PTCal150 Enabling Precision Dosimetry in Phototherapy & PDT

Determine warm-up characteristics and gain knowledge of the temporal variation of irradiance to guide the application of phototherapy and PDT.

A compact double monochromator with precision cosine corrected input optic provides excellent stray light performance over a very wide dynamic range, allowing for precise measurement of tungsten filament, LED, metal halide, xenon arc, fluorescent and dichroic sources alongside full-spectrum lamps.

Core benefits

Features

  • Double monochromator-based spectroradiometer with precision transmission cosine diffuser
  • Built-in PMT high voltage supply and dual channel, six-decade picoammeter, offering an impressive dynamic range
  • Flexible fire bundle with optional side or end-view entrance optic to conveniently couple light from the transmission diffuser to monochromator
  • Set in a single, robust housing for ease of transport between clinics and laboratories
  • Windows control software (BenWin+) provides full automation via USB 2.0

Reported Parameters

  • Spectral irradiance 
  • Erythemal irradiance

Entrance Optic

Entrance optic typeBenFlect precision transmission diffuser (in-line or right angle configuration)
Aperture diameter10mm
f2’<1%
CouplingRandomised pure fused silica fibre bundle, from 0.5m long

Monochromator

Monochromator TypeCompact double monochromator, additive dispersion. Czerny-Turner mount.
Focal-length150mm (each unit)
SlitsFixed, interchangeable
GratingsGrating pair, kinematically mounted, 33x33mm
Stray light rejection at 10x FWHM from peak10-8
Optical Performance/ Configuration2400 g/mm (UV configuration)1800 g/mm (UV-Vis configuration)
Spectral range200-600nm250-800nm
Typical bandwidth1, 2 or 5nm1, 2 or 5nm
Wavelength accuracy± 0.15nm± 0.20nm
Wavelength reproducibility± 0.05nm± 0.07nm

Detector and Detection System

Detector typeS20 photocathode end window photomultiplier tube
Detector High Voltage-750V (adjustable)
Detector response range200-850nm
Detector dark current (typ.)500pA
Picoammeter current rangeSub 1pA to 100µA
Picoammeter ADC resolution> 14 ½ bit
Picoammeter ADC integration time100ms

General

InterfaceUSB 2.0
Software controlBenWin+ Windows application
Operating SystemFrom Windows 7
Minimum HD/ RAM required100MB/ 256 MB
Overall dimensionsApprox. 395L x 315W x 250H (mm)
PowerMains input 110/220V 50/60Hz

Calibration Standard (200-300nm)

Lamp typeDeuterium lamp
Nominal lamp power and voltage30W, 100 V
Operating current300mA DC
Expected lifetime2000h
Power SupplyPSU_706 deuterium lamp supply
Calibration type and wavelength rangeSpectral irraidance at 5.5mm from plane of front face, 200-400nm (2nm steps)
Calibration traceabilityPhysicalish Technische Bundesanstalt (PTB, Germany)

Calibration Standard (250-800nm)

Lamp typeHalogen lamp
Nominal lamp power and voltage150W, 24 V
Operating current6.300 A DC
Expected lifetime2000h
Power SupplyPSU_610 current stabilised lamp power supply
Calibration type and wavelength rangeSpectral irradiance at 5.5mm from plane of front face, 250-800nm (5nm steps)
Calibration traceabilityPhysicalish Technische Bundesanstalt (PTB, Germany)

Options

PTCal150_0001PTCal150 spectroradiometer (250-600nm)
PTCal150_0002PTCal150 spectroradiometer (200-600nm)
PTCal150_0003PTCal150 spectroradiometer (250-800nm)
PTCal150_0004PTCal150 spectroradiometer (200-800nm)
PTCal150 measurement data

Ordering Information

PTCal150_0001PTCal150 spectroradiometer (250-600nm)
PTCal150_0002PTCal150 spectroradiometer (200-600nm)
PTCal150_0003PTCal150 spectroradiometer (250-800nm)
PTCal150_0004PTCal150 spectroradiometer (200-800nm)

The Bentham Standard

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Call us on +44 118 975 1355 or email us

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