Accelerometers
	Geophones
	Microphones Hydrophones Pressure sensors
	Thermocouples and thermistors
	Load cells
	Hammers and force sensors
	Current and voltage sensors
	Acoustic emission sensors
	RPM sensors
	Displacement sensors
	Eddy current sensors

Online consultants

604427326 - Natalia 388828835 - Maria

Home / Products / Sensors / Current and voltage sensors

Print version

Current and voltage sensors are used to measure high values of currents and voltages when using the DAC and ADC boards and spectrum analyzers that we make.

AC and DC sensors

Current sensors are designed to measure DC, AC and pulse currents without breaking the circuit. We make universal sensors and sensors designed to measure only in AC circuits of industrial frequency (50 Hz). Our wide assortment of models of devices can measure currents from a few milliamperes to tens of kA.

The design of the current sensors includes a magnetic core with a gap and a compensation coil as well as a Hall probe and an electronic signal processing board. The magnetically sensitive Hall probe is fixed in the gap of the magnetic circuit and connected to the input of the electronic amplifier.

When the current being measured flows through the bus enveloped in the magnetic core, magnetic induction is induced in the latter. The Hall probe, which reacts to the magnetic field that emerges, produces a voltage proportional to the magnitude of the induced magnetic induction. The output signal from the sensor gets amplified by the electronic amplifier and fed into a compensation coil. As a result, a compensating current proportional to the current being measured in magnitude and matching its shape flows through the coil. The occurring magnetic field of the compensation coil compensates the magnetic field of the current being measured, and the Hall probe works as a zero-body. Meanwhile, the frequency band allowed through by such a current sensor ranges from 0 Hz (DC) to 200 kHz.

Sensors of constant and variable voltage

Voltage sensors can measure both constant and variable (both single phase and three phase) voltage in the range from zero to 1,000 volts.

Voltage sensors are provided with galvanic isolation from the circuit being measured.