The HTC CAL-900 Sound Level Calibrator is a precision instrument designed to ensure the accuracy of sound level meters and microphones. It offers dual-level calibration at 94 dB and 114 dB at 1000 Hz, with an accuracy of ±0.3 dB, making it suitable for calibrating both 1-inch and ½-inch microphones. This calibrator adheres to international standards, including GB/T15173 and IEC942, ensuring reliable and consistent performance.
Key Features:
- Dual-Level Calibration: Provides calibration at 94 dB and 114 dB at 1000 Hz, accommodating various measurement requirements.
- High Accuracy: ±0.3 dB, ensuring precise calibration of sound measurement instruments.
- Frequency Stability: Operates at 1000 Hz with a tolerance of ±0.01%, ensuring consistent calibration.
- Microphone Compatibility: Suitable for calibrating both 1-inch and ½-inch microphones.
- Temperature Coefficient: 0 to 0.01 dB/°C, maintaining accuracy across a range of operating temperatures.
- Altitude Effects: Approximately 0.1 dB decrease for each 2000 feet increase in altitude from sea level to 12,000 feet elevation, or comparable atmospheric pressure change.
- Operating Temperature: -10°C to 50°C.
- Storage Temperature: -40°C to 65°C (with batteries removed).
- Power Supply: 4 x 1.5V AAA batteries (UM-4).
- Dimensions: 137 mm (H) x 51 mm (W) x 51 mm (D).
- Weight: Approximately 200 grams.
Applications:
- Sound Level Meter Calibration: Ensures the accuracy of sound level meters used in various environments.
- Microphone Calibration: Maintains the precision of microphones in laboratory and field settings.
- Environmental Noise Monitoring: Assists in calibrating instruments used for monitoring environmental noise levels.
- Industrial Safety Assessments: Ensures the accuracy of instruments measuring noise levels in industrial environments.
- Educational Purposes: Serves as a reliable tool for teaching and learning about sound measurement and calibration techniques
