Brüel & Kjær Type 4231 Sound Calibrator B&K 94 & 114 db SPL-1000Hz LEVEL METER

***THIS ITEM IS USED

USED, WORKING, GOOD CONDITION

Acoustic Specifications

• Calibration Frequency: 1000 Hz ±0.1%

• Sound Pressure Levels (SPL):

  • Principal Level: 94.0 dB ±0.2 dB re 20 µPa (1 Pa)

  • Step Level (+20 dB Button): 114.0 dB ±0.2 dB re 20 µPa

• Calibration Accuracy: ±0.2 dB at reference conditions

• Total Harmonic Distortion (THD): < 1%

• Level Stability:

  • Short-term: Better than 0.02 dB

  • Long-term (1 Year): Better than 0.05 dB

  • Stabilization Time: < 5 seconds

Standards & Compliance

• Acoustic Standards: Conforms to IEC 60942 (2017) Class 1, IEC 60942 (2003) Class LS & Class 1, and ANSI S1.40-2006

Microphone Compatibility

• Direct Fitting: Standard 1-inch (23.77 mm) microphones

• Included Adapter (UC-0210): Fits standard ½-inch microphones

• Optional Adapters: Available for ¼-inch (DP-0775) and ⅛-inch (DP-0774) microphones

Physical & Environmental

• Dimensions: 40 mm (H) × 72 mm (W) × 72 mm (D) / 1.5 in × 2.8 in × 2.8 in

• Weight: 150 g (0.33 lb) including batteries

• Operating Temperature: -10 °C to +55 °C (14 °F to 131 °F)

• Operating Pressure Range: 65 to 108 kPa

• Humidity: 10% to 90% RH (non-condensing)

Power & Battery Life

• Batteries: 2 × 1.5 V AA alkaline batteries (IEC Type LR6)

• Battery Lifetime: ~200 hours continuous operation at +23 °C

• Auto Power Off: Turns off automatically when removed from the microphone cavity

INCLUDES (1) B&K 4321 SOUND CALIBRATOR, 1/2" ADAPTER, CASE, BATTERY'S

S/N: 2545721

FREE shipping & handling continental USA (48 STATES), Excludes   AK, HI, PR, GU, VIRGIN/MARSHALL ISLANDS.
Payment must be made within 4 days

**MOST ITEMS SHIP THE SAME DAY**

**INTERNATIONAL BIDDERS PLEASE BE AWARE WE DO NOT SHIP FIRST CLASS OUTSIDE  THE  USA, NO EXCEPTIONS**

IF YOU SHOULD HAPPEN TO HAVE ANY ISSUE WITH YOUR ITEM ONCE RECEIVED 
PLEASE CONTACT ME FIRST SO I CAN TRY AND RESOLVE ANY PROBLEM FIRST HAND THANK YOU.

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