Australia & New Zealand (03) 9540 5100

Isotron/ IEPE

Meggitt piezoelectric accelerometers are charge mode accelerometers that requires use of an external charge amplifier, allowing for reliable operation over wider temperature and amplitude ranges. Piezoelectric accelerometers are ideal choices for acceleration, shock and vibration measurements, due to their wide frequency range, easy installation, and multiple options in shapes, weights, size, and sensitivities. Special purpose piezoelectric accelerometers are also available for flight test, extreme low- and high-temperatures and radiation environments.Meggit Endevco® has successfully designed and manufactured shock accelerometers with built-in mechanical filter. This piezoelectric accelerometer features both an input mechanical filter and an electronic low-pass filter for sensor isolation and maximum bandwidth. Based on a well-established piezoelectric shock sensor, this accelerometer features a captive mechanical filter arrangement. Compared to the model of an external filter, this unique design provides mechanical isolation to the sensor (m) from all sides. High frequency energy, in the sensitive and transverse directions, is filtered by the isolation material, leaving the sensing element with only the pass-band signals. In addition, the transducer’s external housing keeps the entire assembly together in case of excessive shock input. Highlights for Piezoelectric accelerometers:
  • Extremely wide dynamic range, low output noise
  • Suitable for shock and vibration measurement
  • Excellent linearity over dynamic range
  • Acceleration signal can be integrated to provide velocity and displacement
  • Wide frequency range
  • Compact, non-contact design
  • Highly sensitive
  • Self-generating – no external power required
More product details, please click here or download practical understanding of accelerometer specifications
Model number Type Technology Sensitivity (mV@140dB SPL) Temp (C) Mounting
2250A-10 Isotron accelerometers 10 -55 - 125 Adhesive
2250AM1-10 Isotron accelerometers 10 -55 - 125 Adhesive
2255B-01 Isotron accelerometers 0.1 -55 - 125 Thread
2255B-1 Isotron accelerometers 1 -55 - 125 Thread
2256A-10 ISO Isotron accelerometers 10 -67 - 257 Thread
2256A-100 Isotron accelerometers 100 -67 - 257 Thread
2258A-10 Isotron accelerometers 10 -55 - 125 Thread
2258A-100 Isotron accelerometers 100 -55 - 125 Thread
2302-10 Isotron accelerometers 10 -55 - 125 No selection
2302-100 Isotron accelerometers 100 -55 - 125 No selection
2302-5 Isotron accelerometers 5 -55 - 125 No selection
2302-50 Isotron accelerometers 50 -55 - 125 No selection
2303 Isotron accelerometers 0 0 - 0 No selection
2304 Isotron accelerometers 0 0 - 0 No selection
2305 Isotron accelerometers 0 0 - 0 No selection
256-10 Isotron accelerometers 10 -55 - 125 Adhesive
256-100 Isotron accelerometers 100 -55 - 125 Adhesive
256HX-10 Isotron accelerometers 10 -55 - 125 Thread
256HX-100 Isotron accelerometers 100 -55 - 125 Thread
258A-10 ISO Isotron accelerometers 10 -54 - 125 Thread
258A-100 ISO Isotron accelerometers 100 -54 - 125 Thread
25A Isotron accelerometers 5 -55 - 125 Adhesive
25B Isotron accelerometers 5 -55 - 125 Adhesive
27A11 Isotron accelerometers 10 -55 - 125 Adhesive
27A12 Isotron accelerometers 100 -55 - 125 Adhesive
27AM1-10 Isotron accelerometers 10 -55 - 125 Adhesive
27AM1-100 Isotron accelerometers 100 -55 - 125 Adhesive
35A Isotron accelerometers 5 -55 - 125 Adhesive
5220B-100 Isotron accelerometers 100 -50 - 125 Thread
61C12 Isotron accelerometers 100 -25 - 125 Adhesive
61C13 Isotron accelerometers 1000 -25 - 125 Adhesive
65-10 Isotron accelerometers 10 -55 - 125 Thread
65-100 Isotron accelerometers 100 -55 - 125 Thread
65HT-05 Isotron accelerometers 0 0 - 0 Adhesive
65HT-1 Isotron accelerometers 0 0 - 0 Adhesive
65HT-10 Isotron accelerometers 1 -55 - 175 Thread
66A11 Isotron accelerometers 10 -55 - 125 Adhesive
66A12 Isotron accelerometers 100 -55 - 125 Thread
66A50 Isotron accelerometers 5 -55 - 125 No selection
67-10 Isotron accelerometers 10 -55 - 175 Thread
