Measuring transformers for energy measurement: Why current transformers and measuring devices must match

If an energy meter shows incorrect, too low or even negative values after installation, the...

Connecting a temperature probe with 4–20 mA: when a transmitter is useful

Temperaturfühler wie Pt100, Pt1000 oder Thermoelemente können direkt an eine SPS, Anzeige oder einen Regler...

Gas detector for confined spaces: performing a pre-entry test correctly before entry

Before entering confined spaces, vessels, tanks, shafts, silos or ducts, it must be clarified whether...

Machine testing according to VDE 0113 / EN 60204-1: testing protective conductor, insulation, high voltage and residual voltage

The electrical equipment of machines must be safely designed, tested and documented. For machine builders,...

Process calibrator or simulator: selecting the right calibration device for pressure, Pt100, thermocouple and 4–20 mA

Anyone who wants to check transmitters, sensors, pressure transmitters, temperature probes or PLC inputs quickly...

Thermocouple Type J: evaluating measuring range, connection and typical errors correctly

The thermocouple Type J is a proven temperature sensor for industrial applications. It is often...

Calibrating a 4–20 mA signal: checking transmitters, current loops and PLC inputs correctly

The 4–20 mA signal is one of the most important standard signals in industrial measurement...

Mobile ultrasonic flow meter: checking flow without installing a fixed measuring device

A mobile ultrasonic flow meter is ideal when flow only needs to be checked temporarily....

RCD tripping with a voltage tester: understanding load activation correctly and using it safely

When working on electrical installations, it can happen that an RCD trips during testing. This...

Temperature probe responds too slowly: causes related to installation, thermowell and measuring point

When a temperature probe responds too slowly, poor accuracy or a defective sensor is often...