JR-6A - Dual speed spinner magnetometer (AGICO)

General Description

The JR-6/JR-6A Spinner Magnetometer consists of an integrated pick-up

and measurement control unit, and a power supply unit. All functions are

microprocessor-controlled. The microprocessor controls measurement,

carries out digital filtration of the signal, controls and tests the speed of

specimen rotation. The JR-6/JR-6A automatically executes tests for

erroneous conditions. The measurement process is fully controlled

by the DPU 1control and data processing unit.

Operating Principles

Rock specimen rotates at a constant angular speed in the pick-up

unit inside a pair of Helmholtz coils. In the coils an AC voltage is

induced who se amplitude and phase depend on magnitude and

direction of the remanent magnetization vector.

Specifications

• Rotation Speed: High 87.7 rps Low 16.7 rps

• Measuring range: up to 12 500 A/m

• Sensitivity: 2 [μA/m] (high speed)

Typical Aplications:

Paleomagnetism, Archaeomagnetism, Magnetometry Mineralogy

Magnetostratigraphy and Rock Magnetism of hard rock and soft

sediments.

Specimen Size::

soft sediments: cubical (max. size = 20 mm on edge);

hard rock: cylinder (diameter = 25.4 mm, length. max. = 22mm).

Reference:

http://www.ascscientific.com/JR6.html

http://www.agico.com/