Extreme Environment Displacement Sensors and Systems

The Measuring Division of Kaman Precision Products, Inc (Colorado Springs, CO) announces the availability of its Extreme Environment high-precision displacement sensors and systems. With their rugged all-welded and hermetic construction, the sensors and systems are ideal for rocket and turbine engine validation testing and other applications that require high accuracy, high reliability, and structural integrity. These include nuclear reactors, steam and gas turbines, chemical processes, and high temperature processing.

Three separate systems are available, specifically designed for high pressure, low temperature, and high temperature conditions. Operating temperatures range from -320°F to +1000°F (+1200°F short term). Displacement systems withstand pressures up to 5000 pound-force per square inch (psi). Their dual-coil sensor design minimizes temperature effects. They are made with hermetically sealed, all laser-welded Inconel housings, use Inconel-jacketed, mineral-insulated cable, and are unaffected by environmental contaminants including corrosive gas or liquids. Booth: #1223

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Low-power 1.8V Temperature Sensor Family

Microchip Technology (Chandler, AZ) announced five new 1.8V temperature sensors, including their smallest five-channel temperature sensor. The EMC181x temperature sensor family introduces system temperature rate-of-change reporting, a feature that provides advanced warning on how the temperature of a system is fluctuating. The sensor family offers a variety of remote channels at 1.8V operation to fit different design needs, ranging from two to five channels. It is ideal for applications migrating from 3.3V systems to lower voltage rails, such as battery operated IoT applications, personal computing devices, Field-Programmable Gate Arrays (FPGAs), and Graphics Processing Units (GPUs). It is also register and voltage compatible with Microchip’s popular 3.3V EMC14xx temperature sensors, making migration to 1.8V testable and achievable. With the three-channel sensor available in an 8-pin 2 × 2 mm footprint and the five-channel in a 10-pin 2 × 2.5 mm footprint, the sensors can also reduce the number of devices needed for remote temperature monitoring. Booth: #816

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TMR Magnetic Sensors

The new RedRock® product line series from Coto Technology (North Kingstown, RI) reveals new features. Their tiniest, lowest-power sensor is even lower — down to 30nA of current consumption. Also featuring dual output and end-user toggleable “turbo” mode. Target applications: fluid level sensing, flow meters, utility meters, battery-powered medical devices, power tools, industrial automation, linear actuators. Booth: #415

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High Performance Dynamic Tilt Sensor Module

The MTLT305D tilt sensor module from ACEINNA (Andover, MA) uses advanced sensor fusion (Extended Kalman Filtering) and calibration algorithms to achieve 0.5-degree tilt and <10 milli-g acceleration accuracy in a wide variety of dynamic conditions. It is calibrated to accurately operate over a wide temperature range of -40C to +85C. The completely sealed compact module (65 × 66 × 27 mm) with integrated connector is perfect for rugged construction, off road, and agriculture applications. It offers high reliability, MTBF > 50k hours and is ITAR- free. Booth: #1635

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Time-to Digital Converter for Optical Ranging and 3D Scanning

The AS6500 high-resolution time-to-digital converter (TDC) from ams AG (Premstaetten, Austria) features CMOS inputs and compact packaging for space- and cost-constrained applications. It can measure time intervals as short as 5ns with 10ps precision. The AS6500 is based on the existing model TDCGPX2, offers resolution up to 10ps on four channels, and a sampling rate of up to 1.5Msamples/s. In virtual- and augmented-reality applications, real-time 3D image rendering is supported by high sampling speeds, and precision in one-centimeter detail. Operating in dual-channel high-resolution mode, it can achieve a maximum resolution of 10psrms with 5ns pulse-to-pulse spacing. Operating from a 3.3V supply, the AS6500 typically consumes just 60mW in normal operation, and draws 60μA in stand-by mode. Booth: #1130

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Uncompensated Piezoresistive Pressure Sensor

The RS Series uncompensated, packaged piezoresistive pressure sensor and transducer from Merit Sensor (South Jordan, Utah) is simple to integrate into your product. It is designed for the application of a wide range of pressures to the backside of the sensing element. Ideally a surface-mount device (SMD), the RS Series can also be easily soldered to wires, ribbon cables, and flex strips. The pressure port makes connecting the sensor to the source of pressure easy. This can be done via O-ring or tubing. It utilizes a piezoresistive Wheatstone bridge with a chemically etched silicon diaphragm and is RoHS compliant. Pressure range is 0 to 500psi (0 to 34.474bar) and temperature range is -40°C to +85°C. Booth: #333

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Piezoelectric Force Rings

Quartz, piezoelectric force rings from PCB Piezotronics (Depew, NY) output a high integrity signal under compressive force in cyclical loading applications. Force rings possess extreme stiffness and accuracy, making them ideal for measuring microsecond duration events common to metal forming equipment (crimp, bend, stake, or stamp), drop test, and product testing applications. All PCB piezoelectric force rings incorporate quartz crystals as the sensing element. Quartz is one of the most stable piezoelectric materials available, with stiffness ten times that of steel. The sensor’s internally preloaded quartz element makes real-time output at high frequencies possible. Each PCB force sensor is calibrated to NIST (National Institute of Standards and Technology) standards and ships with a serialized calibration certificate. Booth: #1118

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Sensor Technology Magazine

This article first appeared in the June, 2019 issue of Sensor Technology Magazine.

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