Among the various sensors, current sensors are the most widely used. This is due to the fact that they are devices that are useful almost everywhere. They are used to measure the consumption and intensity of electric current both at home and in factories. They are used by large and small companies, individuals, public places and of course all DIY enthusiasts!
Monitor allows you to monitor energy consumption in the network through wi-fi. It is a 3-phase device for easy installation in the switchgear of electricity, also provides the measurement for 1 phase. The measurement is carried out using a current transformer 100 A. the Device transmits collected data to the cloud, which you can read in the app.
The sensor is analogous to a car odometer for the electric current. You can count coulombs, i.e. the amount of current used from the battery in ampero-hours. The module is powered with the voltage from 2.7 V to 8.5 V and it operates with currents of up to 1 A.
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 analog voltage of 0 to 1 V.
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 value of from 0 to 5 V and is proportional to the input voltage.
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 voltage is proportional to the input voltage, in a ratio of 5 to 1.
The sensor measures the intensity of the current flowing in the pipeline without its opening. Measurement occurs through the insulation on the one wire, output is the current analog signal from 0 mA to 2.5 mA. The module is equipped with Grove interface that facilitates its connection to the Arduino along with Base Shield v2.0.
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. It has a built-in amplifier and potentiometer for adjusting the sensitivity.
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 a single wire, the output is analog voltage of 0 V to 1 V.
Popular current sensor ASC725 basing on the Hall effect, equipped with the Grove interface that facilitates greatly the use of the sensor in cooperation with Arduino and Raspberry Pi. The sensor, to operate, has to have a power supply of 3.3 V or 5 V and it can measure current of up to 10 A at a voltage of up to 400 V.
Popular current sensor ASC70331 using magneto-resistance, equipped with the Grove interface that facilitates greatly the use of the sensor in cooperation with Arduino and Raspberry Pi. The sensor, to operate, has to have a power supply of 3.3 V or 5 V and it can measure current of up to 2.5 A at a voltage of up to 100 V.
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!
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.
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.
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.