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255 NCD
Agilent Technologies 255 NCD Manuals
Manuals and User Guides for Agilent Technologies 255 NCD. We have
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Agilent Technologies 255 NCD manuals available for free PDF download: Operation And Maintenance Manual, Quick Reference Manual
Agilent Technologies 255 NCD Operation And Maintenance Manual (118 pages)
Sulfur and Nitrogen Chemiluminescence Detectors
Brand:
Agilent Technologies
| Category:
Security Sensors
| Size: 3.06 MB
Table of Contents
Safety Notices
2
Table of Contents
11
1 Introduction
17
2 System Description
19
Specifications
20
Technical Information - 355 SCD
20
Technical Information - 255 NCD
20
Physical Specifications
21
Theory of Operation
23
Sulfur Chemiluminescence Detector
23
Nitrogen Chemiluminescence Detector
23
Dual Plasma Controller
24
Description of Major Components
25
Dual Plasma Burner
25
Figure 1. Cross-Section of the Dual Plasma Burner for the 355 SCD
26
Dual Plasma Controller
27
Ozone Generator
28
Chemiluminescence Reaction Cell and Photomultiplier Tube
28
Figure 3. 355 SCD Left Side
29
Figure 4. 355 SCD Right Side
30
Figure 5. 255 NCD Left Side View
31
Figure 6. 255 NCD Right Side View
32
Pressure Transducer
32
Vacuum Pump
32
Chemical Trap
33
Oil Coalescing Filter
33
FID Adapter (Optional)
33
NCD Reaction Cell
33
NCD Photomultiplier Tube and Cooler
34
Figure 7. Schematic for 355 SCD
35
Figure 8. Schematic for 255 NCD, in Nitrogen Mode
36
Figure 9. Schematic for 255 NCD, in Nitrosamine Mode
37
3 Installation
39
Overview
40
Step 1: Selecting a Location
41
Power Requirements
41
Figure 10. Drawing of the Detector with Dual Plasma Burner and Controller
42
Environmental Considerations
42
Combustion Gas Requirements
42
Step 2: Unpack and Inspect the Instrument
45
Required Installation Tools
45
Step 3: Set up the Vacuum Pump
46
Installing the Edwards RV5 Pump Oil-Sealed Vacuum Pump
46
Figure 11. RV5 Oil-Sealed Vacuum Pump and Associated Traps (Front Side)
49
Figure 12. RV5 Oil-Sealed Vacuum Pump and Associated Traps (Back Side)
49
Figure 13. RV5 Oil- Sealed Vacuum Pump and Associated Traps (Top)
50
Figure 14. RV-5 Oil-S Ealed Vacuum Pump Exhaust Line
51
Installing the Welch Dry Piston Vacuum Pump
52
Figure 15. the Welch Dry Piston Pump
54
Figure 16. Oil Drain Kit with Ballast Control
54
Step 4: Connect the Power Cord
56
Step 5: Install the Dry Compressed Air or O 2 Supply
57
Step 6: Install the Signal Output Cables
58
Standard Cable Connection
58
HP 3390 Series Integrator Cable Connection
58
HP 3396 Integrator Cable Connection
58
HP 5890 GC Analog Input Board
58
Agilent 6890 GC Analog Input Board
58
Step 7: Install the Dual Plasma Burner
59
Figure 18. Dimensions of GC Liner Cut-Outs
59
Step 8: Install the Dual Plasma Controller
60
Figure 19. Dual Plasma Controller Rear Panel
60
Step 9: Install Column Connections
61
Capillary Columns
61
Figure 20. Measuring Column Insertion
61
Packed Columns and Columns with an Outside Diameter > 0.8 MM
61
Step 10: Install the Transfer Line
62
4 Front Panel Controls and Initial Startup
63
Detector Front Panel Controls
64
Figure 21. Front Panel Controls
64
Power Controls
64
Display Output Controls
65
Signal Controls
65
