Total Spectral Radiant Flux/Total Luminous Flux

605 p.s.u.

TheTSRFx 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).

Bentham offers 2 variants of a 250W rated constant current dc p.s.u. with calibrated current settings for each of the TSRF/TLF standard lamps, models 605 and 607. The latter includes a current ramping facility for lamp switch on and off.

Specification
Units	Model No.	Lamp rating	Power supply current	Typical lumens	Spectral range	Certificate units	Typical sphere diameter
mW/nm	TSRF4	20W	1.666A	480	380-800nm (ext.300-2500nm)	mW/nm	100mm
lm	TLF4	20W	1.666A	480	V/l	lm	100mm
mW/nm	TSRF8	50W	4.000A	1350	380-800nm (ext.300-2500nm)	mW/nm	200mm
lm	TLF8	50W	4.000A	1350	V/l	lm	200mm
mW/nm	TSRF20	100W	8.500A	2800	380-800nm (ext.300-2500nm)	mW/nm	500mm
lm	TLF20	100W	8.500A	2800	V/l	lm	500mm
mW/nm	TSRF1000	100W	8.500A	2800	380-800nm (ext.300-2500nm)	mW/nm	1000mm
lm	TLF1000	100W	8.500A	2800	V/l	lm	1000mm
mW/nm	TSRF1800	250W	10.400A	9000	380-800nm (ext.300-2500nm)	mW/nm	2000mm
lm	TLF1800	250W	10.400A	9000	V/l	lm	2000mm