Category Archives: Beitrag
Comparing compressed-air leak rates at different network pressures: reference measured values to a common condition
During a compressed-air audit, a leak rate of 63 Nl/min is measured at a leaking...
Testing tyre inflator gauges without an external compressed-air supply: using the hand pump, buffer reservoir and fine adjustment correctly
A tyre inflator gauge is to be tested directly at a petrol station. However, no...
Moisture in a load cell junction box: systematically checking leakage currents, signal drift and sealing
A vessel scale with four load cells suddenly develops a slowly drifting zero point after...
Installing a radar level sensor in an angled nozzle: correctly adjusting antenna alignment and reflection direction
An existing storage tank has a process nozzle welded into the roof at an angle....
Installing impulse lines for liquids: correctly managing gas bubbles, elevation differences and transmitter position
A flow measurement using an orifice plate operates with a differential pressure range of, for...
Measuring particles in compressed air: correctly accounting for pressure level, sampling and counting volume
A compressed-air line operates, for example, at 8 bar. To check the compressed-air quality, a...
pH measurement in ultrapure water: correctly handling low conductivity and unstable readings
A pH electrode is immersed in freshly produced ultrapure water. The measuring instrument has been...
Measuring dew point in high-pressure hydrogen: correctly accounting for sample pressure reduction and pressure dependence
The residual moisture in a hydrogen system is to be monitored. The H₂ in the...
Reusing a Dynisco sensor after removal: checking thread, diaphragm and sealing surface before reinstallation
A Dynisco melt pressure sensor is removed from the extruder during maintenance. At first glance,...
Shunt heats up under load: considering temperature coefficient and cooling as measurement errors
A DC circuit is monitored using a measuring shunt. Immediately after switch-on, the measuring instrument...