R-One Techlabs Private Limited

Precision Calibration:

• The CAL-900 provides precise and reliable calibration of sound level meters, which is critical for ensuring the accuracy of sound measurement instruments used in regulatory compliance, industrial testing, and environmental assessments.

Calibration Frequency:

• The CAL-900 typically offers calibration at standard frequencies, often around 1 kHz, which is commonly used for sound level meter calibration. This ensures consistency across different sound level meters and measuring instruments.

Sound Pressure Level Output:

• The CAL-900 produces a known sound pressure level, often around 94 dB or 114 dB, which is used to check the calibration of sound measuring instruments. These output levels are generally in line with international standards for calibration.

Measurement Range:

• The SL-1350 typically offers a wide sound level measurement range, often from 30 dB to 130 dB or similar, allowing it to detect both very quiet sounds and loud noises. This broad range makes it versatile for different environments, from offices and homes to industrial settings.

Frequency Weighting:

• The meter often includes multiple frequency weighting options, such as A-weighting (dBA) and C-weighting (dBC). A-weighting is commonly used for environmental and occupational noise assessments because it adjusts the measurement to reflect the human ear’s sensitivity to different frequencies. C-weighting is used for measuring peak sound levels or in situations where low-frequency sounds are significant.

Digital Display:

• The SL-1350 features a clear digital display that shows real-time sound level measurements in decibels (dB). The display is usually large enough for easy reading, even in dimly lit environments, and may include additional information such as measurement mode and battery status.

Multiple Measurement Modes:

• The sound level meter may offer different measurement modes, including Fast, Slow, and Peak responses. The Fast mode is useful for dynamic sound environments, while the Slow mode averages measurements for a more stable reading. The Peak mode measures the maximum level of sound pressure.

Measurement Range:

• The HTC SL-1352 typically features a broad measurement range from 30 dB to 130 dB, making it suitable for measuring both quiet and very loud environments. This range covers the typical noise levels found in most industrial, commercial, and residential settings.
• The wide range allows users to assess sound levels in environments as varied as quiet offices or home spaces to loud industrial environments and concerts.

Frequency Weighting (A, C, Z):

• The meter often includes frequency weighting filters such as A-weighting, C-weighting, and Z-weighting:
  • A-weighting (dBA): This is the most commonly used filter, which adjusts the frequency response to approximate the human ear's sensitivity to different frequencies. It is widely used in environmental and occupational noise assessments.
  • C-weighting (dBC): Used for measuring peak sound levels or testing lower frequencies, which may be more relevant in certain industrial applications.
  • Z-weighting (dBZ): A flat response that does not apply any frequency adjustment, used for specialized measurements where no frequency weighting is required.