Hardware Installation and Maintenance Manual iii
LIST OF FIGURES
Figure 1–1. Schematic of a typical tunable diode laser absorption
spectrometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
Figure 1–2. Typical raw signal from a laser diode absorption spectrometer
with and without mirror contamination . . . . . . . . . . . . . . . . . . . . 1-7
Figure 1–3. Typical normalized absorption signal from a laser diode
absorption spectrometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
Figure 1–4. Typical normalized 2
f signal; species concentration is
proportional to the peak height . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
Figure 1–5. External features of the analyzer . . . . . . . . . . . . . . . . . . . . . . . . 1-9
Figure 1–6. Upper and lower levels of analyzer assembly
(8/28 m sample cell). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10
Figure 1–7. Upper and lower levels of analyzer assembly
(0.8 m sample cell). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11
Figure 1–8. Upper and lower levels of analyzer assembly
(0.1 m sample cell). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12
Figure 1–9. Components on electronics panel assembly (Upper level) . . . . . . 1-13
Figure 1–10. Components on sample cell panel assembly
(8/28 m sample cell) (Lower level) . . . . . . . . . . . . . . . . . . . . . . 1-14
Figure 1–11. Components on sample cell panel assembly
(0.8 m sample cell) (Lower level) . . . . . . . . . . . . . . . . . . . . . . . 1-15
Figure 1–12. Components on sample cell panel assembly
(0.1 m sample cell) (Lower level) . . . . . . . . . . . . . . . . . . . . . . . 1-16
Figure 1–13. Label placement on exterior of enclosure . . . . . . . . . . . . . . . . . . 1-20
Figure 1–14. Label placement on electronics panel assembly
(Upper level) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-21
Figure 1–15. Label placement on sample cell panel assembly
(8/28 m sample cell) (Lower level) . . . . . . . . . . . . . . . . . . . . . . 1-22
Figure 1–16. Label placement on sample cell panel assembly
(0.8 m sample cell) (Lower level) . . . . . . . . . . . . . . . . . . . . . . . 1-23
Figure 1–17. Label placement on sample cell panel assembly
(0.1 m sample cell) (Lower level) . . . . . . . . . . . . . . . . . . . . . . . 1-24
Figure 3–1. Basic differential system with two solenoid valves. . . . . . . . . . . . . 3-5
Figure 3–2. Preferred basic differential system with one solenoid
valve driving two pneumatic valves. . . . . . . . . . . . . . . . . . . . . . . 3-6
Figure 3–3. Differential system with single autovalidation requiring
two solenoid valves driving three pneumatic valves . . . . . . . . . . . 3-7
Figure 3–4. Differential system with dual autovalidation requiring
four solenoid valves driving eight pneumatic valves . . . . . . . . . . . 3-8
Figure 3–5. Enclosure door - inside view. . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12
Figure 3–6. Field interface terminal block for connection of input
power and input/output signals . . . . . . . . . . . . . . . . . . . . . . . . 3-14
Figure 3–7. Applying lubricant to threads . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15
Figure 3–8. Optically isolated RS-232-to-RS-485 converter DIP switches . . . . 3-19
Figure 3–9. Analyzer 4-20 mA board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-21
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