Pukapuka Kaiwhakamahi mō te Mita Rama LED Extech LT40

1. Kupu Whakataki

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. Nga korero haumaru

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; kaore he waahanga e taea ana e te kaiwhakamahi ki roto.
• Whakakorehia nga pākahiko kia rite ki nga ture o te rohe.

3. Hua Neke Atuview

3.1 Nga waahanga matua

• USB interface for easy setup and data download.
• Raraunga ka taea te whiriwhiri 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 Waehanga

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

• Pūoko Maama: Located at the top of the meter, responsible for detecting light.
• Whakaaturanga LCD: E whakaatu ana i ngā pānui ine, ngā waeine, me ngā tohu tūnga.
• Patene Mana:
  • Pātene Hiko: Turns the meter on/off.
  • Patene LUX/FC: Toggles between Lux and Foot-Candle units.
  • CAL/ZERO Button: Used for calibration and zeroing the sensor.
  • Pātene MAX/MIN: Displays maximum and minimum recorded readings.
  • Pātene HOLD: Ka whakatio i te panui o naianei kei te whakaaturanga.
• Wāhanga Pūhiko: Kei te tuara o te waeine.
• Tauranga USB: For connecting to a computer for data transfer.

4. Tatūnga

4.1 Tāuta Pūhiko

1. Locate the battery compartment on the back of the LT40 meter.
2. Kiriata te uhi pākahiko kia tuwhera.
3. Insert two (2) AAA batteries, ensuring correct polarity (+/-). The batteries are included with the meter.
4. Katia kia mau te taupoki pākahiko.

4.2 Tāuta Pūmanawa

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. Nga Tohutohu Whakahaere

5.1 Te Whanganga

1. Pehia te Mana pātene hei whakakā i te mita.
2. Select the desired unit (Lux or FC) by pressing the LUX/FC pātene.
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. Pehia te 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: Pehia te MAX/MIN button to cycle through the maximum, minimum, and current readings. This is useful for monitoring light level fluctuations over time.
• Tohu: Pehia te KAUPAPA hei whakatio i te pānui o nāianei kei te whakaaturanga. Pēhia anō hei tuku i te pātene pupuri me te tīmata anō i ngā inenga ora.

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.

6. Tiaki

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

• Te horoi: 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.
• Rokiroki: 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.
• Whakatikatika: 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. Te Raru

8. Whakatakotoranga

9. Pūtāhui me te Tautoko

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

• Kaihanga: Extech
• Pūtāhui: Tirohia te mana o te kaihanga website or the documentation included with your product for specific warranty details and terms.
• Pukapuka Kaiwhakamahi (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.
• Tautoko Aipurangi: For additional support, FAQs, and product information, visit the official Extech store: Toa Extech i runga i a Amazon.