When the liquid level rises and covers the tuning fork it will vibrate at a lower frequency. In operation a piezoelectric oscillator is used to vibrate the tuning fork at its natural frequency for air.Ī second piezoelectric device is used to pick-up the frequency of the vibrating tuning fork. Vibrating tuning fork liquid level switches are threshold contact trip devices which typically consist of a tuning fork which extends out from the switch housing. The liquid level switch output can then be utilised by other instrumentation to open a valve, illuminate a warning lamp, activate an audible alarm, or switch on a pump. Vibrating tuning fork devices for monitoring liquid level and activating switch contacts at predetermined liquid level thresholds.Ī vibrating tuning fork liquid level switch is an instrument for monitoring the height of a liquid and tripping a relay contact switch or transmitting a solid state relay switch output when a maximum, minimum or intermediate level has been reached.
0 kommentar(er)
