200/ 220/ 245 High Accuracy Irradiance Standards0 pages
Gooch and Housego offers
1000-W DXW, 200-W, and
45-W lamps as standards
of spectral irradiance, total
irradiance, illuminance, and
color temperature. These
lamps
have
tungsten
coiled-coil
filaments
enclosed in a small quartz
envelope.
The lamp
OL 200 Calibration
standards can be obtained
Standard
with spectral irradiance
calibrations over all or part of the 250 to 2500 nm
wavelength region. In addition, the 1000-W DXW and
200-W lamps can be calibrated out to 4500 nm.
The spectral irradiance
standards issued by Gooch
and Housego are based on
the National Institute of
Standards and Technology
(NIST) Spectral Irradiance
Scale for the wavelength
range of 250 to 2400 nm
and on a blackbody for the
wavelength range above
OL 220 Calibration
2400 nm. The NIST Scale
Standard
has an uncertainty (k=2) of
0.63% in the visible, 1.56%
in the ultraviolet at 250 nm, and 0.31% in the infrared at
2000 nm.
OL 200, OL 220, and OL 245
High-Accuracy Irradiance
Standards
PERFORMANCE SPECIFICATIONS
1000-W
Spectral Irradiance (nominal) **
@ 250 nm (W/(cm2nm))
@ 1050 nm (W/(cm2nm))
Total Irradiance (nominal mW/cm2)
Illuminance
(nominal footcandles) **
200-W
45-W
2 x 10-8
2.5 x 10-5
30
5 x 10-9
5 x 10-6
6
2 x 10-10
9 x 10-7
1.5
800
170
22
± 1%
± 0.5%
± 1%
± 1-1.5%
± 0.5%
± 1%
± 1-2%
N/A
± 1%
≤ ± 0.06%
/ hr
≤ ± 0.06%
/ hr
< ± 0.06%
/ hr
8.000
6.500
6.500
Transfer Uncertainty *
High-Accuracy
Super High-Accuracy
Uncertainty * - Illuminance
Long Term Photometric Stability
Operating Current (amps DC)
*Uncertainty is relative to NIST Scale at k=2
**Measured at 50 cm
CALIBRATION OPTIONS
1000-W
200-W
45-W
Spectral Irradiance:
250 - 750 nm
OL 200A
OL 220A
OL 245A
750 - 2500 nm
OL 200B
OL 220B
OL 245B
250 - 2500 nm
OL 200C
OL 220C
OL 245C
250 - 1100 nm
OL 200M
OL 220M
OL 245M
OL 245V
380 - 780 nm
Calibration of the 1000-W
DXW and 200-W lamps over
the wavelength range of 250
to 2400 nm are available with
two levels of accuracy: highaccuracy and super highaccuracy. The High-Accuracy
Standards
of
Spectral
Irradiance issued by Gooch
and Housego have a transfer
OL 245 Calibration
uncertainty (k=2) relative to
Standard
the NIST Scale of ± 1-2%. The
Super High-Accuracy Standards have a transfer uncertainty
relative to the NIST Scale of ± 0.5%.
OL 200V
OL 220V
250 - 4500 nm
OL 200IR
OL 220IR
N/A
Total Irradiance
OL 200D
OL 220D
OL 245D
Total and Full Spectral
OL 200H
OL 220H
OL 245H
Illuminance (only)
OL 200P
OL 220P
OL 245P
Color Temperature (only)
OL 200K
OL 220K
OL 245K
Uncalibrated (seasoned)
OL 200U
OL 220U
OL 245U
For illuminance and/or color temperature calibrations in addition to any of the above
calibrations, add the suffix "P" and/or “K" respectively to the appropriate model number.
For super high-accuracy calibrations (1000-W or 200-W) add the suffix "S" to the appropriate
model number.
OPTIONAL ACCESSORIES
1000-W
200-W
Lamp Holder
OL 56
OL 57W
Adjustable Lamp Holder Mount
OL 63
OL 63
Programmable DC Current Source OL 83A
OL 410
45-W
OL 57
OL 63
OL 410
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.
Contact: orlandosales@goochandhousego.com
www.GHinstruments.com
As part of our policy of continuous product improvement, we reserve the right to change specifications at any time
Bulletin 6 / Rev 9-11
Page 1 of 2