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

1. Uvod

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. Ključne karakteristike

• visoka preciznost: 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).
• Brzi odgovor: Features a rapid sampling rate of 2-3 times per second, allowing for instant light measurements.
• Široki raspon mjerenja: Capable of measuring luminance from 0.01 to 300,000 Lux (0.01 to 30,000 Foot Candles) with a resolution of 0.01.
• Jednostavan za korištenje: Equipped with a 270° rotatable light sensor, eliminating the need to reposition the entire meter for different measurement angles.
• Snimanje podataka: Allows storage of up to 33 sets of readings for later review i analize.
• Temperature Testing: Includes functionality for temperature measurement.
• Relative Measuring Mode: Displays the difference between current and recorded data, useful for comparative analysis.

Slika 1: Gotovoview of BTMETER BT-881E features.

3. Šta se nalazi u kutiji

• 1 x BTMETER Lux Meter (BT-881E)
• 1 x Uputstvo za upotrebu

4. Podešavanje

4.1 Instalacija baterije

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

1. Pronađite odeljak za baterije na poleđini uređaja.
2. Koristite mali odvijač s križnim nastavkom da biste otvorili poklopac baterije.
3. Umetnite potrebne baterije, pazeći na ispravan polaritet.
4. Čvrsto zatvorite poklopac baterije i pritegnite vijak.

5. Uputstvo za upotrebu

Familiarize yourself with the buttons and display for effective operation.

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

5.1 Uključivanje/isključivanje napajanja

Pritisnite Snaga dugme () da biste uključili ili isključili uređaj.

5.2 Unit Selection (Lux/FC)

Pritisnite Lux/Fc button to switch between Lux and Foot Candle measurement units.

5.3 Pozadinsko osvjetljenje

Pritisnite LIGHT button to toggle the display backlight on or off for visibility in different lighting conditions.

5.4 Zadržavanje podataka

Pritisnite HOLD dugme za zamrzavanje trenutnog očitavanja na ekranu. Pritisnite ponovo za otpuštanje.

5.5 Mjerenje maksimuma/min.

Pritisnite MAX/MIN 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

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

6. Načini mjerenja

The BT-881E supports three primary measurement modes:

• Min. način rada: Displays the lowest light intensity recorded since the mode was activated.
• Max način rada: Displays the highest light intensity recorded since the mode was activated.
• Relativni način rada: Shows the difference between the current light reading and a set reference point.

Figure 3: Illustration of the three measurement modes.

7. Snimanje podataka

The meter can record up to 33 sets of data. To record a reading, press the REC button. To recall recorded data, press the REC 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. Preciznost

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
• rezolucija: 0.01 Lux / FC

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

9. Specifikacije

Slika 6: Dimenzije proizvoda.

10. Otkrivanje problema

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

• No Display/Power Issues: Provjerite jesu li baterije ispravno postavljene i uvjerite se da nisu ispražnjene. Zamijenite ih ako je potrebno.
• Netačna očitavanja: 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.
• Ekran ne reaguje: 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. Održavanje

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

• čišćenje: Gently wipe the device, especially the light sensor, with a soft, dry cloth. Do not use abrasive cleaners or solvents.
• Skladištenje: 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.
• Zaštita senzora: Always keep the sensor cap on when the device is not in use to protect the photometric sensor from dust and damage.

12. Garancija i podrška

For information regarding product warranty, technical support, or service, please refer to the official BTMETER webweb-mjesto ili kontaktirajte njihovu službu za korisnike. Sačuvajte račun kao dokaz o kupovini za reklamacije u slučaju garancije.