Power Electronics

Extreme High-Temperature Accelerometers

Meggitt Sensing Systems introduced the Endevco model 6240M10, a hermetically sealed high-temperature piezoelectric charge output accelerometer with continuous operation to +649°C (+1200°F), and intermittent operation to +760°C (+1400°F). The high-reliability of this transducer within such extreme high-temperature environments makes it ideally suited for aircraft and ground gas turbine engine vibration monitoring, as well as exhaust and compression systems and high-temperature machinery and equipment.

Offered with a high sensitivity of 5 pC/g for low-level vibration analysis, the Endevco model 6240M10 offers excellent performance stability over temperature and a wide operational bandwidth. Its compact size allows it to be installed within space constrained environments. Units are ground isolated and feature a sensitive axis in-line with its supplied mounting bolt, with optional transverse version. Piezoelectric sensing elements and integral shield are also isolated from the case. Electrical connection is achieved via integral hardline triaxial cable, terminating in a 10-32 receptacle that is temperature rated to +260°C (+500°F). As a self-generating device, the accelerometer requires no external power source for operation. At such high temperatures, the use of a charge amplifier or remote charge converter that can accept a 100 kohm source resistance is required.

In addition to its supplied mounting bolt, recommended accessories for the Endevco model 6240M10, sold separately, include the model 2721B, suitable for the accelerometer's low resistance output encountered at high temperatures; and the model 3090C-120 coaxial extension cable. In addition, the Endevco® model 6240M10 is accompanied by a comprehensive five-year product warranty, with smaller quantities available for immediate customer shipment

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