1. Ifihan
The CEM DT-1308 is a high-precision digital light meter designed for measuring illuminance in Lux (lx) or Foot-Candle (FC) units. It features a large 4-digit LCD display with a 41-segment analog bargraph, capable of measuring up to 400,000 Lux. This device is suitable for various applications including photography, environmental monitoring, and industrial settings. Its lightweight design and durable construction ensure reliable and accurate measurements.
2. Alaye Aabo
Please read this manual thoroughly before operating the device to ensure safe and proper use. Keep this manual for future reference.
- Ma ṣe fi ẹrọ naa han si awọn iwọn otutu to gaju, ọriniinitutu, tabi imọlẹ orun taara.
- Yago fun sisọ ẹrọ naa silẹ tabi fifisilẹ si awọn ipa to lagbara.
- Do not attempt to open or modify the device; this will void the warranty and may cause damage.
- Yọ awọn batiri kuro ti ẹrọ naa ko ba ni lo fun igba pipẹ lati ṣe idiwọ jijo.
- Sọ awọn batiri ati ẹrọ naa sọnu ni ibamu si awọn ilana agbegbe.
3. Package Awọn akoonu
Jẹrisi pe gbogbo awọn nkan wa ati ni ipo ti o dara nigbati ṣiṣi silẹ:
- CEM DT-1308 Digital Light Meter
- Protective Sensor Cover
- Heavy Duty Pouch
- Itọsọna olumulo
- Awọn batiri (ti o ba wa)

Figure 3.1: The CEM DT-1308 light meter shown with its packaging and included protective pouch.
4. Awọn ẹya ara ẹrọ
- Large 4000 counts LCD display with 41-segment analog bargraph.
- Measurement range up to 400,000 Lux.
- User selectable units: Lux (lx) or Foot-Candle (FC).
- Ga išedede ati ki o dekun esi.
- Peak Hold function to capture maximum readings.
- Relative mode for differential measurements.
- Data Hold function to freeze the displayed reading.
- Automatic Power Off to conserve battery life.
- Itọkasi batiri kekere.
- Long life silicon photo diode sensor.
- Over-range indication.
5. Device Ìfilélẹ
Familiarize yourself with the components of your DT-1308 light meter:

olusin 5.1: Ẹyìn view of the DT-1308, highlighting the battery compartment and the coiled cable connecting to the light sensor.
- Sensọ Imọlẹ: Detachable sensor with a protective cover, connected via a coiled cable. This is the component that detects light.
- Ifihan LCD: Shows measurement readings, units, and various indicators.
- Awọn bọtini iṣẹ:
- Bọtini AGBARA: Yi ẹrọ TAN/PA.
- Bọtini RANGE: Manually selects measurement range.
- Bọtini UNIT: Toggles between Lux and Foot-Candle units.
- Bọtini idaduro: Didi kika lọwọlọwọ lori ifihan.
- Bọ́tìnnì góńgó: Captures and displays the maximum light intensity.
- REL (Relative) button: Sets the current reading as a reference for subsequent measurements.
- Abala Batiri: Located on the rear of the device, holds the required batteries.
6. Eto
6.1 Fifi sori batiri
- Wa ideri iyẹwu batiri ni ẹhin ẹrọ naa (tọkasi Nọmba 5.1).
- Slide or unscrew the cover to open the compartment.
- Fi awọn batiri AA ti a beere sii, ki o rii daju pe polarity ti o tọ (+/-).
- Rọpo ideri iyẹwu batiri ni aabo.
6.2 Ibẹrẹ Agbara-On
- Tẹ awọn AGBARA button to turn on the light meter.
- The LCD display will illuminate and show a brief self-test before displaying a reading.
- Ensure the protective cover is removed from the light sensor before taking measurements.
7. Awọn ilana Iṣiṣẹ
7.1 Gbigba Idiwon
- Tan-an ẹrọ nipa lilo awọn AGBARA bọtini.
- Remove the protective cap from the light sensor.
- Position the light sensor at the desired measurement point, ensuring it faces the light source directly.
- Read the illuminance value on the LCD display. The measurement rate is approximately 1.5 times per second.
