Closed Loop Hall Sensor

 

Closed-loop Hall current sensor is also called Hall magnetic balancing current sensor. It incorporates the mentioned theory with magnetic balancing theory. In other words, the ferromagnetic field concentrator concentrates the magnetic field generated by primary current and applies it to the Hall component. Then the voltage signal output from Hall component is amplified and becomes the input of power amplifier. The offset current output flows through the secondary compensating coil. The magnetic field generated by secondary coil is opposite to the field generated by primary current. In such way, the primary field is compensated and the Hall output is reduced gradually. When the primary field is equivalent to the secondary one and the offset current keeps stable, it is the magnetic balancing.This circuit mainly consists of electromagnetism conversion component, circuit amplifier and drive compensating circuit.

 

 

 

 

2.1 Outline size of AHBC-LTA

 

 

 

 

 

 

Specification	Rated current	Power supply	Rated output	Measuring aperture (mm)	Precision degree
AHBC-LTA	100～300A	±15V	50mA /100mA	φ 20	0.5
AHBC- LT1005	1000A	±15V	200mA	/	0.5
AHBC-LF	2000A	±15V	400mA	/	0.5

Note: AC and DC input current can be measured, please specify when ordering.

 

 

● Definition of wiring terminals

Note: 1. Analog output GND must be connected with Power Ground.

2. Please select the correct current flow direction.

 

 

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