Type 4231 – Sound Calibrator

Type 4231

Sound Calibrator

Sound calibrator designed for class 1 accurate in-field acoustic calibration of sound level meters, microphones and other sound measurement equipment.

A handy, portable sound source for calibration of sound level meters and other sound measurement equipment. The calibrator is very robust and stable and conforms to Conforms to EN/IEC 60942 (2003) Class LS and Class 1, and ANSI S1.40–2006

For maximum confidence in your measurement results,you can quickly compensate for local measurement conditions by calibrating before every measurement.

Twin sound pressure levels guarantee definitive checks even in noisy environments and ensure linearity in your microphones.

USE SCENARIO

  • Calibration of sound level meters
  • Calibration of microphones
  • Calibration of general sound measurement equipment

FEATURES

  • Robust, pocket-sized design with highly stable level and frequency
  • Calibration accuracy ±0.2 dB
  • 94 dB SPL or 114 dB SPL for calibration in noisy environments
  • Extremely small influence of static pressure and temperature
  • Sound pressure independent of microphone equivalent volume
  • 1 kHz calibration frequency for correct calibration level independent of weighting network
  • Fits Brüel & Kjær 1″ microphones (1/2″, 1/4″ and 1/8″ microphones with a microphone adaptor)
  • Switches off automatically when removed from the microphone
Fig. 1
Type 4231 fitted to Hand-held Analyzer Type 2250. The calibrator’s centre of gravity is positioned very close to the microphone, giving a stable set-up

Uses

  • Calibration of sound level meters and other sound measurement equipment

Features

  • Conforms to EN/IEC 60942 (2003) Calss LS and Class 1, and ANSI S1.40 – 2006
  • Robust, pocket-sized design with highly stable level and frequency
  • Calibration accuracy ±0.2 dB
  • 94 dB SPL or 114 dB SPL for calibration in noisy environtments
  • Extremely small influence of static pressure and temperature
  • Sound pressure independent of microphone equivalent volume
  • 1 kHz calibration frequency for correct calibration level independent of weighting network
  • Fits Brüel & Kjær 1″ microphones (1/2″, 1/4″ and 1/8″ microphones with adaptor)
  • Switches off automatically when removed from the microphone

Inquiry