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This section provides an overview for ammeters as well as their applications and principles. Also, please take a look at the list of 28 ammeter manufacturers and their company rankings. Here are the top-ranked ammeter companies as of December, 2024: 1.Murata Manufacturing Co., Ltd., 2.Littelfuse, Inc, 3.Greenlee.
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Categories Related to Ammeters
An ammeter is an electrical meter used to measure the magnitude of an electric current. It is a measuring instrument with small internal electrical resistance. The circuit at the point of measurement is disconnected, and the ammeter is connected in series between them. Inside the ammeter, a low resistance is inserted into the circuit, and the voltage at both ends of the resistance is measured and converted to a current value.
A current shunt or current transformer is used to measure large currents. An ammeter is broadly classified into a DC ammeter and an AC ammeter. An ammeter is available in two display types: analog and digital.
In industrial applications, an ammeter is more accurate than multimeters and clamp meters and can measure minute currents.
Ammeters can be used in laboratories where electricity is used for precise measurements, or they can be fixed to control panels as monitors. There are also cases where the current is checked using a simple tester. Ammeters in multimeters, clamp meters, etc., are used to check power distribution and transmission in homes and buildings.
Some automobile instrument panels are equipped with DC ammeters. A positive reading indicates the battery is charging and a negative reading indicates it is discharging. Ammeters are commonly installed in switchboards of factory equipment, buildings, and power generation equipment. School science experiments teach how to measure current. In laboratories, the current is often measured precisely.
Fine ammeters and totalizing ammeters are also used for plating and surface treatment with fine currents, which require measurement of fine currents.
Ammeters are connected in series to a circuit. Analog ammeters use a pointer to indicate the current value. The needle of the permanent magnet moves in response to changes in the magnetic field caused by the current flowing through the internal coil. DC ammeters are of the moving coil type and consist of a permanent magnet and a coil. For large current measurements, a current divider is used to extract a portion of the current for measurement.
Ammeters for alternating current are mainly moving iron strip-type instruments and are used to measure commercial frequencies of about 45 to 65 Hz. When measuring current, voltage drops at the connection terminals and indication errors due to heat generation and magnetic fields may occur. Measuring a current greater than a certain value will result in a larger error. To improve the accuracy of current measurement, current dividers are used for DC and current transformers are used for AC.
Ammeters with digital displays use current dividers, current sensing resistors, and AC current sensors. The fine voltage at both ends is then digitized and used as the current measurement value. In addition, an integrating ammeter is used at plating sites. It is possible to measure the totalization of the current that has flowed over a certain period.
Ammeters are a measuring instrument that measures the current flowing at a certain point in a circuit. It is made so that its internal resistance is low and does not affect the current flowing in the circuit. When connecting ammeters, insert the ammeters in series with the circuit whose current is to be measured. Connect the higher potential of the circuit to the + side of the ammeters and the lower potential of the circuit to the - side of the ammeters.
There are generally several terminals on the (-) side of the ammeters. If the measurement range is known, select the appropriate range; if not, start with a large range and work down to the appropriate range. If you start with a small range, you may destroy the ammeters when a current greater than the range is applied. Some ammeters are protected by an internal fuse.
A similar instrument is the voltmeter. A voltmeter is connected in parallel to a circuit and measures the voltage between two points. Connecting ammeters to measure voltage in the same way as ammeters is very dangerous because it is the same as shorting the power supply. Therefore, extreme caution is required.
There is a useful instrument called a multimeter or tester. They can measure not only current but also basic electrical characteristics such as current, voltage, and resistance, regardless of whether it is AC or DC. There are digital and analog types. They are mainly handy types that can be easily carried around and used.
Current is displayed by measuring the voltage at both ends of a micro resistor inside the instrument and converting it to current. DC voltage is displayed by amplifying the voltage between two probes or by attenuating it through an attenuator. AC voltage is displayed by converting AC voltage to DC voltage through a rectifier circuit.
*Including some distributors, etc.
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Greenlee Textron, Inc., founded in 1862, operates as a significant manufacturer in the industrial and electrical tool industry. The company provides a range of products and solutions related to warehousing, transportation, and general storage. As a key contributor in the machinery manufacturing sector, Greenlee Textron, Inc. offers power-driven hand tools and other general purpose machinery, addressing various industrial needs. The company's business in multiple locations, including Rockford, IL, and Southaven, MS, underscores its run to serving diverse sectors and fulfilling the requirements of professionals worldwide.
