HD2022 – Class 2 Sound Level Calibrator

Brand: Delta OHM S.R.L.

HD2022 – Class 2 Sound Level Calibrator

Part Number: HD2022 Brand: Delta OHM S.R.L.

Acoustic Calibrator

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HD2022 sound level calibrator is a portable, battery operated sound source, suitable for sound level meters (portable and laboratory) and acoustic stations. 

It allows calibrating 1/2” (1/4” with HD2020AD4 adapter) microphones with mechanical dimensions compliant with IEC 61094-1 and IEC 61094-4.

The generated sound pressure level is equal to 114 dB at 1000 Hz frequency. A LED signals the low battery condition.

Advantages:
  • The 1000 Hz frequency allows calibrating sound level meters with any frequency weighting (LIN, A, B, …), without applying any correction factor.
  • The generated sound pressure level is independent of atmospheric pressure: you don’t need to adjust the value according to static pressure over a wide range of values.
  • The calibrator can be conveniently used both in laboratory and in the field. The 114 dB sound level allows performing calibrations even in high background noise environments.
  • Its simplicity of use allows even unskilled staff to use it.
ISO 17025 calibration certificate according to IEC 60942 included.

Specifications

Coupling Cavity

  • For standard 1/2” (12.7 ± 0.03 mm) microphones according to IEC 61094-1 and IEC 61094-4

Optional Adapter

  • HD2020AD4 for 1/4” microphones

Frequency Tolerance

  • 2 % in the range 0…+40° C and 10…90 %RH

Sound Pressure Level

  • 114.0 dB ± 0.3 dB at 1 kHz (referred to 101.3 kPa, 23° C ± 3° C and 65 %RH)

Reference Conditions

  • 23° C, 50 %RH, 101.3 kPa, microphone capsule with 10 mm³ equivalent volume

Stabilization Time

  • 10 s

Total Distortion

  • < 1 %

Temperature and Humidity Influence

  • < 0.3 dB in the range 0…40° C and 10…90 %RH

Static Pressure Influence

  • < 0.1 dB in the range 65…108 kPa

Short-Term Stability

  • ± 0.05 dB

Stability After 1 Year with Normal Use

  • ± 0.15 dB

Operating Conditions

  • 0…+40° C / ≤ 90 %RH

Storage Temperature

  • -25…+70° C

Microphone Equivalent Volume

  • From 5 to 250 mm³

Power Supply

  • 9 V alkaline battery IEC type 6LR61
  • 9 V rechargeable batteries can also be used

Battery Autonomy

  • 48 hours of continuous use with good quality alkaline batteries

Case Material

  • ABS

Dimensions

  • 53 x 43 x 83 mm

Weight

  • 160 g

Protection Degree

  • IP 64

Effects of Electromagnetic Fields

  • < 0.3 dB

Documentation

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