Inductive Velocity Sensor MSZ214/218
Description
Velocity sensors MSZ214 and MSZ218 are electro-magnetictransducers with self excitation.
MSZ214 has a diameter of 14 mm (M14 thread) and MSZ218 a
diameter of 18 mm (M18 thread).
Features
â— Contactless sensing of mechanical motion such as the rotational speed of drives or shafts.
â— Pulses are generated by the movement of ferrous gear teeth, for example, as they pass the sensor head.
â— The electronic control circuitry and sensor head are designed as an
integral unit.
â— The electronic control circuitry is reverse polarity protected.
â— A digital output is available corresponding to the frequency of movement past the sensor.
MSZ214 MSZ218
â— Available either with 2 m permanent cable or with 3-pole connector
Mode of operation Technical data
Mechanical data: Outer thread metric
MSZ214M 14x1 MSZ218M 18x1 Housing stainless steel 1.4305/AISI 303Max. tightening torque50 Nm with MSZ214 100 Nm with MSZ218Max. pull out force (connection cable) 50 N Max. pressure (sensor face)25 bar/362.5 PSI
Degree of protection(IEC 529/DIN 40050)with cable IP67
3
with connectorIP65Vibration ±0.76 mm (55 Hz),to IEC 60068-2-6;
Ordering information
10 frequency cycles/axisShock 30 g (11 ms)
Type No. MSZInductive Velocity Sensor to IEC 60068-2-27Connection 2 m three-wire cable or
214 diameter/thread M14x1 218 diameter/thread M18x1 Version 3-pole connector
M stainless steel 1.4305/AISI 303 Temperature ranges:
Output signal 1 open collector 40 V/40 mA with connector-25 °C...+80 °C
with cable permanently connected -30 °C...+85 °C
Connection A 2 m cable, with open end B 3-pole connector with cable box, sensor face area-30 °C...+125 °C
without cable Voltage supply:
MSZ214 -M1A ordering example U
b DC 5 V...36 V Notes: The max. admissible residual ripple is 10 %, but not less than the minimum voltage or more than the maximum voltage.
The supply voltage has no influence on the minimum required
Output
actuator speed and the useful frequency range of the sensor. Digital frequency outputOutput frequency Supply current (without load): I
o (U
b = 5 V) 5 mA f
out = Z x n/60 (Hz) I
o (U
b = 36 V) 8 mA Z = number of teeth on the pick-upn = rotational speed of the pick-up in 1/min (rpm)Open collector - NPNU Electrical tests: ESD - test to VDE 0834-2, class 3
EMC - test to IEC 60065(sec)96, class 3 a (U
b ≥ 15 V); class 3 b (U
b <15 V)
A ferro magnet actuator such as a gear, screw-head or slot in a shaft, passes near to the sensor face, causing the magnetic field to change such that voltage is induced in the coil of the sensor. This voltage is
converted into a digital output signal by means of a comparator and
made available to the user via a transistor output. The output
frequency is directly proportional to the actuator speed.
As this principle is based on voltage induction, the actuator needs to have a certain minimum circumferential speed in order to induce a
voltage high enough to be evaluated. A rotational motion from “zero” speed cannot therefore be detected (see diagram “Operating range”
on next page). The benefit of this principle is the high upper frequency
limit of > 20 kHz.
max = 40 VI
max = 40 mAWith integral overload protection. Issue A
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