CAPS Gas Phase monitors
Research-grade instrumentation for accurate and precise continuous monitoring of nitrogen oxides (NO and NO2) using our patented Cavity Attenuated Phase Shift (CAPS) technique.
CAPS Monitors
CAPS monitors are used worldwide in research laboratories and deployed in field campaigns at fixed sites, in mobile laboratories, and on ship and aircraft platforms.
Automated and autonomous operation with minimal maintenance.
CAPS Gas Phase Instruments
CAPS NO2 Monitor
CAPS NO2 Monitor
Accurate and Precise Continuous Monitoring of Nitrogen Dioxide
- Measurement of concentrations from sub-ppbv to 3 or 10 ppmv
- High linearity over measurement range better than 1%
- Direct measurement of analyte; no chemical conversion required
- Essentially interference-free
- Automated and autonomous operation
- Minimal maintenance (periodic change of filter and scrubber)
- No toxic gas emissions
- Customization available
CAPS NOx Monitor
CAPS NOx Monitor
Accurate and Precise Continuous Monitoring of Nitrogen Oxides (NO and NO2)
- Simultaneous dual channel NO2 and NOX (NO by subtraction)
- High linearity over measurement range better than 1%
- Direct measurement of analyte; no chemical conversion required
- Essentially interference-free
- Automated and autonomous operation
- Minimal maintenance (periodic change of filter and scrubber)
- No toxic gas emissions
- Customization available
CAPS NO2 Monitor
| Measurement Specification | Ambient | Fast Response (FR) | Extended Range (EX) |
|---|---|---|---|
|
Range (ppbv) |
0-3,000 |
0-3,000 |
0-10,000 |
|
Resolution (ppbv) |
0.01 |
0.01 |
0.01 |
|
Precision (2σ, 1 s) (ppbv) |
< 0.2 |
< 0.5 |
< 3 |
|
Time Response (10-90%) |
7-8 s |
1-2 s |
1-2 s or 7-8 s |
|
Baseline Drift |
Baselines Taken as Often as Required |
||
|
Span Drift |
Negligible |
||
|
Linearity |
< ± 5 ppbv at 1000 ppbv |
||
|
Flow Rate (lpm) |
0.85 |
1.25 |
0.85 or 1.25 |
CAPS NOx Monitor
| Measurement Specification | NO2 | NOx | NO |
|---|---|---|---|
|
Range (ppbv) |
0-1,000 |
0-1,000 |
0-1,000 |
|
Resolution (ppbv) |
0.01 |
0.01 |
0.01 |
|
Precision (2σ, 1 s) (ppbv) |
< 0.5 |
< 0.5 |
< 1 |
|
Time Response (10-90%) |
1-2 s |
1-2 s |
1-2 s |
|
Baseline Drift |
Baselines Taken as Often as Required |
||
|
Span Drift |
Negligible |
||
|
Linearity |
< ± 5 ppbv at 1000 ppbv |
||
|
Flow Rate (lpm) |
1.25 |
1.25 |
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