TSRF Total Spectral Radiant Flux
TLF Total Luminous Flux
The TSRF series of total spectral radiant flux standards are designed for use with integrating spheres with diameters ranging from 100mm to 2m.
Standard calibration range is 380-800nm, but this can be extended to cover 300-2500nm range.
The calibration is performed with respect to National Physical Laboratory (NPL Teddington UK) calibrated lamps held by Bentham. Alternatively, direct NPL calibration can be offered.
For non-spectral measurement lamp photometry the lamps can be supplied with total luminous flux calibration (lumens).
The TSRF and TLF require a precision constant current DC power supply and we recommend the Bentham 610 Power supply.