1. Pengenalan
The REED Instruments R8140 LED Light Meter is designed for accurate measurement of ambient light levels. It is capable of measuring various light sources, including white, red, green, yellow, and blue LEDs, as well as standard incandescent light sources. This manual provides essential information for the proper setup, operation, maintenance, and troubleshooting of your R8140 light meter.
2. Maklumat Keselamatan
Please read all safety information before operating the device. Failure to follow these instructions may result in damage to the device or personal injury.
- Jangan cuba membaiki atau mengubah suai peranti ini. Rujuk semua servis kepada kakitangan yang berkelayakan.
- Jauhkan peranti daripada air dan cecair lain.
- Elakkan daripada mendedahkan peranti kepada suhu yang melampau atau cahaya matahari langsung untuk tempoh yang lama.
- Ensure correct battery polarity when installing batteries. Remove batteries if the device will not be used for an extended period.
- Buang bateri dan peranti mengikut peraturan tempatan.
3. Ciri-ciri Produk
The REED R8140 LED Light Meter offers a range of features for precise light measurement:
- Measures ambient light levels of white, red, yellow, green, and blue LED light, as well as visible light in Foot-candles (Fc) or Lux (Lx).
- Large, backlit LCD display for clear readings in various lighting conditions.
- Detachable and rotatable light sensor for flexible positioning and one-handed operation.
- Auto-ranging feature to optimize measurement resolution.
- Min/Max function to record the lowest and highest readings.
- Data Hold function to freeze the current reading on the display.
- Cosine and color corrected measurements for enhanced accuracy.
- User-adjustable parameter for specialized light sources.
- Low battery indicator and auto shut-off function to conserve battery life.
4. Produk Lebihview
Rajah 1: Depan view of the REED R8140 LED Light Meter. This image shows the main unit with its large LCD display, control buttons (Hold, Min/Max, Range, Set, fc/lx, Backlight), and the detachable light sensor connected via a coiled cable. The display currently shows a reading of 531 Lux.
4.1. Komponen
- Sensor Cahaya: Detachable sensor with a protective cap, connected by a coiled cable.
- Paparan LCD: Large display showing measurement values, units (Lux/Fc), battery status, and function indicators (HOLD, MIN, MAX).
- Butang Kawalan:
- Butang Lampu Belakang: Aktifkan/nyahaktifkan lampu latar paparan.
- Butang TAHAN: Freezes the current reading.
- MIN/MAX Button: Toggles between minimum, maximum, and current readings.
- Butang RANGE: Manually selects measurement range (if not in auto-ranging).
- fc/lx Button: Switches between Foot-candles and Lux units.
- Butang SET: Used for setting user-adjustable parameters.
- Petak Bateri: Located on the rear of the device.
5. Persediaan
5.1. Pemasangan Bateri
- Cari penutup petak bateri di belakang meter.
- Slide the cover open or unscrew it, depending on the design.
- Masukkan dua (2) bateri AA, pastikan kekutuban (+ dan -) yang betul seperti yang ditunjukkan di dalam petak.
- Gantikan penutup petak bateri dengan selamat.
5.2. Sambungan Sensor
The R8140 features a detachable sensor. Ensure the coiled cable from the sensor is securely plugged into the corresponding port on the main meter unit. The sensor can be rotated for optimal positioning during measurements. Remove the protective cap from the sensor before use.
Figure 2: The REED R8140 LED Light Meter shown alongside its protective carrying case. The meter is ready for use, with its sensor connected and cap removed, indicating it's prepared for measurement or storage.
6. Operasi
6.1. Hidupkan/Mati Kuasa
Tekan ke Butang Lampu Latar (red button with light bulb icon) briefly to turn the meter on. The meter will perform a self-test and display the current light reading. The meter features an auto shut-off function to conserve battery life after a period of inactivity. To manually turn off, press and hold the Butang Lampu Latar.
6.2. Selecting Measurement Units (Fc/Lx)
Tekan ke fc/lx Button to toggle between Foot-candles (Fc) and Lux (Lx) measurement units. The selected unit will be displayed on the LCD.
