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'Sensors & Transducers' (S&T
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Vol. 53, No. 3, March 2005
Table of Contents
PRODUCT NEWS
Low-Cost OEM Pressure Transducer
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Landing, NJ, March 16, 2005. American Sensor Technologies, Inc. (‘AST’) offers a low-cost, high-quality OEM pressure sensor built to address applications with tight space restrictions and requirements for high accuracy, trouble-free operation and long life. Measuring just 0.875” in diameter, the AST4100 Pressure Sensor offers superior performance within the tight confines of refrigeration systems, test stands and data loggers. The stainless steel construction of the header and housing makes it ideal for use in the corrosive environments of gas panels as well as within energy/water management applications (pump and tank monitoring). The pressure sensors also serve the automotive industry as integral components of test equipment and aftermarket pressure regulators.
Built for robust use, each AST4100 pressure sensor employs a thick one-piece diaphragm (free of internal O-rings, welds and fill fluids) that offers a strong hermetic seal against the media. Available in both 17-4PH and 316L stainless steel, units offer superior resistance to media corrosion as well as superb over range and burst protection. Manufactured with the OEM in mind, each unit holds an UL/cUL 508 approval. American Sensor Technologies also utilizes its own-patented Krystal Bond™ Technology that further enhances sensor performance with long-term stability, high output and no zero shifts.
The AST4100 sensors provide gauge and compound gauge pressure measurement in pressure ranges from 0 - 25 to 0 - 10,000 PSI. Units also are available in compound ranges as well as in bar and Kg/cm2 outputs. The competitively priced AST4100 Pressure Sensors are available in outputs of 10mV/V, 0.5-4.5 V ratiometric, 1-5V, 1-6V, .25-5V, or 4-20mA. Units offer accuracy of < + 0.5% BFSL at 25o C (77o F) and long-term stability of +0.25% full scale output per annum.
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Karmjit S. Sidhu, 12 Orben Drive, Unit #1 Landing, NJ 07850, USA Tel: (973) 398-9900, fax: (973) 398-9901 E-mail: fjcarl@worldnet.att.net |
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New Portable TEDS PDA Reader/Writer
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March 8, 2005, Depew, NY - New portable Model 400A87 TEDS PDA Reader/Writer, from the Electronics Division of PCB Piezotronics, Inc., enables reading and writing to IEEE 1451.4 compliant TEDS (Transducer Electronic Data Sheet) transducers, using a PDA device. TEDS are mixed mode (analog/digital), self-identifying transducers that contain fields that fully describe the type, operation, and attributes of the transducer, and are typically used in large channel count testing applications.
New Model 400A87 TEDS PDA Reader/Writer allows the user to display the contents of the transducer's TEDS memory chip, and to write user-specific information to the memory chip. The unit shows the entire transducer data sheet in full detail, and transducer sensitivity can be displayed in either SI or English units. Device supports templates for IEEE P1451.4 Version 0.9, newly released IEEE 1451.4 Version 1.0, and LMS International templates 117 and 118.
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Bill Andrews, Division Manager Electronics Division, 3425 Walden Avenue, Depew, NY 14043-2495 USA Tel.: (888) 684-0015 ext. 2606, fax: (716) 684-0987 E-mail: bandrews@pcb.com |
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Melt Pressure Transducers and Transmitters
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Melt Pressure Transducers and Transmitters from Cyronix are available in two unique designs:
General Purpose Melt Pressure Transducers are our most popular series featuring better than .5% accuracy.
General Purpose Melt Pressure Transducers from Cyronix incorporate a liquid filled capillary design. This tried and proven design provides an electronic signal which is proportional to the measured pressure, and allows the transducer to operate at process temperatures up to 750ºF or 400ºC. The electronics of each transducer are a Wheatstone Bridge -Bonded Strain Gage design, insuring high accuracy, reliability, and repeatability.
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Cyronix Instrumentation & Controls 12 Upjohn Road, Unit 5 Don Mills, Ontario, M3B 2V9 Tel: 416 444-6614, fax: 416 444-0353 Toll Free: 1 888-CYRONIX |
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Calibrated and Compensated Single-Supply Digital RH Sensor
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MEMPHIS, Tennessee – Precon announces the HS-2000DD Digital Humidity Sensor. Based on the HS-2000 platform, this is the only RH sensor available that combines temperature compensation and factory calibration with single-supply digital communication capabilities. The HS-2000DD operates with a single supply voltage of 2.0 to 5.5 volts and can draw its supply current from a standard microprocessor I/O pin. The output format is standard serial at 9,600 baud. No special support components are needed to interface this sensor to microprocessors. Specifically designed for integration into control and monitoring systems, this sensor provides for simple and effective communication with microprocessors in OEM and custom systems. In addition, the wide supply voltage range and low power consumption make this device ideal for battery operation. The HS-20000DD combines capacitive-polymer sensing technology with a novel measurement method, eliminating the temperature correction and calibration processes required by typical humidity sensors. This sensor is accurate to +/- 2% RH, exhibits unmatched chemical resistance and excellent stability from -30 to +100 C.