67-100 Isotron accelerometers 100 -55 - 175 Thread
7250A-10 Isotron accelerometers 10 -55 - 125 Thread
7250A-2 Isotron accelerometers 2 -55 - 125 Thread
7250AM1 Isotron accelerometers 0 0 - 0 No selection
7250AM2 Isotron accelerometers 0 0 - 0 No selection
7251A-10 Isotron accelerometers 10 -55 - 125 Thread
7251A-100 Isotron accelerometers 100 -55 - 125 Thread
7251A-500 Isotron accelerometers 500 -55 - 125 Thread
7251AHT-500M1 ISO Isotron accelerometers 500 -55 - 150 Thread
7251B11 Isotron accelerometers 10 -55 - 125 Thread
7251B12 Isotron accelerometers 100 -55 - 125 Thread
7251HT-100 Isotron accelerometers 100 -55 - 150 Thread
7251HT-500 Isotron accelerometers 500 -55 - 150 Thread
7253C-10 Isotron accelerometers 10 -55 - 125 Thread
7255A-01 Isotron accelerometers 0.1 -18 - 66 Thread
7255A-1 Isotron accelerometers 1 -18 - 66 Thread
7257AT-010-YYY Isotron accelerometers 10 -55 - 100 Thread
7257AT-100-YYY ISO Isotron accelerometers 100 -55 - 100 Thread
7259B-10 Isotron accelerometers 10 -55 - 125 Thread
7259B-100 Isotron accelerometers 100 -55 - 125 Thread
7259B-25 Isotron accelerometers 25 -55 - 125 Thread
751-10 Isotron accelerometers 10 -55 - 125 Thread
751-100 Isotron accelerometers 100 -55 - 125 Thread
752A12 Isotron accelerometers 100 25 - 85 Thread
752A13 Isotron accelerometers 1000 25 - 85 Thread
86 Isotron accelerometers 10 -10 - 100 Thread
87-1 Isotron accelerometers 1 -20 - 100 Thread
87-10 Isotron accelerometers 10 -20 - 100 Thread
The sensing element of Piezoelectric accelerometers is a piezoelectric material that can be either natural quartz crystals or man-made polycrystalline ceramics. The basic principle of Piezoelectric Effect is an inherent or induced property of these crystals. As the crystal undergoes stress due to applied force during acceleration, negative and positive ions will accumulate onto the opposed surfaces of the crystal. The amount of accumulated charge is directly proportional to the applied force when the applied acceleration can be calculated according to Newtons’ law of motion F=mA. The sensing element is housed in a suitable sensor body to withstand the environmental conditions of the particular application. One side of the piezoelectric material is connected to a rigid post at the sensor base. A seismic mass is attached to the other side. Due to the piezoelectric effect a charge output proportional to the applied force is generated and the charge output signal is proportional to the acceleration of the mass. Over a wide frequency range both sensor base and seismic mass have the same acceleration magnitude so that the sensor measures the acceleration of the testing object.Piezoelectric accelerometers cannot measure constant acceleration because they are inherently AC coupled, however, they are typically the most versatile and economic choice for measuring fast transient and periodic acceleration wherever shock or vibration is of interests. A proof mass is bonded to the crystal and an electrical charge is generated when a force is imposed upon the crystal during acceleration and this output is relative to the applied force. The piezoelectric element is connected to the Sensor output via a pair of electrodes. The sensing element is housed in a suitable sensor body to withstand the environmental conditions of the particular application. One side of the piezoelectric material is connected to a rigid post at the sensor base. A seismic mass is attached to the other side. Due to the piezoelectric effect, a charge output proportional to the applied force is generated and the charge output signal is proportional to the acceleration of the mass. Over a wide frequency range both sensor base and seismic mass have the same acceleration magnitude so that the sensor measures the acceleration of the testing object. Piezoelectric accelerometers cannot measure constant acceleration because they are inherently AC coupled, however, they are typically the most versatile and economic choice for measuring fast transient and periodic acceleration wherever shock or vibration is of interests.
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