1. Introduction
The TA636A Digital Lux Meter is a professional, handheld device designed for accurate measurement of illumination levels. It utilizes a high-precision silicon photodiode with filter lenses to ensure reliable readings. This manual provides detailed instructions for the safe and effective use of your lux meter.
Figure 1: TA636A Digital Lux Meter and its standard packaging.
2. Package Contents
Please check the package carefully to ensure all items are present and undamaged:
- 1 x TA636A Digital Lux Meter (Host)
- 1 x Instruction Manual
- 1 x Protective Cover
- 1 x Cloth Bag
Figure 2: Standard accessories included with the TA636A Lux Meter.
3. Product Overview
Familiarize yourself with the components of your TA636A Digital Lux Meter:
Figure 3: Front and back panel instructions with key components labeled.
- Light Sensor: Located at the top, responsible for detecting illumination.
- LCD Screen: Displays measurement readings, units, and status indicators.
- Backlight/Unit Switch Button: Toggles backlight and switches between LUX and FC units.
- Max/Min Button: Used to display maximum and minimum measured values.
- Data Hold Button: Freezes the current reading on the display.
- Power Button: Turns the device on or off.
4. Setup
4.1 Battery Installation
The TA636A Lux Meter requires 2 x 1.5V AAA (R03/LR03) batteries (not included). Follow these steps to install them:
- Locate the battery compartment cover on the back of the device.
- Use a suitable tool (e.g., a small screwdriver or coin) to open the cover.
- Insert two AAA batteries, ensuring correct polarity (+ and -).
- Replace the battery compartment cover and secure it.
Figure 4: Battery compartment for 2 x 1.5V AAA batteries.
Caution: Please read the manual for safety before operation. Ensure batteries are removed if the device is stored for extended periods.
5. Operating Instructions
5.1 Power On/Off
Press the Power button (
) to turn the lux meter on or off.
5.2 Unit Switching (LUX/FC)
The device supports both LUX and FC units. Press the UNIT button () to switch between LUX and FC measurement units.
Figure 5: Switching between LUX and FC units.
5.3 Data Hold
To freeze the current reading on the display, press the HOLD button (). Press it again to release the hold function and resume live measurements.
5.4 Maximum/Minimum Value Measurement
To view the maximum or minimum measured values:
- Press the MAX/MIN button () once to display the maximum value recorded.
- Press the MAX/MIN button again to display the minimum value recorded.
- Press it a third time to exit Max/Min mode and return to live measurement.
Figure 6: Using the Max/Min function to view extreme values.
5.5 Backlight
The device features a backlight for improved visibility in low-light conditions. The backlight is typically activated by a short press of the Backlight/Unit switch button (refer to Figure 3 for location).
5.6 Auto Power Off (APO)
To conserve battery life, the lux meter will automatically shut down after 15 minutes of inactivity. This feature can be manually disabled if continuous operation is required (refer to the full PDF manual for instructions on disabling APO).
6. Technical Specifications
The following table outlines the technical parameters of the TA636A Digital Lux Meter:
Figure 7: Detailed technical specifications.
| Parameter | Specification |
|---|---|
| Model | TA636A |
| Measurement method | Integral type |
| Range | 0.1 ~ 200000LUX / 0.01 ~ 20000FC |
| Measuring level | 200/2000/20000/200000LUX, 20/200/2000/20000FC |
| Accuracy | ±(4%+10dgts) (calibrated under standard incandescent lamp at color temperature 2856°K) |
| Resolution | LUX < 200: 0.1; LUX ≥ 200: 1 FC < 20: 0.01; 20 ≤ FC < 200: 0.1; FC ≥ 200: 1 |
| Display | 4 digits, max 1999 |
| Light sensor | Silicon photodiode with filter |
| Sampling rate | 2 times/s |
| Incident angle | 120° |
| Repeated test deviation | ±2% |
| Spectral range | 400~700nm |
| Auto power off | 15mins (can be disabled) |
| Working environment | -10 ~ 50°C, Max 80%RH, indoor altitude < 2000m |
| Storage environment | -10 ~ 50°C, Max 70%RH (battery removed) |
| Product size | 150 x 56 x 28mm |
| Screen size | Approx. 150g (battery not included) |
| Power | 2 x 1.5V AAA (R03/LR03) |
7. Maintenance
7.1 Cleaning
Wipe the device with a dry, soft cloth. Do not use abrasive cleaners or solvents. Keep the light sensor clean and free from dust or obstructions for accurate readings.
7.2 Storage
When storing the lux meter for an extended period, remove the batteries to prevent leakage and damage to the device. Store in a cool, dry place within the specified storage environment temperature and humidity ranges (-10 ~ 50°C, Max 70%RH).
7.3 Battery Replacement
When the low battery indicator appears on the LCD screen, replace the batteries as described in the "Battery Installation" section (4.1).
8. Troubleshooting
If you encounter issues with your lux meter, consider the following common solutions:
- No Display/Device Not Turning On: Check if the batteries are installed correctly and have sufficient charge. Replace batteries if necessary.
- Inaccurate Readings: Ensure the light sensor is clean and unobstructed. Verify that the correct measurement unit (LUX/FC) is selected.
- Auto Power Off Too Soon: The device has an auto power-off feature after 15 minutes of inactivity. If you require continuous operation, this feature can be disabled (refer to the full PDF manual for details).
For further assistance, please refer to the comprehensive user manual PDF or contact customer support.
9. Warranty and Support
For detailed warranty information, technical support, and advanced operational instructions, please refer to the official user manual available in PDF format. You can access the PDF manual via this link: TA636A Digital Lux Meter User Manual (PDF).
Always ensure you are using the latest version of the manual for the most up-to-date information.
