Emerson NGA2000 PMD Manual Do Utilizador

760007-A 

July 2003 

Rosemount Analytical Inc.    A Division of Emerson Process Management                                                  Maintenance and Service    4-1 

Model NGA2000 PMD 

 

 

PRESSURE 
COMPENSATION 
BOARD 

NETWORK INPUT  

DETECTOR 
HOUSING 

CASE 
TEMPERATURE 
SENSOR 

FLOW SENSOR 

COMPUTER 
ANALYSIS BOARD 

MODULE BOARD 

PMD Analyzer components that may require 
replacement include: 

•  All printed circuit board 
•  Thermal fuse inside Detector 
•  Case temperature sensor 
• Flow 

sensor 

• Power 

fuse 

• Detector 
• Module 

fan 

The LED bi-cell assembly source required ad-
justment (rotation) anytime the Detector is 
disassembled.  Refer to Figure 4-3 on page 4-
3 for locations of these components. 

Refer to Figure 4-1 belowfor locations of the 
Signal, Microprocessor, Power Supply and 
(optional) Pressure Compensation Boards. 

All boards are secured to a side of the ana-
lyzer module that folds out while interconnec-
tion wiring is still in place.  Remove the 
securing screws and fold out the entire panel. 

To remove individual boards on the fold-out 
panel, label and unplug all interconnection 
wiring, and remove securing hardware.  Re-
verse this procedure for installation.