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Product Description

The Sound Level Meter is a versatile instrument used for measuring sound levels accurately. It is available in two types: AS-156A with an accuracy of ±2dB and AS-156B with an accuracy of ±1dB. This meter is capable of storing up to 30 groups of measurement results and conditions, allowing for easy reference and analysis. It offers multiple measurement parameters, including Lp (sound level), Leq (Equivalent Continuous A Sound Level), Lmax (Maximum Sound Level), and LN (Percent of all readings over the alarm value set).

Key Features:

• DC output: 10mV/dB for convenient data analysis.
• Auto range selection and digital display ensure precise readings without errors.
• Memory function allows storing and recalling 30 sets of measurement data and conditions.
• Offers options for weighting (A, C, F) and response times (Fast, Slow) to suit different measurement requirements.
• Provides four measurement parameters for comprehensive analysis.
• USB data output enables easy connection to a computer for data transfer and analysis.
• Optional Bluetooth data output is also available.

Product Parameters:

• Resolution: 0.1dB
• Accuracy:
• AS-156A: ±2dB
• AS-156B: ±1dB
• Measurable Parameters: Lp (sound level), Leq (Equivalent Continuous A Sound Level), Lmax (Maximum Sound Level), LN (Percent of all readings over the alarm value set)
• Measuring Range:
• Lp: 30~130dB
• Leq: 35~130dB
• LN: 0~100%
• Frequency Weighting: "A"/"C"/"F" (Flat)
• Time Weighting: "Fast" (125ms) / "Slow" (1 second)
• Microphone: 1/2 inch electret condenser type
• Memory: Stores 30 groups of measurement conditions and data
• Built-In Calibration Signal: 94dB at 1kHz (sinusoidal)
• Alarm Value Set: 30~130 dB
• Frequency Range:
• AS-156A: 20~8,000Hz
• AS-156B: 20~12,500Hz
• Alarm Output: LED and optional relay contact (NC)
• Size: 140x70x30 mm
• Power Supply: 4x1.5v AAA Um-4 Battery
• Weight: 130g (excluding batteries)

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