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This section provides an overview for galvanometers as well as their applications and principles. Also, please take a look at the list of 7 galvanometer manufacturers and their company rankings. Here are the top-ranked galvanometer companies as of January, 2025: 1.scientific instrument traders, 2.Novanta Photonics, 3.lTek Online.
Table of Contents
A galvanometer is a device designed for measuring electric current. In its simplest form, a galvanometer measures current by clamping onto a cable. The output display can be either analog or digital.
Galvanometers come in a wide range of current measurement capabilities, spanning from milliamperes to several amperes. They find applications in various fields, including manufacturing, where they are used to measure very small currents such as microamperes.
Galvanometers are essential for detecting electric currents in electrical and electronic components.
Simple galvanometers are commonly used for equipment maintenance and product inspection due to their compact, lightweight, and portable nature. They are employed to measure currents in circuits where a permanent current indicator is not installed. Additionally, they are often utilized in elementary school science experiments due to their ease of use and cost-effectiveness.
In industrial settings, where current is a fundamental physical quantity, galvanometers play a crucial role in product development and quality control, particularly in industries such as semiconductors and functional materials. Specialized galvanometers, known as electrometers, are used for measuring extremely small currents, even in the nanoampere range, especially in information equipment.
A typical galvanometer comprises a movable coil, a permanent magnet, a pointer, and a coiled spring.
The movable coil is situated within a permanent magnet, which generates a magnetic field. The pointer moves in coordination with the movable coil. When an electric current flows through the coil, the pointer's position corresponds to the current's magnitude, providing a current reading. When the current ceases, the coiled spring returns the pointer to the zero position.
Galvanometers have current limits, and exceeding these limits can lead to damage or disconnection of the movable coil. The allowable current value is specific to each galvanometer and should be checked before measurements. Excessive current can also generate Joule heat, potentially causing coil damage. For precise measurements of tiny currents, consider using devices like electrometers to ensure accuracy.
Both galvanometers and ammeters are instruments for measuring current, but galvanometers are a type of ammeter. Galvanometers are used for detecting minute current values and determining current direction. Ammeters, on the other hand, quantitatively measure current values and are typically employed for measuring larger currents. Unlike galvanometers, ammeters do not provide information about the current direction.
It is strictly prohibited to connect a power supply directly to a galvanometer. Galvanometers have very low internal resistance, and a direct connection to a power supply can damage the movable coil. Therefore, when connecting a galvanometer to a power source, always use it in conjunction with an electrical resistance.
In electrical circuit diagrams, ammeters are represented by the symbol "A," voltmeters by "V," and galvanometers by "G." Galvanometers are denoted by the letter "G" in honor of the Italian physicist Luigi Galvani, from whom the name "galvanometer" is derived.
*Including some distributors, etc.
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Novanta Photonics, founded in 1947 with headquarters in the UK, is a manufacturer of the key components of laser-based diagnostic, analytical, micromachining, and fine material processing equipment. The company's products include laser beam steering components, multi-axis scan heads, C02 lasers, solid-state lasers, and ultrafast lasers. Novanta Photonics’ products are used by medical and industrial OEMs and system architects to enable and improve laser-based processing equipment. Some examples include glass processing, laser marking, micromachining, metrology combs, and optical tweezers.
Scientific Instrument Traders, established in 1985, is a manufacturer, supplier, importer, and exporter of scientific and engineering research instruments in Ambala Cantt, Haryana. The products include burettes, chromatography vials, condensers, desiccators, and borosilicate adapters, beakers, and bottles. It also produces distilling apparatus, extraction apparatus, dishes, cones, and filtration assembly. The company also provides educational instruments such as microscopes, optical devices, educational models, charts, and electronics. The company offers after-sales services such as installation, onsite support, operational training, and user manuals.
KDS Instrument (Kunshan) Co., Ltd., established in May 2011, is a manufacturer and supplier specializing in power distribution panel-mounted instruments. The company’s product portfolio includes panel meters, shunts, and other related products. They also offer AC and DC voltmeters, ammeters, frequency meters, power meters, and more for power grid applications. All their products are made made to international standards with CE and ISO 9000 certification. The company offers technical support and after-sales service to their global customers across different markets including North and South America, Europe, Asia, and Africa.
LssPhilippines in Quezon City, Metro Manila, established in 2000, is a manufacturer and supplier of laboratory and medical equipment for school labs, research institutions, and TVET labs. The school lab equipment includes lab glassware, cold chain equipment, microscopes, and equipment for biology, chemistry, and physics labs. Hospital lab equipment includes furniture, diagnostic equipment, hospital wear, medical utensils, and hospital disposables. More laboratory equipment includes autoclaves, balances, calibration weights, and scales used in the semiconductor, mining, aerospace, and automotive industries.
Established in 1971, Ambala Electronic Instruments is a reputable manufacturer and supplier of precision laboratory instruments and equipment located in India. The company specializes in producing a diverse range of scientific instruments for various applications in research, education, and industry. Ambala Electronic Instruments offers a wide array of products, including laboratory ovens, incubators, shakers, and analytical balances. These instruments cater to the needs of laboratories, educational institutions, and industrial facilities, ensuring accurate and unfailing results in experiments and processes. Their devotion to quality and innovation has positioned them as an esteemed partner in the scientific community.
LTek Online is based in Slovakia and has been a manufactuer of engineering equipments and test rigs since its inception in 1994. The company's product lineup includes smartphones, smart watches, audio devices, gaming accessories as well as home automation solutions. The company's customer-centric approach extends to efficient shipping, hassle-free returns, and responsive customer support. The company aims to enhance the digital lifestyle of its customers by offering cutting-edge products that simplify and elevate daily experiences. The company also specializes in electronics, gadgets, and tech-related items.
Ranking as of January 2025
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | scientific instrument traders |
20.0%
|
| 2 | Novanta Photonics |
20.0%
|
| 3 | lTek Online |
16.0%
|
| 4 | LssPhilippines |
16.0%
|
| 5 | AMBALA ELECTRONIC INSTRUMENTS |
12.0%
|
| 6 | KDS INSTRUMENT (KUNSHAN) CO., LTD |
12.0%
|
| 7 | Mitsubishi Electric Corporation |
4.0%
|
Derivation Method
The ranking is calculated based on the click share within the galvanometer page as of January 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.
*Including some distributors, etc.
| Country | Number of Companies | Share (%) |
|---|---|---|
|
India
|
2 | 33.3% |
|
United States of America
|
1 | 16.7% |
Japan
|
1 | 16.7% |
|
China
|
1 | 16.7% |
|
Philippines
|
1 | 16.7% |
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