Introduction
The TopTes TS-501B is a portable sound level meter designed for accurate noise level measurement in various environments. It features A/C weighting, a backlit LCD screen, and functions for capturing maximum and minimum sound pressure levels. This manual provides comprehensive instructions for the proper setup, operation, maintenance, and troubleshooting of your device.
Figure 1: The TopTes TS-501B Sound Level Meter, showing the main unit, microphone windscreen, battery cover, and three AAA batteries. A carry case is also included.
Setup
1. Battery Installation
- Locate the battery compartment on the back of the device.
- Slide the battery compartment cover downwards to open it.
- Insert three (3) AAA batteries, ensuring correct polarity (+/-) as indicated inside the compartment.
- Close the battery compartment cover by sliding it upwards until it clicks into place.
2. Microphone Windscreen Attachment
- Gently slide the foam windscreen onto the microphone at the top of the device.
- Ensure the windscreen is securely fitted to prevent it from falling off during use.
- The windscreen helps to reduce wind noise and improve measurement accuracy, especially in outdoor environments.
Figure 2: Detailed view of the 1/2-inch electric condenser microphone with its high-precision sensor and windshield ball. The foam windscreen is shown attached.
Operating Instructions
1. Power On/Off
- To power on the device, press and hold the Power button (
) located on the front panel. - To power off the device, press and hold the Power button again. The device also features an automatic power-off function to conserve battery life.
2. Display and Backlight
- The 2.25-inch LCD screen displays noise levels in decibels (dB), along with temperature and relative humidity.
- To activate or deactivate the backlight, long press the Backlight button (
). This improves visibility in low-light conditions.
Figure 3: The clear 2.25-inch LCD screen, easy to read with its bright backlight. It displays dB levels, temperature, and humidity.
3. A/C Weighting Selection
- The TS-501B supports both A-weighting and C-weighting.
- To switch between A-weighting and C-weighting, long press the °C/°F button. The selected weighting (A or C) will be displayed on the screen.
- A-Weighting: Measures noise levels as perceived by the human ear (30-130 dBA). Suitable for general noise measurements in communities, offices, and residential areas.
- C-Weighting: Measures the actual sound pressure level across a wider frequency range (30-130 dBC). Ideal for analyzing industrial noise, audio systems, and environments with significant low-frequency components.
Figure 4: A-Weighting (30-130 dBA) measures the relative loudness perceived by the human ear, suitable for environmental noise assessment.
Figure 5: C-Weighting (30-130 dBC) is used for sound system commissioning and industrial noise measurements, providing a flatter frequency response.
4. MAX/MIN Measurement
- Press the MAX/MIN button (
) to cycle through Maximum (MAX) and Minimum (MIN) measured values. - MAX: Displays the highest sound pressure level recorded since the function was activated.
- MIN: Displays the lowest sound pressure level recorded since the function was activated.
Figure 6: MAX represents the highest values measured over a given period, while MIN represents the lowest values.
5. Data Hold Function
- To freeze the current reading on the display, press the Hold button (
). The "H" indicator will appear on the screen. - Press the Hold button again to release the hold and resume live measurements.
6. Fast/Slow Time Weighting
- Press the F/S button (
) to switch between Fast and Slow time weighting. - FAST: Provides a rapid response to sound changes, suitable for capturing sudden noise peaks.
- SLOW: Provides an averaged response to sound changes, suitable for measuring average noise levels over time.
7. Temperature Unit Conversion
- To switch between Celsius (°C) and Fahrenheit (°F) for temperature display, short press the °C/°F button.
8. Low Battery Indicator
- A low battery indicator will appear on the screen when the battery level is low. Replace the batteries promptly to ensure accurate measurements.
Maintenance
- Cleaning: Use a soft, dry cloth to clean the device. Do not use abrasive cleaners or solvents.
- Storage: When not in use for extended periods, remove the batteries to prevent leakage and damage. Store the device in its carry case in a cool, dry place away from direct sunlight and extreme temperatures.
- Microphone Protection: Always use the provided microphone windscreen to protect the condenser microphone from dust and physical damage. When storing, use the protective cap over the microphone.
- Calibration: The device is factory calibrated. For continued accuracy, periodic professional calibration may be required depending on usage and industry standards.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Device does not power on. | Dead or incorrectly installed batteries. | Check battery polarity. Replace with new AAA batteries. |
| Inaccurate readings. | Microphone obstructed or damaged; strong wind interference; device not calibrated. | Ensure microphone is clear. Use windscreen in windy conditions. Consider professional calibration if accuracy issues persist. |
| Display is dim or flickering. | Low battery level. | Replace batteries. |
| "OL" or "UL" displayed. | Overload (sound level too high) or Underload (sound level too low). | Move to an environment within the 30-130 dB measurement range. |
Specifications
- Model: TS-501B
- Measurement Range: 30-130 dB
- Accuracy: ±1.5 dB
- Frequency Range: 30 Hz - 8000 Hz
- Weighting: A and C
- Display: 2.25-inch Backlit LCD
- Microphone: 1/2 inch Electric Condenser Microphone
- Power: 3 x AAA Batteries (included)
- Dimensions: 7.13 x 3.5 x 2.32 inches
- Weight: 9.59 ounces
- Included: 1x TS-501B Decibel Meter, 3x AAA Batteries, 1x User Manual, 1x Carry Bag
Warranty and Support
For warranty information, technical support, or service inquiries, please refer to the contact information provided on the product packaging or visit the official TOPTES website. Keep your purchase receipt as proof of purchase for warranty claims.
Manufacturer: TOPTES
Date First Available: November 25, 2022
Visit the TOPTES Store: TOPTES Official Store
