Table of Contents
Advertisement
Calibration
Equipment Required
Gas Phase Titrator
A gas phase titrator (GPT), such as is included in the Thermo Scientific
Model 146 Series Multigas Calibration System is used to generate NO
2
concentrations from NO concentrations.
Figure 4–1
shows the suggested
placement of the component parts of a gas phase titration apparatus.
Equipment Damage All connections between components in the system
should be made with glass, Teflon®, or other non-reactive material.
▲
Flow Controllers
The airflow controllers should be devices capable of maintaining constant
airflows within
2% of the required flow rate. The NO flow controller
should be capable of maintaining constant NO flows within
2% of the
required flow rate.
Pressure Regulator
The pressure regulator for the standard NO cylinder must have a non-
reactive diaphragm and internal parts, and a suitable delivery pressure.
Figure 4–1. GPT System
Thermo Fisher Scientific
Model 42i Instruction Manual
4-3
Advertisement
Chapters
Table of Contents
Troubleshooting