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Jerry Moran, OEM Sales Manager Precon - A Division of Kele Inc. Tel.: 901.388.9137 E-mai: jerrym@preconusa.com |
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Low Profile, Surface Pressure Microphone
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March 3, 2005, Depew, NY - The Vibration Division of PCB Piezotronics, Inc. introduces a new model to its line of acoustic products. Model 130A40 is a 1/4" pressure-type microphone. The distinguishing feature for this surface microphone is that it is only .270" (6.9 mm) in height. The 130A40 has a sensitivity rating of 45 mV/Pa and a 20 Hz to 15,000 Hz frequency range (-2/+5 dB.). This prepolarized microphone does not require holders or stands. It can be laid flat on its 2" diameter (51 mm) rubber pad, or adhesively mounted for automotive, aeronautical and general acoustic, sound pressure level testing.
This modern prepolarized design has become extremely popular due to its significant savings in power supplies and cabling, and ease-of-use characteristics and operates from the same power required for ICPВ accelerometers. This provides the advantage of using the microphones with ICPВ® accelerometers in the same test, with the same signal conditioning equipment, and minimizes set-up time. The 130A40 is offered with PCB's "Total Customer Satisfaction" policy. If for any reason, at any time, you are not satisfied with our product, you can return it for an exchange or refund.
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Mark Valentino, Product Manager 18 Meadowbrook Drive 3425 Walden Avenue Depew, NY 14043-2495 (888) 684-0013 ext. 2437, fax: (716) 685-3886 E-mail: mvalentino@pcb.com |
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Wiring Simplified With Molding Pressure Sensors
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Single wire technology for larger plastics molds use is now available from Kistler Instrument. Two improved pressure sensors extend the use of single wire conductors that replace coaxial cables. Kistler announced the advance with pressure sensors for small molding applications last year. This wiring mode speeds in-the-mold pressure sensor installation and simplifies the dress of wiring. Procedures such as shortening cables and attachment to connectors are accomplished quickly, without the need to solder connections. Push on connectors enable slipping in stripped wires to make connections. Kistler pressure sensors 6157B, front diameter 4mm, and 6152A, front diameter 6mm, use this single wire technology with wire lengths up to 5m. These sensors are equipped piezoelectric elements and operate in the high impedance, charge mode. Compact sensor amplifiers that often are remotely located, can now be added to the mold or designed into the mold because of this wiring convenience. Once in a production sequence, any wire damage occurring during the molding process is more easily repaired.
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Don Beehler, Kistler Instrument Corp., 75 John Glenn Drive, Amherst, NY 14228-2171, Tel.: 716-691-5100, fax: 716-691-5226 E-mail: don.beehler@kistler.com |
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Gaithersburg, MD - Wilcoxon Research, the leading supplier of quality vibration sensors, announces the release of the new PVM 100 Portable Vibration Meter, a handheld meter that measures equipment vibration in terms of acceleration, velocity or displacement. The easy-to-use PVM 100 fits perfectly into Wilcoxon’s Total Lower Cost (TLC) approach by offering an economical and effortless way to take vibration readings. Simply attach the accelerometer, press one button to select acceleration, velocity, or displacement, and hold it down to read the output on the large digital display. Plant managers who need to further pinpoint a noise source can plug headphones into the top-mounted jack.
"The PVM 100 provides a quick and easy check of vibration levels when a full vibration analysis is not yet warranted,” says Steve Wichtendahl, Vice President of Sales and Marketing. "Our Digital Vibration Meter is most important to customers who have smaller plants, but recognize the value of measuring vibration levels. This product can be a straightforward first step to introducing a Condition Based Monitoring (CBM) program.”
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Courtney Schlapo, Marketing Communications Specialist, Tel.: 301-216-3039 E-mail: CSchlapo@Wilcoxon.com |
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Melt Pressure Gauges (Extrusion Pressure Gauges) are totally mechanical devices, requiring no power. The rugged, totally self-contained Cyronix Extrusion Melt Pressure Gauges allow the user to benefit from the improved efficiency and quality that goes along with melt pressure monitoring at an affordable price.
