Sound Level Meters

CR:251B Digital Sound Level Meter


CR:251B is in right of picture

  • Accuracy to IEC-651 (BS EN 60651) Type 1 "Precision" grade.
  • Ranges: 25 to 140 dB(A) and 43 to 140 dB(C) for SPL and Lmax.
  • Slow, Fast and Impulse time weightings.
  • A and C frequency weightings.
  • Momentary sound level (SPL) and maximum sound level (Lmax).
  • AC 2.2. Volts for FSD (can be used with Jade 2) and log DC at 25mV/dB with continuous range from 25 to 140dB.
  • 3.5 digit back-lit LCD with overload, under range, over range, low battery, and display hold indicators.
  • Removable preamplifier (MV:200B) to allow use with extension cables.
  • Powered from 2 x 6LR61 9v cells. Over 40 hours continuous operation.
  • 325mm x 75mm x 26mm, weight 480g
  • Available individually or as a complete measurement kit.

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