MEWOI-BWA7021B,C Handheld 94dB 114dB 0.25dB Sound Level/Noise meter Calibrator

  • Name:
    MEWOI-BWA7021B,C Handheld 94dB 114dB 0.5dB Sound Level/Noise meter Calibrator
  • Model No.:
    MEWOI-BWA7021B,C
  • Main Features:
    For quick and easy calibration of sound level meters and sound measuring systems
  • Price
OEM/ODM Testing Instruments Manufacturer
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MEWOI-BWA7021B,C  Handheld 94dB 114dB 0.5dB Sound Level/Noise meter Calibrator

Click to download: MEWOI-BWA7021B,C  Handheld 94dB 114dB 0.5dB Sound Level/Noise meter Calibrator

INTRODUCTION

Acoustic calibrator is a standard sound source that can produce one or more constant sound pressures at one or several frequency points. It is used to calibrate the absolute sound pressure sensitivity of microphones, sound level meters and other acoustic measuring instruments. Accuracy level of acoustic calibrator is divided into LS level, 1 level and 2 level. LS level is generally used only in laboratory, while 1 level and 2 level are used in field. Level 1 sound level meter should be calibrated by Level 1 calibrator, Level 2 sound level meter can be calibrated by Level 1 or Level 2 sound level calibrator. In the relevant measurement methods of environmental noise, it is stipulated that before and after noise measurement, the acoustic calibrator should be used to calibrate the noise. The error of the two calibration readings should not be greater than 0.5 db.

FEATURES

  • Handy sound source for quick and easy calibration of sound  level meters and sound measuring systems.

  • The Calibrator employs solid state integrated circuitry that provides accurate and stable performance. 

  • Sensitivity calibration of microphones. 

  • Suitable for field and laboratory use.  

SPECIFICATION

Model No.

MEWOI-BWA7021B

MEWOI-BWA7021C

MEWOI-BWA7022B

MEWOI-BWA7022C

Type

Class 1(Black Model)

Class 2(Gray Model)

Standards

GB/T15173,ANSI S1.40,IEC942

Sound Pressure Level

94.0 dB and 114.0 dB

94.0 dB

94.0 dB and 114.0 dB

94.0 dB

Frequency

1000  ±1

1000±1、250±0.25

1000  ±1

1000±1、250±0.25

Accuracy

±0.25 dB

±0.5 dB

Distortion(THD)

≤ 1%

Size(mm)

70×70×35.2mm

Calibration Of  Microphones

1″(Φ23.77 mm)、1/2″(Φ12.7 mm)、1/4″(Φ6.35 mm)Optional

Operating Temperature

- 10 ℃~+ 50 ℃

Humidity

5% ~ 95%(RH)

Atmospheric Pressure

65 kPa ~ 108 kPa

SELECTION GUIDE

Model No.TypeSound Pressure LevelAccuracyFrequencyCailbration Of  Microphones

MEWOI-PD9B.80.png

MEWOI-PD9B

Class 294.0 dB and 114.0 dB±0.5 dB1000  ±1Hz1″(Φ23.77 mm)、1/2″(Φ12.7 mm)

MEWOI-PD9C.80.263.png

MEWOI-PD9C

Class 294.0 dB and 114.0 dB±0.3 dB1000  ±1Hz1″(Φ23.77 mm)、1/2″(Φ12.7 mm)

MEWOI-BWA7021B.80.jpg

MEWOI-BWA7021B

Class 194.0 dB and 114.0 dB±0.25 dB1000  ±1Hz1″(Φ23.77 mm)、1/2″(Φ12.7 mm)、1/4″(Φ6.35 mm)Optional

MEWOI-BWA7021B.80.jpg

MEWOI-BWA7021C

Class 194.0 dB±0.25 dB1000±1、250±0.251″(Φ23.77 mm)、1/2″(Φ12.7 mm)、1/4″(Φ6.35 mm)Optional

MEWOI-BWA7022B.80.63.png

MEWOI-BWA7022B

Class 294.0 dB and 114.0 dB±0.5 dB1000  ±1Hz1″(Φ23.77 mm)、1/2″(Φ12.7 mm)、1/4″(Φ6.35 mm)Optional

MEWOI-BWA7022B.80.63.png

MEWOI-BWA7021C

Class 294.0 dB±0.5 dB1000±1、250±0.251″(Φ23.77 mm)、1/2″(Φ12.7 mm)、1/4″(Φ6.35 mm)Optional



label:   Sound level calibrator

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