Ametek 241CE II Operator's Manual page 152

6-38 | Model 241CE II Hydrocarbon Dewpoint Analyzer
These codes indicate that the actual HCDP temperature of the sample
gas is below the Low setpoint temperature of the mirror and that either
the High setpoint temperature is too high or the surrounding ambient
temperature is too low. If the ambient temperature is too low, the heating
of the area around the analyzer may require adjustment, service, or an
upgrade.
To resolve XSCode into its constituent primary codes, subtract the largest
possible primary code (as seen in the "Extended Status Code" trouble-
shooting chart) from the displayed code (which is the total sum of all
primary XSCodes found) and then subtract the next largest possible pri-
mary code, etc., until the remaining value is the smallest possible primary
XSCode. At each step, the primary XSCode being subtracted must not be
larger than the remaining value.
Example 2:
The analyzer is in Standby Mode, the displayed SCode is "125", and the
XSCode is "294". The length of time that the analyzer has been in Standby
Mode is not known. These primary codes are resolved as follows:
First, resolve SCode:
125 Total sum of all primary SCodes found
- 64 f HC Optics [Problem-In-Hydrocarbon-Side-Optical-Path]
61 Remaining sum of all primary SCodes found
f H2O Optics [Problem-In-Water-Side-Optical-Path]
-32
29 Remaining sum of all primary SCodes found
-16 w Dirty Cell [Possible-Cell-Contamination]
13 Remaining sum of all primary SCodes found
-8 w Check XSCode [Advice – Review-Extended-Status-Code]
5 Remaining sum of all primary SCodes found
-4 w No HC DP [Hydrocarbon-Dewpoint-Temperature-Not-Found]
1 w TimeOut [Stage-Time-Out]
Next, resolve XSCode:
294 Total sum of all primary SCodes found
-256 f H2O Dim [Light-Intensity-On-Water-Side-Is-Too-Low]
38 Remaining sum of all primary SCodes found
-32 w High DP [Hydrocarbon-Dewpoint-Temperature-Too-High]
6 Remaining sum of all primary SCodes found
w Cool TimeOut [Cooling-Stage-Time-Out]
-4
2 w Hold TimeOut [Purging/Hold-Stage-Time-Out]