Dual Plasma Controller Controls
66
Figure 22. Dual Plasma Controller Front Panel
66
Initial Startup
67
Detector Interface Setup
69
Initial Checkout
69
Monitoring Oxidizer and Hydrogen Flow with the Dual Plasma Controller
70
5 Operation
71
Start-Up Procedure
72
Detector Operation
73
Detector Stability and Response
73
Column Bleed
73
Coking
73
Hydrogen Poisoning
73
Contaminated Gases
74
Fluctuating Pressures
74
Typical Operating Conditions
75
Detection Limits
76
Instrument Shut-Down
77
Daily Shutdown
77
Complete Shutdown
77
Special Operating Modes
78
Using the 255 NCD in Nitrosamine Mode
78
Using the SCD in High Sensitivity Mode for Nonhydrocarbon Gaseous Samples
78
Pump Maintenance
82
Cleaning the Detector
83
Changing the Oil Mist Filter (RV5)
84
Reaction Cell Cleaning
85
Figure 23. Reaction Cell, PMT Housing and PMT Socket
86
Figure 24. Reaction Cell
86
Flow Sensor Calibration
88
Detector Sensitivity
89
Assembling the Dual Plasma Burner for Component Replacement with the SCD
90
Figure 25. Ferrule Placement on Lower Burner Tube
90
Figure 26. Proper Ferrule Orientation to the Large Ceramic Tube
91
Figure 27. Large Ceramic Tube Properly Inserted into the Quartz Heater Assembly
91
Figure 28. Orientation of the Double Taper Ferrule
92
Figure 29. Positioning the Upper Tube in the Union Fitting
92
Figure 30. Tightening the Heater Swivel Nut
93
Figure 31. Proper Alignment of the Burner
93
Assembling the Dual Plasma Burner for Component Replacement with the NCD
95
Figure 32. Ferrule Placement on Lower Burner Tube
95
Figure 33. Proper Ferrule Orientation to the Large Quartz Tube
96
Figure 34. the Quartz Tube Properly Inserted into the Quartz Heater Assembly
96
Figure 35. Burner Assembly Detail
97
Figure 36. Burner Assembly Alignment
97
Tube Replacement for the SCD
98
Figure 37. Orientation of the Double Taper Ferrule
98
Figure 38. Positioning the Upper Tube in the Union Fitting
99
Figure 39. Proper Ferrule Orientation to the Large Ceramic Tube
99
Figure 40. Large Ceramic Tube Properly Inserted into the Quartz Heater Assembly
100
Figure 41. Tightening the Heater Swivel Nut
100
Figure 42. Proper Alignment of the Burner
101
Tube Replacement for the NCD
102
Figure 43. Proper Ferrule Orientation to the Large Quartz Tube
102
Figure 44. Large Quartz Tube Properly Inserted into the Quartz Heater Assembly
103
Figure 45. NCD Tube Replacement Detail
104
Figure 46. NCD Tube Replacement Detail
104
7 Troubleshooting
105
Solving Detector Problems
106
Power Problems
107
Detector Fuse
107
Vacuum Pump Fuse
107
Dual Plasma Controller Fuses
107
Table 4. Fuses for 100 V, 120 V and 230 V Versions of 355 SCD and 255 NCD
108
Figure 47. Fuse Positions on the Power Supply Board
108
Ozone Generation Problems
109
Ozone Generator
109
High Voltage Transformer
109
Plugged Restrictor Lines
110
Response Problems
111
Temperature Reading Problems
112
Diagnosing General Problems
113
Table 5. Troubleshooting Detector Issues
113
Table 6. Troubleshooting Pump Issues
115
Table 7. Troubleshooting Burner Issues
116
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Agilent Technologies 255 NCD Quick Reference Manual (4 pages)
Brand:
Agilent Technologies
| Category:
Security Sensors
| Size: 0.49 MB
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