Sensors

The receptor that is placed in the process for measuring the physical condi­

Tions is called a Sensor. The receptors, or the sensor elements, may use differ

Sensors

Measured. Especially important is the accuracy ot the measurement, hystere­sis, and reaction ability (time constant).

The mechanical shaping of encapsulation and protection is a critical fac­tor when the receptor is placed in an aggressive environment.

Even if the receptor by itself has high accuracy, the sensor may be unable to execute the measurement in a defined place. Quality and total accuracy de­pend on the combination of receptor, the converter for measured values, and mechanical protection. Mechanical protection can take the form of pockets in water and fluid and also assembly boxes which protect against pollution, hu­midity, and temperature in the surroundings or against electromagnetic trans­missions and noise from power-supplied pipes and cables.

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