Products Sensors & sensing systems Intelligent inductive sensors offer a large detection range
New from Eaton’s Electrical sector is the iProx inductive sensor series that, thanks to Smart Sense technology, has a large detection range and intelligence that can be adapted to each application. Cylindrical devices with switching distances of up to 29mm are available, twice the switching distance of other inductive sensors of the same size, claims the company. Using ProxView software, any sensor can be programmed for a range of applications. The iProx product range includes a number of models as three- or four-wire DC devices, thread diameters from M12 to M30, and a wide range of connection options. Additional features
include a stainless steel cylinder, a 300˚ visible dual-colour LED, corrosion resistant front plates and a shock absorbent cast material, and a teach function that simplifies programming. They are also resistant to both high interference levels (up to 20V/m) as well as extreme temperatures (-40°C). The sensors can be set so that disturbing metallic objects can be ignored in the foreground or in the background; and the ‘switch range’ mode makes it possible to restrict the switching of iProx to a small part of its total detection range.
In addition, the connection configuration on DC-iProx models is automatic, so that it detects NPN and PNP terminals automatically and switches the sensor accordingly (NPN = sinking or PNP = sourcing). Eaton
T: 0161 655 8900 Photoelectric sensors
Balluff has re-engineered its photoelectric BOS 18M family to include two new models. The BOS 18M Red Light Sensor has a sens- ing range up to 300mm and is said to offer both precise switching response and excellent repeat accuracy. Its LED technology and Fresnel lenses form an innovative and powerful photoelectric sensor with reliable background suppression for improved repeat accuracy and a precise switching response even at large distances. Black objects are always detected correctly. The Laser Diffuse Sensor offers high precision with laser back- ground suppression in a tubular housing. Offering reliable detec- tion, regardless of object colour, this can even identify the thick- ness of a business card. This oper- ates over the range 30-150mm. Balluff T: 0161 282 4700
www.balluff.co.uk
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Sensitive devices for HI applications New from Silicon Laboratories
is the Si114x family, its next- generation infrared (IR) and ambient light sensors for human interface (HI) applications. Measuring 2mm x 2mm, the proximity sensors’ combined architectural optimisations result in very high system SNR (signal- to-noise ratio), enabling them to achieve the indus- try's longest range, highest sensitivity and fastest data acquisition speed, claims the company. Their sensitivity gives developers the flexibility to locate IR sensors behind semi- opaque product overlays. The robust IR sensing architecture also operates in sunlight and includes an ambient light sensor capable of sensing levels up to 128 kilolux. In addition, the advanced architec- ture enables proximity measure- ments in only 25 microseconds, minimising the on-time of LEDs and lowering power consumption. The Si114x family includes sensor options with up to three
Material benefits
A range of piezoceramic compos- ite materials have been launched by Morgan Technical Ceramics that are said to improve the perfor- mance of ultrasound and sonar transducers used in medical, biometric, military and industrial applications. Using the transduc- ers, image resolutions are said to be higher and significant advances can be made to 4-D ultrasound. The piezoceramic is used to make 1-3 transducer and 2-2 transducer plates which give high performance in frequencies ranging from 200KHz to 4MHz. The company also offers com- plete transducers based on piezo- ceramic composite technology. Morgan Technical Ceramics Enter 218
www.morgantechnicalceramics.com
infrared LED drivers, giving devel- opers the freedom to implement one-dimensional HI systems with a detection range of more than 50cm or multi-dimensional sys- tems capable of gesture sensing with ranges of up to 15cm. The Si1142 and Si1143 devices, with two and three infrared LED drivers respectively, enable advanced motion and ges- ture sensing. With its two integrated LED drivers, the Si1142 supports z- and x- axis motion sensing for touchless slider interfaces. The Si1143, which supports three LED drivers, enables innov- ative 3D motion sensing for the ultimate in multi-dimensional touchless control.
Coupled with the intelligent control of the company’s capaci- tive touch-sense microcontroller (MCU), the sensors can enable a wide range of motion and gesture detection and expected-object dis- tance correction applications. Silicon Laboratories
www.silabs.com
Highly sensitive pressure sensors
High sensitivity pressure sensors are now available from Kistler. These are for use in the production of fibre-reinforced lightweight plastic structures and composite parts for the automobile and aerospace industries using conventional and high-pressure resin transfer moulding (RTM). They
can also be used in injection moulding and pressing of temperature-resistant components for domestic appliances and electrical products from thermosetting materials such as bulk moulded compound (BMC), sheet moulded composite (SMC) and elastomers. There are two types available, one with a sensitivity of 16.9pC/bar over the range from 0 to 200 bar, and the other a sensitivity of 4pC/bar over the range 0 to 1,000 bar. Both are suitable for use at melt temperatures up to 450°C. When used with the company’s CoMo Injection system, their ability to detect minute changes in cavity pressure allow the processing of curable, cross-linking compounds to be precisely monitored and controlled. The resulting mould cavity pressure curve can then be analysed for quality assurance monitoring. Kistler
T: 01256 741550 20
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A new range of pressure transmitters
New from Impress Sensors & Systems, the compact DPS 200 differential pressure transmitter is designed to operate with any gas or compressed air.
The device, which comprises a piezoresistive pressure sensor and an optional integrated LCD, is available in 14 nominal pressure ranges (differential and gauge) from 1mbar up to 1,000mbar. Protected by an ABS housing to IP54, it can be fitted anywhere along a pipeline or within a con- trol cabinet or panel. It operates at a measuring rate of 1kHz, with a response time that is adjustable by using a potentiometer in the range 50ms up to 2.5s.
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The device is temperature- compensated in the range 0-50˚C, and provides all the required elec- trical protection, including short- circuit protection, reverse polarity, etc. Suitable applications are in Building Management Systems, including HVAC (Heating, Ventilation and Air Conditioning) systems, low differential pressure measurement applications and industrial clean rooms. Impress Sensors & Systems T: 0118 981 7980
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