200/ 245/ 275 TSF & TLF Standards0 pages
Gooch and Housego offers 200-W,
75-W, and 45-W lamps as standards
of total spectral radiant flux and total
luminous flux. These lamps have
tungsten coiled and coiled-coil
filaments enclosed in a quartz
envelope. The lamp standards can
be obtained with total spectral
radiant flux calibrations over the 250
nm to 1100 nm wavelength region.
The total luminous flux is also
provided for the spectral standards.
OL 220 Calibration
Standard
OL 220, OL 275, and OL 245
NIST-Traceable Total Spectral
Radiant Flux and Total Luminous
Flux Standards
PERFORMANCE SPECIFICATIONS
OL 220
OL 275
OL 245
1 x 10-2
1 x 10-1
1.2 x 10-1
1.4 x 10-3
2.5 x 10-2
Not
available
1 x 10-3
1.6 x 10-2
2.5 x 10-2
5200
1000
750
± 2%
± 3%
± 1%
≤ ± 0.06%
/ hr
± 2%
± 3%
± 1%
≤ ± 0.02%
/ hr
± 2%
± 3%
± 1%
< ± 0.06%
/ hr
200-W
6.500
75-W
2.600 **
45-W
6.500
Total Spectral Radiant Flux (typical)
@ 380 nm (W/nm)
@ 650 nm (W/nm)
@ 1100 nm (W/nm)
Total Luminous Flux
(typical)
The total spectral radiant flux
and total luminous flux
standards issued by Gooch
and Housego are based on
the National Institute of
Standards and Technology
(NIST) Total Spectral Radiant
Flux Standard Lamps for the
wavelength range of 360 nm
to 830 nm. Spectral values
provided below 360 nm or
above 830 nm are based on
OL 275 Calibration
NIST FEL 1000-watt Lamp
Standard
Standard
of
Spectral
Irradiance. The NIST Scale
has relative expanded uncertainty (k=2) of ±1.5% at 380
nm, 1.0% at 650 nm, and 0.47% in the infrared at 900 nm.
Spectral Transfer Uncertainty *
380 nm to 780 nm
790 nm to 1100 nm
Uncertainty * -Total Luminous Flux
Long Term Photometric Stability **
Wattage
Operating Current (amps DC)
* Uncertainty is relative to NIST Scale at k=2
** Value shown is for reference only, see Report of Calibration for applicable value
CALIBRATION OPTIONS
Total Spectral Flux
OL 220
OL 275
OL 245
OL 220-TSF-E
250 – 800 nm
OL 275-TSF-E
OL 245-TSF-E
OL 245 Calibration
Standard
Contact: orlandosales@goochandhousego.com
OL 220-TSF-F
OL 275-TSF-F
OL 245-TSF-F
250 – 1100 nm
OL 220-TSF-M
OL 275-TSF-M
OL 245-TSF-M
300 – 780 nm
OL 220-TSF-R
OL 275-TSF-R
OL 245-TSF-R
300 – 1100 nm
OL 220-TSF-T
OL 275-TSF-T
OL 245-TSF-T
380 – 780nm
Calibration of the Total Spectral
Radiant Flux Standards over the
wavelength range of 380 nm to
830 nm have an estimated
transfer uncertainty (k=2) relative
to the NIST Scale of ± 2%. The
transfer uncertainty below 360 nm
or above 830 nm is estimated to
be ± 3% relative to the NIST
Spectral Irradiance Scale
350 - 1100 nm
OL 220-TSF-V
OL 275-TSF-V
OL 245-TSF-V
OL 220-TLF
OL 275-TLF
OL 245-TLF
OL 220U
OL 275U
OL 245U
Total Luminous Flux (only)
Uncalibrated (seasoned)
For color temperature calibrations in addition to any of the above calibrations, add the suffix “K"
respectively to the appropriate model number.
OPTIONAL ACCESSORIES
OL 220
OL 275
39” & 76” dia spheres use ............................................ OL57-T (OL 220)
OL E10-3900 (OL 275)
NOTE: In order to ensure consistent and reliable results, Gooch & Housego (Orlando)
standards should only be used with current sources that possess a ramp current feature.
www.GHinstruments.com
As part of our policy of continuous product improvement, we reserve the right to change specifications at any time
Bulletin 7 / Rev 5-14
Page 1 of 2
OL 245
Precision Current Source ............ OL 410 ............. OL 410 ............. OL 410
Lamp Holders
18” dia spheres use ..................................................... OL 57-S (OL 245)
OL E10-1800 (OL 275)