User Manual Q&AAnswer
Sep 22, 2025 - 10:13 AM
Calibrating the TENMARS TM-103 Sound Level Meter Data Logger using a standard Acoustic Calibrator is essential to ensure accurate measurements. Here is a step-by-step guide based on the user manual:
1. **Prepare for Calibration:**
- Make sure you have a standard Acoustic Calibrator that generates a 94dB, 1KHz Sine wave.
- Set the display to dBA and the Time weighting to FAST on the sound level meter.
2. **Insert Microphone into Calibrator:**
- Carefully insert the microphone nozzle into the insertion hole of the Acoustic Calibrator.
3. **Initiate Calibration:**
- Press the A/C button on the sound level meter.
- Press and hold the HOLD button and the A/C button simultaneously for more than 1 second. The LCD will start blinking to indicate calibration mode.
4. **Complete Calibration:**
- While the LCD is blinking, release the A/C and HOLD buttons. The sound level meter will display 94.0 dBA if the calibration is successful.
- If the meter does not show 94.0 dB, repeat the calibration process until the correct value is displayed.
- The recommended recalibration cycle is once a year to maintain accuracy.
By following these steps, you can calibrate your TENMARS TM-103 Sound Level Meter Data Logger accurately using a standard Acoustic Calibrator as per the manufacturer's guidelines.
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