Sensors/Data Acquisition

The Economics of Accuracy in Low-cost, High-volume Sensing Applications

Various research firms forecast the market for portable medical devices to be somewhere around the $20 billion-range within the next several years. Part of the increased demand is due to an aging population with more chronic conditions. These smaller portable units requires devices with smaller footprints. By the same token, smaller devices need to provide adequate levels of care to ensure patient safety and comfort. Thus, functionality cannot be sacrificed for space.

Posted in: White Papers, White Papers, Electronics, Electronics & Computers, Semiconductors & ICs, Data Acquisition, Sensors

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Position Sensors

TE Connectivity (Pennsauken, NJ) announced the HLIR 750 intrinsically safe, 4-20 mA LVDT position sensors that are CSA listed for use in hazardous locations and where an intrinsically safe sensor is required. With stainless steel construction and a hermetically sealed sensor body, these LVDT position sensors provide contactless position measurement for critical applications in gas turbines for fuel valve position feedback, vane pitch servo controls, governor controls, and generator shell expansion measurement.

Posted in: Products, Manufacturing & Prototyping, Motion Control, Sensors

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Solid State Relays

The TS13102 and TS13103 solid state relays from Semtech Corp. (Camarillo, CA) support the company’s Neo-Iso™ Platform, an isolated power/switch management technology. The TS13102 autonomously harvests energy, without the assistance of a microcontroller (and while the switch is closed). The harvested energy, stored in a system capacitor (Csys), can be shared across a system’s multiple channels, driving several loads simultaneously. The TS13103, outfitted with a Power Transfer Output pin (PTO), transfers the harvested energy on the other side of the isolation barrier to the system’s controller. Specific commands are sent through the control line (CLK) to perform a variety of functions, including receiving diagnostic information such as status, fault information, and voltage detection. The control and feedback lines can also be shared across multiple channels. Three address pins allow for up to eight switches on the same control line (CLK).

Posted in: Products, Manufacturing & Prototyping, Sensors

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Pressure Gauge

The MAN-R pressure gauge from KOBOLD (Pittsburgh, PA) uses an elastic measuring element to generate a precise, reproducible deflection when subjected to pressure. The pressure is converted into rotary motion of a pointer. The subsequent pressure measurement can then be read on the scale of the dial. Available in ranges from 30" Hg to 15,000 PSIG, the MAN-R offers a choice of up to four magnetic, sliding, or highly reliable inductive switches. Bottom or rear process connections are available in 1/4" or 1/2" NPT.

Posted in: Products, Manufacturing & Prototyping, Sensors

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Regulator

STMicroelectronics (Coppell, TX) has introduced the LDBL20, a 200mA Low-Dropout (LDO) regulator in a 0.47 × 0.47 × 0.2 mm chip-scale package. The LDBL20 features a 200mA output. Input voltage ranges from 1.5V to 5.5V, with 200mV typical dropout. Rejection (PSRR) of 80dB at 100Hz and 50dB at 100kHz simplifies filtering over a wide frequency range. The device has a quiescent current of 20μA no-load, 100μA full-load, and 0.3μA in standby. Output voltages are available on request, from 0.8V up to 5.0V in 50mV increments. Built-in features include logic-controlled electronic shutdown, internal soft-start, and support for active output-voltage discharge if required.

Posted in: Products, Manufacturing & Prototyping, Sensors

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Position Sensors

The Alliance Sensors Group (Moorestown, NJ) has introduced the PG Series of linear variable differential transformer (LVDT) position sensors. The products are designed specifically for valve position sensing applications, such as steam turbine control systems in electric power generation plants. Installation features include standard body clamps, flange mounts, ball joint couplings, and rod eye ends. Two double-contact shaft seals keep contaminants from the LVDT’s bore. With no connector, the sensor has screw clamping terminals that accept No. 24-14 AWG wire. Continuous sensor operation is possible in ambient temperature up to 350 °F (175 °C).

Posted in: Products, Manufacturing & Prototyping, Sensors

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Wireless Temperature Sensing System

Chromalox (Pittsburgh, PA) offers the IntelliTrace® Wireless system for heat trace applications in both ordinary and hazardous areas. The Chromalox temperature sensing system includes the IntelliTrace® ITAS or ITLS Series Heat Trace Control Panel and specific industrial wireless transmitters, which are paired with appropriate temperature sensors. The panel facilitates both wired and wireless temperature sensor inputs, and the touchscreen computer HMI distinguishes wireless circuits from wired ones. The IntelliTrace® Wireless system utilizes the Rosemount® 248 Wireless Temperature Transmitter, which may be pipe- or structure-mounted. The 248 transmitter is offered with either aluminum or polymer housing, and is available with or without a matching universal mounting bracket.

Posted in: Products, Manufacturing & Prototyping, Sensors

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