NOx_CAPS_113_WAL
operational
▶ Description
Cavity attenuated phase shift spectrometer operated at the observatory platform Waldhof to perform in-situ measurements of nitrogen oxides (NOx).
▶ 🔧 Inlet System
| Operated in atmospheric simulation chamber | ✗ |
| Measurement height above ground | 7.02 m |
| Distance from VOC inlet | 0.5 m |
| Distance from ozone inlet | 0.1 m |
| Inlet tube material | PFA /Stainless steel |
| Residence time | 2.0 s |
| Humidity/Temperature control | Temperature controlled |
| Inlet line heating | ✓ |
| Inlet line temperature | 25.0 °C |
| Filter inlet material | PTFE (Teflon) |
| Inlet filter mesh size | 5.0 µm |
▶ 🎯 Zeroing
| Zero air | Internal NO2 scrubber |
| Scrubber | Purafill and charcoal |
| Frequency | 12.0 hours |
▶ 📐 Calibration
| Gas standard concentration | 0.15 µmol/mol |
| Zero air | Zero Air generator |
| Zero air manufacturer | Breitfuss |
| Zero air model | Breitfuss NBS Kompakt |
NO₂ Calibration
| Type | GPT |
| Automation | Automatic |
| Frequency | 25.0 hours |
| NO₂ calibrator manufacturer | Thermo Fisher Scientific |
| NO₂ calibrator model | Thermo Fischer Scientific 146-i |
| NO₂ calibrator serial number | 0714121941 |
NO₂ Certificates (1)
Name: Air Liquide_NOx_2020_WAL
Supplier: Other
Cylinder: D3D1ACE
Valid: 2020-10-05 → 2021-10-05
▶ 📏 Auxiliary Measurements
| Role | Type | Manufacturer | Model | Serial number |
|---|---|---|---|---|
| Ozone instrument | ultra-violet absorption detector | Horiba | Horiba AMCTS3YN | – |
| Meteorology instrument | – | Thies | Thies Kombigerät Climat | 9.5027.20.100 |
▶ 📋 Measurement QA/QC
| Instrument log book | Electronic |
| Checklist | 1.0 days |
▶ ✅ Data QA/QC
| Time series analysis of calibrations | ✓ |
| Time series analysis of compound ratios | ✗ |
| @VOC@ | ✗ |
▶ 📤 Data Submission
| Database | Submission interval |
|---|---|
| EMEP | 1.0 years |
| ACTRIS | 1.0 years |