Class 1 sound level calibrator with ISO 17025 certificate included

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Specifications

Coupling Cavity

  • For standard 1/2” microphones

Frequency

  • 1000 Hz

Frequency Tolerance

  • 1 % in the range -10...+50C and 10 %...90 %RH

Sound Pressure Level

  • 94.0dB and 114.0dB ± 0.2 dB at 1 kHz

Reference Conditions

  • 20C, 50 % RH, 101.3kPa, 10 mm³ cartridge volume

Stabilization Time

  • 10 s

Total Distortion

  • < 1 %

Ambient Temperature and Humidity Influence

  • < 0.3 dB in the range -10° C..50° C and 10 %...90 %RH

Static Pressure Influence

  • < 0.1dB in the range 65kPa ... 108kPa

Short-Term Stability

  • ± 0.03dB

Stability After 1 Year with Normal Use

  • ± 0.1dB

Working Temperature

  • -10...+50° C

Relative Humidity

  • < 90 %RH

Storage Temperature

  • -25...+70° C

Microphone Equivalent Volume

  • 5 to 250 mm³

Power Supply

  • 9 V alkaline battery IEC type 6LR61. 9 V rechargeable batteries

9 V Battery Autonomy

  • 48 hour continuous function with good quality alkaline batteries

Automatic Power Off

  • 5 mins. cannot be disabled

Display

  • 3 1/2 LCD battery symbol

Watch/Date-Indicator

  • internal with 3 V lithium buffer battery

Case Material

  • ABS

Dimensions

  • 53X43X83 mm

Weight

  • 160 g

IP Protection Degree

  • IP64

Effects of Electromagnetic Fields

  • V0.3dB

Documentation

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