SHR-2 inductive sensor, MHR-2 magnet

Description:
The sensor housing is made of factory-finished steel in
which the electric sensing element is embedded (without
electronic components). At the end of the housing there is a
Pg16 bushing. In the bushing there is a cable with a
protective rubber hose. The rubber hose is resistant to
perforation, falling material and accidental shock and thus
able to protect the cable. The cable with the protection is
terminated in a plastic box (standard equipment). The box
can be delivered in other designs as well, e.g. cast iron etc.
Mounting and principle:
The sensor is based on the magnetic induction principle.
The magnet is mounted on the mobile part of the controlled
device (conveyor belt angle pulley, mobile part of a
vibratory feeder, sieve in a sorter, etc.) The distance
between the MHR-2 magnet and the sensor is from 50mm
to 250mm; the function will stay the same. This distance
warrants minimum damage to the sensor caused by
movements of the axially rotating part. The maximum
distance is determined by the position of the magnet in the
steel construction; this limit can be determined after having
performed tests in the given application.
The movement of the magnet around the sensor induces a
voltage impulse in the sensor. This impulse is further
processed in the VHR-10Z amplifier. The amplified and
shaped voltage impulse can be used as input signal for the
VHR 10 evaluation unit or for the control system.

Use
The SHR 2 inductive sensor and the MHR 2 magnet
assembly is designed to follow rotational or oscillatory
movement. Their sturdy construction enables their use in
the severest operating conditions, e.g. control of conveyor
belts, sorters or vibratory feeders in quarries. They are
characterized by high mechanical ruggedness and reliable
service in a wide temperature range.