Wide spectral range solar spectroradiometer
Enviro300 from BenthamComprising a double-spectroradiometer housed within a thermally controlled, environmentally sealed enclosure, the Enviro300 delivers reliable, high-accuracy UV-vis-IR measurements, independent of location or environment.
- Windows control software provides full automation via USB 2.0
- Measurements traceable to Physikalisch-Technische Bundesanstalt (PTB, Germany)
- Two-stage Peltier cooling (and associated fan) assembly are used to stabilise the temperature
- The UV irradiance standard of this system is the Bentham CL7 enclosed Deuterium lamp with its associated 708 power supply
- Full detection electronics suite
Further information
The Enviro300 may be operated unattended via the BenWin+ software suite, recording spectra as often as every five minutes in some of the most inaccessible environments on earth over extended periods.
The system is based around the compact 600mm focal length DTMc300 (280-2500nm) double monochromator, with photomultiplier detection, detection electronics and a choice of input optics.
Core benefits
- Reliable, high-accuracy UV-vis-IR measurements in extremely harsh conditions
- High configurational flexibility turnkey system
- Ruggedised enclosure permits optimal operation regardless of environment
- Auto-generation and delivery of reports
Specifications
Optical layout
| Configuration | Pair symmetrical Czerny Turner monochromators arranged for either additive or subtractive dispersion |
| Focal length | Total focal length: 600mm (additive) |
| Grating mount | Triple grating turret |
| Number of gratings | 1-3 |
| Grating size | 68 x 84mm |
| Aperture ratio | f/4.1 (at all grating angles) |
| Number of entrance/ exit ports | 1 or 2 in both monochromators |
Opto-mechanical
| Mechanical resolution drive | 0.000072°/ step |
| Slit type | Fixed, micrometer or motorised variable |
| Slit width & height | 10µm-10mm (W) x 20mm (H) |
| Filter size | 23/25mm diameter |
Optical performance (quoted for 1200 g/mm grating)
| Spectral range | Within range 200nm-50µm |
| Linear dispersion | 1.35nm/mm (additive) |
| Wavelength accuracy | ± 0.1nm |
| Wavelength reproducibility | ± 0.025nm |
| Resolution full/reduced slit height | 0.15/0.05nm |
| Stray light rejection at 2.5 FWHM | 10-8 |
| Wavelength acquisition speed | 2000nm/s |
Automation
| Computer interface | USB 2.0 |
| Software control | BenWin+ / SDK |
Electrical / mechanical
| Overall dimensions | 634L x 360W x 211H (mm) |
| Optical height | 115mm |
| Weight | 28 kg |
| Power supply | Mains input 110/220V 50/60Hz |
Operational set-up
| Wavelength range | Components | Bandwidth |
| 280-400nm | PMT, 2400g/mm | 0.5 |
| 400-600nm | PMT, 1200g/mm | 1 |
| 600-1100nm | Silicon, 1200g/mm | 5 |
Envirobox specifications
Mechanical & interface
| Thermal control | - Insulated via high density polystyrene walls |
| Electrical and USB connections | - Electrical connection to the elements inside the Envirobox is facilitated via a distribution board fed from an external environmentally sealed plug |
| Fibre bundle connection | - Light is transported from the input optics by a 10m quartz fibre bundle |
Input optics
| Direct solar accessory | Fibre-coupled |
| Two integrating spheres | Fibre-coupled |
Detectors
| Bi-alkali photomultiplier tube (PMT) | (200-~650nm) Requires 215 modular high-voltage PSU |
| Silicon detector | (250- 1100nm) |
| Lead Sulphide (PbS) | (~800-~3000nm) |
Calibration standards
| CL6 | UV-vis-IR 150W quartz halogen irradiance standard, requires 610 PSU |
| CL7 | UV deuterium irradiance standard, requires 708 PSU |
| CL_Hg | UV-vis-IR 1KW irradiance standard |
Detection electronics
| 417 | Detection electronics sub-rack, power supply and display |
| 462 | Relay module |
| 467 | DC current amplifier |
| 215 | High voltage supply |
| 496 | Lock-In amplifier |
| 418M | Chopper control electronics |
| CPS1M | Peltier cooler power supply |
Applications
- Solar irradiance monitoring
- Data input to climate modelling
- Ozone column and aerosol optical depth measurements
Downloads
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Contact
Quantum Design s.r.l.
Via Francesco Sapori, 27
00143 Roma
Italy
| Phone: | +39 06 5004204 |
| Fax: | +39 06 5010389 |
| E-mail: | italy@qd-europe.com |
