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Optional Hardware and Software Teledyne API - Model 200EH/EM Operation Manual
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9. Place a shunt between the leftmost two pins of the connector (see Figure 5-1).
6 spare shunts (P/N CN0000132) were shipped with the instrument attached to JP1 on the back of
the instruments keyboard and display PCA
10. Reattach the top case to the analyzer.
11. The analyzer is now ready to have a voltage-sensing, recording device attached to that output
5.5. PARTICULATE FILTER KIT (OPT 42A)
This option includes a one-year supply of 50 replacement, Teflon membrane, particulate filters, 47 mm in
diameter, 1 micrometer pore size. Operation of the particulate filter and weekly maintenance are mandatory on
the M200EH/EM.
5.6. OZONE SUPPLY FILTER (OPT 49)
This filter removes very fine particulates as well as nitric acid, sulfates, nitrates and other compounds from the
ozone supply air stream. The filter is pneumatically connected between ozone generator and reaction cell. The
corona discharge ozone generator produces small amounts of the above mentioned compounds, which may
deposit on the reaction cell walls and – over time – cause drift and non-linear response. Having this filter in line
minimizes these problems and maximizes the reaction cell cleaning intervals. The filter and its maintenance is
shown in detail in Section9.3.3. Refer to Figure 3-1 for location of this optional filter.
5.7. CALIBRATION VALVE OPTIONS
5.7.1. ZERO/SPAN VALVES (OPT 50)
The Model 200EH/EM NO
x
analyzer can be equipped with a zero/span valve option for controlling the flow of
calibration gases generated from external sources. This option contains two solenoid valves located inside the
analyzer that allow the user to switch either zero, span or sample gas to the instrument’s sensor.
The user can control these valves from the front panel keyboard either manually or by activating the instrument’s
CAL or AutoCal features (Section 7.7). The valves may also be opened and closed remotely through the serial
ports
(Section 6.11) or through the external, digital control inp
uts (Section 6.15).
This option also includes a two-stage, external zero air scrubber assembly that removes all NO and NO
2
from
the zero air source (ambient air). The scrubber is filled with 50% Purafil Chemisorbant
®
(for conversion of NO to
NO
2
) and 50% activated charcoal (for removal of NO
2
). This assembly also includes a small particle filter to
prevent scrubber particles to enter the analyzer as well as two more rear panel fittings so each gas can enter the
analyzer separately.
Figure 5-3 & 5-4 shows the internal, pneumatic layouts the zero/span valve option installed for a Model 200EH
and M200EM respectively.
04521C (DCN5731)