3B Scientific Teltron Tube Holder D User Manual

3B SCIENTIFIC

Instruction sheet

07/12 ALF

PHYSICS

Tube Holder D 1008507

1 Base plate 2 Holes for inserting Helm-

holtz coils 3 Stanchion 4 Clamping jaws for tubes 5 Retaining slider 6 Fork 7 Stock for tubes and opti-

cal analogue equipment

1. Safety instructions

When operating tubes, the terminals may be live to high voltages that are dangerous to touch.

 Do not modify circuits unless all power sup-

plies are turned off.

 Do not mount or remove tubes unless all

power supplies are turned off.

2. Description

The tube holder accommodates all tubes of the series D and their accessories, such as the Helmholtz Coils D (100644) and Auxiliary Coil (100645) plus the Optical Analogue equipment (1000656).

The tube holder consists of a robust base plate with an upright stanchion and a fork-shaped holder for hot cathode tubes that can be rotated by 360° and is made of heat-resistant, highly insulating plastic. The tubes are secured into sprung clamps with retaining sliders. Two holes are bored in the base plate to accommodate a pair of Helmholtz coils at the “Helmholtz separation distance” for generating a uniform magnetic field. The tube holder rests on three non-slip rubber feet.

3. Technical data

Dimensions: 230x175x320 mm3 approx. Separation of

holes for coils: 76 mm approx. Weight: 1.5 kg approx.

4. Operation

4.1 Setting up and removing hot cathode tubes

 Tubes should not be mounted or removed

unless all power supplies are disconnected.

 Push the jaw clamp sliders on the stanchion

of the tube holder right back so that the jaws open.

 Push the bosses of the tube into the jaws.  Push the jaw clamps forward on the stan-

chions to secure the tube within the jaws.

 To remove the tube, push the jaw clamps

right back again and take the tube out of the jaws.

4.2 Setting up the Helmholtz coils D (100644)

 Place the tube in the holder as described

above.

 Insert the Helmholtz tubes into the holes

with the connections facing outwards. Push the sleeves on the rod upwards and insert the rod at an angle.

 Push the sleeves into the holes to secure

the coils.

4.3 Setting up the auxiliary coil (1000645)

 Place the coil on the upper fork.  Push the retaining slider over the lip of the

auxiliary coil to secure the coil in place.

4.4 Setting up the optical analogue equipment (1

 Insert the aluminium disc with the grating

000656)

into the stanchion from behind.

Fig. 1 Setting up a tube (left), a tube, the Helmholtz coils and the auxiliary coil (right)

3B Scientific GmbH • Rudorffweg 8 • 21031 Hamburg • Germany • www.3bscientific.com

Subject to technical amendments