3B Scientific Fine Beam Tube T - Manual

3B SCIENTIFIC® PHYSICS
1
Operating Unit for Fine-Beam Tube 1009948
Fine-Beam Tube T…1008505
Instruction sheet
05/12 SD/ALF
1. Safety instructions
The operating unit for fine-beam tube conforms to
the safety requirements for electrical equipment
for measurement, control and laboratory use of
DIN EN 61010 part 1 and is classified as belong-
ing to protection class I. It is in-tended for opera-
tion in dry rooms that are suitable for electrical
equipment or installations.
Safe operation of the apparatus is guaranteed
with correct handling. However, safety is not
guaranteed if the apparatus is handled improp-
erly or carelessly.
If it is to be expected that safe operation is im-
possible (e.g., in case of visible damage), the
apparatus is to be rendered inoperative immedi-
ately and to be safe-guarded from unintentional
use.
In schools and training institutions, operation of
the apparatus is to be responsibly supervised by
trained personnel.
While the equipment is in operation, voltages
may be present at the tube socket which are
unsafe to touch.
• Never operate the device without a tube in-
serted.
• Never remove or insert tubes while the
equipment is turned on.
• The instrument may only be connected to the
mains via a socket that has an earth connec-
tion.
• Replace a faulty fuse only with one matching
the specifications stated at the rear of the
housing.
• Disconnect the equipment from the mains
before replacing a fuse.
• Never short the fuse or the fuse holder.
• Never cover the air vents in the housing. This
is necessary in order to ensure sufficient cir-
cula-tion of air required for cooling the inter-
nal com-ponents of the equipment.
Hot cathode tubes are thin-walled, highly evacu-
ated glass tubes. Treat them carefully as there is
a risk of implosion.
• Do not subject the tube to mechanical
stresses.
• Before switching on the anode voltage wait
about 1 minute for the heater temperature to
stabilise.
When the tube is in operation, the stock of the
tube may get hot.
• Allow the tube to cool before putting away the
apparatus.