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Handheld digital sound level meter with LCD screen, grey plastic body and 1/2 inch microphone capsule

Alion fortune HK Limited

Alion fortune HK Limited GM1357 engineering development tool 30-130 dBA 35-130 dBC

SKU CH-KT01-SS6KJ MPN GM1357

Measures sound pressure from 30 to 130 dBA and 35 to 130 dBC with ±1.5 dB accuracy, A/C weighting and fast/slow time response

  • TypeEngineering Development Tools
  • Measures 30 to 130 dBA and 35 to 130 dBC for wide noise coverage
  • Accuracy within ±1.5 dB with 0.1 dB resolution for reliable readings
  • A and C frequency weighting plus Fast and Slow time weighting for versatile analysis
  • AC/DC output enables data logging and external recording
  • Auto power off with cancel option and low battery indication extend field use

Sound Level Meter 30-130 dBA

The Alion fortune HK Limited GM1357 is a digital sound level meter designed for engineering development and noise assessment tasks. It measures A-weighted levels from 30 to 130 dBA and C-weighted levels from 35 to 130 dBC with a stated accuracy of +/- 1.5 dB. The instrument conforms to IEC 651 Type 2 and ANSI S1.4 Type 2 standards. A 1/2 inch polarization capacitance microphone captures sound across a 31.5 Hz to 8.5 kHz frequency range.

Technicians needing Class 2 compliance.

This meter suits professionals conducting environmental noise surveys, industrial hygiene checks, or product validation where Type 2 tolerance is accepted. The five selectable measuring ranges from 30-130 up to 80-130 allow flexible gain staging. It is not for buyers who need Class 1 precision or laboratory-grade traceability tighter than the specified +/- 1.5 dB. Users requiring real-time data logging or computer connectivity should look at instruments offering those interfaces.

Accuracy +/- 1.5 dB defines suitability

The single specification that decides fit is the +/- 1.5 dB accuracy claim under IEC 651 and ANSI S1.4 Type 2 standards. If your procedure mandates a tighter tolerance, this model will not meet the requirement. If Type 2 tolerance is acceptable, the 0.1 dB resolution, FAST and SLOW time weightings, and dual A/C frequency weighting support typical compliance measurements. Power comes from four AA batteries or a 6 V DC adapter, neither included.

Helstu kostir

  • Measures 30 to 130 dBA and 35 to 130 dBC for wide noise coverage
  • Accuracy within ±1.5 dB with 0.1 dB resolution for reliable readings
  • A and C frequency weighting plus Fast and Slow time weighting for versatile analysis
  • AC/DC output enables data logging and external recording
  • Auto power off with cancel option and low battery indication extend field use

Tæknilýsing

TypeEngineering Development Tools

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How much power does the GM1357 draw when it runs continuously?

It operates on four 1.5 V AA batteries or a DC 6 V 100 mA adapter; batteries are not included.

What extra equipment is required before the GM1357 can take measurements?

You must supply four AA batteries or a 6 V DC adapter; no other accessories are needed.

Will the GM1357 work with older 1/2-inch polarised condenser microphones I already own?

The meter has a built-in 1/2 inch polarisation capacitance microphone and does not accept external microphone modules.

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