Model
NOTE
The M200EU with the NOy Option does NOT have equivalency approval, and may not be used for EPA monitoring.
5.1 Calibration or Cal Check Procedure
The calibration of the instrument can be checked or adjusted using gas introduced through the calibration port “CAL IN” on the Bypass Pump Module. The calibration gas is routed to a TEE near the sample inlet port on the remote converter assembly.
Since the zero gas concentration is defined as 0 ppb, it is not necessary to enter the expected zero value. Table 3 details the zero calibration procedure.
Table 3 Manual Zero Calibration Procedure - Zero Gas Through Sample Port
Step | Action | Comment |
Number |
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1. | Press CAL | The M200EU enters the calibrate mode. |
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2. | Wait For Stability | Wait for reading to stabilize at zero value. |
| Typ STB < 0.1 PPB |
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3. | Press ZERO | If you change your mind after pressing ZERO, you can |
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| still press EXIT here without zeroing the instrument. |
4. | Press ENTR | Pressing ENTR actually changes the calculation |
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| equations. |
5. | Press EXIT | M200EU returns to sampling. Immediately after |
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| calibration, data is not added to the DAS averages. |
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16 | 05386 Rev. D |