Category Archives: Beitrag
Digital multimeter or two-pole voltage tester: Which device is right and when?
Digital multimeters and two-pole voltage testers are often used for similar tasks in practice. Both...
4–20 mA pressure sensor provides no signal: Checking the wiring correctly
If a 4–20 mA pressure sensor does not provide a signal, a sensor defect is...
Insulation measurement according to VDE: Why it is important and which errors occur frequently
Insulation measurement is one of the most important tests in electrical installations. It shows whether...
Motor draws too much current: Detecting overload with a clamp meter
If a motor draws too much current, this is an important warning signal. The cause...
Transit-Time or Doppler: Which ultrasonic measuring principle suits the medium?
Ultrasonic flow meters are often used when liquids need to be measured contactlessly, retrofitted or...
Multimeter measures incorrect values: Why LoZ, TRMS and measurement category are decisive
If a multimeter appears to display incorrect voltages or unusual values, the measuring instrument is...
Differential pressure transmitter delivers implausible values: Check manifold, impulse lines and zero adjustment
If a differential pressure transmitter delivers implausible values, the cause is not always the measuring...
Detecting phase loss or unbalanced load: Current measurement in three-phase systems
In three-phase systems, the currents on the phase conductors L1, L2 and L3 should match...
Testing wallboxes and charging stations: Which measurements are important for EVSE systems
Wallboxes and AC charging stations are now part of the electrical infrastructure in many companies,...
Gas detector for methane, CO₂, VOC or refrigerants: Which sensor technology is suitable?
A gas detector is not just a gas detector. In practice, users often search for...