Emerson Process Management NGA2000 HFID 用户手册

748297-E 

June 2003 

Rosemount Analytical Inc.    A Division of Emerson Process Management  

Maintenance  and Troubleshooting     4-17 

Model NGA2000 HFID 

 

1.  Per Section 4-2e on page 4-13, re-

move securing hardware from elec-
tronics assembly and lay on bench.  

2.  Disconnect and note location of ca-

bles. 

3.  Remove the two screws and washers 

from the top bracket and slide the 
preamp assembly out. 

4.  Remove the lower bracket from the 

preamp assembly and install on re-
placement preamp assembly. 

5.  Slide replacement preamp assembly 

into top bracket and secure with 
mounting hardware. 

6. Re-connect 

cables. 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

 

Bottom Bracket 

Top Bracket 

Preamp Assembly 
656945