Inertial Aerosystems have announced a range of rugged, high temperature accelerometers designed primarily for downhole measurement while drilling (MWD) in the oil and gas industries. Designated the QAT160/T185 range, these units, produced by US based Honeywell in Redmond, WA, consist of two models. Both use the proven Q-Flex etched quartz proof flexure seismic system, modified for harsh environments.
The integrated high temperature electronics hybrid develops an output current proportional to acceleration providing both static and dynamic acceleration measurements up to + or - 20g. With an appropriately scaled output resistor, the output current can be converted into voltage.
The QAT160 has an operating temperature of -40 to 160ºC (175ºC intermittent), while the QAT185 has an operating temperature of 140 to 185ºC (200ºC intermittent). Both have a shock resistance of >1000g and a vibration tolerance of 30g peak sine 50/800Hz. Weighing only 55 grams with a diameter of 25.4mm and a length of 18.5mm, they are ideal where space and weight are at a premium.
These high quality products have high resistance to vibration and shock and have built in calibration and various mounting options are available.
These products are currently free of US export licensing requirements provided a valid end use certificate is provided.
[Mar 2008]
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