HT instruments SIRIUS87 - Manual (Page 57)

SIRIUS 87
EN - 55
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.
Example: if the operator takes three consecutive measurements, the instrument displays
1
st
measurement:
main display = measured resistance value (Ex: 0.90
)
secondary display on the left-hand side = 001 (no. of measurements = 1
means that 1 earth measurement has been taken)
secondary display = average of the measurements taken (in case just one
measurement has been taken the medium value is equal to the measured
value, in this case 0.90
)
2
nd
measurement:
main display = measured resistance value (Ex: 0.96
)
secondary display = average of the measurements taken ((Val1+Val2)/no.
of measurements = (0.90+0.96)/2 = 0.93
)
3
rd
measurement:
main display = measured resistance value (Ex: 0.93
)
secondary display = average of the measurements taken ((Val1+Val2)/no.
of measurements = (0.90+0.96+0.93)/3 = 0.93
)
Note: Any test with result over 1999
 is not inserted in the calculation of medium value.
Example: 1
st
measurement:
main display: 1,07

secondary display: 1,07

2
nd
measurement
main display: 4,15

secondary display: 2,61

3 rd measurement (not inserted in the medium value)
main display: >1999

secondary display: 2,61

CLR
DISP