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Getting Started Teledyne API - Model 200EH/EM Operation Manual
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Figure 3-8: M200EM Internal Pneumatic Block Diagram - Standard Configuration
Note:
Pneumatic Diagrams do not reflect the physical layout of the instrument.
The most significant differences between the M200EH and M200 EM versions in regards to pneumatic flow are:
A bypass line leading directly from the bypass manifold to the exhaust manifold is present on the
M200EH, but not in the M200EM.
The Diameter of the critical flow orifice controlling the gas flow into the sample chamber is smaller and
therefore the flow rate of sample gas through the instrument is lower.
See Section 10.3.2 for more information on these differences
See Chapter 5 for or information on the pneumatic flow though instruments with one of the M200Eh/Em’available
options installed.
3.1.3.1. Calibration Gases
Zero Air
Zero air or zero calibration gas is defined as a gas that is similar in chemical composition to the
measured medium but without the gas to be measured by the analyzer, in this case NO and NO
2
. If
your analyzer is equipped with an external zero air scrubber option, it is capable of creating zero air from
ambient air.
04521C (DCN5731)