Littlefuse was founded in 1927 and headquartered in the United States. Littlefuse is a diversified industrial technology manufacturing company with customers globally. Littlefuse has products segments which are electronic, industrial, and transportation. Electronic segment products include fuses and fuse accessories, positive temperature coefficient resettable fuses, polymer electrostatic discharge suppressors, and varistors. Transportation products include blade, resettable, and high-current and high-voltage fuses, as well as battery cable protectors; fuses, switches, relays, circuit breakers, and power distribution modules. The Industrial segment offerings include contactors, transformers, and temperature sensors for use in renewable energy and energy storage systems, electric vehicle infrastructure, HVAC systems.
elc construction électronique, established in 1973 and based in Annecy, France, is a manufacturer of decade boxes, function generators, and low-voltage power supplies. The company provides a range of test and measurement products, including fixed and adjustable bench power supplies, function boxes, and decade capacitance, inductance, and resistance boxes. It also offers power supplies, ammeters, and digital voltmeters for automation and control systems. These products find applications in research and industrial settings, such as electronic test and calibration laboratories, energy management systems, and machine manufacturing.
Murata Manufacturing Co., Ltd. (Murata Manufacturing) was founded in 1944 and is headquartered in Nagaokakyo, Japan. Murata Manufacturing designs, manufactures, and sells ceramic-based passive electronic components and solutions globally. The company operates through components, modules, and others segments, serving communications, mobility, industrial, healthcare, and personal electronics customers. They company's product offerings include noise suppression products, quartz devices,RFID devices, phase shifters, and wireless connectivity platforms. Services such as webinars and video library are also available for existing and potential customers alike.
ENTES Elektronik, established in 1980 and headquartered in Istanbul, Turkey with additional offices in Germany, Greece, and India, is a manufacturer of power and energy management solutions used in industrial applications. The company’s production line is categorized into power quality and energy, electrical measurement, power factor correction, energy management hardware and software, and current transformers. It also offers protection & control products such as phase failure relays, liquid level controllers, overcurrent monitoring relays, daylight switches, and control & isolating transformers.
UnidataFC srl was established in 1951 and is a manufacturer of analog instruments, digital instruments, and automatic control systems based in Castellanza, Varese, Italy. The company offers various products in the portofolio, such as MID energy counters, earth leakage relay, voltage transformers, industrial remote controls, and AC current transformers. Various solutions also offered by the company as a service such as flat membrane keyboards, remote control keyboards, and industrial radio controls. The company has passed the certification of ISO 9001 for the qualitative and structural adjustment.
Circutor, established in 1973 and headquartered in Barcelona, Spain, is a manufacturer that develops technology and solutions for the electrical and energy sector. The company's products include measurement and control devices, metering equipment, control systems, and harmonic filtering. It also offers power factor correction and portable power analyzers, such as the MYeBOX-150+3 FLEX-R45. Its products help to reduce CO2 emissions by reducing energy consumption. It serves a range of industries such as generator, tertiary sector, and home use.
Celsa Messgerate-España S.L. was established in 1940 and is a manufacturer of current transformers and measuring equipment based in Moncada, Valencia, Spain. The company offers various products such as current transformers, analogue meters, universal measuring instruments, hour counters, and digital panel meters. The products have been used in various applications such as industrial factories, construction technology, power generation, water supply, and solar panels. The products are manufactured under the compliance of CE and IEC quality standard.
Sansha Electric Manufacturing Co.,Ltd. was founded in 1933 and is headquartered in Osaka, Japan. Sansha produces, sells, and installs electric, semiconductor and applied, and medical machinery and equipment in Japan and internationally. Sansha provides discrete semiconductor components such as fast and soft recovery diodes, power modules, rectifier diodes, Schottky barrier diodes, SIC MOSFET, thyristors, and TRIAC components. Sansha also offers electric power regulators, general-purpose rectifiers, grid connected inverters, industrial power supplies, power supply products for evaluation and light sources, uninterrupted power sources, and welding machines.
