Flow switches historical foreword
In antiquity, the flow measurement was one of the first means of time measurement. But it was not until the steam engines development and the need to control their water supply, that measuring devices were developed.
Flow switches technical foreword
A certain force is required to actuate the electrical contact device. It can range from a few tenths of grams for systems with reed contacts with a power rating of 10 to 20VA (0.5Amp), to 50 grams for snap action micro-switches with a 5Amp 250V ratin...
Conversion table: Liter /min and liter/hour into US gallon/min and US gallon/ hour
Float level switches historical introduction
If the level measurement, especially for meteorological purposes seems to date back to the 4th or 5th century BC in India, the development of steam boilers for locomotives and low pressure steam boilers for central heating in the first quarter of the...
Float level switches technical introduction
Selecting a magnet for a level switch application must take into account the characteristics of the liquid in which it will be immersed, of the temperature at which it will be subjected, of its corrosion resistance, of the magnetic field required to operate...