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Meggitt Sensing Systems has announced the new Endevco model EM42AA pistonphone, a battery operated handheld precision acoustic calibrator, designed to serve as a stable sound source for calibrations of measurement microphones, sound level meters and other acoustic equipment.
Designed to be directly compatible with both Endevco and other industry 1/8-in., 1/4-in. and 1/2-in. measurement microphones, the Endevco model EM42AA pistonphone offers a sound pressure calibration level of 114 dB re. 20 μPa, at a frequency of 250 Hz ±0.5%.
To use the pistonphone, users fit the microphone into the coupler and switch it on, enabling the device to produce a constant sound pressure level on the microphone diaphragm. The Endevco model EM42AA can be delivered with a 1-in. microphone calibration coupler, if preferred. Adapters are also included for calibrating 1/4-in. and 1/8-inch microphones.
The Endevco model EM42AA can be used as either a laboratory standard sound source, or as field calibrator for end-to-end system checks of acoustic measurement systems.
For more information, visit Meggitt Sensing Systems.
Sources: Press materials received from the company and additional information gleaned from the company's website.
DE's editors contribute news and new product announcements to Digital Engineering. Press releases may be sent to them via [email protected].
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