CEM DT-1308 Handheld Digital Light Meter User Manual

1. Utangulizi

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. Taarifa za Usalama

Please read this manual thoroughly before operating the device to ensure safe and proper use. Keep this manual for future reference.

• Usiweke kifaa kwenye joto kali, unyevunyevu au jua moja kwa moja.
• Epuka kuangusha kifaa au kukiathiri vibaya.
• Do not attempt to open or modify the device; this will void the warranty and may cause damage.
• Ondoa betri ikiwa kifaa hakitatumika kwa muda mrefu ili kuzuia kuvuja.
• Tupa betri na kifaa kulingana na kanuni za ndani.

3. Yaliyomo kwenye Kifurushi

Thibitisha kwamba vitu vyote vipo na viko katika hali nzuri wakati wa kufungua:

• CEM DT-1308 Digital Light Meter
• Protective Sensor Cover
• Heavy Duty Pouch
• Mwongozo wa Mtumiaji
• Betri (ikiwa imejumuishwa)

Figure 3.1: The CEM DT-1308 light meter shown with its packaging and included protective pouch.

4. Vipengele

• 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).
• Usahihi wa juu na majibu ya haraka.
• 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.
• Kiashiria cha chini cha betri.
• Long life silicon photo diode sensor.
• Over-range indication.

5. Mpangilio wa Kifaa

Familiarize yourself with the components of your DT-1308 light meter:

Kielelezo cha 5.1: Nyuma view of the DT-1308, highlighting the battery compartment and the coiled cable connecting to the light sensor.

1. Sensor ya Mwanga: Detachable sensor with a protective cover, connected via a coiled cable. This is the component that detects light.
2. Onyesho la LCD: Shows measurement readings, units, and various indicators.
3. Vifungo vya Utendaji:
   • Kitufe cha NGUVU: Huwasha/Kuzima kifaa.
   • RANGE kitufe: Manually selects measurement range.
   • Kitufe cha UNIT: Toggles between Lux and Foot-Candle units.
   • Kitufe cha HILI: Hugandisha usomaji wa sasa kwenye onyesho.
   • Kitufe cha PEAK: Captures and displays the maximum light intensity.
   • REL (Relative) button: Sets the current reading as a reference for subsequent measurements.
4. Sehemu ya Betri: Located on the rear of the device, holds the required batteries.

6. Kuweka

6.1 Ufungaji wa Betri

1. Locate the battery compartment cover on the back of the device (refer to Figure 5.1).
2. Slide or unscrew the cover to open the compartment.
3. Insert the required AA batteries, ensuring correct polarity (+/-).
4. Badilisha kifuniko cha sehemu ya betri kwa usalama.

6.2 Umewasha Awali

1. Bonyeza kwa NGUVU button to turn on the light meter.
2. The LCD display will illuminate and show a brief self-test before displaying a reading.
3. Ensure the protective cover is removed from the light sensor before taking measurements.

7. Maagizo ya Uendeshaji

7.1 Kuchukua Kipimo

1. Washa kifaa kwa kutumia NGUVU kitufe.
2. Ondoa kifuniko cha kinga kutoka kwa kitambuzi cha mwanga.
3. Position the light sensor at the desired measurement point, ensuring it faces the light source directly.
4. Read the illuminance value on the LCD display. The measurement rate is approximately 1.5 times per second.

7.2 Unit Selection (Lux/FC)

Bonyeza kwa KITENGO button to toggle between Lux (lx) and Foot-Candle (FC) measurement units. The selected unit will be indicated on the display.

7.3 Kazi ya Kushikilia Data

Bonyeza kwa SHIKA kitufe cha kugandisha usomaji wa sasa kwenye onyesho. Kibonyeze tena ili kuachilia kishikizo na kuendelea na vipimo vya moja kwa moja.

7.4 Peak Hold Function

Bonyeza kwa KILELE 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 Hali ya Uhusiano

Bonyeza kwa 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 Uchaguzi wa Masafa

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 kitufe.

7.7 Umeme Umeme Umezimwa

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 NGUVU kitufe ili kuiwasha tena.

8. Matengenezo

8.1 Kusafisha

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 Hifadhi

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 Ubadilishaji wa Betri

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. Utatuzi wa shida

10. Vipimo

• Onyesha: 4000 counts LCD with 41-segment analog bargraph
• Masafa ya Kipimo: Up to 400,000 Lux (or equivalent FC)
• Vitengo: Lux (lx) / Foot-Candle (FC) selectable
• Kihisi: Long life silicon photo diode
• Kiwango cha Upimaji: 1.5 times per second (nominal)
• Kazi: Data Hold, Peak Hold, Relative Mode, Auto Power Off, Over-range indication, Low battery indication
• Ugavi wa Nguvu: 1 x betri ya AA
• Halijoto ya Uendeshaji: 0°C hadi 50°C (32°F hadi 122°F)
• Halijoto ya Uhifadhi: -20°C hadi 60°C (-4°F hadi 140°F)
• Vipimo: (Refer to product images for approximate size)
• Uzito: (Lightweight, specific value not provided)

11. Udhamini na Msaada

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 webtovuti.

For technical support, service, or inquiries, please contact your local distributor or CEM customer service. Contact information can typically be found on the CEM webtovuti au kwenye ufungaji wa bidhaa.