Enviro300 Wide Spectral Range Solar Spectroradiometer

Monochromator Specifications

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

620L x 340W x 205H (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

Overall dimensions

1050L x 760W x 485H (mm)

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 (Refer to Gigahertz Optik documentation.)

*two adaptor plates are provided for attachment of the input optics

 

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

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