PASCO OS-9287B Instruction Sheet

Instruction Sheet
for the PASCO
Model OS-9287B
To grounded
115 VAC, 60 Hz or
220V, 50 Hz outlet,
depending upon model.

Introduction

The PASCO scientific Model OS-9287B Low Pressure
Sodium Light Source provides 6 candela/cm
than 99.5% of the visible output in the 5889 and 5895
angstrom spectral lines. The light source comes with a built-
in power supply so the unit can be powered from a standard
115 VAC, 60 Hz or 220 VAC, 50 Hz outlet, depending
upon the model. Cooling fins and air vents on the sturdy
aluminum case ensure cool, safe operation. The rails on the
front and rear of the case allow easy mounting of standard 2-
inch by 2-inch filters.
To operate the light source, simply plug it into a grounded
115 VAC outlet; then flip the switch on the front of the light
source to On. Allow approximately 20 minutes warm-up
time. (The first time you use your light source, you will
need to install the sodium lamp. See the following page for
Initial Setup instructions.)
Important Note—For maximum lamp life:
1. Always operate the light source in its upright
position. Operation in other orientations will
severely reduce the life of the lamp.
2. If you are going to use the light source more
than once during the day, leave it on. Lamp wear
results more from turning the light source on and
off than from steady operation.
Sodium Light Source
Rails for
mounting filters
2
, with better
10101 Foothills Blvd. • P.O. Box 619011 • Roseville, CA 95678-9011 USA
Phone (916) 786-3800 • FAX (916) 786-8905 • TWX 910-383-2040
ON/OFF Switch
Fuse (3.15 amp, slo-blo for OS-9287B)
(1.6 amp, slo-blo for OS-9287B-220)
The spectrum for the lamp is shown below. Better than
99.5% of the visible output is in the sodium doublet at
5889* and 5895* angstroms. Slight impurities (1% neon
and argon) are added to the sodium gas to improve operating
efficiency. Because of this, the lamp is not recommended
for use with instruments having a resolving power in excess
4
of 1 part in 10 . The sodium pressure in the lamp is 5
microns Hg.
Note: Spectral lines
(of very low intensity)
also occur at 497.8,
515.4, and 616.0 nm.
300 400 500 600
wavelength (nm)
© 1994 PASCO scientific
This instruction sheet edited by: Dave Griffith
012-05364C
*
589.2 (the average of the
doublet)
819
700 800
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