DITDA is instrument for ultrasonic wave velocity measurement. Basically DITDA has same function with SOWAN. But in DITDA we do not need oscilloscope to display the result. The wave propagation time....
We produce high qualified geophysical instrument much cheaper. i.e. 1. Automatic resistivity meter ( multicahnnel) 2. Manual resistivity meter ( twin probe) 3. Induced Polarization 4. Sonic....
S-field is sophisticated technology in resistivity meter. It is state-of-the-art multi-channel portable memory earth resistsivity meter with memory storage of readings and user defined measure cycles....
SOWAN is instruments for the ultrasonic wave velocity measurement of rock samples. It is possible to read P and S wave propagation time with high accuracy, because it contains high voltage ( 500V) ....