Case, storage-carrying

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OBJECT TYPE: custom
DATE: 1991
ARTIFACT NUMBER: 2017.0101.003

MANUFACTURER: Brüel and Kjaer
MODEL: Unknown
LOCATION: Denmark

More Information

General Information

Serial #: N/A
Part Number: 3
Total Parts: 3
AKA: N/A
Patents: N/A
General Description: Leather case with a metal snap closure Étui en cuir avec fermeture à pression en métal.

Dimensions

Note: These reflect the general size for storage and are not necessarily representative of the object's true dimensions.

Length: 11.3 cm
Width: 5.0 cm
Height: 4.6 cm
Thickness: N/A
Weight: N/A
Diameter: N/A
Volume: N/A

Lexicon

Group: Communications
Category: Sound
Sub-Category: N/A

Manufacturer

AKA: Bruel Kjaer
Country: Denmark
State/Province: Unknown
City: Unknown

Context

Country: Canada
State/Province: Unknown
Period: Unknown
Canada: Instrument used for calibrating microphones (ex: Precision Sound Level Meters). Instrument utilisé pour l'étalonnage de microphone (exemple: Sonomètre de précision).
Function: A case to protect and store a sound level calibrator when not in use. Un étui pour protéger et rangé un calibreur de niveau sonore.
Technical: The Bruel & Kjaer 4230 Sound Level Calibrator is a pocket sized, battery operated sound source intended for quick and direct calibration of 1" and 1/2" diameter microphones, sound level meters and other sound measuring systems. An adapter is placed over the opening for use with 1/2" microphones and is removed when 1" microphones are to be calibrated. With the correct adaptors it can be used for 1/4" and 1/8" microphones as well. Le calibrateur de niveau sonore Bruel & Kjaer 4230 est en format de poche, fonctionne avec batterie, source sonore destinée à un calibrage direct des microphones de diamètre 1" et 1/2", sonomètres et autres systèmes de mesure du son. Un adapteur est placé par dessus l'ouverture pour utilisation d'un microphone 1/2" et est enlevé lorsque les microphones 1" sont calibrés. Avec le bon adapteur, le calibrateur peut être utilisé avec des microphones 1/4" et 1/8".
Area Notes: Unknown

Details

Markings: On the proper bottom: "1276173"/ On the inside of the lid: "Sound Level/ Calibrator Type 4230/ 94 dB - 1000 Hz/ This calibrator gives a/ pressure calibration directly./ For Sound Level Meter calibration/ (free-field calibration) adjust to/ 93,6 dB for 1" and 93.8 dB for/ 1/2" microphones. Replace/ battery if signal does not/ last for at least a few/ seconds after contact/ is released./ [logo]"
Missing: Appears complete
Finish: Black leather case with black and silver-coloured metal snap, white labe with black printed markings on the proper bottom and on the inside of the lid. Étui en cuir noir avec fermeture en métal noir et argenté, marque blanche avec marquages noirs imprimés sur les dessous et à l'intérieur du couvercle.
Decoration: N/A

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If you choose to share our information about this collection object, please cite:

Brüel and Kjaer, Case, storage-carrying, before 1991, Artifact no. 2017.0101, Ingenium – Canada’s Museums of Science and Innovation, http://collection.ingeniumcanada.org/en/id/2017.0101.003/

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