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No One Protects Large Turbines like GE
The transducers in this category measure changes in machine case positions as they expand or contract, rotary or linear position of control valves, or wicket gate position on hydroelectric turbines. They are typically used in conjunction with other transducers as part of a Turbine Supervisory Instrumentation (TSI) package, designed to monitor all critical machinery parameters on large steam, gas, or hydraulic turbines used in power generation applications.
The 3300 XL Rotary Position Transducer (RPT)
This innovative transducer incorporates a proximity probe observing an eccentric cam. The changing gap between probe tip and cam corresponds to degrees of rotation, and is specifically designed for valve position measurements. It is a superior alternative to older potentiometer transducers which have poor reliability.
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PRAS1: Contact-Free 360° Angle Sensor in Ultra-Compact M-12 Housing
ASM GmbH sets the new benchmark for angular position sensors with the new development of a magnetic angle sensor in a very compact M12 housing. The PRAS1 sensor provides absolute position measurement over full 360° sensing range and is part of the successful POSIROT® family of magnetic angular sensors. With only a 1/2 inch diameter and overall length of less than 2 inches, this small sensor saves space and can be installed in the tightest locations.
The contact-free and wear-free angular measurement of 0° to 360° is achieved by using a position magnet. PRAS1 has a typical resolution of 0.1° and yields an analog signal through the use of a D/A converter. Three different analog outputs are available: 4-20 mA, 0.5-4.5 V and 0.5-10V. The industrial housing is rated up to IP68.
With its dependable and rugged design, the PRAS1 angle sensor is well suited for angle monitoring in a wide variety of heavy duty applications such as factory automation equipment, variable valve controls, mobile working machines, etc.
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Gill angle position sensors are ideal for monitoring angular position in applications where high dither life of the angle sensor is essential. All Gill angle sensors use inductive technology to sense the position of a metallic object which is mounted to the application. There is no contact between the sensor and the moving part which gives infinite dither life.
Gill angle sensors are fully sealed with no internal moving parts, ideal for applications subject to extreme environments where grime, moisture and vibration are factors.
All of the angle sensors below are capable of monitoring 0-45 and can be configured to operate over the exact measurement range required, giving the highest possible accuracy for each application.
Sensors suitable for Angular position applications are shown below. Please select the sensor which best suits your application to view technical specifications, dimension details and application ideas.
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General description
Features
- Patented non-contact angular position sensor
- Magnet/sensor orientation provides intrinsically linear output over 120 degree maximum travel without the need for electrical compensation
- Provided with programmed output or end-user re-programmable to compensate for tolerances in your final assembly
- Programmable offset, gain, temperature compensation, and clamping voltage
- Fully encapsulated electronics to IEC IP67
Optional Features
- Redundant dual outputs
- Sealed mechanical portions to IP67
- Operating temperature range to 125°C
- Return spring
Applications
- Throttle and valve position sensing
- User interface controls (vehicles, gaming)
- Pedal position sensing
- Implement position sensing
- Gear selection
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Electronic angle-measurement
with signal-exit 4-20 mA
for example angle-measurement at the boom-crane.
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NAI offers resolver-based absolute Position Sensors for the packaging, material handling, and automated manufacturing industries. They include high-accuracy and rugged designs that simplify machine set-up, reduce overall costs, extend product life, and provide a very high level of application flexibility.
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The RT8000 Series rotational transducer is designed to track the position of a rotating shaft or object. This series is available in any of 3 analog industry-standard output signals in a wide assortment of full stroke ranges starting at 0-45° all the way up to 200 turns.
Environmental suitability: NEMA 6, IP68
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The combination of a coder with ends of the road in the same case increases the reliability and the safety of the machines, because of two independent checking circuits in the same case.
The coder integrated provided information uninterrupted of the movement in 5-30 VDC with a resolution from 100 to 5000 increments. The programmable ends of the road, the catch of origin are regulated freely with the position wished.
