NOx_CLD_Mastgas_SMR
DMT_BLC_Thermo_42iTL_SMR
operational
🔬 chemiluminescence detector
🏭 Thermo Fisher Scientific
📦 Thermo 42i-TL
S/N 0335003694
📌 http://hdl.handle.net/21.11157/wewpv-epx85
▶ Description
Chemiluminescence detector operated at the observatory platform SMEAR II (Hyytiälä) to perform in-situ measurements of nitrogen oxides (NOx).
▶ 🔧 Inlet System
| Operated in atmospheric simulation chamber | ✗ |
| Measurement height above ground | 34.0 m |
| Measurement height above building | 34.0 m |
| Distance from VOC inlet | 0.0 m |
| Distance from condensables inlet | 5.0 m |
| Distance from ozone inlet | 0.0 m |
| Inlet tube material | PTFE (Teflon) |
| Residence time | 36.0 s |
| Humidity/Temperature control | Outdoors inlet + line heated at 5° C above air temperature; Indoors passive heating from atmospheric to lab temperature |
| Inlet line heating | ✓ |
| Inlet line temperature | 5.0 °C |
| Filter inlet material | PTFE (Teflon) |
| Inlet filter mesh size | 5.0 µm |
▶ ⇄ Converter
| Type | Photolytic |
| Converter manufacturer | Air Quality Design |
| Converter model | Air Quality Design BLC/Custom |
| Converter serial number | 0074 |
| Duration of stay in converter or bypass line | 0.8 s |
| Duration of stay in converter | 0.8 s |
| Temperature | 303.0 K |
▶ 📐 Calibration
| Gas standard concentration | 10.0 µmol/mol |
| Gas standard uncertainty | 0.01 µmol/mol |
| Gas standard confidence interval | 95 % |
| Zero air | Zero Air generator |
| Zero air manufacturer | UHEL |
| Zero air model | UHEL custom build |
NO Calibration
| Type | Cylinder/Dilution |
| Automation | Manual |
| Frequency | 180.0 days |
| NO calibrator manufacturer | Thermo Fisher Scientific |
| NO calibrator model | Thermo Fischer Scientific 146-i |
| NO calibrator serial number | 1205251773 |
NO Certificates (2)
Name: Linde_NOx_2019_SMR
Supplier: Other
Cylinder: 2518627
Valid: 2019-09-19 → 2022-09-18
Applied: 2021-12-14 → 2025-11-19
Name: NPL_NOx_2024_SMR
Supplier: NPL
Cylinder: D180539
Valid: 2024-06-20 → 2026-06-20
Applied: 2025-11-20 → ?
NO₂ Calibration
| Type | GPT |
| Automation | Manual |
| Frequency | 180.0 days |
| NO₂ calibrator manufacturer | Thermo Fisher Scientific |
| NO₂ calibrator model | Thermo Fischer Scientific 146-i |
| NO₂ calibrator serial number | 1205251773 |
NO₂ Certificates (2)
Name: Air Products_NOxGPT_2021_SMR
Supplier: Other
Cylinder: EF38AT2
Valid: 2021-11-17 → 2024-11-16
Applied: 2022-12-13 → 2026-05-18
Name: Linde_NOxGPT_2026_SMR
Supplier: Other
Cylinder: 7523112453217
Valid: 2026-02-18 → 2029-02-16
Applied: 2026-05-19 → ?
▶ 📏 Auxiliary Measurements
| Role | Type | Manufacturer | Model | Serial number |
|---|---|---|---|---|
| Ozone instrument | ultra-violet absorption detector | Thermo Fisher Scientific | Thermo 49i | 1181560008 |
| Meteorology instrument | – | Rotronic | Rotronic HC2-S | – |
| Meteorology instrument | – | Edgetech | – | – |
▶ 📋 Measurement QA/QC
| Instrument log book | Electronic |
| Checklist | 1.0 weeks |
▶ ✅ Data QA/QC
| Time series analysis of calibrations | ✓ |
| Time series analysis of compound ratios | ✗ |
| @VOC@ | ✗ |
▶ 📤 Data Submission
| Database | Submission interval |
|---|---|
| ACTRIS | 1.0 years |
▶ 👤 Operators
| Operator | Level |
|---|---|
| 0000-0001-5019-0904 | expert |