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

1. Rhagymadrodd

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. Nodweddion Allweddol

• Cywirdeb Uchel: 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).
• Ymateb Cyflym: Features a rapid sampling rate of 2-3 times per second, allowing for instant light measurements.
• Ystod Mesur Eang: Capable of measuring luminance from 0.01 to 300,000 Lux (0.01 to 30,000 Foot Candles) with a resolution of 0.01.
• Hawdd i'w Ddefnyddio: Equipped with a 270° rotatable light sensor, eliminating the need to reposition the entire meter for different measurement angles.
• Cofnodi Data: Allows storage of up to 33 sets of readings for later review a dadansoddi.
• Temperature Testing: Includes functionality for temperature measurement.
• Relative Measuring Mode: Displays the difference between current and recorded data, useful for comparative analysis.

Ffigur 1: Drosoddview of BTMETER BT-881E features.

3. Beth sydd yn y Bocs

• 1 x BTMETER Lux Meter (BT-881E)
• 1 x Llawlyfr Defnyddiwr

4. Gosod

4.1 Gosod Batri

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

1. Lleolwch y compartment batri ar gefn y ddyfais.
2. Defnyddiwch sgriwdreifer pen Phillips bach i agor clawr y batri.
3. Mewnosodwch y batris gofynnol, gan sicrhau polaredd cywir.
4. Caewch glawr y batri yn ddiogel a thynhau'r sgriw.

5. Cyfarwyddiadau Gweithredu

Familiarize yourself with the buttons and display for effective operation.

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

5.1 Pŵer Ymlaen/Diffodd

Gwasgwch y Grym botwm () i droi'r ddyfais ymlaen neu i ffwrdd.

5.2 Unit Selection (Lux/FC)

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

5.3 Golau cefn

Gwasgwch y GOLAU button to toggle the display backlight on or off for visibility in different lighting conditions.

5.4 Dal Data

Gwasgwch y DALWCH botwm i rewi'r darlleniad cyfredol ar yr arddangosfa. Pwyswch eto i'w ryddhau.

5.5 Max/Min Measurement

Gwasgwch y 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

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

6. Dulliau Mesur

The BT-881E supports three primary measurement modes:

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

Figure 3: Illustration of the three measurement modes.

7. Cofnodi Data

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. Cywirdeb

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
• Penderfyniad: 0.01 Lux / FC

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

9. manylebau

Ffigur 6: Dimensiynau'r cynnyrch.

10. Datrys Problemau

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

• Dim Problemau Arddangos/Pŵer: Gwiriwch osodiad y batri a gwnewch yn siŵr nad yw'r batris wedi'u disbyddu. Amnewidiwch os oes angen.
• Darlleniadau Anghywir: 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.
• Arddangosfa Ddim yn Ymateb: 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. cynnal

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

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

12. Gwarant a Chefnogaeth

For information regarding product warranty, technical support, or service, please refer to the official BTMETER websafle neu cysylltwch â'u hadran gwasanaeth cwsmeriaid. Cadwch eich derbynneb prynu fel prawf o brynu ar gyfer hawliadau gwarant.