 Hz, 250V "F" Type
/
inch tube fitting
1
8
/
inch tube fit-
1
8
/
inch tube fitting
1
8
/
inch tube fitting
1
8
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