The sense electrode and the instrument casing / vessel wall form an electrical capacitor. When in air the dielectric constant is 1 but when covered it is that of the material and so there is a change in the probe capacitance.
Output Type: PNP Standard
Output: Max 100mA, Short-circuit protected
A Low alternating voltage is applied between the sense electrode and the probe ground. When the liquid reaches the point level , a conductive path is established between the two.
• Mushroom shape
• Push to lock, turn clockwise to reset
• Push to lock, unlock by turning the key
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