1. Вовед
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. Информации за безбедност
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.
- Do not expose the meter to extreme temperatures or high humidity.
- 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; внатре нема делови што може да ги сервисира корисникот.
- Фрлете ги батериите според локалните прописи.
3. Производот завршиview
3.1 Клучни карактеристики
- USB interface for easy setup and data download.
- Податоци за избор 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 Компоненти
The Extech LT40 LED Light Meter consists of the following main components:
- Сензор за светлина: Located at the top of the meter, responsible for detecting light.
- LCD дисплеј: Ги прикажува отчитувањата на мерењата, единиците и индикаторите за статус.
- Контролни копчиња:
- Копче за вклучување: Turns the meter on/off.
- Копче LUX/FC: Toggles between Lux and Foot-Candle units.
- CAL/ZERO Button: Used for calibration and zeroing the sensor.
- Копче MAX/MIN: Displays maximum and minimum recorded readings.
- Копче HOLD: Го замрзнува тековното отчитување на екранот.
- Оддел за батерии: Се наоѓа на задната страна на единицата.
- USB порта: За поврзување со компјутер за пренос на податоци.
4. Поставување
4.1 Инсталација на батерија
- Locate the battery compartment on the back of the LT40 meter.
- Отворете го капакот на батеријата.
- Insert two (2) AAA batteries, ensuring correct polarity (+/-). The batteries are included with the meter.
- Добро затворете го капакот на батеријата.
4.2 Инсталација на софтвер
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. Упатства за работа
5.1 Преземање на мерење
- Притиснете го Моќ копче за вклучување на мерачот.
- Select the desired unit (Lux or FC) by pressing the ЛУКС/ФК копче.
- 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.
- 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.
- Place the protective cap over the light sensor to block all light.
- Притиснете го CAL/ZERO button. The display should show '0' or a very low value.
- Remove the cap to begin measurements.
5.3 Using MAX/MIN and HOLD Functions
- MAX/MIN: Притиснете го MAX/MIN button to cycle through the maximum, minimum, and current readings. This is useful for monitoring light level fluctuations over time.
- ДРOLDАЈ: Притиснете го ДРЖИ копче за замрзнување на тековното отчитување на екранот. Притиснете го повторно за да го ослободите задржувањето и да продолжите со мерењата во живо.
5.4 Data Logging and Transfer
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.
Видео: Надview of Extech LED Light Meters, including the LT40, demonstrating measurement capabilities and features like Lux/FC units and cosine/color corrected measurements.
6. Одржување
Proper maintenance ensures the longevity and accuracy of your Extech LT40 LED Light Meter.
- Чистење: 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.
- Складирање: 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.
- Калибрација: 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 Смена на проблеми
| Проблем | Можна причина | Решение |
|---|---|---|
| Мерачот не се вклучува. | Мртви или неправилно инсталирани батерии. | Проверете го поларитетот на батериите. Заменете ги батериите со нови AAA батерии. |
| Неточни читања. | Dirty sensor, incorrect zeroing, or sensor obstruction. | Clean the sensor. Perform a zero calibration. Ensure nothing is blocking the sensor. |
| На екранот се прикажува „OL“ (Преоптоварување). | Light intensity exceeds the meter's measurement range. | Move the meter to an area with lower light intensity or use a different meter if the light source is too strong. |
| Не може да се поврзе со компјутер преку USB. | Driver issues, incorrect cable, or software problem. | Ensure USB cable is properly connected. Reinstall the analysis software and drivers. Check PC's device manager. |
8. Спецификации
| Спецификација | Детал |
|---|---|
| Бренд | Extech |
| Број на модел | LT40 |
| Димензии на производот | 5.3 x 1.9 x 0.2 инчи |
| Тежина на ставката | 4.94 унци |
| Батерии | 2 AAA батерии (вклучени) |
| Тип на дисплеј | Дигитален ЛЦД |
| Технологија за поврзување | USB |
| Специјална карактеристика | Висока прецизност |
| Вклучени компоненти | Extech LT40 LED Light Meter |
| Земја на потекло | Тајван |
| Материјал | Пластика |
| Спецификација исполнет | CE |
9. Гаранција и поддршка
Extech Instruments is a trusted brand by professionals, sold in over 100 countries for over 45 years.
- Производител: Extech
- Гаранција: Погледнете го официјалниот претставник на производителот website or the documentation included with your product for specific warranty details and terms.
- Упатство за користење (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.
- Поддршка преку Интернет: For additional support, FAQs, and product information, visit the official Extech store: Продавница Extech на Amazon.
