Highlights

  • Robust, compact and battery operated
  • Supplied with accredited calibration certificate
  • Conforms to EN/IEC 60942:2017 Class 1 and ANSI S1.40–2006 class 1

Features

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  • Conforms to EN/IEC 60942:2017 Class 1 and ANSI S1.40–2006 class 1
  • Ultra-stabile silicone reference microphone
  • All-digital quartz-controlled signal generator
  • Fully compensated for static pressure, humidity and temperature
  • Sound pressure independent of microphone equivalent volume
  • Robust, compact and battery operated
  • 114dB @ 1000 Hz
  • Supplied with accredited calibration certificate

Standards

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  • IEC 60942:2017
  • ANSI/ASA S1.40-2006

Specifications

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General Sound calibrator class 1 according to EN/IEC 60942:2017 Class 1 and ANSI/ASA S1.40-2006 (R2011).

Microphone size: 1/2” and below via adapters
Calibrator frequency ( @ Reference conditions): 1000 ±1.00 Hz
Generated Sound Pressure Level relative to 20µPa (@ Reference conditions): 114.0±0.2 dB
Distortion: Max 2.0 %
Stabilizing time: 20 seconds

Sensitivity to environmental conditions: As specified for IEC 60942 class 1 / ANSI S1.40.
Environmental range for specified operation:
Temperature: -10ºC to +50ºC / 14ºF to 122ºF
Relative humidity: 25 % to 90 %
Air pressure: 65 kPa to 108 kPa

Additional specifications for the built in ambient measurement sensors:
Power off: By power switch or when microphone is removed (may be deactivated)
Battery type: 2 x LR03 alkaline batteries (AAA-size)
Battery life: > 10 hours
Battery low: Automatically switching off if battery voltage too low

Weight: 125 g / 0.28 lb
Size ( LxWxH ): 97 x 51.5 x 41 mm / 3.8 x 2.0 x 1.6“

Accessories included:
May vary if supplied as part of a sound level meter kit:

  • Accredited calibration
  • 2 x AAA batteries
  • Instruction manual
  • Leather pouch Nor1345

Downloads

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Brochurer

Product range catalogue

  • Product range catalogue -

    Norsonic_productrange_catalogue_web.pdf (9762.29KB)
    Released
Type approvals

Type approvals Nor1255

  • Type approval PTB, Germany -

    BMPB_Nor1255_Nor1256_Rev3.pdf (1032.4KB)
    Released
  • Type approval - BEV, Austria -

    NOR-1255-Beilage-1-00.-Grundzulassung.pdf (386.81KB)
    Released
  • Type approval - LNE , France -

    LNE-33792-rev.-0-du-20-decembre-2017-NOR1255.pdf (1433.62KB)
    Released
Certificates

Certificates Nor1255

  • Declaration of Conformity -

    (0KB)
    Released

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