Technical data

Operation and Maintenance Manual 13
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
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
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
Table 1. Typical Operating Conditions 75
Detection Limits 76
Table 2. Expected Detection Limits for Chromatographic Conditions 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