Instruments from this series are fitted with a flexible arm
mecanism which allows the device to withstand impacts or
vibrations without set point drifting.
As load created by the sensing element is directly opposed
to the load from the spring, this arm undergoes no force
which allows a linearity of measurement and dead band
(Patent n° 86.08.498).
Set point is selected through external knob while dead
band is adjusted from inside.
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