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Nor1251/1253: Acoustic Precision Calibrators
Calibrators / nor12513
VC21: Vibration Calibrator
Nor1216/1217/1218 Outdoor Microphones

Nor1251/1253: Acoustic Precision Calibrators

Nor1251/52/53

Nor1251/1253: Acoustic Precision Calibrators

The robust and handy acoustic calibrators are available in 2 versions with varying degrees of accuracy. The class 1 calibrator Nor1251 is applied most frequently. The Nor1253 is mainly suited for laboratory use. All calibrators have an internal control circuit, which ensures the calibration level unaffected by environmental variables and load volumes.

Acoustic precision calibrator class 1

  • Automatic compensation for changes of the load volume in the calibrator opening, which makes the manual level correction for the effective volume of different microphone types redundant.
  • Compensation for changes of temperature, humidity and barometric air pressure, so correction of these parameters is no longer required.
  • Output level 114.0 ± 0.2 dB @ 1 kHz
  • Compliance with IEC 60942 class 1, automatic shutdown of the calibrator after removing the microphone.
  • Suited for 1”- , ½”- and ¼”-microphone capsules by means of appropriate adapters.
  • Powered by a standard 9V battery.
  • Dimensions 40 x 109.5 mm, weight including battery 185 g.

Acoustic calibrator class 0 – „electronic pistonphone“

  • Automatic compensation for changes of the load volume in the calibrator opening, which makes the manual level correction for the effective volume of different microphone types redundant.
  • Compensation for changes of temperature, humidity and barometric air pressure, so correction of these parameters is no longer required.
  • Output level 124.0 ± 0.15 dB @ 250 Hz ± 0.2%
  • Other frequencies and output levels are available as factory presetting.
  • Compliance with IEC60942 class 0.
  • Automatic shutdown of the calibrator after removing the microphone.
  • Suited for 1”- , ½”- and ¼”-microphone capsules by means of appropriate adapters.
  • Versorgung durch eine Standard 9 V-Batterie
  • Powered by a standard 9V battery.
  • Dimensions 40 x 109.5 mm, weight including battery 185 g.
  • With accredited manufacturer calibration.
Nor1251/52/53

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