Martindale SPC70 Class 2 Sound Level Calibrator

SKU: MARTSPC70
  • Produces tones at 94dB and 114dB with 1kHz frequency
  • Tones accurate to ±0.5dB with less than 3% harmonic distortion
  • Calibrates any Class 2 sound meter with microphone less than ø25mm
More Info
Typically ships in 1-3 working days

Martindale SPC70 Class 2 Sound Level Calibrator

The Martindale SPC70 Sound Level Calibrator is suitable for calibrating class 2 sound level meters. It produces constant 1000Hz tones at 94dB and 114dB which means that a meter can be checked and calibrated at two points within its range. The tones are accurate to ±0.5dB and there is less than 3% total harmonic distortion. It is compatible with any meter that has a microphone up to 25mm in diameter but is specifically intended for the Martindale SP79 Class 2 Sound Level Meter.

Martindale part number: MARSPC70

Key Features

  • Two tones: 94dB and 114dB
  • 1kHz reference frequency
  • Accuracy: ±0.5dB
  • Max microphone diameter: ø25mm
  • BS EN 60942 Class 2

What's In The Box?

  • Martindale SPC70 Class 2 Sound Level Calibrator
  • 1.2” microphone adaptor
  • Carry case
  • Instructions for Martindale SPC70
Specification

CALIBRATION

  • Output sound pressure levels: 94dB and 114dB rel 20µPa under reference conditions
  • Output frequency: 1000Hz ± 2%
  • Accuracy of sound pressure level: ± 0.5dB
  • Total harmonic distortion: <3%

GENERAL

  • Power: 1 x 9V, PP3 alkaline battery (IEC 6LR61, NEDA 1604A)
  • Battery life: 40 hours approx. (alkaline battery)
  • Low battery indication: Power ON/Low Battery LED illuminates red
  • Dimensions: 113 x 63 x 44mm
  • Weight: 170g approx including battery

ENVIRONMENTAL

  • Operating conditions: Temperature: 0°C to 40°C; relative humidity: 10 to 90% R.H.; atmospheric pressure: 650 to 1080 hPa
  • Storage conditions: Temperature: -10°C to 50°C; relative humidity: 0 to 70% R.H.

FUNCTIONALITY

  • Conforms to BS EN 60942 Class 2

EMC

  • Conforms to BS EN 55011, BS EN 61000-6-2