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- TDLAS(Tuneable Diode Laser Absorption Spectroscopy)
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• Specifications
- Optical Path Length: Typically 0.1 - 1 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(3): 4 - 20mA current loop (concentration, transmission)
- Digital output(Optional): TCP/IP, MODBUS, Optional fibre optic
- Relay output(3): High gas, Maintenance, Warning and fault relays(normally closed-circuit relays)
- Input: 4 - 20mA 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 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
• 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 gas or by fan 10 - 50 l/min per flange (application dependent)
2-4 l/min per flange when set up with thin nozzles(optional)
• Maintenance
- Calibration: Recommended every 12 months
- Validation: With optional flow through cell
• Dimensions / Weight
- Transmitter unit: 195mm(plus 65 for purge unit) x 270mm x 170mm, 4.8kg
- Transmitter unit(Ex version): 195mm(plus 65 for purge unit) x 270mm x 310mm, 6.5kg
- Receiver unit: 208mm(plus 65 for purge unit) x 125mm x 125mm, 2.6kg
- 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 | 600°C | 0.7BarA | 2BarA |
% H2O | 50ppm | -20°C | 600°C | 0.7BarA | 2BarA |
ppm H2O | 0.1ppm | -20°C | 400°C | 0.7BarA | 2BarA |
% CO | 30ppm | -20°C | 600°C | 0.7BarA | 2BarA |
% CO2 | 30ppm | -20°C | 600°C | 0.7BarA | 2BarA |
ppm CO | 0.3ppm | -20°C | 600°C | 0.7BarA | 2BarA |
ppm CO2 | 1ppm | -20°C | 300°C | 0.7BarA | 2BarA |
NOx | 10ppm | -20°C | 300°C | 0.7BarA | 2BarA |
N2O | 1ppm | -20°C | 200°C | 0.7BarA | 2BarA |
CH4 | 0.2ppm | -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 and others.
Higher pressure may be available on request for certain gases.