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Position Sensors

Megacraft Enterprises Pvt Ltd offers a wide range of very reasonably priced Intelligent & Non-Intelligent long life Rotary and Linear Sensors like servo mount rotary sensor, wire wound rotary sensor, industrial rotary sensor, rotary sensor for automation. They include Setting Devices; From simple resistive or digital output to Customised applications having multiple processed voltage and current outputs for scaling, calibration, linearisation etc. We offers various technologies from simple wire wound; card and mandrel wound, conductive plastic; screen printed and co-moulded and contactless magnetostrictive.

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Hall effect sensors

Hall effect angle sensor substitute potentiometer Long life industrial hall effect rotary sensors Magnetic encoders with contactless sensor system Bush, flange or kit mounting versions Analog V, mA, PWM, Digital, SPI, SSI, Incremental TTL output Shock and vibration proof, IP65 Used for feedback sensing, rotary encoder, angle sensor, setting device, panel components, ROTASET www.megacraft.net or www.megatron.eu

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Rotary sensor

Components consisting of precision mechanics and high resolution electronics to measure and detect the angle position of any rotary movement. The actuator will be fixed by coupling to the shaft. It moves the pointer over the indicator and displays the angle equivalent of voltage, resistance or current Extra long life angle sensors suitable for automatic setting and all rotary feedback sensing applications angle sensor servo mount Single or tandem, with rear shaft extension see also www.megacraft.net or www.megatron.de or www.megauto.de

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SSI Absolute Hall rotary sensor

The SSI (Serial Synchronous Interface) is wide spread in industrial applications with absolute angle sensors. There are a lot of programmable logic controls (PLC) or other peripheral applications like counters available that can be easily configured for this communication. Furthermore this interface is very insensitive against electromagnetic interference because of the differential signals that should be transmitted via twisted pair leads.With the SSI interface, the absolute angular position is provided serially and synchronous to a receiving electronic, which has an SSI input (PLC indicator etc). The main advantage of SSI interface is that long cable distances can be overcome by very few data lines. The actual angle of position is provided in 2 byte WORD Grey code with 12 bit over 360 deg. The receiving electronic provides pulse sequences and thus determines the transmission rate. With the first following signal of the pulse sequence, the angular position is detected and kept. The following rising ramps control the bit-wise transmission of the data word. After a small pause a new angular value can be transmitted.Following options can be programmed: Zero point programming Direction of rotation - clockwise (CW) or counter clockwise (CCW)

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Incremental encoders Hall effect

Very economical replacement for Incremental Optical encoders Easy programming options More rugged - no optical problems Incremental interfaces A-B-Z A and B are quadrature signals, shifted by 90 Deg Z signal is a reference mark Hall effect incremental encoders Shock and vibration proof Economical, metal housing, with ball bearings Any pulses from 2 to 128 ppr - programmable, 256, 512 or 1024 ppr Bush and servo mount versions Output signal - 5 V TTL, 5 V OC, 24V Open collector Various output connections possible - flat cable, round cable, terminals, Cable gland, miniature connector, Terminal blocks

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SPI Digital Hall Sensor

The Serial Peripheral Interface (SPI) is a bus system for a serial Synchronous Data transmission between different integrated circuits.The bus consists of 3 lines MOSI (Master out - Slave in), MISO (Master in - Slave out) SCLK - (Serial Clock - output from master) and SS - Slave Select (active low: output from master).By these signal lines the master selects the slave for communication. This is done because the master sets the SS line from high to low. The angular information are calculated all 350us and are available for the master on demand. There is no fixed protocol for the SPI bus. Nevertheless many micro controller IC's have a SPI input. By programming this microcontroller IC many SPI suitable sensors can be managed by one microcontroller. SPI Bus Interface is a synchronous serial data link standard developed by Motorola that operates in full duplex mode. One or more devices can communicate with one master. The length of the signal wire should not be longer than 0.5 m. To bridge larger distances it is recommended to use the SSI interface. The digital signal in 2 byte Grey code transmits the angular position information through data bus.Following options can be programmed Zero point positioning Direction of rotation - Clockwise (CW) or counter clockwise (CCW) 2 Channel output - a) Redundancy i.e channel one and channel tow are identical. If one channel fails the other channel remains active. b) It is also possible to have 2 different programs in the 2 channels. For this, additional functions can be obtained.

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Potentiometer

Precision Wirewound potentiometer Conductive plastic potentiometer Single turn with stop or without stop Multiturn potentiometers - 5 or 10 turns Center tap Rear shaft extension, Multigang versions Hollow shaft, bush mounting & servo mount Used as voltage divider, angle sensor and rotary position sensor Electro-mechnical components to set the angle or divide the voltage while turning a shaft or a hollow shaft - bush mounted or servo clamps mounted

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Accessories for sensors

Knobs and dials - collet type & screw type Couplings - plastic, metal Industrial joysticks Trackball Foot pedal Small industrial printers - robust and long life, thermal & dot matrix

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Linear sensors

position sensor - linear displacement transducer Intelligent or non-intelligent electronic for potentiometric types Available in lengths upto 2000 mm Spring return, IP65 Rod or slider type (rodless) Shock & Vibration proof Precision smaller lengths LVDT Cord type for longer length see also www.megacraft.net or www.megatron.eu

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Industrial Joysticks

Industrial joystick Available with potentiometric or hall effect sensors 1 or 2 axis, with or without push button switches Expandable to 3 or 4 axis with thum stick with maximum 5 push button switches Spring return to center position Very cost effective Several handles in different colours with or without push button switch USB interface upto 4 axis and 5 switches Can-Open interface 4-20 mA long distance current interface