HT instruments SIRIUS87 - Manual (Page 53)

SIRIUS 87
EN - 51
4.6.1. Measurement procedure for "2P" test mode
1. Select "
2P" earth measurement mode by means of the F1 key.
2. Connect the Black, Red, Green and Blue cables to the corresponding input terminals of the
instrument
B1, B2, B3, B4 (see Fig. 19)
3. Connect the black, and green cables to the earth plant and red and blue cables to the
auxiliary rod.
Fig. 19: 2 points earth resistance measurement
4. Press
the START/STOP key. The instrument starts the test.
 At the end of the test the instrument
displays the values alongside.
EARTH
0.96


2P 0.93 
CAUTION
The display of “Measuring” means that the instrument is measuring. During
this phase never disconnect test leads.
SAVING:
The tests can be stored pressing the
SAVE key twice
(according to § 5.1).
Note: If
START/STOP key was kept pressed, the instrument takes more consecutive
tests.
5. When a new value is acquired the instrument emits a short sound and calculates the
new average value.
6. Press
DISP key to show how many measurements are in average value
calculation and the measuring mode.
7. Press
CLR key if you want to cancel the medium value of the resistance
and the no. of measurements which are included in the calculation.
START
STOP
Mode “2P”.
Valore della
resistenza
misurato
Average value of earth resistance calculated over
the number of test displayed.
CLR
DISP
SAVE