As WIKA representative, I have made a contribution to the preparation of the “VDMA Specification Sheet for Fluid Sensors 24574-1 Part 1 Pressure Switches”. What were the objectives of this VDMA committee? Very simple: The objective of the VDMA specification is to …
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Benefits of the LED display of the pressure switch PSD-30
| Jürgen Reiser | PressureThe most important customer requirements for an instrument display are: durable, robust, and good readability of the active pressure even from a distance of up to 3 m, even in poor light conditions. Red LED displays are still the most widely used technology in the …
Aim and purpose of a vent hole in pressure sensors
| Michèle Beyer | PressureIn so-called “gauge sensors” pressure is always measured relative to the currently prevailing ambient pressure. However, the ambient pressure is by no means constant. It is location- and height-dependent and changes with the weather. This means that for a …
Unified colour codes and cable assignment for cable wires of pressure sensors
| Michèle Beyer | PressureWhy are there no unified colour codes for cable wires of the pressure sensors? This question is entirely justified, because unified wire colours would simplify everything. Not only the manufacturer's different cable versions but also the documentation and installation …
Identification of absolute pressure and relative pressure measuring ranges for pressure sensors
| Michèle Beyer | PressureHow are absolute and relative pressure measuring ranges distinguished? There are considerable international differences. They can be explained in the following example: Europe: 0 … 10 bar / 0 … 10 bar abs America: 0 … 150 psig / 150 psia In Europe only the …