ACFTD test dust
Air Cleaner Fine Test Dust (ACFTD)
Terminal
Local input and output unit in a data network
Temperature measurements in hydraulics
The temperature of the hydraulic fluid in hydraulic systems can be measured either with simple measurement devices (thermometer) or with a measuring device that issues signals to the control unit. The
Temperature measuring device
Device which measures the temperature or temperature difference of a medium. The measured value can be read directly (e.g. in the case of a liquid thermometer), but can also be fed to a display unit a
Temperature compensation in measuring technology
Several electrical sensors react more or less sensitively to temperature changes, which move the zero point and possibly change the sensitivity. They must therefore be balanced out by suitable measure
Temperature response
Defined systematic relationship between a physical variable and the temperature such that the physical variable is changed by changing the temperature. Example: Thermal expansion, change of the specif
Temperature drift
Unwanted change of a physical variable over time due to the influence of temperature.
Temperature range
Area between the minimum and the maximum permitted temperature (e.g. of the medium, environment, etc.)
Flow force
A flowing fluid exerts flow forces in the case of changes to the speed and/or direction, which are particularly noticeable on the control pistons (control spools) of directional valves . They increase
Flow velocity in pipelines and valves
As the flow losses are determined in pipelines using the square of the flow velocity, certain velocity values should not be exceeded. These are tiered according to the pressure in the system and the p