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...

Pressure sensor leaking at the process connection: Checking seal, thread and installation correctly

If a pressure sensor leaks at the process connection after installation, the sensor itself is...

Finding pressure loss in a system: How a digital pressure gauge helps with troubleshooting

When a system loses pressure, the cause is not always immediately obvious. In practice, many...

Setting the measuring interval correctly on a temperature data logger

A temperature data logger is only truly meaningful if the measuring interval matches the application....

Testing RCD/FI switches: Correctly measuring tripping time and tripping current

FI switches, now usually referred to as RCDs, are among the most important protective devices...

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...

Moisture in the control cabinet: Why electronics can fail despite IP protection

A control cabinet may appear sealed from the outside and still develop moisture problems inside....

Retrofitting current transformers: How to measure currents without modifying the system

In many existing systems, currents need to be recorded retrospectively. The reason is often very...

Thermocouple responds too slowly: Correctly evaluating installation position, thermowell and response time

If a thermocouple appears to deliver incorrect values, the cause is not always faulty calibration...