Extech LT40 LED Light Meter User Manual

1. Ifihan

The Extech LT40 is a compact and accurate LED Light Meter designed for measuring light levels from white LED light sources, as well as standard light sources. This device is essential for professionals needing to monitor and optimize environmental light levels in various settings such as offices, warehouses, public lots, hallways, and stairways. It provides measurements in both Lux and Foot-Candle (FC) units.

Figure 1: Extech LT40 LED Light Meter

2. Alaye Aabo

Please read all safety information before operating the Extech LT40 LED Light Meter. Failure to follow these instructions may result in damage to the device or personal injury.

• Má ṣe fi mita náà hàn sí àwọn iwọn otutu tó le koko tàbí ọriniinitutu tó ga.
• Avoid dropping the meter or subjecting it to severe impact.
• Keep the sensor clean and free from obstructions to ensure accurate readings.
• Do not attempt to open the meter casing; kò sí àwọn ẹ̀yà ara tí a lè lò nínú rẹ̀.
• Sọ awọn batiri sọnu ni ibamu si awọn ilana agbegbe.

3. Ọja Ipariview

3.1 Key Awọn ẹya ara ẹrọ

• USB interface for easy setup and data download.
• Data yiyan sampling rates from 1 second to 24 hours.
• LCD displays current readings, min/max, and alarm status.
• Includes Windows 2000, XP, and Vista compatible analysis software.
• Measures white LED and standard lighting in Lux or Foot-Candle (FC) units.
• Features cosine and color corrected sensor for accurate measurements.

3.2 irinše

The Extech LT40 LED Light Meter consists of the following main components:

• Sensọ Imọlẹ: Located at the top of the meter, responsible for detecting light.
• Ifihan LCD: Shows measurement readings, units, and status indicators.
• Awọn bọtini Iṣakoso:
  • Bọtini agbara: Turns the meter on/off.
  • Bọtini LUX/FC: Toggles between Lux and Foot-Candle units.
  • CAL/ZERO Button: Used for calibration and zeroing the sensor.
  • Bọtini Max/MIN: Displays maximum and minimum recorded readings.
  • Bọtini Dimu: Didi kika lọwọlọwọ lori ifihan.
• Abala Batiri: Be lori pada ti awọn kuro.
• Ibudo USB: Fun asopọ si kọmputa kan fun gbigbe data.

4. Eto

4.1 Fifi sori batiri

1. Locate the battery compartment on the back of the LT40 meter.
2. Gbe ideri batiri naa ṣii.
3. Insert two (2) AAA batteries, ensuring correct polarity (+/-). The batteries are included with the meter.
4. Pa ideri batiri naa ni aabo.

4.2 Software fifi sori

The LT40 includes analysis software compatible with Windows 2000, XP, and Vista. Refer to the software's installation guide for detailed instructions on installing and configuring the software for data download and analysis.

5. Awọn ilana Iṣiṣẹ

5.1 Gbigba Idiwon

1. Tẹ awọn Agbara bọtini lati tan-an mita.
2. Select the desired unit (Lux or FC) by pressing the LUX/FC bọtini.
3. Place the light sensor in the area where you wish to measure the light level. Ensure the sensor is facing the light source directly for accurate readings.
4. Read the light level displayed on the LCD.

Figure 2: Measuring light levels with the Extech LT40

5.2 Zeroing the Meter

To ensure accuracy, it is recommended to zero the meter before taking measurements, especially in low light conditions.

1. Place the protective cap over the light sensor to block all light.
2. Tẹ awọn CAL/ZERO button. The display should show '0' or a very low value.
3. Remove the cap to begin measurements.

5.3 Using MAX/MIN and HOLD Functions

• O pọju/MIN: Tẹ awọn MAX/MIN button to cycle through the maximum, minimum, and current readings. This is useful for monitoring light level fluctuations over time.
• MU: 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.

5.4 Data Wọle ati Gbigbe

The LT40 supports data logging with selectable sampling rates. Connect the meter to a computer using the USB interface and utilize the included software to configure logging parameters, download recorded data, and perform analysis.

6. Itọju

Proper maintenance ensures the longevity and accuracy of your Extech LT40 LED Light Meter.

• Ninu: Wipe the meter clean with a dry, soft cloth. Do not use abrasive cleaners or solvents. Ensure the light sensor is free of dust and debris.
• Ibi ipamọ: When not in use for extended periods, remove the batteries to prevent leakage. Store the meter in a cool, dry place, away from direct sunlight and extreme temperatures.
• Iṣatunṣe: While the meter is designed for high accuracy, periodic professional calibration may be required depending on your application and industry standards. Refer to Extech's official support for calibration services.

7. Laasigbotitusita

8. Awọn pato

9. Atilẹyin ọja ati Support

Extech Instruments is a trusted brand by professionals, sold in over 100 countries for over 45 years.

• Olupese: Extech
• Atilẹyin ọja: Tọkasi si awọn olupese ká osise website or the documentation included with your product for specific warranty details and terms.
• Ilana olumulo (PDF): For a downloadable PDF version of the user manual, please visit the official Extech website or access it via this link: Extech LT40 User Manual PDF.
• Atilẹyin Ayelujara: For additional support, FAQs, and product information, visit the official Extech store: Ile itaja Extech lori Amazon.