1. Pengenalan
The Mastech MS6612 is a digital luxmeter designed for measuring illuminance. It features a large LCD display with backlight and a bar graph for easy reading. This device offers automatic and manual range switching, data hold, peak value measurement, relative value measurement, and zero calibration functions. It is capable of measuring up to 200,000 Lux or 20,000 Foot-Candles (Fc).
2. Maklumat Keselamatan
Sila baca dan fahami semua arahan keselamatan sebelum mengendalikan peranti ini. Kegagalan mematuhi arahan ini boleh mengakibatkan kecederaan atau kerosakan pada meter.
- Do not operate the meter in environments with explosive gas, vapor, or dust.
- Avoid exposing the meter to extreme temperatures or high humidity.
- Tanggalkan bateri jika meter tidak digunakan untuk tempoh yang lama bagi mengelakkan kebocoran.
- Do not attempt to repair or modify the meter. Refer all servicing to qualified personnel.
- Pastikan meter bersih dan kering.
3. Produk Lebihview
The Mastech MS6612 Digital Luxmeter consists of a main unit with an LCD display and control buttons, and a silicon photoelectric diode sensor for light detection.
Rajah 1: Depan view of the Mastech MS6612 Digital Luxmeter. This image shows the main body of the device, including the large LCD screen, control buttons, and the light sensor located at the top.
Komponen Utama:
- Paparan LCD: 3½ digits with analog bar display for clear readings.
- Butang Kawalan: For various functions such as power, range, hold, peak, relative, zero, unit conversion, and mute.
- Sensor Cahaya: Silicon photoelectric diode for accurate light measurement.
- Petak Bateri: Located at the rear for a 9V battery.
4. Persediaan
4.1 Pemasangan Bateri
- Cari penutup petak bateri di belakang meter.
- Gunakan pemutar skru (jika perlu) untuk membuka petak bateri.
- Insert one 9V (IEC 6LR61) battery, observing the correct polarity (+/-).
- Gantikan penutup petak bateri dan selamatkannya.
Note: A low battery indicator will appear on the display when the battery needs replacement.
5. Arahan Operasi
5.1 Hidupkan/Mati Kuasa
- Tekan ke KUASA butang untuk menghidupkan meter.
- Tekan ke KUASA button again to turn the meter off.
- The meter features an automatic power-off function, which will turn off the device if no keys are operated for more than 10 minutes.
5.2 Pengukuran Asas
- Hidupkan meter.
- Point the light sensor towards the light source to be measured.
- The illuminance value will be displayed on the LCD. The meter automatically selects the appropriate range.
5.3 Range Switching (Auto/Manual)
The MS6612 supports both automatic and manual range switching.
- In auto-ranging mode, the meter automatically selects the best measurement range.
- Tekan ke JULAT button to switch between auto and manual ranging modes. In manual mode, you can cycle through available ranges.
- If the measured value exceeds the current range in manual mode, the LCD will display "OL" (Overload).
5.4 Fungsi Pegangan Data
Untuk membekukan bacaan semasa pada paparan:
- Tekan ke TAHAN button. The "HOLD" indicator will appear on the display.
- Tekan ke TAHAN button again to release the data hold and resume live measurement.
5.5 Maximum/Minimum Value Measurement
Kepada view the maximum or minimum illuminance recorded during a measurement session:
- Tekan ke MAX/MIN button. The display will show the maximum recorded value.
- Tekan MAX/MIN again to cycle to the minimum recorded value.
- Tekan MAX/MIN a third time to exit this mode and return to live measurement.
5.6 Peak Value Measurement
This function captures the highest instantaneous illuminance value.
- Tekan ke PUNCAK button to activate peak measurement. The "PEAK" indicator will appear.
- The display will show the highest illuminance detected since activating the function.
- Tekan PUNCAK sekali lagi untuk keluar dari mod ini.
5.7 Relative Value Measurement
This function allows you to set a reference point and measure the difference from that point.
