1. Introduction
Thank you for purchasing the H HOLDPEAK 881C Digital Lux Meter. This device is designed for measuring illuminance, providing accurate readings in both Lux and Foot-Candle (FC) units. It features a wide measurement range, peak hold, data hold, and a backlit LCD display for various applications, including plant growth monitoring and LED lighting assessment. Please read this manual thoroughly before use to ensure proper operation and to maintain the device's longevity.
Image 1: H HOLDPEAK 881C Digital Lux Meter showing its basic functions like Lux/FC unit selection, low battery indication, over-range reminder, backlight function, data hold, and auto zero.
2. Key Features
- Wide Measurement Range: Measures from 0.1 to 200,000 Lux and 0.01 to 20,000 FC.
- Unit Selection: Easily switch between Lux and FC units.
- Peak Hold Function: Captures and displays the maximum illuminance reading.
- Data Hold Function: Freezes the current measurement on the display.
- Backlit LCD Display: Ensures clear readability in various lighting conditions.
- Detachable Light Sensor: Allows for flexible positioning of the sensor for accurate readings.
- Low Battery Indication: Alerts the user when battery replacement is needed.
- Over-range Reminder: Indicates when the measured value exceeds the selected range.
- Auto Zero: Automatically resets the measurement to zero.
Image 2: The Lux Meter displaying its over-range indication for Lux (1.0-200,000 Lux) and FC (0.01-20,000 FC) ranges, and highlighting its high accuracy with a Silicon Photo Diode measuring 2-3 times per second.
3. Package Contents
Upon unpacking, please verify that all items listed below are present and in good condition.
- H HOLDPEAK 881C Digital Lux Meter
- Carrying Pouch
- 9V Battery
- Mini Screwdriver (for battery compartment)
- Instruction Manual
Image 3: Contents of the H HOLDPEAK 881C package, showing the lux meter, a protective carrying case, a 9V battery, a small screwdriver, and the instruction manual.
4. Setup
4.1 Battery Installation
The H HOLDPEAK 881C Lux Meter requires one 9V battery for operation. Follow these steps to install the battery:
- Locate the battery compartment on the back of the meter.
- Use the provided mini screwdriver to unscrew the small screw securing the battery compartment cover.
- Remove the cover.
- Connect the 9V battery to the battery clip, ensuring correct polarity.
- Place the battery into the compartment.
- Replace the battery compartment cover and secure it with the screw.
Video 1: This video demonstrates the process of installing the 9V battery into the H HOLDPEAK 881C Digital Lux Meter, including unscrewing the battery cover and connecting the battery.
5. Operation
5.1 Button Functions
Familiarize yourself with the buttons on the device for effective operation.
Image 4: Detailed diagram of the H HOLDPEAK 881C Lux Meter, labeling the Photo Detector, LCD Display, Power Switch, Lux/FC Unit Switch, Range Switch, Backlight Button, Data-Hold Switch, and Data-Peak Switch.
- POWER Switch: Press to turn the illuminance meter ON or OFF.
- LUX/FC Unit Switch: Press to toggle between Lux and FC measurement units.
- RANGE Switch: Press to cycle through different measurement ranges (e.g., 200Lux/20FC, 2,000Lux/200FC, 20,000Lux/2,000FC, 200,000Lux/20,000FC).
- Backlight Button: Activates or deactivates the LCD backlight for improved visibility.
- HOLD Switch: Press to freeze the current reading on the display. Press again to release.
- PEAK Switch: Press to enter Peak Hold mode, capturing the maximum reading. Press again to clear the peak recording.
5.2 Taking Measurements
- Turn on the meter using the POWER switch.
- Remove the protective cap from the photo detector.
- Select the desired unit (Lux or FC) using the LUX/FC switch.
- Choose an appropriate measurement range using the RANGE switch. If the display shows "OL", the range is too low; select a higher range.
