Brüel & Kjær is releasing a new CCLD accelerometer, Type 4527, that can operate at a continuous temperature of 180degC, making it suited for automotive powertrain uses.
Type 4527 has wide dynamic, frequency and temperature ranges, making the transducer well-suited to general-purpose use. It has low sensitivity to electro-magnetic interference due to low output impedance and also features a very low noise floor. All of which makes it an all-round accelerometer with many applications.
Using the same design and offering the same range specifications, another new high-temperature accelerometer which significantly reduces setup time, thanks to TEDS technology, is the Type 4528-B. It communicates with the user's data acquisition hardware to automatically self-identify and supply calibration data from a microchip contained inside it. Type 4528-B is rated up to 165degC for continuous use.
Both accelerometers give the user the ability to select the number of axes that they want to measure: three, two or just one axis, avoiding the confusion of unnecessary data, and reducing the amount of measurement channels required.
The new units contain a built-in pre-amplifier, meaning they do not need an external charge amplifier to power the signal. Instead, they are simple to "˜plug-and-play' using an ordinary signal cable.
Previously, non-charge type accelerometers could not measure at such a high temperature as their integral pre-amplifies were not able to survive the heat. However, every new high-temperature unit to be shipped from Brüel & Kjær's Danish production facilities is continuously tested at 180degC for 48 hours, which ensures they are completely reliable and also pre-ages the materials - keeping their performance consistently stable.
All models are available with a high-temperature cable that safely copes with temperatures up to 250degC without distortion. A range of mounting options allows users to secure them on anything, using an M3 stud, an adhesive pad that extends the life of the transducer, or a clip mounting that ensures easy positioning.
For more information about the Type 4527 and 4528-B accelerometers, please visit www.bksv.com/.