Category Archives: Beitrag
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...
Calibrating a digital pressure gauge or just checking it? What users should know
Digital pressure gauges are frequently used as reference or control instruments in industry, maintenance, service,...
Operating current transformers safely: Why the secondary circuit must never be open
Current transformers are used in electrical installations to convert high currents into a smaller, measurable...
Motor running in the wrong direction: Correctly checking phase rotation with a voltage tester
If a three-phase motor suddenly runs in the wrong direction after installation, the cause is...
Setting and checking pressure switches with a digital pressure gauge
Pressure switches are used in many industrial systems to switch pumps, compressors, hydraulic systems, compressed...