C
ONTENTS
748250-L Rosemount Analytical October 1999
v
Model 880A Non-Dispersive Infrared Analyzer
F
IGURES
1-1 Model 880A Detection System .................................................................1-1
2-1 Power Supply Board .................................................................................2-2
2-2 Case Heater Temperature Control Board .................................................2-3
2-3 Cable Gland Connections.........................................................................2-3
2-4 Rear View of Model 880A .........................................................................2-7
2-5 Calibration Gas Control and Alarm Connections ......................................2-8
2-6 Current Output Connections .....................................................................2-9
2-7 Auto Zero/Span Board Connections .........................................................2-10
2-8 Remote Input/Output Board Connections.................................................2-10
3-1 Model 880A Adjustments..........................................................................3-1
3-2 Model 880A Keypad .................................................................................3-3
3-3 Run Mode Display ....................................................................................3-5
3-4 Logic Flow Chart.......................................................................................3-7
3-5 Security Mode...........................................................................................3-8
3-6 Range Mode .............................................................................................3-9
3-7 Diagnostic Mode .......................................................................................3-12
3-8 Linearizer Mode ........................................................................................3-13
3-9 Typical Application Linearization Curve, Linearizer OFF ..........................3-15
3-10 User Determined Linearization Curve (Normalized) .................................3-15
3-11 Alarm Mode ..............................................................................................3-16
3-12 Status Display...........................................................................................3-17
3-13 Current Output Mode ................................................................................3-18
3-14 Auto Zero/Span ........................................................................................3-20
3-15 Remote Input/Output ................................................................................3-22
5-1 Functional Block Diagrams .......................................................................5-2
5-2 Modulation System ...................................................................................5-5
6-1 Cell Replacement .....................................................................................6-3
6-2 Motor/Source Assembly............................................................................6-5
6-3 Detector Replacement ..............................................................................6-8
7-1 Model 880A Assembly ..............................................................................7-3
7-2 Case Heater Temperture Control Assembly .............................................7-4
7-3 Optical Bench ...........................................................................................7-5
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