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- TDLAS(Tuneable Diode Laser Absorption Spectroscopy)
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• Specifications
- Optical Path Length: Typically 0.5 - 20 m
- Response time: 1 - 2 sec
- Accuracy: Application dependent
- Repeatability: 1% of range (gas & application specific)
• Environmental conditions
- Operating temperatures: -20 °C - +55 °C
- Storage temperature: -20 °C to +55 °C
- Protection classification: IP66
• Inputs / outputs
- Analog output(1-3): 4 - 20 mA current loop (concentration, transmission)
- Digital output(Optional): TCP/IP, MODBUS, fibre optic
- Relay output (3): High gas, Maintenance warning and fault
- Analog input (2): 4 - 20 mA Process temperature and pressure reading
• Ratings
- Input power supply unit: 100 - 240 VAC, 50/60 Hz, 0.36-0.26A
- Output power supply unit: 24 VDC, 900 - 1000 mA
- Input transmitter unit: 18 - 36 VDC, max. 20W
- 4 - 20 mA output: 500 Ohm max. isolated
- Relay output: 1 A at 30 V DC/AC
• Safety
- Laser class: Class 1 according to IEC 60825-1
- CE: Certified
- EMC: Conformant with directive 2014/30/EU
• Approvals
- IECEx/ATEX zone 1: II 2 G Ex px IIC T5 GB, II 2 D Ex px p IIIC T64°C Db
- IECEx/ATEX zone 2: II 3 G Ex nA nC op is IIC T4 Gb, II 3 D Ex td A22 T100°C
- CSA: Class 1, Div. 2, Groups A, B, C and D; Temp. Code T4; Non-incendive
TUV and MCERTS, GOST approval available for some gases.
• Installation and Operation
- Flange dimension: DN 50/PN10 or ANSI 2"/150lbs(other dimensions on request)
- Alignment tolerances: Flanges parallel within 1.5°
- Purge flow: Dry and oil-free pressurised air or nitrogen 10 -50 l/min(application dependent)
• Maintenance
- Calibration: Check recommended every 12 months
- Validation: In-situ span check with optional internal cell(application dependent)
• Dimensions / Weight
- Transmitter unit: 405mm x 270mm x 170mm, 6.2kg
- Transmitter unit(Ex version): 405mm x 270mm x 310mm, 7.9kg
- Receiver unit: 355mm x 125mm x 125mm, 3.9kg
- Power supply unit: 180mm x 85mm x 70mm, 1.6kg
| Gas | Detection limit |
Min Temp.
|
Max Temp. | Min Pressure | Max Pressure |
|---|---|---|---|---|---|
| NH3 | 0.15ppm | -20°C | 600°C | 0.7BarA | 2BarA |
| HCl | 0.05ppm | -20°C | 600°C | 0.7BarA | 2BarA |
| HF | 0.015ppm | -20°C | 400°C | 0.7BarA | 2BarA |
| H2S | 3ppm | -20°C | 300°C | 0.7BarA | 2BarA |
| O2 | 100ppm | -20°C | 1500°C | 0.7BarA | 20BarA |
| % H2O | 50ppm | -20°C | 1500°C | 0.7BarA | 2BarA* |
| ppm H2O | 0.1ppm | -20°C | 1000°C | 0.7BarA | 2BarA |
| % CO | 30ppm | -20°C | 1500°C | 0.7BarA | 2BarA* |
| % CO2 | 100ppm | -20°C | 1500°C | 0.7BarA | 2BarA* |
| ppm CO | 0.3ppm | -20°C | 1500°C | 0.7BarA | 2BarA |
| ppm CO2 | 1ppm | -20°C | 300°C | 0.7BarA | 2BarA |
| NOx | 10ppm | -20°C | 350°C | 0.7BarA | 2BarA |
| N2O | 1ppm | -20°C | 200°C | 0.7BarA | 2BarA |
| ppm CH4 | 0.2ppm | -20°C | 300°C | 0.7BarA | 3BarA |
| % CH4 | 100ppm | -20°C | 1000°C | 0.7BarA | 3BarA |
| NO2 | 5ppm | -20°C | 200°C | 0.7BarA | 1.5BarA |
| HCN | 0.3ppm | -20°C | 300°C | 0.7BarA | 2BarA |
NOTE: Detection limits are specified as the 95% confidence interval for 1m optical path and gas temperature/ pressure = 25°C / 1 BarA. Measured in N2.
Other gases available on request.
Dual Gas: NH3 + H2O, HCl + H2O, CO + CO2, CO+H2O, CO+CH4, O2 + temp, CO + temp
* Higher pressure available on request for certain gases.
TUV and MCERTS, GOST approval available for some gases.
