Calibrator

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OBJECT TYPE
sound level
DATE
1991
ARTIFACT NUMBER
2017.0101.001
MANUFACTURER
Brüel and Kjaer
MODEL
4230
LOCATION
Denmark

More Information


General Information

Serial #
1276173
Part Number
1
Total Parts
3
AKA
N/A
Patents
N/A
General Description
Metal sound level calibrator Calibrateur de niveau sonore en métal.

Dimensions

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

Length
9.8 cm
Width
N/A
Height
N/A
Thickness
N/A
Weight
N/A
Diameter
4.0 cm
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
Calibration of sound measuring equipment. Étalonnage des appareils de mesure de son.
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 mesures 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 aussi être utilisé pour des microphones 1/4" et 1/8".
Area Notes
Unknown

Details

Markings
On the manufacturer label: "Brüel & Kjaer/ Type 4230/ 94 dB 1000 Hz/ [logo]/ Sound Level Calibrator/ Serial no. 1 276 173/ 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 for1/2" microphones. Replace battery if signal/ does not last for at least a few seconds after contact is released/ Warning: Do not unscrew the coupler part"/ On white label: "Labour/ Canada/ Travail/ Canada/ CALIBRATED / CALIBRÉ/ Init. PD Date 16/6/88"
Missing
Appears complete
Finish
Black cylindrical calibrator with a black and silver-coloured label and white and black labels. Calibrateur cylindrique noir avec étiquette noir et argenté, et étiquette noir et blanc.
Decoration
N/A

CITE THIS OBJECT

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

Brüel and Kjaer, Calibrator, before 1991, Artifact no. 2017.0101, Ingenium – Canada’s Museums of Science and Innovation, http://collection.ingeniumcanada.org/en/item/2017.0101.001/

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