The SPL-8930-CAL Sound Level Meter Calibrator is used to verify the SPL Meter is functioning properly and if necessary, re-calibrate. Three way selector button allows for calibration at 94dB, 104dB or 114dB. For use with American Recorder SPL meters or any SPL meter with 1/2" or smaller diameter microphones. Operates with 9v DC battery.
FEATURES:
- Meets IEC 60942:2018, Class2 Standard
- Stays accurate even in extreme humidity conditions
- Suitable for all sound level meters with 1/2 inch (13.22mm) microphone size
- Calibration frequency at 1KHz with 3 levels - 94dB, 104dB and 114dB
- Vivid LED display
- Low power indicator light
- Battery powered
SPECIFICATIONS:
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Calibration frequency
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1000Hz
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Frequency accuracy
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±1.7%
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Sound Pressure Level
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94dB / 104dB / 114dB
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Sound Pressure accuracy
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±0.4dB
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Microphone head cavity diameter
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13.2mm (½")
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Stabilization time
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10 seconds
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Total distortion
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<3%
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Ambient Condition Influence
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Temperature and humidity influence: <0.4dB @ 0...40°C and 25...90%RH
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Static pressure influence: <0.1dB @65...108kPa
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Stability levels
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Short term stability (<60s): ±0.15dB
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Stability after 1 year with normal use: ±0.35dB
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LED indicator
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1 green/Red: ready/low power; 3 green: 114/101/94dB
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Operating Environment
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0~40°C; 25~90%RH
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Storage Environment
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-20~50°C; <90%RH
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Battery
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2 x AA Alkaline battery
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