56
•
“R=dV/I[Ohm]”: value of the resistance measured. It is indicated as decimal
positive number.
•
“Rho[Ohm/m]”: resistivity value calculated from measurements of resistance and
geometric constant K. It is indicated as decimal positive number.
•
“Sigma[%]”: mean square deviation value calculated on the repetitions of the
measurement reported as a percentage of the measurement value. It is indicated as a
positive integer number written as “xxx” or “xxx*”. Measurements that have been
accepted despite having a Sigma value higher than that set by the operator are shown with
an asterisk “*” at the
end.
•
“dV[V]”: value of potential difference measured between electrodes M and N. It
is indicated as a positive or negative decimal number.
•
“I[A]”: value of electrical current intensity measured between electrodes A and B.
It is indicated as a positive or negative decimal number.
•
“SP[V]”: spontaneous potential value measured between electrodes A and B. It is
indicated as a positive or negative decimal number.
•
“IP[ms]”: measured value of the induced polarisation. It is indicated as decimal
positive number.
•
“K”: geometric constant calculated from the electrode positions. It is indicated as
decimal positive number.
•
“Time”: day and time of execution of the measurement. It is indicated in the
format “yyyy-mm-gg hh:mm”.
•
“Longitude”: string of decimal degrees of longitude of the measurement point.
North longitude degrees are given as positive numbers, south latitude degrees are given
as negative numbers.
•
“Latitude”: string of decimal degrees of latitude of the measurement point. North
latitude degrees are given as positive numbers, south latitude degrees are given as
negative numbers.
•
“Altitude”: altitude in metres of the measuring point.
•
“Frequency”: value of the frequency used to perform the individual measurement.
Below is an example of the portion of the file containing 8 measurements that have not
yet been performed.
Measures list 8
# A
B
M
N
R[Ohm]
Rho[Ohm/m] Sigma[%]
dVmn[V]
Iab[A]
SP[V] IP[ms]
K
Time Longitude
Latitude Altitude Frequency
Содержание Polares 32
Страница 5: ...6 GPD file format 49 General structure 49 File header 50 Electrodes table 54 Measurements table 55...
Страница 6: ......
Страница 17: ...12 FIGURE 2 INTERNAL MPXS TEST 1 A AND 1 B FIGURE 3 EXTERNAL MPXS TEST 2 3 N...
Страница 23: ...18 FIGURE 11 SYSTEM COMPLETE WITH 48 ELECTRODES WITH 1 EXTERNAL MPX...
