Conductivity
Calculation for level relays and conductive sensors
Electrodes - Relays
The level of conductive liquids can be controlled by the combination of conductive sensors and level relays. These ones measure the conductivity of the liquid and carry out appropriate maneuvers on the control elements of the installation. Conductive sensors are mere transmitters of the very low electrical current supplied through the relay.
Electrical conductivity of materials is usually expressed in Siemens, and is the inverse magnitude of electrical resistance.
Pressure
Calculation for pressure sensors TPSP and TPSM
Pressure sensors
Pressure sensors take different physical shape depending on their mode of application. Deep wells or tanks where access is not available from the bottom, should be used submersible models installed from its own cable. Otherwise, where the sensor can be installed on the threaded bottom of the tank should be used surface mounting models.It is essential to know the height of measurement or the pressure on the sensor when the liquid is at maximum level.The density of the liquid is a key factor for the adjustment of the sensor.
R.P.M.
Calculation for anemometers and tachometer relays
PHAA / DHAA
Select the anemometer in accordance with their mechanical and electrical characteristics. See the technical documentation of each model by clicking on its link. Value "RPM" is to be set in the tachometer relay PHAA/DHAA you connect to the anemometer.
