Introduction
The Tekit GM1351 Digital Sound Level Meter is designed for precise sound measurement in various environments. It is suitable for use by safety engineers, health professionals, industrial safety offices, and for general sound quality control. This device helps monitor noise levels in factories, offices, traffic, residential areas, and audio systems. It adheres to international standards IEC651 TYPE2 and ANSI S1.4 TYPE2.
Image: Front view of the Tekit GM1351 Digital Sound Level Meter, displaying 51.1 dBA.
Product Features
- Measurement Range: 30 - 130 dBA, allowing for a wide range of noise level detection.
- Accuracy: Provides measurements with an accuracy of ±1.5 dB.
- Frequency Range: Capable of measuring frequencies from 31.5Hz to 8.5KHz.
- Frequency Weighting: Utilizes A-weighting, which approximates the human ear's response to sound.
- Digital Display: Features a 4-digit LCD for clear readings.
- Resolution: Displays measurements with a resolution of 0.1dB.
- Sample Rate: Updates readings 2 times per second.
- Microphone: Equipped with a 1/2 inch electric condenser microphone.
- MAX Reading Function: Allows users to capture and display the maximum sound level detected.
- Low Battery Indication: Notifies the user when the battery level is low.
- Automatic Power Off: Conserves battery life by automatically shutting down after a period of inactivity.
- Auto Backlight Display: Enhances readability in low-light conditions.
- Tripod Mounting Option: Includes a threaded insert for mounting on a tripod for stable, hands-free measurements.
Package Contents
Upon opening the package, please verify that all items are present and in good condition:
- 1 x Tekit GM1351 Digital Sound Level Meter
- 1 x 9V Battery (included)
- 1 x User Manual (this document)
Setup
1. Battery Installation
- Locate the battery compartment cover on the back of the device.
- Slide the cover downwards to open the compartment.
- Insert the included 9V battery, ensuring correct polarity (+ and - terminals).
- Close the battery compartment cover by sliding it back into place until it clicks securely.
Image: Battery compartment open, showing where to insert the 9V battery.
2. Powering On/Off
Press the Power button located on the front of the device to turn it on. The LCD display will illuminate. Press the same button again to turn the device off. The device also features an automatic power-off function to conserve battery life.
Image: Front view of the meter with the display off, highlighting the power button.
Operating Instructions
1. Taking a Measurement
- Ensure the device is powered on.
- Point the microphone towards the sound source you wish to measure.
- The current sound level in dBA will be displayed on the LCD screen. The readings update approximately twice per second.
Image: Angled view of the meter during a measurement.
2. MAX Hold Function
To capture and display the maximum sound level detected during a measurement session:
- While the device is measuring, press the MAX button. The display will show the highest sound level recorded since the MAX function was activated.
- Press the MAX button again to exit MAX hold mode and return to real-time measurements.
Image: Top-down view showing the MAX button.
3. Backlight
The device features an automatic backlight for improved visibility in dimly lit conditions. The backlight will activate automatically when needed.
Specifications
| Measuring Range | 30 - 130 dBA / 35 - 130 dBC |
| Accuracy | ±1.5 dB |
| Frequency Range | 31.5Hz - 8.5KHz |
| Frequency Weighting | A |
| Digital Display | 4 digits |
| Resolution | 0.1dB |
| Sample Rate | 2 times/second |
| Microphone | 1/2 inch electric condenser microphone |
| Power Supply | 9V battery |
| Operation Condition | 0-40℃, 10-80% RH |
| Storage Condition | -10-60℃, 10-70% RH |
| Standards | IEC651 TYPE2, ANSI S1.4 TYPE2 |
| Model Number | GM1351 |
| Manufacturer | Tekit |
Image: Back view of the meter, showing the model number and tripod mounting option.
Maintenance
- Cleaning: Use a soft, dry cloth to clean the exterior of the device. Do not use abrasive cleaners or solvents.
- Storage: When not in use for extended periods, remove the battery to prevent leakage. Store the device in a cool, dry place, away from direct sunlight and extreme temperatures.
- Microphone Care: Keep the microphone clean and free from dust or debris to ensure accurate readings. Avoid exposing the microphone to moisture.
Image: Side view of the meter with the microphone windscreen removed, illustrating the microphone element.
Troubleshooting
- Device does not power on:
- Check if the 9V battery is correctly installed with the correct polarity.
- Replace the battery with a new one if the existing battery is depleted.
- Inaccurate readings:
- Ensure the microphone is clean and unobstructed.
- Verify that the device is positioned correctly towards the sound source.
- Avoid measuring in environments with extreme temperature or humidity fluctuations outside the specified operating conditions.
- Display is dim or blank:
- The low battery indicator may be active. Replace the battery.
- Ensure the device is not exposed to direct sunlight which can make the LCD difficult to read.
Warranty and Support
For warranty information or technical support, please refer to the retailer or manufacturer's official website where the product was purchased. Keep your purchase receipt as proof of purchase.