1. Introduction
The Dr.meter LX1330B Digital Illuminance Light Meter is a high-precision instrument designed for measuring light intensity in various environments. It provides fast and accurate readings, making it suitable for a wide range of applications including home, office, factory, and plant cultivation settings. This manual provides detailed instructions on the setup, operation, maintenance, and troubleshooting of your LX1330B light meter.
Figure 1.1: Dr.meter LX1330B Digital Illuminance Light Meter
2. Product Overview
2.1 Package Contents
Upon opening the package, please verify that all the following items are included:
- 1 x Dr.meter LX1330B Light Meter
- 1 x Protective Jacket (Orange)
- 1 x User Manual
- 1 x Screwdriver
- 1 x 9V Battery
- 1 x Spare Screw
Figure 2.1: Package Contents
2.2 Key Features
- High Precision & Fast Response: Delivers readings 2 times per second for accurate light intensity data.
- FC/LUX Conversion: Easily switch between Foot-Candle (FC) and Lux (LUX) units.
- PEAK Data Recording: Captures and displays the highest light pulse value.
- Low Battery Alert: Indicates when the 9V battery needs replacement.
- Versatile Usage: Suitable for indoor and outdoor environments, including homes, offices, factories, and plant growth areas.
- Split Sensor Design: Allows for 360-degree rotation of the sensor for flexible measurement.
- Durable & Drop-Proof: Equipped with a protective rubber jacket for enhanced durability.
2.3 Product Components
Familiarize yourself with the different parts of your light meter:
Figure 2.2: Labeled Components of the LX1330B
- LCD Display: Shows measurement readings, units (LUX/FC), and mode indicators.
- Power On/Off Button: Turns the device on or off.
- LUX/FC Switch Button: Toggles between Lux and Foot-Candle measurement units.
- PEAK Button: Activates PEAK data recording mode.
- HOLD Button: Freezes the current reading on the display.
- RANGE Button: Adjusts the measurement range.
- Photo Detector: The sensor head that measures light intensity.
- Retractable Spring Cord: Connects the photo detector to the main unit.
- Low Battery Warning Indicator: A symbol (+ -) on the LCD indicating low battery.
3. Setup
3.1 Battery Installation
The Dr.meter LX1330B requires one 9V battery (included). Follow these steps to install the battery:
- Carefully remove the orange protective rubber frame from the main unit.
- Locate the battery compartment on the back of the unit. Use the provided screwdriver to remove the screw securing the battery door.
- Remove the battery door.
- Connect the 9V battery to the positive and negative terminals inside the compartment. Ensure correct polarity.
- Place the battery into the compartment.
- Replace the battery door and secure it with the screw.
- Re-attach the orange protective rubber frame to the main unit.
Figure 3.1: Battery Installation Steps
4. Operating Instructions
4.1 Power On/Off
Press the POWER button to turn the light meter on. Press it again to turn the device off.
4.2 Selecting Measurement Units (LUX/FC)
The meter can display readings in either Lux (LUX) or Foot-Candle (FC). To switch between these units, press the LUX/FC button.
4.3 Adjusting Measurement Range
The LX1330B has multiple measurement ranges to accommodate different light intensities. If the display shows "1", it indicates that the light intensity exceeds the current range. Press the RANGE button to cycle through the available ranges until a valid reading is displayed. The meter offers ranges up to 200,000 Lux or 18,580 FC.
4.4 Data Hold Function
To freeze the current reading on the display, press the HOLD button. Press it again to release the hold and resume live measurements.
4.5 PEAK Data Recording
The PEAK function allows you to capture and display the highest light pulse value. This is particularly useful for measuring brief, high-intensity light sources. To activate, press the PEAK button.
4.6 Taking Measurements
Point the photo detector (sensor head) towards the light source you wish to measure. Ensure the sensor is clean and unobstructed. The reading will be displayed on the LCD. For accurate results, avoid direct measurement of photography lights or other extremely high brightness sources that may exceed the meter's range and potentially damage the sensor.
Figure 4.1: Measuring light with the split sensor
4.7 Common Luminosity Reference
The following table provides a general reference for common luminosity levels in Lux:
Figure 4.2: Common Luminosity Reference
| Lux Range | Environment |
|---|---|
| 100 - 300 Lux | Home daily lighting |
| 300 - 500 Lux | Office and conference room |
| 500 - 1,000 Lux | Indoor gymnasium lighting |
| 1,000 - 2,000 Lux | Laboratory precision operation |
| 2,000 - 5,000 Lux | Industrial assembly line |
| 5,000 - 10,000 Lux | Plant growth (medium and high light) |
| 10,000 - 25,000 Lux | Outdoor shadow area monitoring |
| 32,000+ Lux | Direct sunlight monitoring |
5. Maintenance
5.1 Cleaning
To ensure accurate readings and prolong the life of your meter, keep the photo detector (sensor) clean and free from dust or smudges. Use a soft, dry cloth to gently wipe the sensor and the meter's body. Do not use abrasive cleaners or solvents.
5.2 Battery Replacement
When the low battery indicator (+ - symbol) appears on the LCD, it's time to replace the 9V battery. Refer to Section 3.1 for detailed battery installation instructions.
5.3 Storage
When not in use, store the light meter in a cool, dry place, away from direct sunlight and extreme temperatures. Ensure the sensor protective cover is closed to prevent dust and scratches. If storing for an extended period, it is recommended to remove the battery to prevent leakage.
6. Troubleshooting
- Meter does not power on:
- Check if the 9V battery is correctly installed.
- Replace the battery if it is depleted.
- Display shows "1":
- This indicates that the measured light intensity is out of the current range. Press the RANGE button to select a higher measurement range.
- Inaccurate or inconsistent readings:
- Ensure the photo detector (sensor) is clean and free from dust or obstructions.
- Verify that the sensor is pointed directly at the light source.
- Check the battery level; low battery can affect accuracy.
- Avoid measuring extremely high brightness sources that could damage the sensor.
- Buttons are unresponsive:
- Try turning the meter off and on again.
- Ensure the battery is not low.
7. Specifications
| Specification | Value |
|---|---|
| Model Number | LX1330B-V |
| Measurement Range (Lux) | 0 - 200,000 Lux |
| Measurement Range (FC) | 0 - 18,580 FC |
| Accuracy | ±3% |
| Repeatability | ±2% |
| Power Source | 1 x 9V Battery (included) |
| Item Weight | 12 ounces |
| Product Dimensions | 4 x 1 x 8 inches |
| Material | ABS |
| Manufacturer | Dr.meter |
8. Warranty and Support
8.1 Warranty Information
The Dr.meter LX1330B Digital Illuminance Light Meter typically comes with a 1-year limited warranty from the date of purchase. This warranty covers defects in materials and workmanship under normal use. Please retain your proof of purchase for warranty claims. For specific warranty terms and conditions, refer to the documentation provided with your product or contact Dr.meter customer support.
8.2 Customer Support
For any questions, technical assistance, or support regarding your Dr.meter LX1330B, please contact Dr.meter customer service. You can also refer to the official user manual PDF for additional details:
