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Opsis DOAS Open Path Monitoring Systems
The OPSIS system projects light from an emitter through ambient air to a receiver, which may be up to 2 km away, the light is then transferred to the OPSIS analyser via a fibre optic cable where it is analysed and the concentration of a wide range of compounds determined. The OPSIS system has been designated an Equivalent Method by the U.S. EPA for the monitoring of O3, NO2 and SO2 in ambient air, Traffic tunnels and stack systems. In addition to these gases a wide variety of inorganic and organic gases can also be measured.
Brochure (ambient)
Brochure (stack)
Brochure (Tunnel)
 Opsis Laser Diode Monitoring Systems
The laser diode gas analyser emits light from the internal laser diode to an emitter via a fibre optic cable. A receiver receives the light and distributes the light through a second fibre optic cable back to the laser diode gas analyser The laser diode gas analyser provides very fast monitoring of a range of gaseous compounds. Several gases can be monitored and a multiplexer offers several monitoring paths. Typical compounds are HF, NH3, O2, HCI, H2O, CO, CO2 and temperature.
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 Durag D-R 290 Opacity Monitor
Features:
- In-situ measuring procedure, continuous measurement
- Semi-conductor source with long service life
- Super-wide band diode (SWBD), which provides more stable measuring results in comparison to devices with conventional LEDs
- Measured value display on LC display in opacity, extinction or in mg/m3
- Automatic function tests with correction of measured values in relation to soiling
- Optics and electronics in a hermetically sealed unit - no smoke gas can enter device
- Easy adjustment without additional equipment
- Low-maintenance thanks to optimal purge air conduction
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