Advanced Power Solutions is a sustainability oriented mobile energy consumer battery manufacturer established in Tessenderlo, Belgium since 1970. Under its mission to provide easy, safe, and sustainable mobile energy solutions, the company has a production capacity of 1.5 billion batteries per year. In fact, it holds multiple brands that contain an a rich variety of batteries for all kinds of purposes. These include Panasonic, eneloop, and Blaupunkt. The venture's products are European-made, having its production facilities distributed in different european countries. It
Bee Instruments is a manufacturer of test and measurement instruments based in India. Headquartered in Mumbai and founded in 1958, the company offers a wide range of products including, analog panel meters, shunts, solid-state relays, proximity switches, and signal conditioning products. Its products are found in various industries including telecommunications, electrical, electronics, instrumentation, automation, packaging, manufacturing, and more. Additionally, the company offers custom-made solutions based on client specifications. The company's global footprint extends to major countries in five continents, reflecting its international influence.
Simpson Electric Company Inc., established in 1927 and headquartered in Lac Du Flambeau, Wisconsin, United States, is a manufacturer of electrical meters, panels, and test equipment. The company's products include smart meters, advanced digital panel meters, and analog panel meters. These products are used in electrical systems and components to monitor and test power output or by maintenance professionals to inspect electrical systems. It offers contract manufacturing for punch pressing, compression molding, and wave soldering and serves industries that include power management, new energy, and automotive.
UNI-TREND TECHNOLOGY CO., LTD. was established in 1988 and is a manufacturers of measuring and imaging devices based in Dongguan, Guangdong, China. The company produces various products such as digital multimeters, electrical power testers, DC electronic loads, handheld thermal cameras, and thermal imaging monoculars. The products are used in various applications such as industry electricity, environment monitoring, communication, photovoltaic power station, and ranging and mapping. The company has obtained ISO 9001 and ISO 14001 certifications.
Datcon Industrial Electronic Ltd., established in 1982 and headquartered in Budapest, Hungary, is a manufacturer and distributor of electronic and electric power components. The company's products include AC current and voltage meters, safe-output power supplies, and multifunction power meters. Its products are used in power systems, industrial chemical processing plants, and for powering and controlling other industrial processes. The company is also an official distributor of Vega products and offers customer services, including the calibration of gas pressure test pumps, serving the petrochemicals, waste water, and power supply industries.
Trumeter, established in 1937 and based in Coconut Creek, Florida, is a manufacturer and supplier of precision measurement instruments. They provide test and measurement equipment such as digital panel meters used to measure electrical and physical quantities. The company is catering to similar industries for accurate testing and measurement, offering industrial controls to automate processes like conveyors, valves, and pumps which are utilized across various industries, including manufacturing, power, telecommunications, and healthcare.
Magnaflux, established in 1929 and headquartered in Glenview, Illinois, is a manufacturer that provides non-destructive testing solutions using techniques such as magnetic particle inspection, penetrant, and resonant testing. The company's products include liquid penetrant testing, magnetic particle inspection, UV lamps, aqueous cleaners, and accessories for magnetic particle inspection. It also offers ultrasonic testing couplants and gels for professional non-destructive testing. Its products can detect surface and subsurface discontinuities in ferromagnetic and non-ferromagnetic materials. The company has achieved ISO 9001 certification for its quality management system. Its products are used in various applications, from automobiles to bridges, airplanes, buildings, and railroads.
Hager Ltd., established in 1955 and headquartered in Blieskastel, Germany, is a manufacturer of electrical installations tailored for use in residential, commercial, and industrial buildings. The company's product range includes meter space systems, distribution systems, switching and protection devices, energy management and monitoring solutions, and cable routing and room connection systems. These products cater to various applications, including energy distribution and metering systems, cable management systems for power and data distribution, and building security systems. The company supplies products from other brands such as Berker, Bocchiotti, Elcom, and E3/DC. It has 22 manufacturing sites in 10 countries worldwide.
Perry Electric S.r.l, founded in 1969 and based in Veniano, Italy, is a manufacturer and designer of systems and equipment for energy, temperature, time, and safety control. The company offers a wide range of products, including devices called chronothermostats that allow you to set the time at which the room temperature must be maintained, heat metering systems, components for systems, and much more. The company has achieved the ISO 9001: 2015 and the IQNET recognized certificate for maintaining a quality management system.
ELEQ is a Dutch electrical measuring instruments and connection systems manufacturer founded in 1946 and based in Steenwijk. The company's product portfolio includes energy management tools like split-core and medium voltage transformers, connection boxes engineered from various materials, and measuring instruments as well as transducers that help monitor currents or voltages. These smart electrotechnical instruments protect, measure and connect electrical energy for clients in the energy, public lighting, and industrial automation sectors. ELEQ also provides its clients with customized solutions and technical support from its ISO 9001 and ISO 14001-certified facilities.
