NOx Analyzer
Technical principle
The operation principle is based on chemiluminescence method. After absorbing the chemical energy and the reacting with O3, NO is inspired to NO2 of excited state and once it returns to ground state, it will release energy in form of light quantum. The NO concentration can be calculated according to the fluorescence intensity measured by PMT detector.
NOX concentration is measured after converting all the NO2 in the sample gas into NO through the method of the molybdenum conversion.
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Measurement range |
0~500ppb, wide range 0~20,000ppb (optional) |
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Unit |
nmol/mol (ppb), μmol/mol (ppm), μg/m3, mg/m3(optional) |
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Zero noise |
<0.2 ppb(RMS) |
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Detection lower limit |
0.4 ppb |
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Zero drift |
≤1 ppb / 24 hours |
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Span drift |
<5 ppb / 24 hours |
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Response time |
<120s |
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Linearity |
<1%FS |
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Repeatability |
<1% |
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Sampling flow range |
400cm3/min±10% |
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Ambient temperature |
5 ℃ ~ 40 ℃ |
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Dimension |
178 mm×430 mm×635 mm |
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Weight |
<16kg, external pump 5kg |
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Power supply |
200V~240V, 50/60Hz, 400W |
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Analog output |
10V, 5V, 1V, 0.1V (optional) |
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Communication specification |
RS232/RS485 |
Feature
1. Measurement range 0~500ppb to 0~20ppm, user selectable 2.Independent measurement of NO, NO2, NOx 3. Dark current compensation at fixed time, high stability 4. Penetrating drying tank is equipped with the ozone generator 5. Bidirection RS232 port for remote control 6. Adaptive signal filtering technology to optimize response time 7. Large capacity memory, automatic storage of historical data
