Teledyne SERIES 4030, HEATED THC manual Applications, Introduction

Introduction

on the customer’s requirements. The appropriate power cord for your unit has been shipped with this instrument.

1.4 Applications

. Monitoring the ambient air for Total Hydrocarbons in chemical and petrochemical plants.

. Fugitive emission monitoring.

. Process emission gases in the chemical industry.

2.1 Introduction

Using a built-in pump, the heated Sample from the Sample Selector Unit is brought to the heated SAMPLE CHAMBER of Model 4030, housing filter cartridge, switching valve and sample loops. Using nitrogen carrier gas and the microprocessor actuated switching valve, a fixed volume of sample, which is collected in Sample Loop, is pushed into the FID detector.

Series 4030 uses a Flame Ionization Detector to sense hydrocarbons. The FID was selected based on the positive performance and extensive experience in the use of this detector in other Teledyne analyzers namely Model 402R and Model 4020. The FID has proven itself to be a rugged, stable, long life sensor giving years of trouble free operation in various applications.

Typically, Model 4030 is calibrated using a known mixture of methane in air, and thus the THC is shown as equivalent ppm methane concentration.

A separate SAMPLE SELECTOR MODULE Unit (optional) may be provided with a heated chamber (120 C Typical) and a manual 3- way valve. This allows the User to connect Sample gas and the Span gas to the back of the Sample Selector Unit and manually select the gas to Model 4030 for analysis. The User must ensure that the Sample gas is kept above the dew point to avoid condensation from the Sample point to its entry into Model 4030.

Teledyne Analytical Instruments 9