The model MSgreen is designed for extremely sensitive measurements of small magnetic fields such as biomagnetic fields of the human heart or brain.
With a field sensitivity of better than 3.5 fT/Hz^1/2 MSgreen is well-suited for these types of applications.

The sensor is housed and sealed inside a cylindrical holder (diameter 1mm, mm high) made of glass fibre reinforced plastic. The sensor chip integrates an heater for de-fluxing.

Summary of important parameters:  

Characteristics
Chip size in mm	7.5×7.5
Magnetometer effective area	Aeff = 2.4 mm²; 1/Aeff =0.86nT/Ф0
Voltage modulation more than, in µV	40
White noise level better than, in µФ0/Hz1/2	4
Working temperature in K	1...5

Three feedback coils available with a mutual inductance of:  

M= 70 pH	30µA/Ф0
M= 40 pH	50µA/Ф0
M= 35 pH	60µA/Ф0