Emerson 755A Manuel D’Utilisation
Instruction Manual
245364-V
May 2002
May 2002
6-4 Service and Maintenance
Rosemount Analytical Inc. A Division of Emerson Process Management
Model 755A
Side View
of Connector
of Connector
Keeper
Connector Pin Removed
Upper Slot
Lower Slot
Connector Pin/
Leads in Place
Leads in Place
Improvised Pin Removal Tool, Such as a Paper Clip
Dual
Photocell
Photocell
ORN
GRY
RED
BLU
BRN
YEL
YEL
Sense
Old Style Lamp
J12
10
18
1
Hole for Source Lamp
When dual photocell is
installed, the gap between
the two photocells should
be in position indicated by
this line.
installed, the gap between
the two photocells should
be in position indicated by
this line.
Optical Bench
10
J12
1
HR2
Suspension
Heater
PUR
GRN
18
BLK
BLK
WHT
WHT
WHT
RT1
Suspension
Terminals
Terminals
A. Connections to Source Lamp and Photocell B. Connections to Suspension and Heater Circuits
C. Removal and Insertion of Pin/Leads in Connector J12
Figure 6-1. Detector/Magnet Assembly
Figure 6-2. Detector/Magnet Assembly Wiring
Dual
Photocell
Photocell
Connector
J12
J12
Lamp Retaining
Set Screw
Set Screw
Photocell
Lock Screws (2)
Lock Screws (2)
Lamp Viewing
Hole
Hole
Source Lamp
Assembly
Assembly
Mounting Screws (2)
Optical Bench Assembly
Detector Assembly
Magnet
Assembly
Assembly
Sample Out-
let Tube
let Tube
Sample Inlet
Tube
Tube
Sample Pre-Heating
Coil
Coil
Connector
Board
Board
A. Detector/Magnet Assembly - Exploded View B. Optical Bench - Exploded View