Solar spectroradiometer
Enviro150 from BenthamThe Enviro150 UV Solar Irradiance System comprises a double-spectroradiometer in a thermally controlled, environmentally sealed enclosure to deliver reliable, high-accuracy solar UV measurements independent of its situation.
- Temperature controlled measurement enclosure for outdoor use
- Compact double monochromator based spectroradiometer
- Fibre bundle light transport to spectroradiometer
- Range of entrance optics
- Fully autonomous operation via BenWin+ Windows control software
Further information
A comprehensive software suite permits optimal operation of the Enviro150 locally or whilst unattended, recording spectra up to every five minutes in some of the harshest measurement conditions over extended periods.
The system is based around the compact 150mm focal length DMc150 (280-600/ 300-1100nm) with photomultiplier detection, detection electronics and a choice of input optics.
Core benefits
- Reliable UV measurements in extremely harsh conditions
- High configurational flexibility dependant on application
- Ruggedised enclosure permits optimal operation regardless of environment
- Auto-generation of reports
Specifications
Optical layout
| Configuration | Pair symmetrical Czerny Turner monochromators arranged for additive dispersion |
| Focal length | Total focal length: 300mm |
| Grating mount | Kinematic mount |
| Number of gratings | 1 pair see separate Diffraction Gratings datasheet for full range |
| Grating size | 33x33mm |
| Aperture ratio | f/4 (at all grating angles) |
| Number of entrance/exit ports | 1/2 or 2/1 |
Opto-mechanical
| Mechanical resolution drive | 0.000072°/step |
| Slit type | Fixed, micrometer or motorised variable |
| Slit width & height | 10µm-8mm (W) x 20mm (H) |
| Filter size | 25mm diameter |
Optical performance (quoted for 1200 g/mm gratings)
| Spectral range | Within range 200nm-2500nm |
| Linear dispersion | 2.7nm/mm |
| Wavelength accuracy | ± 0.3nm, ± 0.05nm with software correction |
| Wavelength reproducibility | ± 0.05nm |
| Resolution full/reduced slit height | 0.5/0.1nm |
| Stray light rejection at 2.5 FWHM | 10-8 |
| Wavelength acquisition speed | 30nm/s |
Automation
| Computer interface | USB |
| Software control | BenWin+/SDK |
Electrical / mechanical
| Overall dimensions | 314L x 440W x 189H (mm) |
| Optical height | 128.9mm |
| Construction | Single machined casting |
| Weight | 12 kg |
| Power supply | Mains input 110/220V 50/60Hz |
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
| Optic | Details |
| Bentham D6QA_C | D6QA_C quartz-domed cosine response diffuser, and fibre bundle for measurement of global solar irradiance. |
| Dry air pump | Re-circulates air to prevent condensation on the quartz dome of the diffuser |
Detectors
| Detector | Details |
| Bi-alkali photomultiplier tube (PMT) | (200-~650nm) Requires 215 modular high-voltage PSU |
Calibration standards
| Calibration standard | Details |
| CL7 | UV deuterium irradiance standard, requires 708 PSU |
Detection electronics
| 417 | Detection electronics subrack, power supply and display |
| 487 | Combined current amplifier and analogue-digital converter |
| 215 | Modular, high voltage PSU |
Applications
- Solar irradiance monitoring
- Data input to climate modelling
- Ozone column and aerosol optical depth measurements
Downloads
Contact
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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 |
