These sensors require that the target
be a magnet, such as magnets embedded in gear teeth,
blade tips, or ring magnets. They also must be oriented
to the direction of target movement. The advantage of
this series, versus other Hall Effect types, is that
they can sense longer air gap distances, thereby
enabling the sensor to effectively sense targets as much
as 0.200" to 0.250" away, depending on target geometry
and magnetic field strength. These sensors integrate a
preamplifier/signal conditioner within the sensor
housing that provides excellent noise immunity and
greater transmission capability. They also have a unique
circuit design that offers complete protection in the
event of connection mis-wiring. The output frequency of
these sensors has a square pulse waveform (digital) that
directly relates to the number of turbine blades, gear
teeth, etc. that have been sensed. These pulses, in
turn, can be correlated to determine flow rate, RPM, or
velocity.
Product
Specifications
HM
series Hall Effect sensors are manufactured on a custom
basis to meet the specifications and requirements of a
particular application. MSI can make
custom Hall Effect sensors in customer-specified
lengths, diameters, configurations, mounting threads
(e.g., metric) as well as with different operating
specifications and options like pigtail leads, NPT
threads for explosion proof applications, etc. In
addition, for lower cost, high volume applications, MSI
manufactures Hall Effect sensors that contain only the
Hall Effect element, without special circuitry to guard
against incorrect hook-up. Please contact us and we
would be happy to make a product that meets your
specifications.
Features and
Specifications
Input
Power:
4.7 to 24 Vdc regulated, 15 mA maximum @
no load
Reverse polarity
protected
Pulse Output
Options:
TTL/CMOS (Standard); fan-out
of 5 TTL/CMOS loads
Open collector; maximum OFF
voltage 24Vdc, maximum ON current 50
mA
Up to
0.250" dependent on target geometry and sensor
construction
Interconnection Options:
Three (3) pin MIL-C-5015 type
connector with gold plated pins; mates with
MS3106-10SL-3S; other connector types upon
request
Pigtail with wires or cable
NPT threaded body with wire or
cable pigtail for explosion proof
environments
Pin/Pigtail Connections:
Pin A (Red): Input Power (+)
Pin B (White): Pulse 1 Output (+)
Pin C (Black): Common
(-)
Physical Features:
Operating temperature:
-40°C to +125°C with connector; -40°C to
+105°C with
pigtail
NOTE: units
that operate up to +150 °C are also available
Storage temperature: -40°C to
+150°C with connector; -40°C to +105°C with
pigtail
Body material: 300 series
stainless steel
Encapsulation: epoxy potting
or hermetically sealed, welded
construction
Orientation:
Alignment of the sensor to target
rotation is required for optimal performance,
ensuring proper orientation of the hall effect
element to the magnetic
field
Approvals:
CE
compliant to EMC Directive 89/336/EEC for use in
residential, commercial, light industrial and
heavy industrial
environments
Warranty:
Unconditional one (1) year warranty if
used within specifications