The adjustment of the ends of the road is very simple: the case is assembled on the machine, the machine is then led manually to its limiting position, the end of the road is positioned with a key of programming. This procedure is repeated for the other end of the road.
The case is well protects by its cap against dust or any external intervention; all the signals are cabled on a connector with the back of the case.
These cases can also be provided with potentiometers.
COMP' AUT will be able to best advise the customer in the choice of the case being appropriate for its application.
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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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- 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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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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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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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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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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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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World's First Datum Algorithm
• Stable Detection of Metal Targets
• Stable Detection of Black Targets (Rubber)
• Ultra-Long Range up to 1m (39.37")
• Tough, Rugged: IP-67 Enclosure Rating
The NEW GV Series Digital CMOS Laser Sensor provides unmatched performance, even on metal and black (rubber) targets. Multiple models available to meet all your laser sensing needs.
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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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Description:
These Hall-effect devices contain a monolithic integrated circuit which incorporates a Hall element, a linear amplifier, a threshold amplifier, and Schmitt trigger on a single Hallogic® silicon chip. Included on-chip is a band gap voltage regulator to allow operation with a wide range of supply voltages. These devices feature logic level output and provide up to 21 mA of sink current. This allows direct driving of more than 7 TTL loads or any standard logic family using power supplies ranging from 4.5 to 24 volts. Output amplitude is constant at switching frequencies from DC to over 200 kHz. The Uni-Polar turns on with a (logic level “0”) after a sufficient magnetic field from the south pole of a magnet approached the symbolized face of the device (Operating Point) and turns off (logic level “1”) after the magnetic field reached a minimum value. The Bi-Polar latch device turns on (logic level “0”) in the presence of a magnetic south pole and turn off (logic level “1”) when subjected to a magnetic north pole. Both magnetic poles are necessary for operation for Bi-Polar devices. This feature makes these sensors ideal for applications in noncontact switching operations, brushless DC motors and for use with multiple pole magnets.
Features:
- Designed for non-contact switching operations
- Operates over broad range of supply voltages (4.5 V to 24 V)
- Operates with excellent temperature stability in harsh environments
- Drive capability up to 7 TTL loads
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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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Magnetic Reed Switches
Magnetic reed switches are available on nearly all air cylinders offered with Ultramation Linear Thrusters. Reed switches are actuated by the close proximity of a magnet which is included within the cylinder as part of the piston assembly. A reed switch contains a normally open sealed reed that closes or makes in the presence of a magnetic field. The reed switch returns to the normally open state once the magnetic field is removed. Reed switches, both with and without LED position indicators, are used in the vast majority of applications where the magnetic piston briefly comes to rest at each end of the stroke.
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MZCK 03
general data
type magneto-resistive
version C-slots
nominal operation point 28 Gauss
electrical data
switching frequency < 200 kHz
response time / release time < 0,0025 ms
output current < 200 mA
voltage supply range +Vs 5 ... 30 VDC
mechanical data
cable output lateral
depth 9 mm
width / diameter 3,7 mm
mbient conditions
operating temperature -10 ... 70 °C
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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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· High grade PSD (Position Sensing Device) is implemented in FGS (Foreground Suppression) system.
· Ideal for sensing thin objects lying on conveyor, etc.
· Numerical display for easier settings.
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MRS Cylinders
* The Bimba MRS® Magnetic Reed Switch Air Cylinders are specifically designed to operate Bimba position sensing switches to actuate programmable controllers, relays, solenoids, timers, or any other electrically operated equipment.
* MRS cylinders have an additional groove in the piston to accommodate a magnet. They differ from the Moption because they combine features of the "Z" line with Original Line construction. Type 303 stainless steel rods are standard.
* Options at no additional charge include Magnalube G, no thread, and switch track for standard reed switches.
* Bore sizes available are 9/16", 3/4", 1-1/16", 1-1/4", 1-1/2", 1-3/4", 2", and 2-1/2".
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