Extech LT40 LED Light Meter User Manual

1. Introdução

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. Informações de segurança

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.

• Não exponha o medidor a temperaturas extremas ou alta umidade.
• Avoid dropping the meter or subjecting it to severe impact.
• Keep the sensor clean and free from obstructions to ensure accurate readings.
• Não tente abrir o medidor casing; não há peças internas que possam ser reparadas pelo usuário.
• Descarte as baterias de acordo com os regulamentos locais.

3. Produto acabadoview

3.1 Principais Características

• USB interface for easy setup and data download.
• Dados selecionáveisampling 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 Componentes

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

• Sensor de luz: Located at the top of the meter, responsible for detecting light.
• Tela LCD: Exibe leituras de medição, unidades e indicadores de status.
• Botões de controle:
  • Botão de energia: Liga/desliga o medidor.
  • Botão LUX/FC: Toggles between Lux and Foot-Candle units.
  • CAL/ZERO Button: Used for calibration and zeroing the sensor.
  • Botão MAX/MIN: Displays maximum and minimum recorded readings.
  • Pressionar botão: Congela a leitura atual no visor.
• Compartimento da bateria: Localizado na parte de trás da unidade.
• Porta USB: For connecting to a computer for data transfer.

4. Configuração

4.1 Instalação da bateria

1. Locate the battery compartment on the back of the LT40 meter.
2. Deslize a tampa da bateria aberta.
3. Insert two (2) AAA batteries, ensuring correct polarity (+/-). The batteries are included with the meter.
4. Feche a tampa da bateria com segurança.

4.2 Instalação de software

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. Instruções de operação

5.1 Fazendo uma medição

1. Pressione o Poder botão para ligar o medidor.
2. Selecione a unidade desejada (Lux ou FC) pressionando o botão. LUX/FC botão.
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. Pressione o 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

• MAX / MIN: Pressione o MÁX/MÍN button to cycle through the maximum, minimum, and current readings. This is useful for monitoring light level fluctuations over time.
• ESPERA: Pressione o SEGURAR Pressione o botão para congelar a leitura atual no visor. Pressione-o novamente para liberar o congelamento e retomar as medições em tempo real.

5.4 Registro e Transferência de Dados

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. Manutenção

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

• Limpeza: 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.
• Armazenar: Quando não estiver em uso por longos períodos, remova as pilhas para evitar vazamentos. Guarde o medidor em local fresco e seco, longe da luz solar direta e de temperaturas extremas.
• Calibração: 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. Solução De Problemas

8. Especificações

9. Garantia e Suporte

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

• Fabricante: Ex-tecnologia
• Garantia: Consulte o manual oficial do fabricante. website or the documentation included with your product for specific warranty details and terms.
• Manual do usuário (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.
• Suporte online: For additional support, FAQs, and product information, visit the official Extech store: Loja Extech na Amazon.