Instruction Manual

Instruction Manual
748213-S
April 2002
Rosemount Analytical Inc. A Division of Emerson Process Management Contents iii
Model 755R
6-5 Replacement Of Detector/Magnet Components ...................................................................6-5
a. Source Lamp...................................................................................................................6-5
b. Photocell .........................................................................................................................6-5
c. Detector...........................................................................................................................6-7
6-6 Control Board Setup ..............................................................................................................6-7
a. Power Supply Test..........................................................................................................6-7
b. Detector zero...................................................................................................................6-7
c. U4 Zero ...........................................................................................................................6-8
d. U8 Zero ...........................................................................................................................6-8
e. U10 Zero .........................................................................................................................6-8
f. Fullscale ..........................................................................................................................6-8
g. Recorder Fullscale ..........................................................................................................6-8
7-0 REPLACEMENT PARTS ......................................................................................................7-1
7-1 Circuit Board Replacement Policy .........................................................................................7-1
7-2 Matrix – Model 755R Oxygen Analyzer.................................................................................7-2
7-3 Selected Replacement Parts.................................................................................................7-3
8-0 RETURN OF MATERIAL ......................................................................................................8-1
8-1 Return Of Material .................................................................................................................8-1
8-2 Customer Service ..................................................................................................................8-1
8-3 Training..................................................................................................................................8-1
LIST OF ILLUSTRATIONS
Figure 1-1. Model 755R Oxygen Analyzer – Front Panel ........................................................ 1-1
Figure 2-1. Interconnect of Typical Gas Manifold to Model 755R............................................ 2-3
Figure 2-2. Model 755R Rear Panel ........................................................................................ 2-5
Figure 2-3. Connections for Potentiometric Recorder with Non-Standard Span ..................... 2-6
Figure 2-4. Model 755R Connected to Drive Several Current-Actuated Output Devices........ 2-7
Figure 2-5. Relay Terminal Connections for Typical Fail-Safe Applications............................ 2-8
Figure 2-6. Typical Alarm Settings ......................................................................................... 2-10
Figure 2-7. Alarm Relay Assembly Schematic Diagram ........................................................ 2-11
Figure 3-1. Control Board - Adjustment Locations................................................................... 3-3
Figure 3-2. Dial Settings for Alarm Setpoint Adjustments........................................................ 3-7
Figure 4-1. Functional Diagram of Paramagnetic Oxygen Measurement System................... 4-3
Figure 4-2. Spherical Body in Non-Uniform Magnetic Field..................................................... 4-4
Figure 4-3. Detector/Magnet Assembly.................................................................................... 4-7
Figure 5-1. Two-Comparator OR Circuit .................................................................................. 5-2
Figure 5-2. Case Heater Control Circuit................................................................................... 5-3
Figure 5-3. Ramp Generator Circuit......................................................................................... 5-3
Figure 5-4. Detector Heater Control Circuit.............................................................................. 5-6
Figure 5-5. Detector Light Source Control Circuit .................................................................... 5-7
Figure 5-6. Detector with First Stage Amplifier ........................................................................ 5-9
Figure 5-7. Buffer, Anticipation, and Digital Output Circuits................................................... 5-10
Figure 5-8. Simplified Analog Recorder Output Circuit .......................................................... 5-12
Figure 6-1. Detector/Magnet Assembly.................................................................................... 6-3
Figure 6-2. Pin/Lead Removal ................................................................................................. 6-4
Figure 6-3. Detector Optical Bench.......................................................................................... 6-4
Figure 6-4. Lamp Replacement................................................................................................ 6-6