Walfront MT-912 Portable Light Meter User Manual

1. Sikkerhedsoplysninger

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

• Udsæt ikke enheden for ekstreme temperaturer, fugt eller direkte sollys.
• Avoid strong vibrations or impacts to prevent damage to the sensitive sensor.
• Forsøg ikke at skille enheden ad eller ændre den. Overlad al service til kvalificeret personale.
• Fjern batterierne, hvis enheden ikke skal bruges i længere tid, for at forhindre batterilækage.
• Bortskaf batterier og enheden i henhold til lokale regler.

2. Produktet er slutview

The Walfront MT-912 is a portable digital light meter designed for accurate measurement of illumination (Lux/Foot-candles) and temperature. It features a color LCD display with backlight, data hold, and MAX/MIN functions.

Figur 2.1: Forside view of the MT-912 Light Meter, showing the LCD display, control buttons, and light sensor.

2.1 Komponenter

Figure 2.2: Labeled diagram of the MT-912 Light Meter's components.

1. Vane Sensor: Detects ambient light. Ensure it is clean and unobstructed for accurate readings.
2. LCD-skærm: Shows measurement readings (Lux/FC, Temperature), battery status, and function indicators.
3. HOLD-tast: Fryser den aktuelle aflæsning på displayet.
4. Tænd/sluk-tast: Tænder eller slukker for enheden.
5. MIN/MAX Key: Toggles between minimum, maximum, and current readings.
6. FC/Lux Key: Switches the illumination unit between Foot-candles (FC) and Lux (Lx).
7. Navneskilt: Indeholder produktidentifikationsoplysninger.
8. Batterirum: Indeholder AAA-batterierne.

3. Opsætning

3.1 Batteriinstallation

The MT-912 Light Meter requires three (3) 1.5V AAA batteries (not included).

1. Find batterirummet på bagsiden af ​​enheden.
2. Gently slide the battery compartment cover downwards to open it.
3. Isæt tre AAA-batterier, og sørg for at polerne (+/-) vender korrekt som angivet i batterirummet.
4. Sæt dækslet til batterirummet på igen, og skub det opad, indtil det klikker på plads.

Figur 3.1: Tilbage view of the MT-912, highlighting the battery compartment.

4. Betjeningsvejledning

4.1 Tænd/sluk

• For at tænde enheden skal du trykke på Tænd/sluk nøgle (). The LCD display will illuminate.
• For at slukke enheden skal du trykke på og holde nede Tænd/sluk tast i cirka 2 sekunder.

4.2 Taking Light Measurements

Ensure the vane sensor cap is removed before taking measurements.

Figure 4.1: The MT-912 with the sensor cap removed, ready to measure light.

1. Tænd for enheden.
2. Point the vane sensor towards the light source or the area where you want to measure illumination.
3. The current illumination reading will be displayed on the LCD in Lux (Lx) or Foot-candles (FC).
4. Tryk på FC/Lux key to switch between Lux and Foot-candle units.

4.3 Temperaturmåling

The device simultaneously measures and displays the ambient temperature along with the illumination reading. The temperature unit is Celsius (℃).

4.4 Dataholdefunktion

• For at fryse den aktuelle aflæsning på displayet skal du trykke på HOLDE key. The "HOLD" indicator will appear on the screen.
• To release the hold and resume live measurement, press the HOLDE nøglen igen.

4.5 MAX/MIN-funktion

• Tryk på MIN / MAX key once to display the maximum recorded illumination value. The "MAX" indicator will appear.
• Tryk på MIN / MAX key again to display the minimum recorded illumination value. The "MIN" indicator will appear.
• Tryk på MIN / MAX key a third time to return to live measurement.

4.6 Baggrundslys

The LCD display features a backlight for improved visibility in low-light conditions. The backlight automatically activates when the device is turned on and may have an auto-off feature to conserve battery life.

4.7 Overområdeindikation

If the measured illumination exceeds the device's maximum range, the display will show an over-range indicator (e.g., "OL" or similar). Move to an area with lower light intensity or ensure the sensor is not directly exposed to extremely bright sources beyond its capacity.

4.8 Laveffektindikation

Når batteriet voltage is low, a battery icon will appear on the LCD display, indicating that the batteries need to be replaced soon.

5. Vedligeholdelse

5.1 Rengøring

• Tør enheden c afasinmed en blød, tør klud.
• For genstridigt snavs, brug en let damp en klud med et mildt rengøringsmiddel, og tør derefter af.
• Do not use abrasive cleaners, solvents, or alcohol, as these can damage the plastic and display.
• Keep the vane sensor clean and free of dust or smudges to ensure accurate readings. Use a soft brush or lint-free cloth.

5.2 Udskiftning af batteri

Refer to Section 3.1 Battery Installation for instructions on replacing the AAA batteries when the low power indicator appears.

5.3 Opbevaring

• Når enheden ikke er i brug, skal den opbevares køligt og tørt, væk fra direkte sollys og ekstreme temperaturer.
• Always replace the protective cap on the vane sensor before storage.
• Remove batteries if storing the device for an extended period (e.g., more than one month) to prevent battery leakage and damage.

6. Fejlfinding

7. Specifikationer

8. Garanti og support

8.1 Garantioplysninger

Specific warranty details for this product may vary by region and retailer. Please refer to the warranty card included with your purchase or contact your point of sale for detailed warranty terms and conditions.

8.2 Kundesupport

For technical assistance, troubleshooting not covered in this manual, or inquiries regarding your product, please contact the seller or manufacturer directly. Refer to your purchase documentation for contact information.