- In a stable light environment, press the REL button. The current reading becomes the reference, and the display will show "0".
- Subsequent measurements will show the difference (positive or negative) from this reference value.
- Tekan REL again to exit relative measurement mode.
5.8 Zero Calibration Function
To ensure accuracy, especially in low light conditions, perform a zero calibration.
- Place the light sensor in a completely dark environment (e.g., cover it with an opaque cap).
- Tekan ke SIFAR button. The display should read "0.00".
- This calibrates the meter to account for any residual sensor output in darkness.
5.9 Unit Conversion (Fc/Lux)
The meter can display measurements in Lux or Foot-Candles (Fc).
- Tekan ke UNIT button to toggle between Lux and Fc units.
- The selected unit will be indicated on the LCD.
- Penukaran: 1 Fc = 10.764 Lux; 1 Lux = 0.09290 Fc.
5.10 Touch Tone and Mute Function
The meter may emit a touch tone when buttons are pressed. This can be muted.
- Refer to the specific button on your device for muting the touch tone.
6. Penyelenggaraan
6.1 Pembersihan
- Lap meter casing dengan lembut, damp kain. Jangan gunakan pembersih atau pelarut yang melelas.
- Keep the light sensor clean and free from dust or smudges to ensure accurate readings. Use a soft, lint-free cloth.
6.2 Penggantian Bateri
Replace the 9V battery when the low battery indicator appears on the display. Follow the steps in Section 4.1 for battery installation.
6.3 Penyimpanan
- If storing the meter for an extended period, remove the battery to prevent leakage and potential damage.
- Simpan meter di tempat yang sejuk dan kering, jauh daripada cahaya matahari langsung dan suhu yang melampau.
7. Penyelesaian masalah
| Masalah | Kemungkinan Punca | Penyelesaian |
|---|---|---|
| Meter tidak dihidupkan. | Bateri mati atau tidak dipasang dengan betul. | Check battery polarity, replace battery. |
| "OL" displayed on screen. | Measurement value exceeds current range (manual mode). | Switch to a higher range or enable auto-ranging. |
| Bacaan yang tidak tepat. | Dirty sensor, uncalibrated zero, or incorrect range. | Clean sensor, perform zero calibration, ensure correct range. |
| Penunjuk bateri rendah. | Kuasa bateri rendah. | Ganti bateri 9V. |
8. Spesifikasi
| Parameter | Nilai |
|---|---|
| Julat Pengukuran | 20, 200, 2000, 20000, 200000 Lux 20, 200, 2000, 20000 Fc |
| Paparan | 3½ digits, max reading of 1999, with analog bar display |
| Sensor | Silicon photoelectric diode |
| Measured Spectral Range | 320~730nm |
| SampKadar ling | ≥2 times/s |
| Suhu Operasi | -10~50 °C, max 80% RH (Non-Condensed) |
| Suhu Penyimpanan | -10~50 °C, max 80% RH (Non-Condensed, removing batteries) |
| Persekitaran Operasi | Penggunaan dalaman |
| Ketinggian | 2000m highest |
| Bekalan Kuasa | 1 x 9V, IEC 6LR61 battery |
| Hayat Bateri | lebih kurang 200 jam |
| Dimensi (HxWxD) | 190 mm x 89 mm x 42.5 mm (7.48 x 3.50 x 1.67 inci) |
| Berat (tanpa bateri) | Lebih kurang 360 g (12.7 oz) |
| Berat (dengan bateri) | Lebih kurang 420 g (14.8 oz) |
Illuminance Unit Conversion:
- 1 Foot-Candle (Fc) = 10.764 Lux
- 1 Lux = 0.09290 Foot-Candle (Fc)
9. Waranti dan Sokongan
Mastech products are designed for reliability and performance. For specific warranty information, please refer to the warranty card included with your purchase or visit the official Mastech website. For technical support or service inquiries, please contact Mastech customer service through their official channels.
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