Teledyne 4020 – Hydrocarbon analyzer (special version for automatic background gas switching) - Manual (Page 21)

Total Hydrocarbon Analyzer Introduction
Teledyne Analytical Instruments 3
door which, when opened, allows convenient access to the 4020
electronics. The entire front panel can slide out of the chassis to provide
greater access to the electronics and to the sample system. Gas pressure
and flow controls are mounted on the front panel adjacent to the LED
and VFD displays and user interface.
At the rear of the instrument are ports for the introduction of air,
fuel, zero, span, and sample gas. A single 50-pin user-interface cable
connector contains input/output, background gas switching signals and
alarm signals available to the user. An RS-232 port is also available at
the rear panel for connection to a remote computer or other digital
communication device. The Model 4020 is set up for either 120 VAC 60
Hz or 230 50/60 Hz operation depending on the customer’s
requirements. The appropriate power cord for your unit has been
shipped with this instrument.
1.4 Applications
 Monitoring the purity of oxygen, argon, nitrogen and other
gases in the manufacture of semiconductors and related
equipment.
 Monitoring hydrocarbon contamination in air liquefaction
and other gas production processes.
 Gas purity certification.
 Detecting trace hydrocarbons in ambient air.
 Detecting atmospheric pollutants.
 Cryogenics.
 Monitoring for fuel leakage or toxic solvents.
 Monitoring hydrocarbons in a wide range of process streams.