Products

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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Hybrid Stepper Motors

Servo2Go (Greenville, DE) has introduced the Applied Motion Products HT24 NEMA 24 frame series of hybrid stepper motors for applications where additional power is required, but changing to a size 34 motor is not possible. The motors are available with single or dual shafts, and are optimized for microstepping. Optional encoders, gearheads, and brakes are available. Three different stack lengths with holding torques ranging from 123 to 354 oz-in are available. The motors have four leads and are suitable for bipolar and unipolar connections.

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Diaphragm Pump

The 1410 Series DC miniature diaphragm pump from Thomas Division (Sheboygan, WI) measures 3.3 × 1.2 × 2.1" and is designed for medical and other applications requiring high performance in a compact package. The pump features maximum flow of 4.3 lpm, with a maximum pressure of 27.5 psig, and a maximum vacuum of 22.0 in.Hg. The pump weighs 0.4 lb., features a low sound level, and is EMC suppression qualified to EN55011-B on some designs.

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