3B Scientific U21881 Bedienungsanleitung Seite 3

3B SCIENTIFIC ® PHYSICS
Instruction Sheet
12/08 ALF
1. Safety instructions
Caution. Lamps get hot when they are switched on for
a long period of time.
•
When handling the lamp during the experiment,
use a cloth or other protection.
•
After the experiment leave the lamp to cool.
•
Do not cover the air slits.
•
Do not supply the lamp with an operating voltage
in excess of 12 V.
2. Description
The optical halogen lamp is an ultra-bright light
source for experiments on optical bench and for
projection.
It consists of a metal housing with a built-in
condensing lens and integrated cooling fan. The knob
on the rear for moving the lamp bulb makes it
Optical Halogen Lamp U21881
possible to obtain a parallel light beam. To reduce the
intensity of the light beam, a hole diaphragm can be
attached to the condensing lens by means of a
retaining ring. The handling rod can be unscrewed if
necessary.
Spare halogen lamp, 12 V, 50 W
4. Technical data
Halogen lamp:
Connection:
Condenser focal length:
Condenser diameter:
Rod:
Dimensions:
1
1 Hole diaphragm
2 Rod
3 Condenser
4 Retaining ring
5 Lamp housing
6 Air slits
3. Accessories
12 V, 50 W
4-mm safety jacks
75 mm
45 mm
120 mm x 10 mm dia.
approx. 190 x 125 x 110 mm³
U13735