Prioritizing compressed air leaks economically: evaluate leak rate, operating time and energy costs together
During a compressed air audit, 80, 150 or even several hundred individual leaks can be...
Measuring dose rate behind shielding: correctly account for scattered radiation, geometry and measurement position
A radiation source is located behind massive shielding. A significantly elevated dose rate was measured...
Measuring moisture in SF6 after maintenance work: assess dew point and residual moisture before recommissioning
An SF6 gas-insulated switchgear system has been opened for maintenance work. The gas was previously...
Conductive or inductive conductivity measurement: evaluate electrode contact and contamination according to the medium
In a water treatment system, the electrical conductivity of clean process water is reliably measured...
Measuring differential pressure across a hydrogen filter: safely detecting small pressure drops at high line pressure
A hydrogen line is operating, for example, at a pressure of 200 bar. A filter...
Evaluating SITRANS ultrasonic diagnostic values: use signal strength and transit time to verify installation
A SITRANS clamp-on ultrasonic flowmeter has been installed and is displaying a plausible flow value....
Correctly inserting a melt temperature sensor in an extruder: avoid immersion depth and flow profile as measurement errors
An extruder appears to be running steadily. Barrel temperatures and heating bands are at their...
Handling gaps in time series: clearly distinguish missing measurements, zero values and interpolated values
A pressure sensor sends one measured value per minute to an edge gateway. In the...
Current transformers with high inrush currents: correctly assess saturation, transformation ratio and burden
An electric motor draws a current of approximately 80 A during normal operation. A current...
Insulation measurement in installations with surge protection: consider SPDs and sensitive electronics before testing
The insulation resistance of an electrical installation is to be tested. The circuit has been...