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This section provides an overview for current loggers as well as their applications and principles. Also, please take a look at the list of 13 current logger manufacturers and their company rankings. Here are the top-ranked current logger companies as of February, 2025: 1.Kyoritsu.
Table of Contents
A current logger is a device that records current values while measuring them. Current loggers are sold as products by manufacturers of measuring instruments and store current values in memory while measuring and displaying them.
The unit of current is mainly A (ampere) or mA (milliampere), which is displayed on the interface panel. Some products offer a choice of sampling rates, with some having sampling rates as high as 100 times/second (100 Hz). Various types of power loggers are available, and there is a need to select the appropriate instrument depending on the desired measurement accuracy.
Current loggers are measuring instruments used primarily for current measurement. Handheld loggers are also available, and in most cases are carried and used.
Current loggers are divided into several parts: the clamping section, transmission wiring, interface panel, and recording media. The principle of the clamping section is the same as that of a current transformer. The main part is an arc-shaped iron core that can be opened and closed by hand. It clamps the measuring current path as the primary winding and conducts the current to the transmission wiring as the secondary winding.
The transmission wiring is a common copper wire covered with a vinyl or other sheath. Some have a dedicated connection plug at the end, while others are pulled directly into the logger. Measured values are checked and set via the interface panel.
Some devices also allow the sampling rate, recording format, etc. to be set via this panel. Increasing the rate allows for more detailed recording, but it does not allow for long-term record keeping. Measurement results are written and stored on the recording media as needed.
USB flash memory or SD cards are used as recording media. CSV or txt files are often used as the output format. The clamp section above can only measure AC power.
For DC power supply measurement, a Hall element or similar device using the Hall effect is used. The Hall effect is the principle that an electromotive force is generated when a magnetic field is generated perpendicular to a conductor through which a current flows. Hall elements use this Hall effect to convert the magnetic field generated around an electric current into a voltage.
Current loggers using a shunt resistor may also be used to measure precise current values. A shunt resistor is a low-resistance resistor that is inserted in series with a shunt resistor in the measurement circuit. The current is calculated by measuring the voltage at both ends of the shunt resistor.
Hall elements and current transformers can measure current while the circuit is energized, but shunt resistors require the measurement circuit to be opened once. Because of their versatility, current loggers that use Hall elements or current transformers as the sensing element are generally used. The unit of current is A (ampere). Units used for measurement include kA (kiloampere), A (ampere), and mA (milliampere).
Since current loggers use analog signals as input data, noise may cause inaccurate measurement results. To improve detection accuracy, it is important to take measures, such as noise elimination of the wiring path, to avoid noise.
A log is a word that means a daily record, and the object that stores the record is called a logger. For example, a blog is an abbreviation of a weblog, which means to keep a diary on the web. Thus, a current logger is an object that records electric current.
*Including some distributors, etc.
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Founded in 1940, Kyoritsu has an 80 year history as a customer-focused organization specializing in multimeters. Kyoritsu provides analog multimeters as well as digital multimeters with and without clamps offering many varieties of measurement.
Process Precision Instruments is a developer and manufacturer of high-precision process monitoring and control systems, established in 1988 and headquartered in Maharashtra, India. The company’s product line consists of a wide range of process control instrumentation products, including process controllers, data loggers, indicators, and scanners, along with MODBUS RTU input/output modules and logging modules. It also offers sensors, signal converters, isolators, and transmitters. The company is ISO 9001:2000 certified, and it caters to diverse sectors, including pharmaceuticals, chemicals, cement, paper, and scientific research.
Vaisala, established in 1936 in Finland, is a technology company that is a manufacturer of electronic measurement systems and equipment for meteorology, environmental sciences, traffic safety, and industry worldwide. The Company's products include radiosondes, barometric pressure measurements, weather stations, lighting detection systems, and moisture measurement solutions. Vaisala also sells a large selection of its products directly to consumers via the company's online store. The company also provides commercial clients with the XWeather subscription service, which offers numerous options for industrial-grade environmental measurement.
Omron Corporation, started in 1933 and headquartered in Kyoto, Japan, is a manufacturer of automation components, equipment, and systems, and it developed the first contactless proximity switch in 1960. It has four domains, including industrial automation, electronic components, healthcare, and social systems, and it provides products and services in around 120 countries and regions. Some of its products include microsensing devices, access control systems, industrial robots, surveillance cameras, and blood pressure monitors. In 1971, it developed the first online cash machine, and in 1972, it established Japan’s first welfare factory.
Connect2India, established in 2015 and headquartered in Faridabad, India, is a manufacturer that developed an integrated trading platform of the same name. Launched as a full platform in 2016, Connect2India facilitates connections between Indian micro, small, and medium enterprises (MSMEs) and overseas individuals and enterprises to foster partnerships. The company also provides assistance to these businesses in entering international markets through insights, expert resources, predictive analytics, and business tools. Additionally, Connect2India offers services such as helping with business setup in India, conducting inspections of Indian companies, and hiring import and export agents. To counter international trade frauds, Connect2India leverages technologies like Blockchain.
NOVUS Automation Inc., founded in 1982, is a manufacturing company developing products for data acquisition, temperature and process control, signal conditioning and transmission of field variables based in Brazil. The company complys with worldwide quality requirements providing solutions that exceed customers’ expectations. It is present in over 60 countries through a network of over 300 distributors and its own sales offices in Brazil, Argentina, the US and France. In 2018, it moved into its new headquarter facilities in the city of Canoas, with more than 5000 square meters of built area, the new plant ensures the possibility to quadruplicate production capability.
Ranking as of February 2025
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | Kyoritsu |
100.0%
|
Derivation Method
The ranking is calculated based on the click share within the current logger page as of February 2025. Click share is defined as the total number of clicks for all companies during the period divided by the number of clicks for each company.Number of Employees
Newly Established Company
Company with a History
*Including some distributors, etc.
| Country | Number of Companies | Share (%) |
|---|---|---|
|
Japan
|
3 | 33.3% |
|
India
|
2 | 22.2% |
|
Bulgaria
|
1 | 11.1% |
|
Malaysia
|
1 | 11.1% |
|
United Arab Emirates
|
1 | 11.1% |
|
Brazil
|
1 | 11.1% |
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