What is the minimum water depth for field deployment?

FAQ - ADC - Acoustic Digital Current Meter

1. Q: What is the minimum water depth for field deployment? A: 4 cm.
   
   
2. Is it possible to delete data on the handheld using the QReview software?
3. How often does the OTT ADC have to be recalibrated?
4. Is it possible to pre-configure measuring points/sites in the office?
5. What are the main differences / advantages of ADC compared to a mechanical current meter?
6. What maintenance is necessary?