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| The Microtrak II is a state of the art CMOS laser triangulation sensor for precise measurements of displacement, position, vibration and thickness. It is unaffected by surface texture, color or stray light. Measurement ranges are up to 40 mm at a standoff distance of 120 mm. |
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- Non-Contact Measurement for Distance / Motion / Vibration
- Absolute Position Sensing
- Sub-Nanometer Resolution
- Measurement Ranges to 500 µm
- Easy Integration
- High Bandwidth
The new PISeca™ single-electrode capacitive sensors from PI perform non-contact meas-urements of distance, position or motion against any kind of electrically conductive target. They feature the highest resolution and linearity available.
The PISeca™ single-electrode capacitive gauges are fundamentally very temperature stable, have excellent dynamics and are easy to work with. |
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In industrial processes where liquids, air or gases are used valves serve for dosing and control. There is a wide variety of valve types, butterfly or ball valves being the most common quarter-turn types.
In large plants these valves are seldom operated manually. Mechanical actuation is normally done by separate actuators. The valve position must be monitored electronically. This is necessary to give feedback to the controller when a certain position (e.g. "open" or "closed") is reached and to monitor the valves centrally from a control room.
Mechanical switches are still often used for position feedback on the actuator shaft. For other solutions several proximity switches are used together with a switching target for position detection. Disadvantage of these solutions: Mounting is mechanically complex. During switch mounting the signal wires can be reversed when they are connected in the top-mounted junction box. Where there are temperature fluctuations condensing humidity leads to corrosion and thus malfunction. |
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The new SMAT continuously detects the position of the cylinder piston within a range of 50 mm. It has an analogue output with an output signal in proportion to the piston position. The integrated OOR (out-of-range) sensor indicates if the piston is outside the sensing range. The connection for evaluating the 0 … 10 V and/or the 4 … 20 mA signal is made directly to analogue inputs.
Typical areas of application in object detection are as follows:
Press-fitting, clamping, position sensing, workpiece replacement
In process monitoring:
Sheet metal handling/production, wear monitoring, quality inspection
- The installation direction of the SMAT in the slot can be chosen freely.
- Contactless measuring principle = wear-free sensing.
- Measuring range is always 50 mm, regardless of cylinder; reproducibility 0.1 mm.
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Honeywell's miniature position sensors respond to the presence or the interruption of a magnetic field by producing either a digital or an analog output proportional to the magnetic field strength. These Hall-effect sensors have single and double sensing elements for mounting on IC chips. These extremely small sensors come in a variety of magnetic actuation types including omnipolar, unipolar, bipolar, bipolar latch, ratiometric and analog. Termination types include radial lead IC and surface mount. Some products are available on tape and reel.
Best Used For:
Speed and RPM sensing, brushless dc motor commutation, motor and fan control, tachometer and counter pickup, disc speed and tape rotation, magnetic encoding and flow rate sensing.
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Hall Effect Devices detect magnetic flux density (mainly produced by a permanent magnet) and are used in both movement and position sensing. By integrating the sensing element onto the same silicon as its control logic and interface circuitry, Melexis has produced sensor chips with various degrees of intelligence to suit most applications. Sensing the rotation of shafts (e.g. cam- and crank-shaft) in engine, monitoring movement in motors and actuators, sensing pedal, throttle and steering wheel position, Melexis Hall Devices offer a reliable, contactless method of movement and position detection.
Melexis is a technological leader for the design, development and testing of integrated Hall Effect Devices. Melexis Hall Effect Devices enable an optimal use of the smaller feature sizes of which semiconductor technology is capable today. Therefore, very sophisticated mixed analog-digital signal conditioning circuitry (such as Chopped Analog String, Digital Signal Processing Core, Microcontroller) can be integrated. Most of the devices can withstand the severe automotive conditions despite few external components.
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Hall-Effect Position Sensor W/ Linear Output Voltage (HL)
Non- contact magnetic sensors that are designed to respond to a wide range of positive or negative magnetic fields and can sense relatively small changes in a magnetic field. By having magnet as a target, this unit produces a Ratio-metric Rail-To-Rail linear output. It also has an internal amplifier to boost the output to a higher level. These sensors are ideal for applications such as magnetic flux measurement, displacement, and linear output rotary measurement.
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The RACO path-sensory system has been specially designed for exactly positioning and switching off electro-magnetic actuators in the final position. Not only is the position ascertained unconventionally by electro-magnetic means (e.g., gear-shifting mechanism) while doing so but it will also be determined via a close-coupled magnetic field without any movement.
The EPS consists of a printed circuit board and a magnetic holder with the magnet. The electronic positioning sensor (EPS) is integrated into the device%u2019s supplementary casing (A) on the motor shaft's end of the servo-motor or in the device's supplementary box (D) on the coupling casing. The installation, commissioning (starting up), maintenance (servicing) and upgrading is simplified in comparison with a conventional design that has mechanical limit switches and a shift transmission which must be adjusted individually.
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Features
All-electronically or reed contact
MZEK... can be fitted from above
MZ C... for Cylinders with 4 mm round slots
Absolutely wear-free
High reproducibility
Metal Case
Connecting Cabel 2,5 m (5 m) PUR or 0,3 m (0,6 m) PUR with knurled connector M8
Bright LED
Short-circuit-proof
Polarity-safe
Protection class IP 67
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One sensor, two adjustable switching points
Saves space, time and money
Simple alignment and definition of the switching point thanks to teach process
Easy mounting with only half the cabling work
Sensor sunk into the T-slot thanks to compact design
Applications: end position query to short hoist cylinders or intermediate position detection, e.g., for reducing piston speed |
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