Pressure Ranges: 0-5,000 psi or 0-10,000 psi, Dual scale psi and bar. Accuracy: 1.5% of full scale.
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Cyronix Instrumentation & Controls 12 Upjohn Road, Unit 5 Don Mills, Ontario, M3B 2V9 Tel: 416 444-6614, fax: 416 444-0353 |
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New Dual Channel Digital LVDT Readout and Setpoint Controllers
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Pennsauken, NJ, March 17, 2004. Macro Sensors introduces two new six-digit, dual channel controllers for applications involving LVDT-based displacement transducers or VR half-bridge gaging probes. Economically-priced, the DMC-A2 Dual Channel AC-LVDT Controller and DMC-D2 Dual Channel DC-LVDT Controllers perform arithmetic calculations between two channels for T.I.R. measurements or differential measurement for use in production lines to automatically gage products for quality control and product sorting. In the power generation and petrochemical industries, these controllers can be used to provide servo position feedback on actuated equipment such as valves and dampers, or for measuring turbine case expansion. The Nema-4 front panel allows units to be used in marine and offshore mining applications.
Offering user-friendly operations, the digital controllers incorporate a scrolling display that actively prompts users to input information into the unit during specific set-up stages. Users can also view and program data to the controller through a computer using a GUI interface via RS232 or TCP/IP communications.
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Ed Herceg, U.S. Route 130 North, Bldg. 22, Pennsauken, NJ 08110-1541 Tel: 856-662-8000 Fax: 856-317-1005 E-mail: eeh@macrosensors.com |
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Micronas’ New 8/16-bit Controller Platform Reduces System Costs and Offers
Larger Memory Capacity in Automotive Electronics
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Freiburg, Germany, February 21, 2005 – Micronas, a leading supplier of IC and sensor system solutions for automotive and consumer electronics, announced today a new 8/16 bit controller platform that lowers overall system cost while increasing the range of memory options available to designers. Highly integrated, the CDC 16xxF family features three CAN interfaces, a superior Power Saving Module (PSM), five stepper motors drivers, five pulse-width modules, a sound generator, an integrated LCD module and many other peripherals. To simplify upgrades of existing designs, the device executes both legacy 8-bit code and 16-bit instructions, and it can address up to 256 KB of program memory without bank-switching.
Each of the three CAN modules can individually administer up to 16 objects, allowing for simple gateways putting only moderate load on the CPU. The CAN modules can be used as full- or basic CAN and meet the requirements of the Bosch specification V2.0B.
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Anja Maria Hastenrath, Zugspitzstr. 10 81541 Munchen, Germany Tel.: +49 89 69760610, fax +49 89 69760613 Email: ah@embedded-pr.de |
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First APD Bias Controller and Current Monitor On Single-Chip
Eases Optical Transciever Design
Analog Devices is introducing the first device to combine avalanche photodiode (APD) bias control and current monitoring on a single chip for space-constrained optical transceiver modules. For optical network designers who need to ensure the responsivity of a temperature-sensitive APD, the ADL5317 accurately sets the bias voltage over a 6-V to 72-V range, while simultaneously monitoring current over a six-decade range. The device supports next-generation optical networks operating at typical data rates of 10 Gbps (gigabits per second) and above, and its linear interface reduces the noise normally found in APD modules.
As data rates grow to 10 Gbps and beyond, systems are increasingly transitioning from PIN diodes to higher performing APDs, which improve receiver sensitivity and increase link reach. For an APD to work accurately in receiver designs, continuous voltage correction and bias control are required.
The 3-V linear bias control interface of the ADL5317 allows optical designers to use a fixed high-voltage switcher, lowering the supply decoupling and low-pass filtering requirements of traditional APD biasing designs that are prone to switching noise created by PWM-based DC-to-DC converters. It mirrors photodiode current (5:1 ratio) over six decades with a linearity of 0.5% from 50nA to 1mA and 1% from 5nA to 5mA, enabling high-side current measurement when used with optical power measurement devices, such as ADI's AD8304, AD8305, ADL5306 and ADL5310 translinear log amps.
The ADL5317 is built for exceptional performance and ease of design for all APD modules and systems. Features such as over-current protection and over-temperature shutdown protect the expensive APD from damage caused by excessive input current and die temperature, shutting down the bias controller until temperature falls below 120 degrees Celsius and current levels fall below acceptable levels.
Charlotte Betterley,
Analog Devices, Inc.,
804 Woburn Street,
Wilmington, MA 01887,
Tel: 781/937-1710; fax: 781/937-1026
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