Tecfluid LD61 - Manual (Page 3)

RECEPTION
The LD61 level detectors are supplied ready for installation and operation.
They are supplied packed for their protection during storage and haulage.
To handle the detectors, they should always be held by the head, never by the vibrating
fork.
The vibrating fork should not be modified or bent, as this can damage the detector beyond
repair.
3
WORKING PRINCIPLE
The LD61 level switch is based on the variation
of the natural resonant frequency of a vibrating
fork, when it comes into contact with a liquid.
This variation is detected by the internal
electronics and is used to determine the state
of the output .
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G1 or 1 NPT Thread LD61 ML