RAYOVAC is a battery manufacturer originally founded in 1906 in Chicago but based in Fennimore, Wisconsin. The company's long expertise and presence in the industry have made it part of grand historical events, such as the crossing of the atlantic by plane in 1927, where two Ray-O-Lite flashlights were part of the aircraft's emergency equipment. The venture's approach to quality entails two production floor reliability tests and seven qualification protocols. Its product catalogue includes lights and many kinds of batteries. For instance, it makes batteries aimed for hearing aid devices and rechargeable batteries.
Selec Controls, founded in Navi Mumbai, Maharashtra, in 2000 is a manufacturer of Electrical Measurements and Protection, Meters, and, Automatic Power factor controllers. The company's product portfolio includes Indicators and Controllers, Digital Timers, Temperature Controllers, Speed Monitoring Relays and Humidity and Temperature Controllers. The company serves industries such as Oil and Gas, Aerospace and Defense, Automotive and Transportation, Construction, and Power Generation. The company has 200+ distributor network and global sales offices.
Tense Elektronik is a manufacturer and supplier of electronic products and technologies in industrial automation solutions established in Turkey since 2006. The company specializes in automatic control sensors, controllers, energy analyzers, multimeters, frequency meters, ammeters, timers, among others. It serves industrial sectors such as automotive, manufacturing, construction, food and aerospace. The company's products improve operational efficiency, fluid processes in industries and the optimization of production lines and quality control processes. The company has certification in the Iso 9001:2015 Quality Management System, TSE Certificate and RoHS.
Megacon is a manufacturer of electronic products and equipment founded in 1972 and headquartered in Bergen, Norway. The company primarily produces various power distribution and generation devices such as synchronizers, load sharers, current transformers and generator controllers. Other products include monitoring and alarm mechanisms to work in conjunction with supervisory control and data acquisition (SCADA) systems, as well as digital and analog signal processing devices for converting or uploading relayed information. Megacon products have applications in the marine and offshore, renewable energy, and industrial sectors — supplying clients via a network of partner distributors and sales agents in over 50 countries.
PeakTech Prüf- und Messtechnik GmbH, established in 1957 and based in Ahrensburg, Germany, is a manufacturer and supplier of electronic measurement technology. The company's product portfolio includes multimeters, voltage testers, thermal imaging cameras, isolating transformers, and sound level meters, as well as calibrators. These products are applied in various industries, including electrical engineering, environmental monitoring, aviation, telecommunications, and research and development. The company provides customer services, including technical support, repair, service requests, and product development.
DEIF A/S, founded in 1933 and headquartered in Skive, Denmark, is a supplier of safe power control products for decentralized power generation on land and sea. The company offers products such as single genset controllers, protection relays, HMI control panels, and pitch battery chargers. The company's products are used in land power, whitepapers, webinars, wind power, and marine sectors. It has ISO 9001:2015 and ISO 14001:2015 quality management certifications and also offers training, repair, and consultancy services.
Ranking as of December 2024
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | Murata Manufacturing Co., Ltd. |
9.1%
|
| 2 | Bee Instruments |
7.5%
|
| 3 | Advanced Power Solutions |
7.0%
|
| 4 | Littelfuse, Inc |
5.9%
|
| 5 | Greenlee |
5.3%
|
| 6 | RAYOVAC |
5.3%
|
| 7 | CIRCUTOR |
4.8%
|
| 8 | ENTES |
3.7%
|
| 9 | SANSHA ELECTRIC MANUFACTURING CO., LTD. |
3.7%
|
| 10 | DATCON Industrial Electronic Ltd. |
3.2%
|
Derivation Method
The ranking is calculated based on the click share within the ammeter page as of December 2024. 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.
*Including some distributors, etc.
| Country | Number of Companies | Share (%) |
|---|---|---|
|
United States of America
|
2 | 11.8% |
|
Japan
|
2 | 11.8% |
|
Turkey
|
2 | 11.8% |
|
Spain
|
2 | 11.8% |
|
India
|
2 | 11.8% |
|
France
|
1 | 5.9% |
|
Italy
|
1 | 5.9% |
United Kingdom
|
1 | 5.9% |
|
Belgium
|
1 | 5.9% |
|
Norway
|
1 | 5.9% |
China
|
1 | 5.9% |
|
Denmark
|
1 | 5.9% |
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