Introduction
The SOZZDA SL-5868ILEQ is a professional Pulse Integrating Sound Level Meter designed for accurate measurement of instantaneous, integrating, and percentile sound levels. This device adheres to GB/T 3785-2010 standard level 2 and IEC 61672:2013 Class 2 sound level meter requirements, as well as JJG 188-2017 standard. Featuring digital detection technology, a large dynamic LCD, and various data output options, it is suitable for a wide range of ambient noise monitoring and analysis applications.
Setup
Battery Installation
The device requires 4x 1.5V AAA (UM-4) batteries. To install:
- Locate the battery compartment cover on the back of the meter.
- Slide the cover open.
- Insert four AAA batteries, ensuring correct polarity (+/-).
- Close the battery compartment cover securely.
Figure 2: Battery Compartment with AAA Batteries Microphone and Windscreen Attachment
The 12.7mm (1/2") test condenser microphone is typically pre-attached. For optimal outdoor measurements or in windy conditions, attach the provided windscreen to the microphone head.
Power On
Press the red power button (usually labeled with a circle and a line) to turn on the device. The LCD will illuminate and display initial readings.
Calibration
For accurate measurements, calibrate the sound level meter using a Class 1 sound level calibrator. Refer to the calibrator's instructions for the specific procedure. The meter features a 'CAL' port, typically located on the side, for this purpose.
Figure 3: Side Ports for Output and Calibration
Operating Instructions
The SL-5868ILEQ offers various measurement modes and settings for comprehensive sound analysis.
Basic Measurement
- Turn on the meter using the power button.
- Ensure the microphone is clear of obstructions.
- Position the meter appropriately for the sound source.
- The instantaneous sound level will be displayed on the large LCD.
Frequency Weighting (A, C, Lin)
Press the "WEIGHTING" button to cycle through A, C, and Lin (Linear) frequency weightings. Each weighting is suitable for different applications:
- A-weighting: Mimics the human ear's response to sound, commonly used for environmental noise measurements.
- C-weighting: Provides a flatter response, useful for measuring peak sound pressure levels or noise from machinery.
- Lin (Linear) weighting: Measures the true sound pressure level across the entire frequency range without any weighting.
Time Weighting (Fast, Slow, Impulse)
Use the "FAST/SLOW" button to select the desired time weighting:
- Fast (F): Responds quickly to changes in sound level, suitable for capturing transient noises.
- Slow (S): Provides an averaged reading, useful for stable noise sources.
- Impulse (I): Designed to capture short, sharp impulsive sounds.
Range Control
The meter features manual, three-gear range control with a linear range greater than 60dB. Adjust the range using the "RANGE" button to ensure the measurement falls within the optimal display area, preventing overload or under-range readings.
Data Storage and Retrieval
The SL-5868ILEQ can store up to 800 groups of single measurements and perform regular measurements for up to 6 days. Stored data can be read and printed. During regular measurement, data can be checked even when paused.
Output Interfaces
The device supports multiple output options for data analysis and printing:
- AC Signal Output: For connecting to external recording devices.
- USB Data Cable Output: Connects to a PC for data transfer and analysis.
- Bluetooth Data Output: Optional feature for wireless data transfer, including connection to a Bluetooth printer.
Maintenance
Cleaning
Wipe the meter's exterior with a soft, dry cloth. Do not use abrasive cleaners or solvents. Keep the microphone clean and free of dust or debris.
Battery Replacement
Replace batteries when the low battery indicator appears on the display. Always use fresh 1.5V AAA (UM-4) batteries. Remove batteries if the device will not be used for an extended period to prevent leakage.
Storage
Store the sound level meter in its carrying case (Figure 5) in a cool, dry place, away from direct sunlight, extreme temperatures, and high humidity. Ensure the windscreen is properly placed to protect the microphone.
Figure 5: Sound Level Meter in Carrying Case
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Device does not power on. | Dead or incorrectly installed batteries. | Check battery polarity; replace with fresh batteries. |
| Inaccurate readings. | Needs calibration; microphone obstructed; incorrect weighting/range. | Perform calibration; ensure microphone is clear; verify frequency/time weighting and range settings. |
| Display is blank or erratic. | Low battery; internal error. | Replace batteries. If problem persists, contact support. |
| Cannot transfer data via USB/Bluetooth. | Incorrect cable connection; driver issues (USB); Bluetooth not paired. | Ensure secure connection; install necessary drivers; pair Bluetooth device correctly. |
If you encounter issues not listed here or if solutions do not resolve the problem, please contact customer support.
Specifications
| Feature | Detail |
|---|---|
| Model Number | SL-5868ILEQ |
| Measurement Range | 30 - 130 dB |
| Range | 25dB~130dB (A) |
| Testing Range | 30dB~90dB (dynamic scale display 10dB~100dB), 50dB~110dB (dynamic scale display 30dB~120dB), 70dB~130dB (dynamic scale display 50dB~140dB) |
| Microphone | 12.7mm (1/2') test condenser microphone |
| Frequency Weighting | A, C, and Lin (Linear) |
| Time Weighting | Fast (F), Slow (S), Impulse (I) |
| Accuracy | In accordance with IEC61672 standard, class 2 |
| Range Control | Manual, three gears, linear range > 60dB |
| Filter | Built in 1/1 and 1/3 octave filter |
| Display | Large screen dynamic LCD, instantaneous sound level, with analog ammeter display. |
| Output Interface | AC signal output, USB data cable output, Bluetooth data output (optional) |
| Calibration | Use class 1 sound level calibrator |
| Power Supply | 4x 1.5V AAA Size (UM-4) Battery |
| External Power | 5V |
| Weight | 185g (Not Including Batteries) |
| Dimensions | 227mm x 63mm x 26 mm |
| Operating Condition | Temperature: -10°C ~ 50°C |
| Certification | CE |
Standard Accessories
- Main Unit
- Windscreen
- Carrying Case (B04)
- Manual
- CD
- Data Cable
Optional Accessories
- Bluetooth Data Adapter
- Bluetooth printer
- Printer power adapter
- External power supply (5V)
User Tips
- For consistent readings, always ensure the microphone is positioned correctly and free from any obstructions.
- When measuring outdoor noise, always use the windscreen to minimize wind interference and protect the microphone.
- Regular calibration is crucial for maintaining measurement accuracy, especially for professional applications.
- Utilize the data storage function for long-term monitoring and trend analysis.
- Experiment with different frequency and time weightings to understand their impact on measurements for various sound types.
Warranty and Support
The SOZZDA SL-5868ILEQ Sound Level Meter is manufactured to high-quality standards and is CE certified. For warranty information, technical support, or service inquiries, please refer to the contact details provided with your purchase documentation or visit the official SOZZDA website. Please have your model number (SL-5868ILEQ) and purchase date ready when contacting support.
