Utilities

Results count! Smart watt-hour meters, gas meters and water meters all rely on accuracy.

NMi offers thorough testing for electricity meters, covering active and reactive energy measurements in compliance with IEC 62052 / 62053 series and EN 50470 standards. Our services extend to safety standard 62052-31, OIML R 46, and even specific requirements for markets like Australia and South Africa. With NMi, you have access to a dedicated team of experts involved in IEC, CENELEC, WELMEC, and OIML standards development, ensuring up-to-date knowledge in the field.

Electricity meters

NMi provides a wide range of testing for electricity meters. Our core business is testing in accordance with the IEC 62052 / 62053 series, for active and reactive energy, as well as for European harmonised standards EN 50470, which is the basis for MID approvals. Many other services are available as well. For example, testing in accordance with the new safety standard 62052-31, the OIML R 46, durability examination or 2-150 kHz testing. If likely we can also test for specific markets, such as Australia or South-Africa and apply the local requirements. With dedicated experts in international working groups like IEC and CENELEC TC 13, WELMEC 11 and OIML TC 12, NMi is your partner in testing electricity meters.

Interested in receiving the latest news on upcoming changes in IEC and CENELEC standards and their impact? Feel free to download our white paper.

Gas meters

Our testing services cover all types of gas meters, including diaphragm, ultrasonic, rotary, and turbine meters, adhering to standards like EN 1359, EN 14236, and OIML R 137. We provide testing and certification services that are recognized internationally through the OIML Certification System. NMi’s team stays ahead of developments through participation in working groups like WELMEC 11 and OIML TC 8.

Water and heat meters

NMi supports both residential and industrial applications for water and heat meters. Testing for water meters follows OIML R 49 and ISO 4064, while heat meters are examined based on OIML R 75 and EN 1434 standards. Our Notified Body status enables us to issue MID approvals, helping streamline the international certification process.

Power quality

Our services for power quality meters are compliant with IEC 61000-4-30 Edition 3, with testing based on IEC 62586-2 methods. NMi can also test PMDs (Performance Measuring and Monitoring Devices) for voltage, frequency, power, and energy, ensuring the reliability of power quality devices.

Communication, data security and penetration testing

We conduct data security and penetration testing based on CEN/CENELEC/ETSI standards, ensuring robust communication systems for smart meters. We also offer source code reviews, identifying vulnerabilities to enhance code quality and minimize risks. These code reviews are performed on site, on a manufacturer’s premises.

More details are set out in our dedicated  flyer.

Training and education

NMi provides specialized training in metrology, including courses on MID Module D and pre-audit preparations. Our training can be tailored to your needs, whether on-site or in-house, with expert guidance on legal metrology and utility meter certification.

NMi is committed to providing the highest level of support and expertise in utility metering. Whether you need Type Approval, MID certification, or OIML compliance, we are here to help. Contact us at nmi@nmi.nl to explore how we can support your utility metering needs.

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