Wide spectral range solar spectroradiometer

Enviro300 from Bentham

Comprising 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.

Features
  • 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

Specification

Optical layout

Configuration

Pair symmetrical Czerny Turner monochromators arranged for either additive or subtractive dispersion

Focal length

Total focal length: 600mm (additive)
Individual Units: 300mm

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
- A two-stage Peltier cooling (and associated fan) assembly stabilise the temperature

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

Solar radiation measurement with Enviro

Contact

Staffan Eriksson
Staffan Eriksson

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Contact

Quantum Design GmbH

Roddarestigen 3
SE 182 35 Danderyd
Sweden

Phone:+46 8 41071791
E-mail:nordic@qd-europe.com
Staffan ErikssonSales Manager
+46 8 410 71791
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