Predictive Diagnostics; Table 10-2: Predictive Uses For Test Functions - Teledyne t100 Operation Manual

Teledyne API – T100 UV Fluorescence SO
10.2.

PREDICTIVE DIAGNOSTICS

Table 10-2: Predictive Uses for Test Functions
DAS
TEST FUNCTION
FUNCTION
PRES SMPPRS
DRK PMT DRKPMT
SO
2
CONC1
Concentration
SAMP FL SMPFLW
LAMP RATIO LAMPR
06807F DCN7335
Analyzer
2
The analyzer's test functions can be used to predict failures by looking at trends in their
values (refer to Table 10-2) and by comparing them values recorded for them at the
factory and recorded on the T100 Final Test and Validation Data Form (Teledyne API
P/N 04551) that was shipped with your analyzer.
A convenient way to record and track changes to these parameters is the internal data
acquisition system (DAS) (see Section 7). Also, APICOM control software can be used
to download and record these data for review even from remote locations (Section 7.3
discusses APICOM).
CONDITION
Constant within
sample gas
PMT output Constant within
when UV Lamp ±20 of check-
shutter closed
At span with
IZS option response from
installed
Standard
configuration at
span concentration
Standard
Operation
Standard Stable and near
Operation
BEHAVIOR
EXPECTED ACTUAL
Fluctuating
Slowly
increasing
atmospheric
changes
Slowly
decreasing
Significantly
increasing
out value
Constant
Decreasing
over time
day to day
stable for
Decreasing
constant
over time
Slowly
Decreasing
Stable
Fluctuating
Fluctuating or
Slowly
increasing
100%
Slowly
decreasing
Instrument Maintenance
INTERPRETATION
• Developing leak in pneumatic system
• Flow path is clogging up.
- Check critical flow orifice & sintered filter.
- Replace particulate filter
• Developing leak in pneumatic system to
vacuum (developing valve failure)
• PMT cooler failure
• Shutter Failure
• Change in instrument response
• Degradation of IZS permeation tube
• Drift of instrument response; UV Lamp
output is excessively low.
• Flow path is clogging up.
- Check critical flow orifice & sintered filter.
- Replace particulate filter
• Leak in gas flow path.
• UV detector wearing out
• UV source Filter developing pin holes
• UV detector wearing out
• Opaque oxides building up on UV source
Filter
• UV lamp aging
211