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MSA ORION - Page 5

MSA ORION
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WARNING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
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CAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
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WARNING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
Verifying Pump Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
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WARNING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
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WARNING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
Figure 3-3. Pump Alarm on the Display . . . . . . . . . . 3-6
To Clear an Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7
Calibration Check. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7
Diffusion Instrument . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7
Figure 3-4. Instrument with Calibration Cap
Installed . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7
Pumped Instrument (FIGURE 3-5) . . . . . . . . . . . . . . . . . . . . 3-8
Figure 3-5. Pumped Instrument with Calibration
Tubing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8
Measuring Gas Concentrations. . . . . . . . . . . . . . . . . . . . . . . . . 3-9
Combustible gases (% LEL) (FIGURE 3-6) . . . . . . . . . . . . 3-9
Figure 3-6. Instrument in LEL Alarm . . . . . . . . . . . . . 3-9
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WARNING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10
Oxygen Measurements (% O
2
) (FIGURE 3-7) . . . . . . . . . . 3-10
Figure 3-7. Instrument in Oxygen Alarm . . . . . . . . . 3-10
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WARNING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11
Toxic Gas Measurements (FIGURE 3-8) . . . . . . . . . . . . . . 3-11
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WARNING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11
Figure 3-8. Instrument in Toxic Gas Alarm . . . . . . . 3-11
Viewing Optional Displays (see FIGURE 3-9) . . . . . . . . . . . . 3-12
Figure 3-9. Flow Diagram . . . . . . . . . . . . . . . . . . . . . 3-12
Peak Readings (PEAK) (FIGURE 3-10) . . . . . . . . . . . . . . . 3-13
Minimum Readings (MIN) (FIGURE 3-11) . . . . . . . . . . . . . 3-13
Figure 3-10. PEAK Readings on the Display . . . . . 3-13
Figure 3-11. MIN Reading on Display . . . . . . . . . . . 3-13
Short Term Exposure Limits (STEL) (FIGURE 3-12). . . . . 3-14
Table of Contents Operating Manual
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