Rosemount 7D, Инструкция по эксплуатации

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3
I
NITIAL
S
TARTUP
748221-L Rosemount Analytical December 2000 19
Model 7D Thermal Conductivity Analyzer
3.1 ANALYZER CONTROLS AND ADJUSTMENTS
Normal operation of the analyzer involves adjustments of only the front-panel controls:
ZERO and SPAN, and RANGE Switch, if provided. See Figure 1-1.
The various internal adjustments are factory set and normally do not require
readjustment except after replacement of a circuit board or major component. Refer
to Section 6, Service and Maintenance.
3.2 GAS SELECTOR PANEL CONTROLS
The controls provided on the optional gas selector panel will depend on the
application. For use of sealed-in reference gas, refer to Figures 2-1 and 2-3. For
flowing reference gas, refer to figures 2-2 and 2-4.
3.3 STARTUP PROCEDURE
If explosive gases are introduced into this analyzer, the sample containment
system must be carefully leak-checked upon installation and before initial
startup, during routine maintenance and any time the integrity of the sample
containment system is broken, to ensure the system is in leak-proof condition.
Leak-check instructions are provided in Section 2.2.3.
Internal leaks resulting from failure to observe these precautions could result in
an explosion causing death, personal injury or property damage.
Note:
Never apply power to analyzer without gas flowing. The filaments in the cell
tend to deteriorate faster than normal.
WARNING: POSSIBLE EXPLOSION HAZARD