PASCO OS-9287B User Manual
Instruction Sheet
for the PASCO
Model OS-9287B
mounting filters
To grounded
115 VAC, 60 Hz or
220V, 50 Hz outlet,
depending upon model.
Sodium Light Source
Rails for
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
TO AVOID ELECTRIC SHOCK
THE POWER CORD PROTECTIVE
GROUNDING CONDUCTOR MUST
BE CONNECTED TO GROUND.
REFER SERVICING T0
QUALIFIED PERSONNEL.
DISCONNECT INPUT POWER
BEFORE REPLACING BULB.
LAMP CONTAINS ELEMENTAL
SODIUM. CONSULT YOUR
MANUAL for replacement and
disposal of bulb.
IMPORTANT
Turn on lamp 20 minutes before
use. Avoid turning lamp on and
off for short periods.
Na
LIGHT
SOURCE
OS-9287
ON
OFF
ON/OFF Switch
012-05364C
DISCONNECT INPUT POWER
BEFORE REPLACING FUSE.
FOR CONTINUED FIRE PROTECTION
REPLACE ONLY WITH 4.0A, 250 V,
TYPE T FUSE, (PER IEC 127-2/III).
LINE VOLTAGE RANGE: 108 - 132 VAC
POWER: 125 W MAX
FREQ.: 47 - 63 HZ
115 VOLTS
FOR CONTINUED FIRE PROTECTION
REPLACE ONLY WITH 2.0A, 250 V,
TYPE T FUSE, (PER IEC 127-2/III).
LINE VOLTAGE RANGE: 198 - 242 VAC
POWER: 125 W MAX
FREQ.: 47 - 63 HZ
220 VOLTS
FOR CONTINUED FIRE PROTECTION
REPLACE ONLY WITH 2.0A, 250 V,
TYPE T FUSE, (PER IEC 127-2/III).
LINE VOLTAGE RANGE: 216 - 264 VAC
POWER: 125 W MAX
FREQ.: 47 - 63 HZ
240 VOLTS
Introduction
The PASCO scientific Model OS-9287B Low Pressure
Sodium Light Source provides 6 candela/cm2, with better
than 99.5% of the visible output in the 5889 and 5895
angstrom spectral lines. The light source comes with a builtin 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 2inch 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.)
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
of 1 part in 104. The sodium pressure in the lamp is 5
microns Hg.
*
589.2 (the average of the
doublet)
Note: Spectral lines
(of very low intensity)
also occur at 497.8,
515.4, and 616.0 nm.
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.
10101 Foothills Blvd. • P.O. Box 619011 • Roseville, CA 95678-9011 USA
Phone (916) 786-3800 • FAX (916) 786-8905 • TWX 910-383-2040
819
300 400 500 600 700 800
wavelength (nm)
© 1994 PASCO scientific
This instruction sheet edited by: Dave Griffith
better
ways to
teach physics
Sodium Light Source 012-05364C
Initial Setup
Before using the Light Source for the first time, you will
need to install the lamp. To do this, just follow the
numbered instructions shown below.
(1) Remove 4 screws
(shown shaded) on top
and bottom panel, then
remove the rear panel.
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
CAUTION:
TO PREVENT THE RISK OF ELECTRIC SHOCK, DO
NOT REMOVE BACK COVER. NO USER SERVICEABLE
PARTS INSIDE. REFER SERVICING TO QUALIFIED
SERVICE PERSONNEL.
The lightning flash with arrowhead, within
an equilateral triangle, is intended to alert
the user of the presence of uninsulated
“dangerous voltage” within the product’s
enclosure that may be of sufficient magnitude to constitute a risk of electric shock to
persons.
➤ ➤
➤
CAUTION--HIGH VOLTAGE: Do not open the light
➤ ➤
source with the unit plugged in.
(2) Align pins to fit
lamp in socket
(4) Reverse procedure
to remove lamp.
Maintenance
The light source lamp, when used correctly (see the note on
the front panel of the unit), can be expected to provide
14,000+ hours of trouble free operation. However, if the
light at any time fails to come on, first check the fuse on the
front of the light source case. If the fuse is not blown, you
may need to replace the lamp. In rare cases, the problem
may be with the ballast. However, ballast replacement
should be performed only by experienced personnel. If the
fuse is intact and replacing the bulb does not restore operation, we recommend you return the unit to PASCO scientific
for repair.
Only the following replacement parts should be used:
Fuse (3.15 amp) 530-033
Fuse (1.6 amp) 530-034
(3) Push up and twist
to mate lamp with
socket.
Item PASCO Part #
Lamp 526-034
The exclamation point within an equilateral triangle is intended to alert the
user of the presence of important operating and maintenance (servicing) instructions in the literature accompanying the appliance.
110 volt Ballast 322-042
220 volt Ballast 322-05440
220 volt Ignitor 550-05441
2
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