Page 1178 - The Mechatronics Handbook
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OUTPUT
OUTPUT OUTPUT OUTPUT
DISPLACEMENT GUIDE ROD HIGH
SENSOR PROXIMITY
SENSOR
FLOAT
INPUT
LIQUID LEVEL
LOW
CONTINUOUS POINT
FIGURE 45.16 Float-type liquid level transducers.
DIFFERENTIAL OUTPUT OUTPUT
PRESSURE
TRANSDUCER
INPUT INPUT
LIQUID LEVEL LIQUID LEVEL
VENTED PRESSURIZED
FIGURE 45.17 Hydrostatic pressure liquid level transducers.
OUTPUT OUTPUT
HIGH
METAL OUTPUT
TANK
INPUT INPUT
WALL INPUT CAPACITANCE
SENSOR
LIQUID OPEN LIQUID SIGHT GAUGE
LEVEL END LEVEL
LIQUID LEVEL OUTPUT
LOW
(a) ROD AND TANK WALL ROD AND CYLINDER (b)
FIGURE 45.18 Capacitive-type liquid level transducers: (a) capacitive probes, (b) capacitive switches.
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