Amprobe GP-2 Geo-Test - Manual (Page 11)

GP-2 GeoTest
EN - 11
secondary display on the left-hand side = 003 (no. of measurements = 3
means that 3 earth measurements have been taken consecutively)
secondary display on the right-hand side = average of the measurements
taken ((Val1+Val2)/no. of measurements = (0.90+0.96+0.93)/3 = 0.93
Ω
)
NOTE! A test with a result over 700
Ω
is not inserted in the calculation of average value.
Example:
1
st
measurement
Main display: 1,07
Ω
Secondary display on the left-hand side: 1
Secondary display on the right-hand side: 1,07
Ω
2
nd
measurement
Main display: 4,15
Ω
Secondary display on the left-hand side: 2
Secondary display on the right-hand side: 2,61
Ω
3
rd
measurement (not inserted in the average value)
Main display: 1018
Ω
Secondary display on the left-hand side: 2
Secondary display on the right-hand side: 2,61
Ω
Press CLR if you want to cancel the average value of the resistance and the no.
of measurements which are included in the calculation (displayed on the
secondary displays on the right-hand side and on the left-hand side
respectively). A screen similar to the following will be displayed:
0.96 0.96
Ω Ω
- - - - - - - - - - - -
The test results can be stored in memory by pressing SAVE (see paragraph
5.1).
NOTE! The resistance measurement is taken according to a 4-wire voltmetric method.
Therefore, it is not affected by the resistance value of the cables used: it is not
necessary to calibrate the cables or their extension.
SAVE
CLR
Last value of resistance
measured