6.3. Fungsi Pegangan Data
Tekan ke Butang HOLD to freeze the current reading on the display. The "HOLD" indicator will appear. Press the Butang HOLD again to release the reading and resume live measurement.
6.4. Minimum/Maximum (MIN/MAX) Function
Tekan ke Butang MIN / MAX to cycle through the minimum, maximum, and current readings recorded since the function was activated.
- First press: Displays the maximum reading ("MAX" indicator).
- Second press: Displays the minimum reading ("MIN" indicator).
- Third press: Returns to current reading (MIN/MAX indicators disappear).
To clear the MIN/MAX memory, press and hold the Butang MIN / MAX until the indicators disappear.
6.5. Pengaktifan Lampu Latar
Tekan sebentar Butang Lampu Latar (red button with light bulb icon) to turn the display backlight on or off.
6.6. User Adjustable Parameter
The R8140 allows for user-adjustable parameters to calibrate for specialized light sources. Refer to the detailed instructions in the full product manual (if available from the manufacturer's website) for advanced calibration procedures using the Butang SET.
7. Penyelenggaraan
7.1. Pembersihan
Wipe the meter body with a soft, dry cloth. Do not use abrasive cleaners or solvents. Keep the light sensor clean and free from dust or smudges, as this can affect measurement accuracy. Use a soft, lint-free cloth to gently clean the sensor dome.
7.2. Penggantian Bateri
When the low battery indicator appears on the display, replace the two (2) AA batteries as described in the "Battery Installation" section (5.1).
7.3. Penyimpanan
When not in use, store the R8140 in a cool, dry place, preferably in its protective carrying case. Remove batteries if storing for extended periods to prevent leakage. Ensure the protective cap is placed over the light sensor.
8. Penyelesaian masalah
| Masalah | Kemungkinan Punca | Penyelesaian |
|---|---|---|
| Meter tidak dihidupkan. | Bateri mati atau tidak dipasang dengan betul. | Periksa kekutuban bateri dan gantikan bateri jika perlu. |
| Bacaan yang tidak tepat atau turun naik. | Dirty sensor; sensor cap still on; external light interference. | Clean the sensor. Remove the sensor cap. Ensure no direct light source is interfering with the sensor. |
| Paparan menunjukkan "OL" (Lebihan). | Light intensity exceeds the meter's maximum range. | Move the meter to an area with lower light intensity or ensure the correct range is selected (if not in auto-ranging). |
| Auto shut-off occurs too quickly. | Standard auto shut-off feature. | This is a power-saving feature. Refer to the full manual for information on disabling or adjusting auto shut-off if possible. |
9. Spesifikasi
| Parameter | Nilai |
|---|---|
| Nombor Model | R8140 |
| Julat Pengukuran | Up to 199,900 Lux (19,990 Fc) |
| Light Sources Measured | White, Red, Green, Yellow, Blue LEDs, Standard Incandescent |
| Paparan | Large, Backlit LCD |
| Sensor | Detachable and Rotatable |
| Fungsi | Auto-ranging, Min/Max, Data Hold, Backlight, User Adjustable Parameter |
| Bekalan Kuasa | 2 x Bateri AA (termasuk) |
| Dimensi | 6.7 x 2.5 x 1.5 inci (170 x 63.5 x 38 mm) |
| Berat badan | 7.41 auns (210 g) |
10. Waranti dan Sokongan
10.1. Maklumat Waranti
REED Instruments products are designed for reliability and performance. For specific warranty terms and conditions applicable to your R8140 LED Light Meter, please refer to the warranty card included with your product or visit the official REED Instruments webtapak. Simpan bukti pembelian anda untuk tuntutan waranti.
10.2. Sokongan Teknikal
Should you encounter any issues or require technical assistance with your REED R8140 LED Light Meter, please contact REED Instruments customer support. Contact details can typically be found on the manufacturer's webtapak atau dalam pembungkusan produk.