Description	In-situ gas analyzer for emission monitoring and process measurement
Measured values	NO, NO2, NH3, SO2
Performance-tested measurands	NO, SO2
Maximum number of measurands	4 (plus process temperature and pressure)
Measurement principles	Differential optical absorption spectroscopy (DOAS)
Measuring ranges NH3 0 ... 30 ppm / 0 ... 2,600 ppm NO 0 ... 40 ppm / 0 ... 1,900 ppm NO2 0 ... 50 ppm / 0 ... 1,000 ppm LowNO2 0 ... 20 ppm / 0 ... 1,000 ppm SO2 0 ... 32 ppm / 0 ... 7,000 ppm Measuring ranges refer to 1 m measuring path Measuring ranges depend on application and device version
Certified measuring ranges NO 0 ... 70 mg/m³ / 0 ... 700 mg/m³ / 0 ... 1,302 mg/m³ SO2 0 ... 75 mg/m³ / 0 ... 1,000 mg/m³ / 0 ... 2,500 mg/m³ With an active measuring path length of 1.86 m (cross- duct), 1.25 m (open path measuring probe) or 1 m (open path measuring probe, LowNO2) The gas-testable measuring probe (GPP) is not TUV approved
Response time (t90)	Open measuring probe (GMP): ≥ 5 s Gas-testable measuring probe (GPP): ≥ 120 s Cross-duct version: ≥ 5 s Response time adjustable
Accuracy NH3 ± 2 % NO ± 2 % NO2 ± 2 % SO2 ± 2 % Relative to the smallest measuring range
Ambient temperature –20 °C ... +55 °C Temperature change maximum ±10 °C/h
Storage temperature –20 °C ... +55 °C Temperature change maximum ±10 °C/h
Ambient humidity ≤ 95 % Relative humidity; non-condensing
Conformities	Approved for plants requiring approval 2001/80/EC (13. BImSchV) 2000/76/EC (17. BImSchV) 27. BImSchV TA-Luft (Prevention of Air Pollution) EN 15267 EN 14181 MCERTS GOST
Ex-approvals IECEx Ex pzc op is [ia] IIC T3 Gc ATEX II 3G Ex pzc op is [ia] IIC T3 Gc
Electrical safety	CE
Mounting	Mounting flange, DN125, PN6 Mounting flange, ANSI, 5″
Test functions	Internal zero point check Check cycle for zero and span point according to QAL3
Options	SCU control unit (for non-hazardous areas only) Multi range calibration (additional measuring ranges for one component) Extended gas temperature range up to 550 °C or 650 °C LowNO2

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