PTCal150 Enabling Precision Dosimetry in Phototherapy & PDT

Designed with research-grade optical components, the PTCal150 spectroradiometer enables the highest accuracy data on patient exposure, and provides complete confidence in phototherapy radiometer calibration.

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 type BenFlect precision transmission diffuser (in-line or right angle configuration)
Aperture diameter 10mm
f2’ <1%
Coupling Randomised pure fused silica fibre bundle, from 0.5m long

Monochromator

Monochromator Type Compact double monochromator, additive dispersion. Czerny-Turner mount.
Focal-length 150mm (each unit)
Slits Fixed, interchangeable
Gratings Grating pair, kinematically mounted, 33x33mm
Stray light rejection at 10x FWHM from peak 10-8
Optical Performance/ Configuration 2400 g/mm (UV configuration) 1800 g/mm (UV-Vis configuration)
Spectral range 200-600nm 250-800nm
Typical bandwidth 1, 2 or 5nm 1, 2 or 5nm
Wavelength accuracy ± 0.15nm ± 0.20nm
Wavelength reproducibility ± 0.05nm ± 0.07nm

Detector and Detection System

Detector type S20 photocathode end window photomultiplier tube
Detector High Voltage -750V (adjustable)
Detector response range 200-850nm
Detector dark current (typ.) 500pA
Picoammeter current range Sub 1pA to 100µA
Picoammeter ADC resolution > 14 ½ bit
Picoammeter ADC integration time 100ms

General

Interface USB 2.0
Software control BenWin+ Windows application
Operating System From Windows 7
Minimum HD/ RAM required 100MB/ 256 MB
Overall dimensions Approx. 395L x 315W x 250H (mm)
Power Mains input 110/220V 50/60Hz

Calibration Standard (200-300nm)

Lamp type Deuterium lamp
Nominal lamp power and voltage 30W, 100 V
Operating current 300mA DC
Expected lifetime 2000h
Power Supply PSU_706 deuterium lamp supply
Calibration type and wavelength range Spectral irraidance at 5.5mm from plane of front face, 200-400nm (2nm steps)
Calibration traceability Physicalish Technische Bundesanstalt (PTB, Germany)

Calibration Standard (250-800nm)

Lamp type Halogen lamp
Nominal lamp power and voltage 150W, 24 V
Operating current 6.300 A DC
Expected lifetime 2000h
Power Supply PSU_610 current stabilised lamp power supply
Calibration type and wavelength range Spectral irradiance at 5.5mm from plane of front face, 250-800nm (5nm steps)
Calibration traceability Physicalish Technische Bundesanstalt (PTB, Germany)

Options

PTCal150_0001 PTCal150 spectroradiometer (250-600nm)
PTCal150_0002 PTCal150 spectroradiometer (200-600nm)
PTCal150_0003 PTCal150 spectroradiometer (250-800nm)
PTCal150_0004 PTCal150 spectroradiometer (200-800nm)
PTCal150 measurement data
Typical spectra of sources used in phototherapy and PDT

Ordering Information

PTCal150_0001 PTCal150 spectroradiometer (250-600nm)
PTCal150_0002 PTCal150 spectroradiometer (200-600nm)
PTCal150_0003 PTCal150 spectroradiometer (250-800nm)
PTCal150_0004 PTCal150 spectroradiometer (200-800nm)

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