Teledyne 3060e - Ultra Trace oxygen analyzer - Manual (Page 21)

Teledyne Electronic Technologies
Analytical Instruments
2-11
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• Overall Sample System Design
The design of the sample system minimizes the volume of dead
space, which can retain residual gas from another route or previous
mode of analysis. Dead space contamination is minimized by the
structure of the gas flow routes (Figure 2-4).
Figure 2-4. Flow Schematic
Electronics
The analyzer has an embedded microcomputer, that controls all signal process-
ing, input/output and display functions of the analyzer. System power is
supplied from a power supply module designed to be compatible with any
international power source.
The microcomputer, a liquid crystal display (LCD) and all analog signal
processing electronics are located inside a replaceable control module. A light
emitting diode (LED) display and circuitry to actuate the valves in the sample
are located outside the control module.
Functional groups of analyzer electronics are:
1. Signal Processing
2. Temperature Control
3. Valve Control
4. Power Supply
4
5
2
1
PV
PV
PV
PV
CALIBRATOR
BYPASS
3
PV
7
PV
6
PV
MV3
MV1
MV1
VENT #1 (SAMPLE/SPAN)
VENT #2 (SPARGER)
ULTRA-
TRACE
SENSOR
SAMPLE IN
SPAN GAS IN
1
PV
SHUT-OFF VALVE METERING VALVE
CALIBRATOR
9
PV
MV2
BYPASS VENT (SAMPLE)
OXYGEN SCRUBBER
10
8
H
2
O