Standard Sound Level Calibrator

STANDARD SOUND LEVEL CALIBRATOR

SPECIFICATION

Output sound pressure levels: 114dB and 94dB

Output frequency: 1000Hz ¡À 4%

Reference conditions: Temperature 23 ¡ãC (73 ¡ãF) ,1013 mbar,65%RH

Accuracy: ¡À 0.5dB

Power: One 9V battery, 006P or IEC 6F22 or NEDA 1604.

Low Battery check: Calibrator will cut sound pressure output if battery voltage

falls below acceptable range.

The instrument complies with: IEC 942 CLASS 2.

Dimensions: 120(L) x 51(W) x 43(H) mm

Weight: approx.130g

Procedures:

Insert the microphone under test into the calibrator¡¯s microphone cavity, ensure that it is fully inserted (Sound level meters with 1/2¡± microphones can be calibrated with this device).

Slide the range switch to the 94dB position, or the 114dB position as desired. The calibrator generates its signal as soon as the switch is set.

Read the sound level meter¡¯s value. The sound level meter should read 94dB or 114dB depending on the calibrator¡¯s signal level. If the sound level calibrator does not match the calibrator¡¯s signal (within specification), adjust it as explained in the sound level meter¡¯s operating instructions.

Slide the range switch to the ¡°OFF¡± position and remove the microphone.

Please replace the battery when there is no sound pressure output

Open the battery cover to access the 9V battery

Remove the old battery and replace with new 9V battery

PACKAGE CONTENT

1 x Standard Sound Level Calibrator