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Current sensors

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Hall sensor AH49E - Waveshare 9522

Module with Hall sensor with analog and digital output. It works with voltage from 2.3 V to 5.3 V. It provides the detection of a magnetic field.
Index: WSR-04494
Index: WSR-04494
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Regular price €3.47 Price €3.47

AC current sensor SCT 013-030 - up to 30A

The sensor measures the intensity of the current flowing in the cable without its opening. Measurement occurs through the insulation on a single wire, the output is the analog...
Index: MOD-04273
Index: MOD-04273
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Regular price €8.03 Price €8.03

ACS711EX current sensor ACS711EX -15A to + 15A - Pololu 2452

Current sensor working in the range of +/-15 A based on the Hall effect. The output is an analog voltage. Supply voltage is from 3.0 V to 5.5 V.
Index: PLL-01690
Index: PLL-01690
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Regular price €4.97 Price €4.97

Voltage divider 5V/25V for Arduino

A voltage divider is used, when the measured voltage has a larger value than the A/D converter's range. The device works in the range from 0 V to 25 V. The output voltage has a...
Index: MOD-08231
Index: MOD-08231
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Regular price €0.76 Price €0.76

ACS711EX current sensor -31A do +31A - Pololu 2453

Current sensor working in the range of +/- 31 A, based on the Hall effect. The output is an analog voltage. Supply voltage is from 3 V to 5.5 V.
Index: PLL-01689
Index: PLL-01689
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Regular price €5.84 Price €5.84

Module with Hall sensor, magnetic field

Module with Hall sensor, analog magnetic switch. It allows for the detection of the magnetic field. The module has no soldered passive elements. It works with voltage of 5 V.
Index: OST-14290
Index: OST-14290
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Regular price €1.24 Price €1.24

DFRobot Gravity: Analog AC Current Sensor SCT 013-020 - to 20A

The sensor measures the intensity of the current flowing in a pipeline without its opening. Measurement occurs through the insulation on a single wire, and the output is the...
Index: DFR-06932
Index: DFR-06932
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Regular price €23.65 Price €23.65

ACS714 current sensor -30A to + 30A - Pololu 1187

Current sensor operating in the range of +/- 30 A, based on the Hall effect. The output is analog voltage. Supply voltage from 4.5 V to 5.5 V.
Index: PLL-00524
Index: PLL-00524
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Regular price €14.08 Price €14.08

Module with Hall sensor - Iduino SE014

The module with the Hall sensor, the detection range of the magnetic field is regulated with the potentiometer. It has a built-in digital and analog connector. Powered with the...
Index: OST-14293
Index: OST-14293
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Regular price €1.71 Price €1.71

ACS712 current sensor - 20A

The module with ACS712 current sensor. It allows you to measure current from 0 A to 20 A for both AC and DC, basing on Hall effect. The system's sensitivity is 100 mV/A. It is...
Index: OST-14275
Index: OST-14275
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Regular price €4.32 Price €4.32

DFRobot Gravity: Analog 20A Current Sensor

Current sensor operating in the range up to 20 A and up to 311 Volts on the basis of the Hall effect. The output is an analog voltage. The supply voltage is 5 V.
Index: DFR-08367
Index: DFR-08367
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Regular price €10.83 Price €10.83

iNode Energy Meter - energy consumption monitor - magnetometer

iNode Energy Meter with a magnetic field sensor is a wireless power consumption monitor with built-in memory. Designed mainly for home automation. Thanks to the power...
Index: INO-09930
Index: INO-09930
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Regular price €28.19 Price €28.19

DFRobot Gravity v2.0 - I2C Digital Wattmeter

A module that allows you to measure electric energy consumption of up to 26 V / 8 A. The maximum measurement error is approx. 0,2%. It communicates through an I2C interface. It...
Index: DFR-13753
Index: DFR-13753
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Regular price €8.22 Price €8.22

DFRobot Gravity - voltage divider 1/5

A voltage divider is used, when the measured voltage has a larger value than the range of A/D converter. The device works in the range from 0,0245 V to 25 V. The output...
Index: DFR-11261
Index: DFR-11261
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Regular price €4.23 Price €4.23

Analog ammeter - panel DH-50 - 10A

Analog ammeter capable of measuring current in range up to 10 A. It has a square case in size 50 x 50 mm. The accuracy CLASS 2.5.
Index: UPM-09921
Index: UPM-09921
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Regular price €3.67 Price €3.67

DFRobot Gravity - Hall magnetic field sensor

The magnetic field sensor with digital output OH9249. It is supplied with the voltage of from 3.3 V to 5 V, it works with Arduino modules.
Index: DFR-04714
Index: DFR-04714
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Regular price €7.14 Price €7.14

Analog voltmeter - panel DH-50 - 40V DC

Analogue voltmeter capable of measuring voltages up to 40 V . It has a square housing with dimensions of 50 x 50 mm. Its accuracy is CLASS 2.5.
Index: UPM-09923
Index: UPM-09923
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Regular price €3.67 Price €3.67

Analog voltmeter - panel BP-65 - 40V DC

Analog voltmeter capable of measuring DC voltage in the range up to 40 V. It has a round case with a diameter of 82 mm. The accuracy CLASS is 2.5.
Index: UPM-09926
Index: UPM-09926
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Regular price €3.88 Price €3.88

