BTMETER BT-881E Digital Illuminance/Light Meter User Manual

1. Introduzione

The BTMETER BT-881E is a digital illuminance meter designed for precise measurement of light intensity. It provides accurate readings in both Lux and Foot Candles (FC) across a wide range, making it suitable for various applications including home, garden, aquarium, plant cultivation, schools, offices, and LED lighting assessments. Its user-friendly design features a rotatable sensor and data recording capabilities for enhanced convenience.

2. Caratteristiche principali

• Alta precisione: Provides reliable measurements with an accuracy of +/- 4% readings +/- 0.5% f.s (at 10,000 Lux; 1,000 FC) and +/- 5% readings +/- 10 digits (at 300,000 Lux; 30,000 FC).
• Risposta rapida: Features a rapid sampling rate of 2-3 times per second, allowing for instant light measurements.
• Ampia gamma di misurazioni: Capable of measuring luminance from 0.01 to 300,000 Lux (0.01 to 30,000 Foot Candles) with a resolution of 0.01.
• Facile da usare: Equipped with a 270° rotatable light sensor, eliminating the need to reposition the entire meter for different measurement angles.
• Registrazione dei dati: Allows storage of up to 33 sets of readings for later review e analisi.
• Temperature Testing: Includes functionality for temperature measurement.
• Relative Measuring Mode: Displays the difference between current and recorded data, useful for comparative analysis.

Figura 1: Oltreview of BTMETER BT-881E features.

3. Cosa c'è nella scatola

• 1 x BTMETER Lux Meter (BT-881E)
• 1 x Manuale utente

4. Impostazione

4.1 Installazione della batteria

The BT-881E requires batteries for operation. To install or replace batteries:

1. Individuare il vano batteria sul retro del dispositivo.
2. Use a small Phillips head screwdriver to open the battery cover.
3. Inserire le batterie richieste, garantendo la corretta polarità.
4. Chiudere bene il coperchio della batteria e stringere la vite.

5. Istruzioni per l'uso

Familiarize yourself with the buttons and display for effective operation.

Figure 2: BTMETER BT-881E display with backlight on and off.

5.1 Accensione/spegnimento

Premere il tasto Energia pulsante () per accendere o spegnere il dispositivo.

5.2 Selezione dell'unità (Lux/FC)

Premere il tasto Lux/Fc button to switch between Lux and Foot Candle measurement units.

5.3 Retroilluminazione

Premere il tasto LEGGERO button to toggle the display backlight on or off for visibility in different lighting conditions.

5.4 Conservazione dei dati

Premere il tasto PRESA pulsante per congelare la lettura corrente sul display. Premere di nuovo per rilasciare.

5.5 Max/Min Measurement

Premere il tasto Massimo/minimo button to cycle through maximum, minimum, and current readings. This allows you to track the highest and lowest light levels detected during a measurement session.

5.6 Relative Measurement

Premere il tasto REL button to enter relative measurement mode. This mode displays the difference between the current measurement and a previously recorded reference value.

6. Modalità di misurazione

The BT-881E supports three primary measurement modes:

• Min Mode: Displays the lowest light intensity recorded since the mode was activated.
• Modalità massima: Displays the highest light intensity recorded since the mode was activated.
• Modalità relativa: Shows the difference between the current light reading and a set reference point.

Figure 3: Illustration of the three measurement modes.

7. Registrazione dei dati

The meter can record up to 33 sets of data. To record a reading, press the RICORDA button. To recall recorded data, press the RICORDA button again and use the arrow keys (if available, or cycle through with repeated presses) to navigate through the stored values.

Figure 4: Data recording and hold functions.

8. Precisione

The BT-881E is equipped with a high-precision photometric sensor for accurate light measurement. It is calibrated to a standard incandescent lamp at a color temperature of 2556K.

• Accuracy (≤ 10,000 Lux; 1,000 FC): ±4% readings ±0.5% f.s
• Accuracy (> 10,000 Lux; 1,000 FC): ±5% readings ±10 digits
• Risoluzione: 0.01 Lux / FC

Figure 5: High-precision photometric sensor and accuracy details.

9. Specifiche

Figura 6: Dimensioni del prodotto.

10. Risoluzione Dei Problemi

If you encounter issues with your BTMETER BT-881E, consider the following common solutions:

• Nessun problema di visualizzazione/alimentazione: Controllare l'installazione delle batterie e assicurarsi che non siano scariche. Sostituirle se necessario.
• Letture imprecise: Ensure the sensor is clean and unobstructed. Verify that the correct measurement unit (Lux/FC) is selected. Avoid measuring in rapidly changing light conditions if stable readings are required.
• Il display non risponde: Try turning the device off and on again. If the issue persists, remove and reinsert the batteries.

For persistent problems, contact BTMETER customer support.

11. Manutenzione

To ensure the longevity and accuracy of your BTMETER BT-881E:

• Pulizia: Gently wipe the device, especially the light sensor, with a soft, dry cloth. Do not use abrasive cleaners or solvents.
• Magazzinaggio: Store the meter in its protective carrying case in a cool, dry place away from direct sunlight and extreme temperatures. Remove batteries if the device will not be used for an extended period to prevent leakage.
• Protezione del sensore: Always keep the sensor cap on when the device is not in use to protect the photometric sensor from dust and damage.

12. Garanzia e supporto

For information regarding product warranty, technical support, or service, please refer to the official BTMETER webo contattare il servizio clienti. Conservare la ricevuta d'acquisto come prova d'acquisto per eventuali reclami in garanzia.