Geo – Master

Geo-Frequency Sensing System
Dielectric permittivity (0) The ‘absolute’ permittivity of a dielectric, being the ratio of the electric displacement to the electric field strength at the same point. Its value for free space is 8.854185 x 10-12 F/m.

1. The Telescopic antenna is the receiver antenna and the DBI antennas are the transmitter antenna. Connect both the antenna to the long-range system as shown in the picture below
2. Connect the system holder to the base of long-range system, by rotating the thread attaching the base connector, and ensure it is fit properly for gyroscopic positioning.
3. Turn ON the LPS-1200 system and the Host System to build a connection for data transfer. Once the beep sound is heard that indicates the system is ON and waiting for Tab receiver.
4. In the Host System homepage, select the long range survey, where the system prompts to the next step of range selection and tablet communication. Enter the Password 1234.
5. Select the appropriate front-range and depth-range depending upon the areas of topography and geological conditions. After selection, click on the communication address shown in the tablet to build connection in between the Tab and Long-range system.
6. Once the system is connected and both host and long-range system is paired we start receiving the live data on the screen indicated as a graphical dial. It also shows the frequency at the bottom left of the tablet screen. For the first time, system may ask for authentication and the password is 1234.
7. Adjust the frequency to the low frequency signals and follow the readings shown on the display according to the movement of the long-range system.
8. Start from any corner of the property depending on the topography of the land and physically hold the long-range system ad rotate in clock-wise or anti clock-wise until we get the highest data on the display dial. The highest data indicates we are on the highest magnetic axis to start the survey.
9. From the highest axis start the survey and follow the direction and continue the survey until the long-range system swivels 180o which indicates that we are crossing the target.
10. Mark the target and confirm the directional fluctuation at a distance of 5 meters by checking teh system pointing direction from four sides of the target. After ensuring the number of directions , increase the frequency to a medium or higher frequency to check the short-range. Fold the telescopic antenna to check the pin point target.
11. From the highest axis start moving towards the target to which ensures the rotation in clockwise or anticlockwise to confirm that we are on the target.
12. The rotation of the system confirms that we have pointed a fault zone, mark the confirmed target. Next step is to conduct a depth survey to calculate the depth from the surface to the subsurface fault.
13. Extend the receiver antenna and decrease the frequency to low frequency to conduct the depth survey. We need to follow the data on the depth axis screen which is the y-axis for the location axis.
14. From the located target follow the highest axis to ensure we get 180o in the long-range system which shows there is a magnetic difference on the y-axis of the location. Mark the specific location where we get the difference and continue the survey on the same axis to check for the second and third difference area.
15. Measure the distance from the target to the differed zone on the depth axis followed by distance to the first difference, second and third , measure the distance in meters.
16. Make a note of the measurements taken and finish the survey for further verification by the next cross checking method.

1. Fix the transmitter with the M,N electrodes at a distance of 10 meters in the ground , where the signals are getting disturbed.
2. In the settings, click “wireless sensor on”.
3. Now start the long range system which gives the transmission logo, which helps in continuous data communication.

Connection Procedure
• Turn on the Host system and click on VLF survey settings, set up to the required amplification.
(picture)
• Connect the probes to the ground at a distance of 10 meters probe 1 at 0 and probe 2 at 10 meters.
• If the ground contact is perfect we get the LED light blinking in the host .
(picture)

Working Methodology
1. Click on the VLF survey after connecting the cable and probes to the system.
2. Fix the probe 1(M) at point 0 meters and probe 2 (N) at 10 meters.
3. Check if the LED in the host system flickers which indicates the ground connection is connected.
4. Click on profile to open the curve graph page in the host system.
5. Click process to record the frequencies from the ground which collects the continuous data from surface to subsurface.
6. On completion of the data collection move the probes from 0mts to 1mts (M probe) and from 10mts to 11mts (N) probe followed by 1-2………., 11-12…….and record the complete line.
7. In the curve graph we can see the increase and decrease in the data collected at each point and the most value decreased station is selected as the considerable point of drilling.
8. Click profile to check the 2D structure of the survey and the imaging gives a fair idea in graphical representation on subsurface structure to understand the depth for the station which is selected.