ACHS-7121 Current Sensor Carrier -10A to +10A - Pololu 4030

Current sensor operating in the range from -10 to 10 A based on the Hall effect. The input voltage from 4.5 V to 5.5 V. The sensor is designed to use in systems of 5 V.
Index: PLL-14236
Index: PLL-14236
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Regular price €8.66 Price €8.66

Current Sensor ACS723 - 5A current sensor - SparkFun SEN-13679

Current sensor operating in the range from 10 mA to 5 A on the basis of Hall effect. The output is an analog voltage. The supply voltage is 5 V.
Index: SPF-12373
Index: SPF-12373
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Regular price €9.27 Price €9.27

ACHS-7123 Current Sensor Carrier -30A to +30A - Pololu 4032

Current sensor operating in the range from -30 to 30 A, based on the Hall effect. Input voltage is from 4.5 V to 5.5 V. The sensor is designed to use in systems of 5 V.
Index: PLL-14234
Index: PLL-14234
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Regular price €8.46 Price €8.46

Analog voltmeter - panel 91C16 mini - 250V DC

Analog voltmeter capable of measuring voltage up to 250 V. It has a square case in size 40 x 40 mm. Yhe accuracy CLASS 1.5.
Index: UPM-09925
Index: UPM-09925
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Regular price €2.04 Price €2.04

AC current sensor SCT 013-100 - to 100 A

The sensor providing the measurement of alternating current flowing in the pipeline without the need to pull off the isolation. The measurement occurs through the insulation on...
Index: OST-14262
Index: OST-14262
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Regular price €10.39 Price €10.39

Grove - Hall sensor / magnetic field

Module from the Grove series based on sensor A1101. It is powered by a supply voltage of 3.8 V to 24 V It provides the detection of a magnetic field. The kit also includes a...
Index: SEE-11315
Index: SEE-11315
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Regular price €1.93 Price €1.93

Apart from such important measurable values ​​as voltage, power or current impedance, it is necessary to define the current parameters to describe the phenomena occurring in electrical circuits. These parameters are tested by professional current sensors available in this category. Modern measuring technology enables precise and fast measurement of both direct current and alternating current with regular and irregular waveforms. For this purpose, measuring instruments have been designed which, based on magnetic circuits and semiconductor elements, allow to obtain information about the value of the current flowing in the tested circuit.

The Botland store proposes to buy meters and current flow sensors, which will be ideal elements for building a comprehensive measurement system. They can also come in handy for many other projects!

What is the current sensor? How do electric current sensors work?

Current sensors are commonly used devices. Depending on the type of device, they can act as independent measuring devices or modules that can be added to a given electronic project. In this category you will find many types of current sensors. Devices such as - for example - Grove ACS70331 DC current sensor enable precise measurement of DC / AC � 5 A (direct current and alternating current). The construction of the sensor is based on the giant magnetoresistive (GMR) technology. The sensor measures the current with a basic sensitivity of 200 mV / A. The module is compatible with Arduino and Raspberry Pi. This sensor, as well as many others available in our Botland store, is also used to detect a magnetic field. It uses an integrated, low-resistance primary wire through which the current flows. The modules are compatible with controllers such as Arduino and Raspberry Pi, but they can also work with other parts of programmable electronics.

How to measure electric current?

Before taking any measurement, please read the instructions carefully. When you want to measure the current in an electric circuit, be sure to carefully follow the safety rules to avoid electric shock and damage to the circuit components.

First of all, you must not touch non-insulated circuit elements as they may be live (wrong connection). Secondly, the principle of limited trust towards bystanders and animals should be applied to prevent their unauthorized contact with live parts. If you want to measure the current intensity, disconnect the circuit from the supply voltage and, in the case of circuits with capacitors, wait a few minutes after turning it off to discharge them. Remember to obey all of the specific steps that can be easily found in the manufacturer’s manual.

When connecting the ammeter directly to the circuit, it is necessary to determine for which element you want to measure the current intensity. Then, the measuring system should be connected in series with this element. If the current flowing in the circuit exceeds the allowable measurement range, a voltage divider, inductive current transformer or semiconductor sensor should be then connected. The obtained measurement data can be sent to the analog input in the Arduino or Raspberry Pi electronics. Thanks to this you can implement, for example, overcurrent protection that controls the relay, or a measurement system that monitors electricity consumption.

Current sensors and Hall effect

Some more advanced sensors measure the current using the so-called Hall effect. An excellent example are the sensor modules manufactured by Pololu. With these devices you can monitor the power consumption of receivers and detect the load connected to the network. It is also possible to implement short-circuit and overload protection.

In the case of Pololu sensor modules, the analog output enables the sensor to be connected to the Arduino. Thanks to this, it is possible to read the voltages representing the current in the tested circuit in a very convenient way. Full compatibility with Arduino and other programmable electronics is an advantage for many other reasons as well. If, on the other hand, you want to measure alternating current in many places of the circuit, then a good solution is to use the SCT 013-030 sensor, which allows you to measure sinusoidal alternating current with RMS value up to 30A, without disconnecting the tested circuit.