Multimeter calibration,EV charger tester Manufacturer-TUNKIA

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Calibration & Metrology

Tunkia is striving to become a world-class supplier of electromagnetic measurement equipment.

Calibration Lab

Engineers are calibrating TD1858 Portable Multi-function Calibrator.

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Calibration Working

TUNKIA is a global leading manufacturer of high-end electromagnetic measurement and calibration instruments.

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TD1880 Precision Multi-function Calibrator

Suitable for 6.5 digit multimeter calibration.
Calibration Lab

Tunkia is striving to become a world-class supplier of electromagnetic measurement equipment.

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ISO Certificate

Our quality management system is certified to ISO 9001: 2015

COMPANY PROFILES
A Global Leading Manufacturer of High-End Electromagnetic Measurement and Calibration Instruments.
400

Personnel

300

Equipment

30000

Users

tunkia global leading manufacturer of high-end electromagnetic measurement instruments

Unveiling TUNKIA's 18-Year Journey

Committed to serving users in the calibration field, TUNKIA specializes in tackling intricate challenges within electromagnetic measurement. Despite our dedication, our story remains relatively undiscovered, gradually unfolding over the span of the past 18 years. This historical timeline bears witness to our persistent efforts and continuous pursuit of excellence, establishing us as a significant player in the industry today. And this is our story.

18 Years of Electromagnetic Calibration Excellence

Since the establishment of TUNKIA in 1998 as Tong Ren Co., Ltd., we have been deeply engaged in electromagnetic calibration for 26 years, continuously expanding our footprint in the realms, and achieving remarkable success. In 2006, TUNKIA Co., Ltd. was formally established, marking the commencement of our pioneering journey in the realm of electromagnetic measurement.

Revolutionizing Precision: TUNKIA's Electrical Innovations

TUNKIA has become a leading manufacturer of electrical measurement instruments in China. After introducing a series of high-precision and high-stability electrical calibrators, TUNKIA shifted its focus to the field of DC energy measurement.
In 2011, TUNKIA pioneered the industry by launching China's first set of DC energy standard devices (TD1550), filling the void in DC measurement in China.
In 2012, we launched China’s first 0.01 class commercial three-phase standard energy meter and DC standard energy meter (TD3310, TD1300).
In 2015, we introduced the Chinese version of a multifunctional precision calibrator (TD1880), capable of calibrating 6.5 digit multimeters.
In 2016, TUNKIA released the world's first vector voltage analyzer, with a phase A-class measurement uncertainty reaching 0.3μrad@45Hz~1kHz (TH2000).
In 2018, we introduced the world's first set of DC energy standards (10 ppm).

In 2020, we successfully developed and launched the world's smallest 0.01 class single-phase standard electricity meter, widely used in the automatic calibration of power flow lines (TK3100, TK3300).
In 2022, TUNKIA once again innovated by releasing the world's first wide-frequency power analyzer calibration device (TA2100).
In 2023, we led the trend by launching the Chinese version of a high-precision multifunctional 8.5 digit calibrator (TH1950), achieving a significant breakthrough in the field of domestic electrical calibrators.
In 2024, we will introduce the Chinese version of an 8.5 digital multimeter and a 0.005 class three-phase standard electricity meter, continuing to lead the industry's development.

Founder and Pioneer: TUNKIA's Magnetic Metrology

In the field of magnetic metrology, TUNKIA is not only a pioneer but also a founder.
In 2013, we led the industry by introducing China's first set of amorphous single-piece magnetic performance testing system (TD8160).
In 2017, we revolutionized by releasing China's first set of electrical steel magnetostrictive performance measurement system (TS3300).
In 2021, we took another significant step in the field of electrical steel measurement by successfully launching the first domestically developed automatic testing system for the magnetic properties of electrical steel. This system has been widely adopted by major steel plants such as Bao Steel and Wu Steel (TS3200).

Sustainable Solutions: TUNKIA's EV Charger Testing

Additionally, in response to global warming, TUNKIA has actively put forward our own solution.
In 2014, we introduced China's first set of electric vehicle charging station testing instruments (TD1320, TD1330).
In 2023, we launched an internationally-oriented ev charger tester(TK4830), designed to comply with European standards(CCS2, Type 2) and Japanese standards(CHAdeMO).
This innovative initiative aims to promote sustainable development and contribute our efforts to the standardization of electric vehicle charging facilities.

Trailblazing Excellence: TUNKIA's Electromagnetic Metrology Journey

TUNKIA's research in electromagnetic metrology is relentless. Our vision is to pioneer in electromagnetic measurement, creating cutting-edge equipment globally. Recognizing the importance of electromagnetic measurement in various sectors, our efforts go beyond meeting market demands to contribute to industry progress.
In the future, we aim to surpass our achievements, pursue excellence, and contribute to the evolution of electromagnetic metrology. We appreciate your support and look forward to achieving new heights in the field together!
TUNKIA Profile

TUNKIA is a global leading manufacturer of high-end electromagnetic measurement and calibration instruments. Our products and technology cover nearly all fields of electromagnetic measurement, and its domestically produced high-end instruments of class 0.01 or above have an over 80% market share in China. Our business covers more than 50 countries and regions, serving more than 30,000 users around the world, covering national metrology institutions and key laboratories.

Formally established in 2006, TUNKIA has persisted in investing more than 25% of our annual revenue in research and development, actively responding to various technical challenges in the field of electromagnetic measurement. Our company has 400+ employees and has established a research institute consisting of more than 120 engineers. We have launched 22 major series and more than 300 models of electromagnetic measuring instruments, which are widely used in calibration, industrial testing, scientific research, etc.

TUNKIA focuses on independent R&D of core technology, and has received certification and honors from authoritative agencies across the world. We have been invited by the International Electrotechnical Commission (IEC) and the Institute of Electrical and Electronics Engineers (IEEE), and has been invited by over ten professional committees such as China Metrology Technical Committee on Electromagnetic and Chinese Society for Measurement.

TUNKIA has led or participated in the formulation and revision of 3 international standards and more than 30 national standards or metrological specifications. We have also participated in national key research and development projects and the Chinese government's assistance program for metrology and standard projects in "One Belt One Road" countries. In 2022, we awarded the title of National-level Specialized, Sophisticated, New and Distinctive “Little Giant”, becoming the only company in the field of electromagnetic measurement.

In the future, TUNKIA will strengthen the mutual penetration of cross-fields, continue to expand into the fields of mechanics, quality, and life sciences, and become a world-class provider of comprehensive measurement solutions. We will work with the upstream and downstream of the industry chain to build an instrument ecosystem for precision testing.

Participate in Standards Setting and Revision

IEC/IEEE International Standards

GB National Standards of China

JJG/JJF Verification Regulation /Calibration Specification of China

Participate in Standards Setting and Revision

International Patent

Invention Patents

Utility Model Patents

TUNKAI Calibration Products

DC CHARACTERISTICS

The range of working voltage, working current and other electrical parameters vary from V to kV and A to kA, which ensures the accuracy and stability in the wide dynamic range, and the nonlinear nature of grid load also causes DC overlap, which requires the frequency of the test device and the synchronous output and measurement.

MEET MULTIPLE NEEDS

TUNKIA has developed a comprehensive testing scheme based on the requirements of R46 standards. For the new intelligent electric energy meter, the measurement verification test specified in the verification procedure and the type evaluation test specified in the type evaluation outline can be completed.