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Sensors Mag


May 1, 2006 By: Melanie Martella, Sensors Sensors

RF Test Instruments

Keithley Instruments Inc., Cleveland, OH, offers the Model 2910 RF vector signal generator for RF design, development, and manufacturing. The device uses software to adapt as test requirements change and features a software-defined radio architecture, power leveling techniques, and patent-pending synthesizer technology. It can also generate an RF signal with up to a 200 MHz bandwidth from user-supplied analog baseband in-phase and quadrature signals. (800-688-9951, product_info@keithley.com, www.keithley.com)

Wireless Mesh Module

RF Monolithics Inc., Dallas, TX, offers its DM1800 embedded wireless mesh networking module that is now FCC and ETSI certified. The DM1800 is based on the company's ASH radio and a PIC microcontroller and is suited for applications that require long-life operation on batteries. The single fixed-channel RF transceiver operates at either 433.92 or 916.5 MHz and has a 4.8 Kbps channel data rate. (972-789-3823, www.rfm.com)

Level Measurement

Monitor Technologies LLC, Elburn, IL, offers the Flexar guided-wave radar level measurement system that uses time domain reflectometry to measure level of powders, granules, and other bulk solids as well as various liquids. Measuring range is up to 100 ft. in solids and 200 ft. in liquids. Flexar is available with a choice of either a standard "smart" interface for use with SiloTrack inventory management software or an analog output. (800-766-6486, monitor@monitortech.com, www.monitortech.com)

Single-Gas Detector

The ALTAIR single-gas detector from MSA Instrument Div., Pittsburgh, PA, features three sensor options: carbon monoxide, hydrogen sulfide, and oxygen. Versions with carbon monoxide or hydrogen sulfide sensors can operate for >2 yr. Sensor ranges are 0–25% by volume (oxygen), 0–500 ppm (carbon monoxide), and 0–100 ppm (hydrogen sulfide). The detectors offer high resistance to RFI; audible, visual, and vibrating alarms; and automatic recording of the last 25 alarm events. (800-672-2222, www.msanet.com)

Temperature Loggers

Measurement Computing Corp., Middleboro, MA, offers the USB-501 temperature and USB-502 temperature and humidity battery-powered data loggers. Both devices log up to 16,382 temperature measurements from –35°C to 80°C; the USB-502 also logs up to 16,382 RH measurements over the full 0%–100% RH range. The loggers plug into a standard PC or laptop USB port for setup and data download. Software is included. (508-946-5100, www.mccdaq.com)

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