1. Introduzzjoni
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. Informazzjoni dwar is-Sigurtà
Please read this manual thoroughly before operating the device to ensure safe and proper use. Keep this manual for future reference.
- Tesponix l-apparat għal temperaturi estremi, umdità, jew dawl tax-xemx dirett.
- Evita li twaqqa 'l-apparat jew suġġett għal impatti qawwija.
- Do not attempt to open or modify the device; this will void the warranty and may cause damage.
- Neħħi l-batteriji jekk l-apparat ma jkunx se jintuża għal perjodu estiż biex tevita t-tnixxija.
- Armi l-batteriji u l-apparat skont ir-regolamenti lokali.
3. Kontenut tal-Pakkett
Ivverifika li l-oġġetti kollha huma preżenti u f'kundizzjoni tajba meta tiftaħ il-pakkett:
- CEM DT-1308 Digital Light Meter
- Protective Sensor Cover
- Heavy Duty Pouch
- Manwal għall-Utent
- Batteriji (jekk inklużi)

Figure 3.1: The CEM DT-1308 light meter shown with its packaging and included protective pouch.
4. Karatteristiċi
- 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).
- Preċiżjoni għolja u rispons rapidu.
- 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.
- Indikazzjoni ta 'batterija baxxa.
- Long life silicon photo diode sensor.
- Over-range indication.
5. Layout tal-Apparat
Familiarize yourself with the components of your DT-1308 light meter:

Figura 5.1: Wara view of the DT-1308, highlighting the battery compartment and the coiled cable connecting to the light sensor.
- Sensor tad-Dawl: Detachable sensor with a protective cover, connected via a coiled cable. This is the component that detects light.
- Display LCD: Juri qari tal-kejl, unitajiet, u diversi indikaturi.
- Buttuni tal-Funzjoni:
- Buttuna POWER: Jixgħel/Jitfi l-apparat.
- Buttuna firxa: Manually selects measurement range.
- Buttuna UNIT: Toggles between Lux and Foot-Candle units.
- buttuna ŻOMM: Jiffriża l-qari attwali fuq id-displej.
- Buttuna PEAK: Captures and displays the maximum light intensity.
- REL (Relative) button: Sets the current reading as a reference for subsequent measurements.
- Kompartiment tal-batterija: Located on the rear of the device, holds the required batteries.
6. Setup
6.1 Installazzjoni tal-batterija
- Locate the battery compartment cover on the back of the device (refer to Figure 5.1).
- Slide or unscrew the cover to open the compartment.
- Daħħal il-batteriji AA meħtieġa, waqt li tiżgura l-polarità korretta (+/-).
- Ibdel l-għatu tal-kompartiment tal-batterija b'mod sikur.
6.2 Tixgħel Inizjali
- Agħfas il- QAWWA 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. Istruzzjonijiet Operattivi
7.1 Teħid ta 'Kejl
- Ixgħel l-apparat billi tuża l- QAWWA buttuna.
- 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)
Agħfas il- UNITÀ button to toggle between Lux (lx) and Foot-Candle (FC) measurement units. The selected unit will be indicated on the display.
7.3 Funzjoni ta' Żamma tad-Data
Agħfas il- ŻOMM button to freeze the current reading on the display. Press it again to release the hold and resume live measurements.
7.4 Peak Hold Function
Agħfas il- PEAK 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 Modalità Relattiva
Agħfas il- 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 Għażla tal-Medda
The device typically operates in auto-ranging mode. However, you can manually select a measurement range by pressing the GANJA button. Cycle through available ranges as needed. To return to auto-ranging, press and hold the GANJA buttuna.
7.7 Tifi Awtomatiku
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 QAWWA buttuna biex terġa 'tixgħel.
8. Manutenzjoni
8.1 Tindif
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 Ħażna
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 Sostituzzjoni tal-batterija
Meta l-indikatur ta' batterija baxxa jidher fuq id-displej, ibdel il-batteriji minnufih biex tiżgura tħaddim preċiż kontinwu. Irreferi għat-taqsima 6.1 għal struzzjonijiet dwar l-installazzjoni tal-batterija.
9 Issolvi l-problemi
| Problema | Kawża Possibbli | Soluzzjoni |
|---|---|---|
| L-apparat ma jixgħelx. | Batteriji mejta jew installati ħażin. | Iċċekkja l-polarità tal-batterija u ibdel il-batteriji jekk meħtieġ. |
| Display shows "OL" or "OVER". | Measurement exceeds the current range. | Switch to a higher measurement range using the GANJA button, or move to a less intense light source. |
| Qari mhux preċiż. | 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. |
| Id-displej huwa vojt jew jitteptep. | Batterija baxxa jew ħsara interna. | Ibdel il-batteriji. Jekk il-problema tippersisti, ikkuntattja l-appoġġ għall-klijenti. |
10. Speċifikazzjonijiet
- Wiri: 4000 counts LCD with 41-segment analog bargraph
- Medda ta' Kejl: Up to 400,000 Lux (or equivalent FC)
- Unitajiet: Lux (lx) / Foot-Candle (FC) selectable
- Sensor: Long life silicon photo diode
- Rata tal-Kejl: 1.5 times per second (nominal)
- Funzjonijiet: Data Hold, Peak Hold, Relative Mode, Auto Power Off, Over-range indication, Low battery indication
- Provvista tal-Enerġija: 1 x batterija AA
- Temperatura operattiva: 0°C sa 50°C (32°F sa 122°F)
- Temperatura tal-Ħażna: -20°C sa 60°C (-4°F sa 140°F)
- Dimensjonijiet: (Refer to product images for approximate size)
- Piż: (Lightweight, specific value not provided)
11. Garanzija u Appoġġ
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 websit.
For technical support, service, or inquiries, please contact your local distributor or CEM customer service. Contact information can typically be found on the CEM webis-sit jew fuq l-imballaġġ tal-prodott.