Datasheet

Superior Measurement. Accurate. Reliable. Thinking.
SMART Position Sensor,
35 mm, 75 mm and 225 mm
Linear Configurations
DESCRIPTION
The SMART Position Sensor is one of the most durable,
adaptable, and lightweight linear position sensors available in the
industry, enabling highly accurate motion control and improving
operation efficiency and safety. Its simple, non-contact design
eliminates mechanical failure mechanisms, reducing wear and
tear, improving reliability and durability, and minimizing downtime.
The SMART Position Sensor is a non-contacting sensing solution
for absolute position sensing with enhanced accuracy. It senses
the position of a magnet relative to the sensor in one of three
available sensing ranges:
• 0 mm to 35 mm [0 in to 1.38 in]
• 0 mm to 75 mm [0 in to 2.95 in]
• 0 mm to 225 mm [0 in to 8.86 in]
These sensors uses a patented combination of an ASIC
(Application-Specic Integrated Circuit) and an array of MR
(magnetoresistive) sensors to accurately and reliably determine
the position of a magnet attached to a moving object so that the
object’s position can be determined or controlled.
The MR array measures the output of the MR sensors mounted
along the magnet’s direction of travel. The output and the MR
sensor sequence determine the nearest pair of MR sensors to
the center of the magnet location. The output of these two MR
sensors is then used to determine the position of the magnet
between them.
With this sensor, Honeywell has utilized MR technology through
the ASIC at a level never before accomplished.
The SMART Position Sensor is available in both analog output
(35 mm, 75 mm and 225 mm congurations) and digital output
(225 mm conguration only) for use in control systems requiring
an RS232-type interface with a 57.6 kbits/s baud rate.
FEATURES AND BENEFITS
• Reliable, durable: Non-contact design reduces wear and tear,
improving reliability and durability, and minimizing downtime
Easy to install: Installation takes four simple steps
(1: position sensor; 2: drill holes; 3: mount sensor; 4: locate
magnet actuator/make electrical connection) vs. up to 14 steps
some competitive products require, simplifying installation and
reducing set-up costs
• Rugged: As there are no moving parts within the sensor,
Honeywell utilizes unique packaging materials that make
the sensor more resistant to vibration, shock, and extreme
temperatures
 Flexible: Air gap of up to 8,5 ±1,0 mm [0.334 ±0.039 in]
between sensor and magnet expands application opportunities;
variety of output options (analog standard and other RS232-
type baud rates) are available, expanding application
opportunities
 Cost effective: Adaptable, non-contacting design allows
customers to eliminate unnecessary connections for
installation, thereby reducing installation steps, installation time,
and components
• Accurate: 35 mm conguration accurately measures values
down to 0,04 mm [0.0016 in], 75 mm conguration accurately
measures values down to 0,05 mm [0.002 in], while 225 mm
conguration accurately measures value down to 0,14 mm
[0.0055 in] (analog) and 0,0035 mm [0.000137 in] (digital)
 Adaptable: Electronics on board allow for exible packaging
and component compatibility with existing systems
 Lightweight: More than 50% lighter in weight than LVDT
(Linear Variable Differential Transformer) technology
• Simplies design-in: Easy-to-congure sensor array ts
virtually any linear movement path
 Self-diagnostics feature: Can reduce equipment downtime by
providing predictive maintenance input
• Combined patented MR sensor and ASIC technology:
Provides enhanced differentiation and performance
• IP67 and IP69K sealing: allow use in many harsh applications
• Qualied for automotive grade EMI/EMC specication:
Provides protection against environmental frequencies (35 mm
conguration only)
• RoHS-compliant materials: Meet Directive 2002/95/EC