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Instruction Manual
245364-V
May 2002
Rosemount Analytical Inc. A Division of Emerson Process Management Theory 4-3
Model 755A
Figure 4-2. Functional Diagram of Model 755A Paramagnetic Oxygen Measurement System
Displacement
Torque
Restoring
Torque
Magnet
Platinum/Nickel Alloy
Suspension Ribbon
Balancing
Weight
Balancing Weight
Nitrogen-Filled Hollow Glass
Test Body
Mirror
Titanium Wire Conductor
TEST BODY DETAIL
Electromagnetic
Axis
Electromagnetic
Axis
Restoring
Current
Restoring
Current
Displacement
Torque
Restoring
Torque
CONTROL
ASSEMBLY
DETECTOR/MAGNET
ASSEMBLY
Test Body
Shaded Pole Pieces (4)
Source Lamp
DS1
Restoring
Current
Span
Zero
Dual Photocell
BT1, BT2
% Oxygen
Readout