Landtek MILA44200 Decibel Meter Sound Level Data Logger User Manual

1. Introduction

This manual provides detailed instructions for the safe and effective operation of your Landtek MILA44200 Decibel Meter Sound Level Data Logger. This device is designed for precise sound level measurement and data logging in various environments, including industrial, residential, and commercial settings. Please read this manual thoroughly before use to ensure optimal performance and to prevent damage.

2. Product Overview

The Landtek MILA44200 is a portable sound level meter featuring data logging capabilities, A/C weighting, and a 3-color light alarm system. It is equipped with a condenser microphone for accurate measurements.

Key Features:

• Data Logging: Stores up to 31,000 data points.
• A/C Weighted Measurement: Selectable A-weighting for general sound levels and C-weighting for low-frequency sound content.
• Measurement Range: 30~130dB (A) / 35~130dB (C) with an accuracy of ±1.5 dB.
• Frequency Range: 31.5 Hz to 8,500 Hz.
• 3-Color Light Alarm: Visual alerts for high (red), low (yellow), and normal (green) noise levels.
• USB Connectivity: For real-time recording, data export, analysis, and graph printing on Windows 7, 10, and 11.
• Rechargeable Battery: Built-in 1000mAh lithium battery, charged via USB.
• Multifunctional: Adjustable date/time, Fast/Slow response, data hold/delete, automatic shutdown, record function, Hi/Low alarm settings, and calibration knob.

Components Included:

• 1 x Landtek MILA44200 Decibel Meter
• 1 x Windproof Sponge Ball
• 1 x USB Cable

3. Setup

1. Charge the Device: Connect the decibel meter to a USB power source using the provided USB cable. The built-in 1000mAh lithium battery will begin charging.
2. Attach Windproof Sponge Ball: Gently place the windproof sponge ball over the microphone at the top of the device. This helps to reduce wind noise during outdoor measurements.
3. Power On: Press and hold the Power button (red button with power symbol) to turn on the device.

4. Operating Instructions

4.1 Basic Operation

• Power On/Off: Press and hold the Power button.
• Automatic Shutdown: The device features an automatic shutdown function to conserve battery. This can be configured in the settings.

4.2 Measurement Settings

• A/C Weighting Selection: Press the A/C button to toggle between A-weighting (dBA) and C-weighting (dBC).
  A-weighting simulates the human ear's response to low-intensity noise, suitable for ambient noise. C-weighting simulates the human ear's response to high-intensity noise, suitable for machine motor sound pressure analysis.
• Fast/Slow Response: Press the F/S button to switch between Fast and Slow response times.
  Fast captures current readings quickly. Slow captures the average reading within 1 second.
• Data Hold (MAX/HOLD): Press the HOLD button to freeze the current reading on the display. Press MAX to display the maximum measured value.

4.3 Alarm Function

The device features a 3-color light alarm system for visual indication of noise levels:

• Green: Normal noise levels.
• Yellow: Low alarm threshold reached or exceeded.
• Red: High alarm threshold reached or exceeded.

Alarm thresholds (Hi/Low) can be set by the user. If the indicator function is off, the lights will not activate.

4.4 Calibration

A calibration knob is located on the back of the device for adjustment. Refer to the detailed software manual for specific calibration procedures.

5. Data Logging and PC Connection

The Landtek MILA44200 can store up to 31,000 data points internally. For real-time recording, data export, analysis, and graph printing, connect the device to a computer.

5.1 Connecting to PC

1. Ensure the decibel meter is powered on.
2. Connect the device to your computer using the provided USB cable.
3. The device is compatible with Windows 7, Windows 10, and Windows 11 operating systems.

5.2 Software and Data Export

Specialized software is required for data management. This software allows you to:

• Download recorded data.
• Perform real-time data sampling and analysis.
• Print graphs and data reports.

For software download and a detailed user manual, please visit: https://cd50.net/442/

6. Maintenance

• Cleaning: Use a soft, dry cloth to clean the device. Do not use abrasive cleaners or solvents.
• Battery Care: Recharge the built-in lithium battery regularly, especially if the device will not be used for an extended period, to maintain battery health.
• Storage: Store the device in a cool, dry place away from direct sunlight and extreme temperatures.
• Microphone Protection: Always keep the windproof sponge ball on the microphone when not in use to protect it from dust and physical damage.

7. Troubleshooting

• Device Not Powering On: Ensure the battery is charged. Connect to a USB power source and try again.
• Inaccurate Readings: Check if the windproof sponge ball is properly installed. Ensure the device is calibrated. Avoid measuring in strong winds or near strong electromagnetic fields.
• PC Connection Issues: Verify the USB cable connection. Ensure the correct software drivers are installed. Try a different USB port or computer.
• Screen Readability Outdoors: The screen may be difficult to read in direct sunlight. Try to operate the device in shaded areas for better visibility.

8. Specifications

9. Warranty and Support

For warranty information, please refer to the documentation provided at the time of purchase or contact your seller. For technical support, software downloads, and additional resources, please visit the manufacturer's support website or the link provided in Section 5.2: https://cd50.net/442/