- Position the photo detector towards the light source you wish to measure. For best results, ensure the sensor is perpendicular to the light source.
- Read the illuminance value on the LCD display.
- Use the HOLD function to freeze a reading or PEAK function to capture the maximum value.
- When finished, replace the protective cap on the photo detector and turn off the meter.
Image 5: A user demonstrating the detachable light sensor feature of the H HOLDPEAK 881C Lux Meter, allowing for flexible measurement of light sources at an optimal position.
The detachable light sensor can be extended up to 25.6 inches (65 cm) for convenient measurement in hard-to-reach areas or for maintaining a consistent distance from the light source while viewing the display.
6. Applications
The H HOLDPEAK 881C Digital Lux Meter is suitable for a variety of applications where accurate light measurement is required.
- Assessing lighting levels in offices, homes, and industrial environments.
- Optimizing lighting for plant growth in greenhouses or indoor setups.
- Evaluating LED light output and performance.
- Photography and videography lighting setup.
- Educational purposes and scientific experiments.
Image 6: A visual representation of various environments where the H HOLDPEAK 881C Lux Meter can be effectively utilized, such as indoor living spaces, greenhouses, professional photography studios, and event lighting setups.
6.1 Illuminance Reference Guide
The following table provides common illuminance reference values for various environments. These are general guidelines and actual requirements may vary.
Image 7: The Lux Meter alongside a chart illustrating common illuminance levels (in Lux) recommended for various settings, from warehouses to precision indoor operations.
| Environment | Illuminance (Lux) |
|---|---|
| Warehouse | 30 – 75 Lux |
| Corridor/Toilet | 75 – 150 Lux |
| Living Room/Lounge | 150 – 300 Lux |
| Classroom/Meeting Room | 300 – 750 Lux |
| Operating Room | 750 – 1500 Lux |
| Indoor Precision Operation | 1500 – 3000 Lux |
7. Specifications
| Specification | Value |
|---|---|
| Product Dimensions | 6.5 x 2.6 x 1.3 inches (165 x 67 x 33 mm) |
| Item Weight | 7.1 ounces (201 grams) |
| Measurement Range (Lux) | 0.1 - 200,000 Lux |
| Measurement Range (FC) | 0.01 - 20,000 FC |
| Power Source | 1 x 9V Battery (included) |
| Display | 3-1/2 digit LCD with backlight |
| Sensor Type | Silicon Photo Diode with Filter |
| Sampling Rate | 2-3 times per second |
| Model Number | 881C (Internal: 4331906508) |
Image 8: The Lux Meter highlighting its physical dimensions (6.49in x 2.63in x 1.29in), the silicon diode light sensor for reduced error, the backlight function for clear display, and the humanized design of its operation buttons.
8. Maintenance
- Cleaning: Wipe the device with a soft, dry cloth. Do not use abrasive cleaners or solvents.
- Storage: When not in use for extended periods, remove the battery to prevent leakage. Store the meter in its carrying pouch in a cool, dry place, away from direct sunlight and extreme temperatures.
- Sensor Care: Keep the photo detector clean and free from dust or debris. Always replace the protective cap when the meter is not in use.
- Battery Replacement: Replace the 9V battery when the low battery indicator appears on the display.
9. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Meter does not turn on. | Dead or incorrectly installed battery. | Check battery installation; replace battery if necessary. |
| Display shows "OL". | Measurement exceeds current range. | Press the RANGE switch to select a higher measurement range. |
| Inaccurate readings. | Dirty photo detector; incorrect range selected; external interference. | Clean the sensor; ensure correct range; move away from strong electromagnetic fields. |
| Display is dim or flickering. | Low battery. | Replace the 9V battery. |
10. Warranty and Support
For warranty information or technical support, please refer to the contact details provided with your purchase or visit the official H HOLDPEAK website. Keep your purchase receipt as proof of purchase for warranty claims.
Manufacturer: H HOLDPEAK
