AutoTest® Digital Sound Level Meter Calibrator

STEP 1: Connect the Calibrator
Insert the sound level meter microphone into the calibrator cavity.

STEP 2: Generate the Reference Signal
Switch on the calibrator and allow the output signal to stabilise.

STEP 3: Verify the Reading
Check the displayed sound level against the reference value and adjust the meter if required.

• Generates a stable reference signal for accurate calibration checks
• Compatible with ½-inch microphone sound level meters
• Compact, lightweight and battery-operated design
• Complies with IEC 60942:2003 Class 2 requirements
• Ideal for field, workshop and environmental noise monitoring applications
• Backed by local support, calibration and service

Calibration Performance:

• Generated sound pressure level: 94dB ±0.5dB
• Generated frequency: 1000Hz ±1%
• Method: Dynamic speaker
• Applicable microphone: ½-inch microphone

Performance Characteristics:

• Output stabilising time: 15 seconds or less after microphone is inserted
• Distortion rate: 0.5% or less

Power:

• Power supply: 9V PP3 battery x 1
• Battery life: Approximately 20 hours continuous operation (when using PP3 type dry cell batteries at 25°C)

Physical Characteristics:

• Dimensions: 60mm (H) × 100mm (D)
• Weight: Approximately 200g

Operating Conditions:

• Operating temperature: -10°C to +50°C
• Storage temperature: -20°C to +60°C not including the battery
• Operating humidity: 25% to 90% RH with no condensation
• Storage humidity: 10% to 90% RH with no condensation

• Class 2 sound level meters

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