089770000 Rev 05
Teledyne API 500 CAPS NO
X
Analyzer with NumaView™ Software
11
1.
INTRODUCTION, SPECIFICATIONS, APPROVALS, &
COMPLIANCE
Teledyne API’s Model N500 CAPS NO
x
-NO
2
-NO Analyzer uses Cavity-Attenuated
Phase-Shift (CAPS) spectroscopy to render direct, true measurements of nitrogen dioxide
(NO
2
). By combining direct NO
2
measurements with highly efficient gas phase titration
(GPT), the N500 converts and measures the NO sample gas component as NO
2
, thus
allowing for the measurement of total NOx. Furthering its accuracy and dependability is
an auto-reference cycle to account and compensate for any potential baseline drift in the
measured loss, that may be caused by varying environmental conditions.
CAPS technology is superior to the traditional chemiluminescence method in both speed
and precision since the sampled NO
2
does not require catalytic conversion to calculate a
difference measurement.
Economically, the Model N500 CAPS NO
X
instrument is less costly to operate and
maintain than traditional analyzers in that it uses less power and fewer components.
The section on Principles of Operation provides more detail on the behavior and
technique of the CAPS method for NO
X
measurement.
SPECIFICATIONS
Table 1-1. Specifications
Parameter
Description
Ranges
Min: 0-5 ppb Max: 0-1 ppm NO
x
(full scale user-selectable)
Measurement Units
ppb, ppm, µg/m
3
, mg/m
3
(user-selectable)
Zero Noise
< 0.05 ppb (RMS)
Span Noise
< 0.2% of r 50 ppt (RMS)
Zero Drift
< 0.2 ppb / 24 hours
Span Drift
< 0.5% of reading / 24 hours
Lower Detectable Limit
< 0.1 ppb
Response Time
< 60 Seconds to 95%
Linearity
1% Full Scale
Precision
0.5% of reading above 5 ppb
Sample Flow Rate
1000 cc/min
±
10%
AC Power
Rating
Typical Power Consumption
100 - 240 V~ 47-63 Hz 3.0 A 110 W
Power Entry Module
Fuse
5.0 A, 250 V AC, 5 mm x 20 mm, SLO-BLO
Summary of Contents for N500
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