Walfront MESTEK SL620 Sound Level Meter User Manual

1. Lebihview

The Walfront MESTEK SL620 is a digital sound level meter designed for measuring noise levels in various environments. It features a wide measurement range, a clear LCD backlight display, and functions for data retention, minimum/maximum value tracking, and automatic shutdown. This device is suitable for quality control in factories, offices, homes, schools, and construction sites.

Ciri-ciri utama termasuk:

• Measurement range of 35 to 135 dB.
• Paparan LCD dengan lampu latar untuk bacaan yang jelas.
• Data hold, MIN/MAX value tracking.
• Automatic and manual power-off options.

2. Maklumat Keselamatan

Sila baca dan fahami semua arahan keselamatan sebelum mengendalikan peranti. Kegagalan untuk mengikut arahan ini boleh mengakibatkan kecederaan atau kerosakan pada peranti.

• Jangan cuba membuka atau mengubah suai peranti. Tiada bahagian yang boleh diservis pengguna di dalamnya.
• Jauhkan peranti daripada air, kelembapan dan suhu yang melampau.
• Use only the specified battery type (3 x 1.5V AAA). Ensure correct polarity during installation.
• Tanggalkan bateri jika peranti tidak akan digunakan untuk tempoh yang lama untuk mengelakkan kebocoran.
• Elakkan daripada menjatuhkan peranti atau terkena impak yang kuat.
• Bersihkan peranti dengan kain lembut dan kering. Jangan gunakan pembersih atau pelarut yang melelas.

3. Komponen dan Susun Atur Produk

Familiarize yourself with the different parts of your sound level meter:

Figure 3.1: Labeled diagram of the MESTEK SL620 Sound Level Meter, showing the microphone, display screen, data retention/backlight button, function switch button, time-weighted switching button, and on/off button.

Figure 3.2: The MESTEK SL620 Sound Level Meter with its approximate dimensions: 150mm length, 55mm width, and 30mm height.

Figure 3.3: Close-up of the device's microphone, protected by a foam windscreen.

4. Persediaan

4.1 Pemasangan Bateri

1. Cari penutup petak bateri di bahagian belakang peranti.
2. Luncurkan atau buka klip penutup untuk membuka petak.
3. Insert three (3) 1.5V AAA batteries, ensuring correct polarity (+/-) as indicated inside the compartment.
4. Gantikan penutup petak bateri dengan selamat.

Rajah 4.1: Belakang view of the sound level meter, showing the battery compartment where three AAA batteries are installed.

5. Arahan Operasi

5.1 Menghidupkan/Mematikan

• Untuk menghidupkan peranti, tekan butang Hidup/Mati butang.
• Untuk mematikan peranti, tekan dan tahan butang Hidup/Mati button for a few seconds. The device also features an automatic shutdown function to conserve battery power.

5.2 Mengambil Pengukuran

1. Turn on the device. The current sound level will be displayed on the LCD screen.
2. Position the microphone towards the sound source you wish to measure.
3. Read the decibel (dB) value displayed on the screen.

Figure 5.1: The sound level meter held in hand, showing a reading of 60.8 dBA on its LCD screen.

5.3 Butang Fungsi

• Butang UNIT: Press to switch between different measurement units or modes if available (e.g., dBA, dBC). For this model, it primarily controls time weighting.
• Butang SEL: This button is used for selecting functions or confirming settings.
• MIN/MAX Button: Press this button to cycle through current, minimum, and maximum recorded sound levels.
• Data Hold / Backlight Button: A dedicated button (often on the side or labeled 'H/BL') allows you to hold the current reading on the display. Pressing it again may release the hold. Long-pressing this button typically activates or deactivates the display backlight.

5.4 Pemberat Masa (PANTAS/PERLAHAN)

The device supports two time weighting modes:

• FAST (125 ms): Used for measuring rapidly changing noise levels. This is the default setting.
• SLOW (1 second): Used for measuring average noise levels where the sound value changes significantly.

To switch between FAST and SLOW modes, use the designated button (often labeled 'F/S' or integrated with 'UNITS').

5.5 Frequency Weighting (A-Weighting)

The MESTEK SL620 uses A-weighting (A characteristic) for its measurements. A-weighting is commonly used for environmental noise measurements and is designed to approximate the human ear's response to sound.

6. Penyelenggaraan

6.1 Pembersihan

Wipe the device with a soft, dry cloth. Do not use liquid cleaners, solvents, or abrasive materials, as these can damage the casing atau komponen dalaman.

6.2 Penyimpanan

When not in use for extended periods, store the device in a cool, dry place, away from direct sunlight and extreme temperatures. Remove the batteries before storage to prevent potential leakage and damage.

6.3 Penggantian Bateri

When the battery indicator appears on the display, replace all three AAA batteries promptly to ensure accurate measurements and proper device function. Refer to Section 4.1 for battery installation instructions.

7. Penyelesaian masalah

If you encounter issues with your MESTEK SL620 Sound Level Meter, refer to the following common problems and solutions:

• Peranti tidak dihidupkan:
  • Periksa sama ada bateri dipasang dengan betul dengan kekutuban yang betul.
  • Gantikan dengan bateri baharu jika bateri sedia ada telah kehabisan kuasa.
• Bacaan tidak tepat:
  • Ensure the microphone is clean and unobstructed.
  • Verify that the device is not exposed to strong electromagnetic fields.
  • Periksa tahap bateri; bateri yang rendah boleh menjejaskan ketepatan.
• Paparan malap atau tidak berfungsi:
  • Periksa tahap bateri dan ganti jika perlu.
  • Ensure the backlight function is activated if operating in low light conditions.

Jika masalah berterusan selepas mencuba penyelesaian ini, sila hubungi sokongan pelanggan.

8. Spesifikasi

9. Waranti dan Sokongan

Specific warranty information for the Walfront MESTEK SL620 Sound Level Meter is not provided in this manual. Please refer to the product packaging or the retailer's webtapak untuk butiran jaminan.

For technical support or inquiries, please contact your point of purchase or the Walfront customer service department.