Precision dosimetry in phototherapy & PDT
PTCal150 from BenthamSafe and effective phototherapy and photodynamic therapy (PDT) treatment relies on accurate dosimetry. In hospitals and in clinical research, the PTCal150 sets the benchmark for the precise spectral irradiance measurement of all phototherapy and PDT light sources.
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.
- 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
Further information
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
- High-accuracy spectroradiometry in just a few steps
- Choice of UV / UV-vis configurations tailored to your phototherapy facilities
- Alignment-free calibration standards ensure your link to national metrology standards
- Fully automated measurement process via USB interface
Reported parameters
- Spectral irradiance
- Erythemal irradiance
Specifications
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) |
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Contact
Quantum Design AG
Route du Roule 41
CH-1723 Marly
Switzerland
| Phone: | +41 21 8699-033 |
| E-Mail: | suisse@qd-europe.com |
