3B Scientific Teltron ESR NMR Basic Set User Manual

3B SCIENTIFIC

1000637 (115 V, 50/60 Hz) 1000638 (230 V, 50/60 Hz)

Instruction sheet

06/12 ALF

PHYSICS

ESR/NMR Basic Set

1 Basic unit 1a Sample holder 1b Test probe holder 2 Control console 3 Pair of magnetic coils 4 Plug-in power supply

1. Description

The basic equipment set for ESR/NMR experiments is used in conjunction with the ESR supplementary set (1000640) to investigate electron spin resonance (ESR) in DPPH (diphenyl picryl hydrazyl) and with the NMR supplementary set (1000642) to study nuclear magnetic resonance (NMR) in glycerine, polystyrene and Teflon. Resonances can be observed as a result of transitions induced by high frequencies due to changes in an external magnetic field. Resonance absorption curves can be viewed using a simple dual-channel oscilloscope or with the 3B

NETlog™ unit.

The ESR/NMR basic set numbered 1000637 is designed for 115 V (±10 %) mains voltage supplies, while 1000638 is for 230 V (±10 %).

2. Equipment supplied

1 Basic unit 1 Pair of magnetic coils 1 Control console 1 Plug-in power supply, 12 V AC (230 V, 50/60 Hz)

or 1 Plug-in power supply, 12 V AC (115 V, 50/60 Hz)

The basic unit also has a mechanism for accommodating samples, as well as one for an ESR or NMR test probe (from 1000640 or

1000642) and others for a pair of magnetic coils and a permanent magnet (from 1000642).

The control console provides control and powersupply voltages for the test probe being used and for the pair of coils. It also provides a suitable signal for an oscilloscope and displays the value of the high-frequency signal in Hertz.

The pair of magnetic coils allows an adjustable magnetic field to be generated at the sample location.

3. Control console panel

1 ESR supplementary set 1000640 or 1 NMR supplementary set 1000642

1 Analogue oscilloscope, 2x30 MHz 1002727 2 High-frequency cables 1002746

alternatively

1 3B NETlog™ unit (230 V, 50/60 Hz) 1000540

1 3B NETlog™ unit (115, 50/60 Hz) 1000539 1 3B NETlab™ 1000544

2 High-frequency cables, BNC/4-mm plug 1002748

1 Connection socket for test probe 2 Sensitivity trimmer 3 Sensitivity indicator 4 Frequency selector 5 Frequency display 6 Signal output 7 Magnetic field output 8 Socket for power supply 9 Coil connectors

• For set-up and experiment procedure see

instruction sheets for ESR (1000640) and NMR (1000642) supplementary sets.

• Before cleaning the equipment, disconnect it

from its power supply.

• Use a soft, damp cloth to clean it.

4. Technical data

Basic unit

Di mensions: 165x105x135 mm Weight: 1.25 kg approx.

Magnetic coils

approx.

• The packaging should be disposed of at

local recycling points.

• Should you need to dispose of the equip-

ment itself, never throw it away in normal domestic waste. Local regulations for the disposal of electrical equipment will apply.

Windings: 500 each Magnetic flux density: 0 − 3.37 mT Connectors: Coaxial power connectors Dimensions: 20x74 mm diam. approx. Weight: 0.2 kg approx.

Control console

Probe input: 4-pin Lemo socket Coil connectors: Sawtooth current

source, 0 − 250 mA, 50 ms, pair of co-axial connectors

Magnetic field output: proportional to coil cur-

rent, 0 to 1 V, BNC socket

Signal output: Resonance signal, 0 to

1 V, BNC socket Frequency range: 45 to 75 MHz approx.(ESR) 10 to 15 MHz approx. (NMR) Dimensions: 170x105x45 mm

approx.

Weight: 0.5 kg approx.

5. Additionally required equipment

6. Operation

7. Care and maintenance

8. Disposal

Elwe Didactic GmbH ▪ Steinfelsstr. 5 ▪ 08248 Klingenthal ▪ Germany ▪ www.elwedidactic.com

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

Subject to technical amendments