Amprobe GP-2 Geo-Test Manual do Utilizador descarregar pdf (Página 10)

GP-2 GeoTest

EN - 10

Press GO to take the measurement and read the result on the display. At the

end of the test, a screen similar to the following will be displayed.

NOTE! If you keep pressing GO, the instrument takes more measurements

consecutively. When a new value is acquired, the symbol Ω blinks on the main

display, the instrument emits a short sound and the counter shown on the

secondary display on the left-hand side is updated. This counter indicates the

number of measurements calculated on the basis of the average resistance

value.

0.960.96 ΩΩ

2 2 0.93 0.93 ΩΩ

WARNING: When the message “Measuring” appears on the display, the

instrument is measuring. Do not disconnect the alligator

clips during the measurement.

Ex.: if the operator takes three measurements consecutively, the instrument will

display:

- 1

measurement:

main display = measured resistance value (Ex: 0.90Ω)

secondary display on the left-hand side = 001 (no. of measurements = 1

means that 1 earth measurement has been taken)

secondary display on the right-hand side = average of the measurements

taken (in case just one measurement has been taken the average value is

equal to the measured value, in this case 0.90Ω)

- 2

measurement:

main display = measured resistance value (Ex: 0.96Ω)

secondary display on the left-hand side = 002 (no. of measurements = 2

means that 2 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)/2 = 0.93Ω)

- 3

measurement:

main display = measured resistance value (Ex: 0.93Ω)

No. of earth resistance

measurements

included in the

calculation of the

average resistance

Average value of the resistance calculated

as:

(Val1+Val2+…+Valn)/(No. measurements)

Value of the

resistance

1 2 ... 5 6 7 8 9 10 11 12 13 14 15 ... 40 41

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Amprobe GP-2 Geo-Test Manual do Utilizador Página 10

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