Products

Triaxial Accelerometer

Dytran Instruments (Chatsworth, CA) has released the 3363AT series miniature triaxial accelerometers for modal analysis testing and environmental stress screening. The IEPE-type piezoelectric sensors have a laser-welded titanium design that includes ceramic sensing elements coupled to ultra-low-noise JFET electronics. The accelerometers feature frequency response down to 0.3 Hz, and are available in sensitivities of 10mV/g, 50mV/g, and 100mV/g. They have a 10-32 stud mount, 4-pin radial connector, and are hermetically sealed for normal operation in high-humidity and dirty environments.

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High-Pressure Valve

The Model 795 pneumatic dispensing valve from Tridak (Torrington, CT) dispenses very high-viscosity fluids, gels, and pastes that require high pressure to achieve suitable material flow. The valve can be used for silicone gels, greases, adhesives, and sealants. The valve features an adjustable flow control and repeatable fluid dispense cycles. The spool valve is designed to operate with fluid pressure to 2,000 psi (138 bar).

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Brushed DC Motors

Maxon Motor (Fall River, MA) offers two new motor sizes with IP54 protection rating and mounting brakes. The commutated DC motors, with output power of 200 and 250W, are protected on the commutation side with sealed aluminum housing. The cable outputs are sealed with PG cable fittings, and the shaft is secured with a radial shaft seal for IP54 rating on the flange side. The motors have diameters of 50 and 65 mm, and are available as standard with various winding options. They achieve nominal torque of up to 0.9 Nm, nominal speeds of up to 5,500 RPM, and an efficiency level of more than 90%.

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Linear Actuator Drive

Haydon Kerk Motion Solutions (Hollis, NH) offers the PCM4806 IDEA™ programmable linear actuator drive that is RoHS compliant and optimized to regulate a low-current power stage suitable for controller can-stack linear actuators. The compact electronic drive and fully programmable control unit feature a graphic user interface. Programming the drive is through the use of onscreen buttons instead of command sets or proprietary programming languages. The user interface features automatic population of the motor and drive parameters. Default values can be adjusted as long as they remain within the safe range calculated by the software. Other features include programmable current control, a single supply voltage of 12 to 48 VDC, 0.6Arms max rated current per phase, and 8 opto-isolated general-purpose I/O. The inputs are rated for 5 to 24 VDC, 4mA max per input.

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DC Motors

Pittman® Series 8690™ brush-commutated DC motors from AMETEK Technical & Industrial Products (Kent, OH) are 26-mm motors for data storage, medical, semiconductor processing, automation, and other high-performance applications. The iron core DC motors incorporate bonded neodymium iron boron magnets, and include 7-slot skewed armatures, resin-impregnated windings, and diamond-turned commutators. The motors are available in lengths of 1.798", 1.923", and 2.173". They provide continuous torque output up to 3.17 oz-in, peak torque to 20 oz-in, and speeds to 9,000 RPM.

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Piezo Driver

Newport Corp. (Irvine, CA) offers the XPSDRVP1, an XPS-compatible driver card for the piezoelectric stack-based NanoPositioning line of sub-nanometer-resolution stages. The driver eliminates the need for either an XPS pass-through card or an independent piezostack driver. An erasable programmable readonly memory (EPROM) stores the stage parameters in the connector, which also has embedded ESP plug-and-play technology that auto-uploads the stage ID and all necessary stage settings to the XPS. The single-axis driver features 60mA peak current, with an internal loop rate of 4 kHz. It can drive both open loop and closed loop NanoPositioning stages equipped with strain gage position sensors.

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MEMS Inclinometer

TURCK (Minneapolis, MN) offers the Q42 dual-axis inclinometer sensor with a CANopen interface for angular tilt detection, and angle measurements of ±10, 45, and 60 degrees. The device measures angular tilt in reference to gravity. It features a MEMS device that incorporates a microelectromechanical capacitive element into the sensor that utilizes two parallel plate electrodes — one stationary and one attached to a spring-mass system. Movement causes acceleration that produces deflection in the non-stationary electrode. This results in a measureable change in the capacitance between the two plates that is proportional to the angle of deflection. All measured values and parameters are accessible via the object directory. The micro board design in the MEMS technology allows for a compact device in an industrialized package.

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Single-Axis Accelerometer

Kistler Instrument Corp. (Amherst, NY) offers the Type 8640A miniature, single-axis, IEPE PiezoBeam® accelerometer for the multi-channel modal and structural analysis of small or thin-walled structures and components. Offered in ranges of ±5 g, ±10 g, and ±50 g, with sensitivities from 100 to 1000 mV/g, the unit weighs 3.5 grams. Its internal ceramic cantilever beam sensing element is thermally compensated and is supported by a center post that emits an electrical charge when bended during exposure to vibration. Sensing elements are housed in a durable, hermetically sealed welded titanium housing. The accelerometer features an integral 10-32 connector. Units are ground-isolated when mounted with the optional mounting twist-clip or adhesive mounting adapter.

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Magnetic Ring Encoder

ASM Sensors (Elmhurst, IL) offers the PMIR7 series POSIROT® incremental en coder magnet rings in three sizes for different shaft sizes. They yield up to 184,320 pulses per revolution in conjunction with the quadrature encoder read head. The encoder system consists of a magnetoresistive read head, PMIS4, and a dual-channel magnetic ring. The sensor head is enclosed in a metal housing and generates A, B, Z output pulses for quadrature detection with reference mark. The rings come in three sizes that can be press-fitted onto 27, 35, or 50-mm shaft diameters. The metal housing provides protection against EMC interference and thermal overload. The ring sizes offer decade, binary, or degree division that produce up to 102,400, 131,072, or 184,320 pulses per revolution, respectively. The available outputs are HTL, TTL, and TTL24V with a maximum output frequency of 480 kHz.

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Stages

The MS-2500 stage from Applied Scientific Instrumentation (Eugene, OR) provides 100 mm of Yaxis travel and 250 mm of X-axis travel, and works on existing inverted microscopes. Custom configurations are available, including front-loading stages with over 300 mm of Y-axis travel. The stage accepts standard 160 × 110 mm or wide 283 × 110 mm stage inserts. All axes derive their control through a closed-loop DC servomotor with high-resolution encoders for positioning feedback. The XY stage uses crossed-roller slides, lead screws, and zero-backlash miniature geared DC servomotors for accurate motion. The stages come standard with rotary encoders with resolution of 100 nm and bidirectional repeatability better than 800 nm rms. Controller options include rack mount, compact tabletop, and OEM board level. The controllers accept industry-standard commands, provide automatic backlash correction, and allow RS-232 and USB communication with a host computer.

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