MTL B-DOT SENSOR

The MTL (Multi-Turn Loop) B-dot sensors measure the time derivative of the magnetic field.

The MTL-2 (A) and MTL-2 (R) sensors are 10-turn B-dot probes utilized in free space measurements that are generally not positioned closer than a few sensor diameters from conducting surfaces. The multi-turn design increases the sensor's sensitivity (equivalent area) over the equivalent diameter MGL-6 sensor. The sensor consists of two identical 5-turn loops in a counterwound configuration. Each of the two loops contains one signal gap. The outputs of the 5-turn loops are connected in series at the sensor output, a TCC-A twinaxial connector.

Resistors connected between the loops damp high-frequency resonances. Axial shorting conductors form an electrostatic shield which minimizes the E-field sensitivity of the sensor.

The output cable can exit either along the cylinder axis (axial version) or from the curved surface of the cylinder (radial version). A gas fitting on the sensor allows the interior to be filled with high dielectric strength gas (such as N2 or SF6) to prevent arcing in intense fields.

Both the MTL-2(ER), pictured above, and the MTL-2(EA) sensors have the same electrical design as the conventional MTL-2 sensors; however, the sensing element is mounted on a plate which can be attached to a conducting surface to provide a measurement of the magnetic field near the surface.

	Vo = = sensor output (in volts)
where
	= sensor equivalent area (in m2)
	= magnetic flux density vector (in teslas)

Data Specification Sheet

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