Author Archives: Lukas Achtelik
Melt Pressure Sensor Drifts After Temperature Changes: Correctly Assessing Zero Shift and Warm-Up Time
The extruder is heated up and the melt pressure sensor initially indicates 0 bar while...
Parameterising SITRANS LR Radar: Correctly Setting Up False Echo Suppression, Near Range and Tank Geometry
A SITRANS LR radar sensor is mechanically installed correctly on the tank but indicates almost...
Selecting the Correct MINIMESS Series: Properly Identifying 1215, 1615, 1620 or 1604
An existing test coupling looks like MINIMESS at first glance. However, the test hose cannot...
Infrared Thermometer on Bare Metal: Correctly Managing Emissivity, Reflections and Spot Size
A bare stainless-steel pipe feels noticeably hot, yet the infrared thermometer shows only 38 °C....
Building a Redundant 24 V Power Supply: Correctly Planning Decoupling, Load Sharing and Failure Signalling
Two 24 V power supplies are installed next to each other in the control cabinet...
Planning MQTT Topics for Measurement Data: Correctly Representing Units, Plant Structure and Quality Status
A pressure sensor sends 6.42. An energy meter provides 18450. A temperature transmitter sends 72.3....
Correctly Zeroing a Contamination Monitor: Accounting for Background, Efficiency and Measuring Distance
A contamination monitor already shows 20 counts per second on a supposedly clean surface. Does...
SF₆ Leak Detector Shows Fluctuating Values: Correctly Checking Background Concentration and Sensitivity
During SF₆ leak detection, the cause initially seems obvious: The probe is held near a...
Finding Insulation Faults in PV Strings: Systematically Identifying Polarity, Ground Faults and Moisture
The inverter reports an excessively low insulation resistance, fails to start or repeatedly shuts down...
Flow Switch Operates Unreliably: Checking Installation Position, Minimum Flow and Hysteresis
A flow switch should reliably detect whether a sufficient quantity of medium is flowing in...