OPAG

Stand off infrared detector

Automated infrared detection system for real-time remote sensing of atmospheric compounds. Clouds of hazardous emissions from chemical accidents or diffuse emissions from waste disposals can be observed with an operating range of up to several kilometers.

Key features

Several detector options available
Telescopic sight available
Lab Bench top performance in the field
Analysis time less than 10 s
Ethernet connectivity to analysis PC
PC based user interface

Applications

Observation of stack gas plumes
Civil defense and fire brigade operation purpose
Remote sensing of aircraft emissions
Control of diffuse emissions of waste disposals
Fence-line monitoring at chemical factories and stocks
Surveillance of waste disposal facilities
Ambient air monitoring

Technical data

Sensor module

Type:	Michelson type patented ROCKSOLIDTM interferometer
Size:	400mm x 360mm x 270mm
Weight:	18 kg
Power supply:	24 V
Power consumption:	40W (average), 80 W (maximum)
Data interface:	Ethernet connection

Optics

Field of View (FOV):	30 mrad (1.7°) with 4:1 telescope: 7.5 mrad (0.43°)
Optical throughput:	0.0082 sr cm²
f-number:	0.9
Entrance window:	ZnSe
Beam splitter:	ZnSe or KBr
Detector:	DLATGS detector, Liquid nitrogen cooled MCT detector or closed cycle cryo-cooled MCT detector
Spectral resolution:	dv = 1 cm-1 (0.5 cm^-1 optional)
Scan speed:	8 double sided forward backward interferograms per second
At Δv = 4 cm^-1:	8 spectra /s 32 spectra /s with split of interferograms
NEDT* for a single spectrum:	0.02 K at T_b = 30°C and v = 1000 cm^-1
NESR* for a single spectrum:	0.033 mW / (m² sr cm^-1) at T_b = 30°C and v = 1000 cm^-1
Spectral range:	v = 700 - 8000 cm^-1
Internal black body (BB):	Peltier cooled BB: temperature range from dew point up to 80°C (accuracy +/- 0.1 K), stabilized

(*) NEDT: Noise Equivalent Delta Temperature, NESR: Noise Equivalent Radiance calculated from a double sided forward backward interferograms (measurement time 0.125 seconds), narrow band MCT detector