Products Sensors & sensing systems Marine certified pressure sensors
Two new marine versions have been added to GE Measurement & Control’s UNIK 5000 platform of pressure sensors, which feature full marine and hazardous area certification. The UNIK 5600 is designed for use on a ship’s power and process
plant, and particularly for turbine engine monitoring of exhaust, lubricating oil and fuel pressure. It is made from 316 stainless steel and normally features a DIN-approved electrical connector to ensure that contact with oil will not damage the sealing. It is also IP65 rated to provide protection against the ingress of dust and splash water. The UNIK 5700 has been designed for on-board tank-level measurement and control, for ballast, fresh water, sea and fuel tanks. It is manu- factured in titanium for sea water media compatibility and is available with an IP68 rated sealed cable for protection against water ingress down to 700m. As with all sensors in the platform, the two new models combine silicon
technology and analogue circuitry with a modular design to offer custom-built pressure sensors from standard components, matching accuracy and specification to meet individual requirements. GE Measurement & Control
www.ge-mcs.com
Board-mount pressure sensor series
Designed to provide a high resolution, high quality solution for medical and industrial applications, the Honeywell NBP series of board-mount pressure sensors are suitable for those who want to provide their own compensa- tion, calibration and amplification. Available from Aerco, the series
measures absolute or gauge pres- sures. The absolute versions have an internal vacuum reference and an output value proportional to absolute pressure. The gauge versions are referenced to atmospheric pressure and provide an output proportional to pressure variations from atmosphere. These sensors are intended for use with non-corrosive, non-ionic gases, such as air and other dry gases, and for non-corrosive, non-ionic liquids. All products are designed and manu- factured according to ISO 9001.
Compact in size at just 7 x 7mm, the sensors are suitable for tough environments and Enter 210
A new electronics architecture increases the effective output rate of Turck Banner’s LI induc- tive linear position sensor from one to five kHz.
Position sensor for motion control applications Additional features include
a short signal run time of 130µm and a highly resolved SSi output. These also offer perma- nent protection to IP67, provide non-contact measuring, are wear-free and are magnetic field immune. Applications include mea-
suring axes with high-speed controls such as those used in injection moulding machines; and axis measure- ment in packaging machines, presses or machine tools. Turck Banner
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www.turckbanner.co.uk Vision sensors for image inspection and code verification
New from Omron is the compact FQ2 vision sensor, which combines the camera, lens and lighting in a compact package, complete with image processing capabili- ty, which eliminates the need for a separate controller. The new sensor supports all of Omron’s inspection algorithms, including shape search,
colour inspection, OCR, code reading and verification. For shape detection, the company’s Shape Search II algorithm achieves high speed, highly reliable detection of position and 360˚ angle, even if the objects are overlapping. The Shape Search II algorithm can detect up to 32 objects in the same image, enabling high speed inspection of groups of items. For character recognition, Omron’s
OCR technology enables stable recognition and verification of even worn or distorted characters, and requires no setting of parameters to compensate for character contrast or positional offsetting. Models are available with resolu-
tions from 360,000 pixels up to 1.3 million pixels. The FQ2 can make up to 32 simultaneous measurements, checking more than 5000 pieces per minute. As the sensor can measure angles of rotation and other positional information, it can also be used for positioning applications. Omron T: 01908 258253
www.industrial.omron.co.uk Enter 213
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have an operating temperature range from -40˚C to 125˚C. They are available with either a gel or non-gel coating and in numerous package styles,
pressure ranges, housings and porting options. Aerco
T: 01403 260206
www.aerco.co.uk Enter 211 Wind turbine condition monitoring solutions
noise can result in gearbox modifications so that equipment runs more quietly and efficiently. Blade imbalances
can result in very low frequency vibration
and these are best detected using a MEMS
Wind turbine generators are fitted with many industrial sensors to monitor for increasing trends in vibration on the bearing casings, enabling engineers to plan main- tenance at an appropriate time. PCB Piezotronics conditioning monitoring sensors are being used in such systems – including series 601, 607, 626 and models 602D01 and 603C01 low cost ICP accelerometers and the latest embeddable accelerometers, that can easily be designed into printed circuit boards. Also available from the com-
pany are microphones and preamplifiers that are used to measure the noise from wind turbines. Gearboxes and main bearings are typical noise sources that are monitored inter- nally while overall turbine noise is measured externally. Model 831 features a built-in narrow- band FFT analysis option that enables higher frequency com- ponents to be analysed for pre- dicting possible machine faults. Analysis of the source of audible
accelerometer from the 37XX series of single and triaxial DC response devices. These feature gas-damped silicon MEMS sens- ing elements for uniform repeat- able performance and offer high frequency overload protection. Single channel telemetry sys-
tems provide a simple, accurate and contactless method of condi- tioning and transmitting strain signals on rotating or moving machinery without slip rings. Power is transferred inductively and the signal is RF transferred inductively between the moving and static component. Modal shakers and hammers enable blade manufacturers to test the strength, dynamic and structural integrity of blades. Single axis and triaxial MEMS DC accelerometers are placed on the tip of each blade and modally tuned ICP impulse hammers and shakers are used to excite the structure, enabling in-depth analysis of structural characteristics. PCB Piezotronics
www.pcbsensors.co.uk Enter 214
JUNE 2013 Design Solutions
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