What is the recommended minimum distance the eCompass products must be from any non-magnetic ferrous material to ensure their performance is not affected? Answer: It depends on the configuration of the ferrous material. You must be farther from a steel bridge or building than from a steel bolt or nut. Even if the ferrous material…
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While their name indicates a smaller size, our miniature tilt sensors still pack a punch when it comes to performance. Despite the dimensions, these sensors offer exceptional resolution down to 0.1µrad (<0.000006 deg) and are among our best-selling solutions for ultra-precision tilt measurements. Some are even vacuum compatible, such as our 755 & 756 (-VAC)…
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Jewell accelerometers and inclinometers are very rugged devices with exceptional performance, but what differentiates our models with “-R” (R meaning Rail) from the other sensors? There are 3 main differences that makes them ideal for Rail applications: The “-R” has a special filtered connector used to reduce radio frequency interference (RFI) and electromagnetic interference (EMI)…
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The LCF-501 series of Force-balance accelerometers were developed as a transparent counterpart to the LCA-165, possessing the same range options, power requirements and form factor; additionally, the 501 series possesses improved performance due to the designs of the new standardized force-balance module: the J-301. This torquer type makes use of taut-band torsional suspension, rather than…
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Many electrolytic sensors are placed in areas with extreme environmental conditions. These can be extreme cold when tracking a glacier or extreme heat when measuring the smallest vibration of a volcano. These temperature changes will alter the characteristics of your sensor as the metals expand and contract, ultimately affecting the output and accuracy of the…
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Users of force balance inclinometers and tilt sensors can often see high noise in the field. Understanding the device is critical to solving the problem. A force balance inclinometer, or tilt sensor, is a high resolution, extremely accurate force balance accelerometer which is responding to the acceleration of Earth’s gravity to determine the angle of tilt….
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Many problems encountered when using sensors such as Jewell’s products are often a result of the way the sensors are connected. The wiring and connections of each product and model will vary, so it is very important to review the documentation for the specific model being used. It’s also important to make the distinction between…
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Whether you’re on a military mission, flying an airplane, or driving to your friend’s house, odds are you’ve used GPS. GPS has many uses, but not for underwater vehicles. For subsea navigation, an electronic compass is a key component for engineers. Limitations of GPS Beneath an open sky, low-end GPS systems such as smartphones are accurate…
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Military, marine navigation, unmanned vehicles, and more depend on the accuracy of an electronic compass. There are several factors that can greatly influence how a compass takes its readings. Here are three of these factors and how to be aware of them. #1 Time-Varying Magnetic Fields A time-varying magnetic field in the vicinity of an…
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When harnessing the accuracy of an electronic compass, a number of factors, including magnetic conditions, can greatly impact performance. Here are two examples of these conditions and how to fix them. 1. Static Permanent Magnetism The source of a local permanent magnetic field can be a piece of hard iron (hence the common name), a…
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