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Sensors Accelerometers Inclinometers Custom Solutions Custom

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Our high-accuracy sensors feature: ■ ±1.0° to ±90° and ±0.01g to ±20g, full range ■ <0.02% nonlinearity ■ high level ±5 volt output ■ less than 0.0001 volt noise ■ <0.001% repeatability and hysteresis ■ p radian resolution and dc response With over forty years’ experience, Jewell Instruments is a world leader in the manufacture and distribution of inertial sensors, including accelerometers and inclinometers. Well-known for both quality and reliability, Jewell sensors are available for a wide range of industrial, commercial, and aerospace applications. What makes us unique is our ability to...

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All Jewell accelerometers are fully self-contained. They connect to a DC power source and a readout or control device for a complete operating system. The output is a high-level DC signal proportional to acceleration and tilt angle sine from as little as ± 0.010 g to ±20 g full range. Jewell accelerometers respond to change in velocity as small as 1|Jg. Hysteresis less than 0.0005% of full range output and vibration rectification less than 50 |jG/G2 are available. LCM Series A general purpose tilt sensor for industrial, commercial, and aerospace applications. Engineered with...

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Jewell inclinometers are extremely sensitive, rugged transducers designed to provide horizontal angle or vertical deviation measurements with virtually infinite resolution. Every inclinometer responds to changes of slope as small as 0.1 second of arc, with a high-level DC output signal proportional to the sine of the angle of tilt from as little as ±1° full range to ±90° full range. LCI Series Ideal for low frequency laboratory applications, the LCI Series is highly accurate, featuring a torsion flexure suspension that offers superior repeatability and low hysteresis. LCF Series Suitable...

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LCF-196 Biaxial The LCF-196 inclinometer provides a biaxial output in a 23mm diameter package. It is a high accuracy sensor designed for applications where high levels of shock and vibration are present. The signal is typically input to analog or digital data recording systems. The two axis version of the rugged, high accuracy LCF-100 is available with a wide range of options including single ended input power, an internal temperature sensor, and 4 to 20 milliamp output. This LSO inclinometer is designed for applications where high levels of ambient electrical noise are present and/or long...

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Digital Inertial Sensor m The LDF series digital inclinometer takes Jewell Instruments’ highly accurate and robust force balanced technology to the next level. Jewell’s LDF series digital inclinometer is available with an RS-422 serial interface. Its onboard processor allows the LDF series inclinometer to compensate for errors, including temperature, ensuring the highest level of accuracy over the entire operational temperature range of the sensor. The LDF series features a wide input power supply range of 6 to 50VDC and customizable bandwidth from DC to over 100Hz making it extremely...

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Jewell specializes in custom-designed, high-accuracy, inertial sensing solutions. Our sensors solve unique application problems where standard, off-the-shelf sensors simply won’t do. More companies choose custom-engineered Jewell tilt sensors because of: ■ Our high-value, high-accuracy, rugged designs ■ Our willingness and capability to design and engineer custom solutions based on our proven methodologies ■ Our applications expertise enabling us to understand what will work, what won’t work, and what the trade-offs will be in virtually any design For many aerospace and industrial...

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Full scale ranges of 1 radian/sec2 to ± 100 radians/sec2 Antenna Orientation Custom force balance inclinometers are employed in many fire control systems and mobile antenna leveling applications. They accurately measure slope and tilt of the installation enabling automated leveling of a weapon’s platform or target acquisition radar. The LCF-2310 is a biaxial accelerometer used in a variety of fire control applications. This ruggedized unit produces a highly accurate, low noise output with a low pass filtered bandwidth. EMI/RFI filtering is also included. Ship and Barge Leveling Signals from...

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Analog Principles of Operation The torquer mechanism is typically the most expensive subassembly in a servo sensor. Torquers are sophisticated meter movements, and Jewell, as a meter manufacturer, can produce torquers very efficiently. We, therefore, often have a cost advantage when compared to other conventional technology inertial instrument producers. A torquer used to sense acceleration or tilt is intentionally unbalanced in its plane of allowable angular motion. When acceleration or tilt is present, a torque proportional to the mechanism unbalance and the physical input is developed....

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The following information describes how Jewell Instruments interprets performance characteristics and error sources often listed in inertial instrument specifications. The Jewell interpretation is generally consistent with IEEE accelerometer test conventions. Range and Scale Factor The range of an accelerometer or inclinometer is the input from + to - over which the transducer is expected to yield the specified output. A ±2g accelerometer has an input range of 4g. The scale is one half the range, 2g in the example given. Jewell inertial sensors operating at ±15 volt bipolar input voltage...

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Input Voltage The input voltage specified is the range of voltages over which the unit is expected to operate within specification. If the input voltage is increased beyond the specified range, an accelerometer or inclinometer will continue to operate. At higher input voltages, additional current is required. The internal heat dissipation increases, and component life begins to decrease. Most units will also continue to operate at input voltages below the specified range. The output voltage clipping level and overrange capability are decreased at lower input voltages. Alternate input power...

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