Teledyne GC-Pro/FID - Gas Chromatograph - Manual (Page 17)

GC-Pro FID Introduction
Teledyne Analytical Instruments 3
Flame Ionization Detector (FID) and the column is back flushed to
accept the fresh sample for the next cycle. More information is provided
in Section 2.1 Introduction, under Operational Theory. The electrical
output of the electrometer-amplifier is directly proportional to the
concentrations of the ionizable hydrocarbons present over the ranges of
interest.
1.3 Analyzer Description
The standard analyzer is a rack mountable instrument designed to fit
into a standard 19” instrument rack. The front interface screen is
mounted on the left side of the panel. The right side of the panel
includes the gas controls, pressure gauges and flowmeter. The front
panel is shown in Figure 1-1.
Figure 1-1: GP-Pro Front Panel
Gas pressure gauges and controls are mounted on the front panel
adjacent to the touch screen (human/machine interface abbreviated as
HMI) display as shown in Figure 1-1.
At the rear of the instrument are ports for the introduction of air,
fuel, zero, span, and sample gas as well as vent port connections. Three
50-pin user-interface cable connectors route input/output and alarm
signals to external devices. RS232 and a network port are also available