DAkkS-accredited calibration of electrical measured quantities

A DAkkS-accredited calibration laboratory is a laboratory that has been accredited by the German Accredidation Body (DAkkS) in accordance with the international standard DIN EN ISO/IEC 17025 for performing calibrations.

The standard specifies the requirements for the competence of testing and calibration laboratories. These include, among other things:

• qualified personnel and demonstrated competence
• validated and documented procedures
• traceability of measurements to national and international standards
• the determination and reporting of measurement uncertainty
• an effective quality management system

Accreditation ensures that these results are metrologically traceable, verifiable, and internationally recognized.

A calibration laboratory for electrical quantities is a laboratory that specializes in the calibration of measuring instruments for electrical quantities. These include, among others:

• Direct voltage (DC) and alternating voltage (AC)
• Direct and alternating current
• Electrical power (DC/AC)
• Power factor
• Voltage ratio
• Frequency, rotational speed

The laboratory calibrates measuring instruments such as digital multimeters, current clamps, power supplies, and power analyzers by comparing their measured values with traceable reference standards.

The calibration results, along with the measurement uncertainty, are documented in a calibration certificate that complies with standards. The calibration certificates are internationally recognized through accreditation.

ATESETO calibrates a comprehensive range of electrical quantities in its own DAkkS-accredited calibration laboratory; these are critical for modern test benches, measurement chains, and electric drive technology. These include

• electrical power – including AC power, DC power and power factor – which are essential in test benches for evaluating the energy flows and efficiencies of electrical systems
• electrical voltage and electrical current, for both AC and DC applications, which are particularly required for precise energy balances, high-voltage (HV) components, inverter testing, and current measurement modules
• frequency, which is frequently used in the field of electric drives and test benches to determine rotational speed or velocity values
• Electrical resistance, which is an important basic parameter for sensor technology, measurement chains, temperature measurement methods, and many diagnostic applications

Our calibration laboratory thus covers all essential electrical parameters relevant to high-precision measurements, quality assurance, and the functional testing of electrical systems.

Electrical measuring instruments are subject to natural changes over time – for example, due to component aging, mechanical stress, or environmental factors such as temperature and humidity.

Without regular calibration, measurement deviations can occur that:

• compromise product quality
• lead to incorrect test results
• pose safety-related risks
• lead to customer complaints or audit findings

Regular calibration ensures that your measurement results are accurate, comparable, and compliant with standards – and builds trust with costumers as well as certification and regulatory bodies.

The calibration process consists of the following steps:

1. Costumerinquiry -> Quote -> Order
2. Receipt of goods & visual inspection: Inspection for shipping damage and to verify the functionality of your measuring device.
3. Data collection & documentation: Recording of device data and desired test ranges.
4. Acclimatization of your measuring device: Before we begin the calibration, we allow the device to acclimatize in the calibration laboratory to minimize the effects and humidity. This ensures stable conditions for the subsequent measurement.
5. Calibration procedure: Comparison of measured values with traceable reference standards under defined environmental conditions.
6. Evaluation & documentation: Calculation of measurement deviations and measurement uncertainties.
7. Issuance of the calibration certificate: Issuance of a certificate compliant with standards (e.g., DAkkS calibration certificate).
8. Return shipment of your measuring device: Once approved, we will securely package your device and ship it back to you. Upon request, we can assist you with arranging shipping or provide suitable shipping solutions.

Time required:
Depending on the device type, the scope of testing, and the lab’s workload, you should generally expect 5 to 10 business days. Thanks to our modern lab infrastructure, we work efficiently and precisely to ensure short turnaround times for you.

To ensure that the calibration can be performed efficiently and correctly, the following information should be provided in advance:

• Device type, manufacturer, and model
• Serial number
• Desired scope of calibration, including measurement ranges and quantities
• Required certificate type (e. g., DAkkS calibration certificate or factory calibration certificate)
• Existing specifications or internal test requirements
• Contact person for inquiries

it is also helpful to know the environment in which the measuring instrument is used and whether specific standards or quality requirements must be met. Information about the current condition of the device – such as previous abnormalities or possible damage – also helps us correctly evaluate the measurement chain.

In addition, it is helpful to include accessories (e.g., power supplies, special adapters, or sensors) if they are required for a complete inspection.