1. Introduction
The Dr.meter LX1010BS is a digital illuminance meter designed for precise measurement of light intensity. It provides accurate readings in Lux across a wide range, making it suitable for various applications including photography, environmental monitoring, and workplace lighting assessment. This manual provides detailed instructions for the proper use and maintenance of your device.
2. Safety Information
- Do not expose the device to extreme temperatures, humidity, or direct sunlight.
- Avoid strong impacts or dropping the meter.
- Keep the photo detector clean and free from obstructions to ensure accurate readings.
- Do not attempt to disassemble or modify the device, as this will void the warranty and may cause damage.
- Remove the battery if the device will not be used for an extended period to prevent leakage.
3. Product Overview
3.1 Components
The LX1010BS Digital Illuminance Light Meter consists of a main display unit and a separate photo detector connected by a coiled cable. Key components are:
- LCD Display: Shows measurement readings, units, and other indicators.
- Photo Detector: Contains a silicon photo diode with a filter to measure light intensity.
- Range Select Buttons: Used to switch between different measurement ranges (e.g., 100,000 Lux, 20,000 Lux, 2,000 Lux).
- HOLD ON/OFF Button: Powers the device on/off and holds the current reading on the display.
Figure 1: LX1010BS Light Meter Components
3.2 Features
- 3-1/2 digit 18mm LCD display for clear readings.
- Measurement range: 0 to 100,000 Lux.
- High accuracy: ±(4%rdg+10digit) for ≤10,000Lux, ±(5%rdg+10digit) for >10,000Lux.
- Resolution: 1 Lux.
- Fast sampling rate: 0.5 seconds.
- Separate photo detector for flexible positioning.
- Data hold function.
- Powered by a 9V battery.
4. Setup
4.1 Battery Installation
- Locate the battery compartment cover on the back of the main display unit.
- Slide or unclip the cover to open the compartment.
- Insert a new 9V battery, ensuring correct polarity (+/-).
- Replace the battery compartment cover securely.
4.2 Initial Inspection
Before first use, inspect the device for any visible damage. Ensure the coiled cable connecting the photo detector to the main unit is securely attached and undamaged. Verify the photo detector's dome is clean.
5. Operating Instructions
5.1 Powering On/Off
- To power on the device, press the HOLD ON/OFF button. The LCD will illuminate and display a reading.
- To power off the device, press the HOLD ON/OFF button again.
5.2 Taking Measurements
- Turn on the meter.
- Select the appropriate measurement range using the RANGE SELECT buttons (100,000 Lux, 20,000 Lux, 2,000 Lux). Start with a higher range if the light intensity is unknown to avoid over-input.
- Position the photo detector at the location where you wish to measure light intensity. Ensure the white dome of the detector is facing the light source and is not obstructed.
- Read the Lux value displayed on the LCD screen. The unit will be indicated as "Lux" or "x100Lux" depending on the selected range.
Figure 2: Light Meter in Use
5.3 Data Hold Function
To freeze the current reading on the display, briefly press the HOLD ON/OFF button while the device is on. The "HOLD" indicator will appear on the LCD. Press the button again to release the hold and resume live measurements.
5.4 Range Selection
The meter has multiple ranges to accommodate different light levels. Use the range buttons to switch between them:
- 2000 Lux: For low light conditions.
- 20000 Lux: For moderate light conditions.
- 100000 Lux: For bright light conditions.
Always select a range that is appropriate for the light level being measured. If the reading exceeds the current range, the display may show "1" indicating an over-input condition. Switch to a higher range in such cases.
6. Maintenance
6.1 Cleaning
- Wipe the device casing with a soft, dry cloth. Do not use abrasive cleaners or solvents.
- Gently clean the photo detector's white dome with a soft, lint-free cloth to ensure accurate readings. Avoid scratching the surface.
6.2 Storage
When not in use, store the meter in a cool, dry place, away from direct sunlight and extreme temperatures. Remove the battery if storing for an extended period.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Display shows "1" or "OL" | Over-input; light intensity exceeds current range. | Switch to a higher measurement range. |
| No display or faint display | Low battery or incorrect battery installation. | Replace the 9V battery or check its polarity. |
| Inaccurate readings | Dirty photo detector or incorrect range selection. | Clean the photo detector. Ensure the correct range is selected for the ambient light. |
8. Specifications
| Parameter | Value |
|---|---|
| Display | 3-1/2 digit 18mm LCD |
| Measurement Range | 0 - 100,000 Lux |
| Accuracy (≤10,000 Lux) | ±(4%rdg + 10 digits) |
| Accuracy (>10,000 Lux) | ±(5%rdg + 10 digits) |
| Resolution | 1 Lux |
| Repeatability | ± 2% |
| Temperature Characteristic | ± 0.1%/°C |
| Sampling Time | 0.5 second |
| Photo Detector | One silicon photo diode with filter |
| Power Source | 9V battery |
| Dimensions | 130L x 72W x 30H (mm) |
| Item Weight | 11.2 ounces |
Figure 3: LX1010BS Dimensions
9. Warranty and Support
Dr.meter products are designed for reliability and performance. For warranty information or technical support, please contact Dr.meter customer service. Keep your purchase receipt as proof of purchase.
For further assistance, visit the official Dr.meter store: Dr.meter Store