Technical data
Table Of Contents
- Contents
- Introduction
- System Description
- Installation
- Overview
- Step 1: Selecting a Location
- Step 2: Unpack and Inspect the Instrument
- Step 3: Set Up the Vacuum Pump
- Step 4: Connect the Power Cord
- Step 5: Install the Dry Compressed Air or O2 Supply
- Step 6: Install the Signal Output Cables
- Step 7: Install the Dual Plasma Burner
- Step 8: Install the Dual Plasma Controller
- Step 9: Install Column Connections
- Step 10: Install the Transfer Line
- Front Panel Controls and Initial Startup
- Operation
- Maintenance
- Pump Maintenance
- Cleaning the Detector
- Changing the Oil Mist Filter (RV5)
- Reaction Cell Cleaning
- Flow Sensor Calibration
- Detector Sensitivity
- Assembling the Dual Plasma Burner for Component Replacement with the SCD
- Assembling the Dual Plasma Burner for Component Replacement with the NCD
- Tube Replacement for the SCD
- Tube Replacement for the NCD
- Troubleshooting
- Index
74 Operation and Maintenance Manual
Contaminated Gases
The use of clean gases for the 355 SCD is essential for optimal performance.
High purity gases (99.999% pure or better) are advised. Sulfur and other
contaminants from gases may accumulate in the column and bleed out over
time desensitizing the tubes and causing elevated baselines. The use of sulfur
traps is highly recommended for all gases.
Fluctuating Pressures
Fluctuations in pressure, especially from gas generators, will affect Detector
response. It is therefore recommended that only bottled gases equipped with a
dual stage regulator or appropriate steps to ensure stable pressure supplies
are used.