Metering Insights

Is there a Lifetime Calibration?

Electronic energy meters are adjusted for life-time. A recalibration has to be done by country rules and regulations.

What will be the recorded demand?

What will be the recorded demand if a constant load of 1 kW is applied through a 30 minute demand meter ?

How to get a Clear Tamper Token?

A clear tamper token is required to unlock a STS meter showing the tamper sign. Only the local power company can issue this token code.

What is a Load-Switch?

A latching relay keeps its contact position indefinitely without power applied to the coil.

Make the Most of Portable Meter Test

In order to protect the utility revenue it's essential to do regular on-site tests on meter installations.

Johannesburg Ransomware Attack

Cyberattacks against critical infrastructure have become common…

Security for Optical Ports on Energy Meters

Optical ports provide local access for service engineers during installation or maintenance of energy meters. Households have physical access to their energy meter and might try to get access to...

European Accreditation

The European Accreditation Association has per country one member. This members are allowed to approve test laboratories for calibration.

What is DLMS/COSEM ?

DLMS stands for Device Language Message Specification, a generalised concept for abstract modelling of communication entities

Calculation methods for energy

We've got several questions related to the different recording methods for electrical energy meters. Here is the behaviour with different settings…

General information for wiring diagrams

CLOU follows the DIN EN 81346-2 for marking and identification of components inside of automated test equipment.

Environmental Conditions For Meter Test

Laboratory meter test equipment should operate under defined climatic conditions.