7.2 Unit Selection (Lux/FC)
Tẹ awọn UNIT button to toggle between Lux (lx) and Foot-Candle (FC) measurement units. The selected unit will be indicated on the display.
7.3 Data idaduro Išė
Tẹ awọn DIMU bọ́tìnì láti dì kíkà tó wà lórí ìbòjú náà. Tẹ̀ ẹ́ lẹ́ẹ̀kan síi láti tú ìdúró náà sílẹ̀ kí o sì tún bẹ̀rẹ̀ àwọn ìwọ̀n tó wà láàyè.
7.4 Iṣẹ́ Ìdádúró Òkè
Tẹ awọn TETE button to capture and display the maximum light intensity detected since the function was activated. This is useful for measuring transient light peaks. Press it again to exit Peak Hold mode.
7.5 Ipo ibatan
Tẹ awọn REL button to enter Relative mode. The current reading will be stored as a reference value, and subsequent measurements will be displayed as the difference from this reference. Press REL again to exit Relative mode.
7.6 Range Yiyan
The device typically operates in auto-ranging mode. However, you can manually select a measurement range by pressing the RANGE button. Cycle through available ranges as needed. To return to auto-ranging, press and hold the RANGE bọtini.
7.7 Agbara Aifọwọyi Pa
The DT-1308 features an automatic power-off function to conserve battery life. If no buttons are pressed for a certain period (typically 10-15 minutes), the device will automatically shut down. Press the AGBARA bọtini lati tan-an pada.
8. Itọju
8.1 Ninu
Wipe the device and sensor with a soft, dry cloth. Do not use abrasive cleaners or solvents, as they may damage the casing or sensor. Keep the light sensor clean and free from dust or smudges for accurate readings.
8.2 Ibi ipamọ
When not in use, store the light meter in its protective pouch in a cool, dry place, away from direct sunlight and extreme temperatures. Ensure the protective cap is on the light sensor.
8.3 Batiri Rirọpo
When the low battery indicator appears on the display, replace the batteries promptly to ensure continued accurate operation. Refer to section 6.1 for battery installation instructions.
9. Laasigbotitusita
| Isoro | Owun to le Fa | Ojutu |
|---|---|---|
| Ẹrọ naa ko ṣiṣẹ. | Awọn batiri ti o ku tabi ti ko tọ ti fi sori ẹrọ. | Ṣayẹwo polarity batiri ki o rọpo awọn batiri ti o ba jẹ dandan. |
| Display shows "OL" or "OVER". | Measurement exceeds the current range. | Switch to a higher measurement range using the RANGE button, or move to a less intense light source. |
| Awọn kika ti ko pe. | Dirty sensor, sensor cover still on, or low battery. | Clean the sensor, remove the protective cover, or replace batteries. Ensure the sensor is positioned correctly. |
| Ifihan ti ṣofo tabi yiyi. | Batiri kekere tabi aṣiṣe inu. | Rọpo awọn batiri. Ti iṣoro naa ba tẹsiwaju, kan si atilẹyin alabara. |
10. Awọn pato
- Ifihan: 4000 counts LCD with 41-segment analog bargraph
- Iwọn Iwọn: Up to 400,000 Lux (or equivalent FC)
- Awọn ẹya: Lux (lx) / Foot-Candle (FC) selectable
- Sensọ: Long life silicon photo diode
- Iwọn wiwọn: 1.5 times per second (nominal)
- Awọn iṣẹ: Data Hold, Peak Hold, Relative Mode, Auto Power Off, Over-range indication, Low battery indication
- Ibi ti ina elekitiriki ti nwa: 1 x AA batiri
- Iwọn Iṣiṣẹ: 0°C si 50°C (32°F si 122°F)
- Ibi ipamọ otutu: -20°C si 60°C (-4°F si 140°F)
- Awọn iwọn: (Refer to product images for approximate size)
- Ìwúwo: (Lightweight, specific value not provided)
11. Atilẹyin ọja ati Support
CEM products are designed for reliability and performance. This product is covered by a standard manufacturer's warranty against defects in materials and workmanship. For specific warranty terms, please refer to the warranty card included with your product or visit the official CEM webojula.
For technical support, service, or inquiries, please contact your local distributor or CEM customer service. Contact information can typically be found on the CEM webaaye tabi lori apoti ọja.