Key Feature

          IEC 및 ANSI Type 2기준에 적합

          Fast, Slow 및 Impulse 동특성

          30~135dB(A) 측정범위

          70dB Dynamic Range

          Large Digital Display

          AC&DC Output


 

 

Specification

 

Cel-231

Cel-254

Applicable Standard

ANSI SI.4 type 2

ANSI SI.4 type2, IEC651type2 Impulse

Measurement Range

30dB to 135dB(A)

30dB to 135dB(A)

Dynamic Span

70dB

70dB

Frequency Weighting

A Weighting

A,C Weighting

Time Weighting

Fast, Slow

Fast, Slow and Impulse, Max, hold

Accuracy

+/-1dB

+/-1dB

Microphone

1/4"Electret condenser microphone

1/4"Electret condenser microphone

Display

3-1/2digit, 12.7㎜ high LCD

3-1/2digit, 12.7㎜ high LCD

Aux, output

AC Conditioned 7.25V RMS FSD

Minimum load impedance 39㏀

AC Conditioned 7.25V RMS FSD

Minimum load impedance 39㏀

 

DC log RMS output 25mV/dB

Minimum load impedance 27㏀

DC log RMS output 25mV/dB

Minimum load impedance 27㏀

Reference conditions

114dB SPL, free field

114dB SPL, free field

Temperature conditions

-10℃ to+ 50℃ operation

-10℃ to+ 50℃ operation

-20℃ to+60℃ storage

-20℃ to+60℃ storage

Humidity conditions

<0.5dB 30%rh to 90%rh

<0.5dB 30%rh to 90%rh

Power

4×AAA alkaline battery

20 Hours typical-low indication

4×AAA alkaline battery

20 Hours typical-low indication

Size/Weight

258×70×21㎜/230g

258×70×21㎜/230g

Accessories

4×AAA Batteries

Screw driver

Operation Manual(한글,영어)

4×AAA Batteries

Screw driver

Operation Manual(한글,영어)

Accessories(Optional)

- Carrying Case

- Windshield

- External AC Power supply

- Cel-282 Calibrator