Available accessories from quartzdyne for our piezo memory gauges and Electronic memory gauge used in the oil and gas industry.    Visit Site :- http://www.quartzdyne.com/applications/   Quartz Pressure Transducers Since 1990, Quartzdyne has designed and manufactured the industry-standard resonating quartz pressure transducer for the downhole oil and gas industry. Our sensors are world-renowned for providing extremely accurate, low drift, and high resolution data in the most extreme conditions. Our transducers and hybrid electronics are widely used in laboratory, logging, drilling, subsea and permanent applications across the oil and gas industry.  In addition to providing accurate, and fast responses our transducers have a proven reputation for ruggedness, and reliability. Quartzdyne Pressure Sensor Quartzdyne's Pressure Sensor is a quartz resonator that changes frequency in response to pressure. The structure is a thickwalled hollow cylinder with closed ends. A thickness-shear-mode disc resonator divides the central portion of the hollow cylinder. Fluid pressure on the exterior hydrostatically compresses the quartz cylinder, producing internal compressive stress in the resonator. The vibrating frequency of the sensor changes in response to this stress. The sensor is made of crystalline quartz , which is naturally piezoelectric. Quartz resonators use the inverse piezoelectric effect to induce the resonator to vibrate at its mechanical resonant frequency when electric fields are applied to its electrodes. An oscillator circuit supplies the power and allows the frequency to be measured. Because frequency (and its inverse, time) can be measured with greater precision than any other parameter, the sensor's frequency output provides high resolution pressure measurement. Quartz is a perfectly elastic material, providing sensor stability and repeatability. The quartz resonator has a high Q, which means that its vibration can be driven with very little electrical power. This provides long operating life in battery-powered applications. Quartzdyne, Inc. 4334 West Links Drive Salt Lake City, UT 84120  USA Phone: 1-801-839-1000  Fax: 1-801-266-7985 Email: [email protected]