48
Ground Resistance Tester Model 6471
•
The screen now displays
EARTH COUPLING 2
. Make a 3-pole earth mea-
surement on the second earth system (measurement of R
2
). For this second
measurement, leave the
H (Z)
and
S (Y)
electrodes in the same positions as
for the first measurement.
•
Store this result in the same memory location as before by pressing the
MEM
button twice.
•
The screen now displays the message
EARTH COUPLING 3
. Disconnect
terminal
S (Y)
and make a 2-wire resistance measurement with terminal
H
(Z)
connected to earth 1 and terminal
E (X)
to earth 2.
•
Record this result by pressing the
MEM
button twice.
•
EARTH COUPLING 4
and the results of the measurements are displayed.
The calculation is based on the following formulas:
R
C
= (R
1
+ R
2
– R
1-2
)/2
C
1
= R
C
/R
1
and C
2
= R
C
/R
2
R
A
= R
1
- R
C
R
b
= R
2
- R
C
•
To display all of the measurement parameters, press the
MR
button.
• To scroll through all of the measurements, use the ► and ▲ buttons.
then
x 4
Press
DISPLAY
several times to display the following parameters:
EARTH COUPLING 1
R
1
, U
OUT
and frequency, U
S-E
, I
H-E
, U-In (U
S-E
and frequency)
R
H
and R
S
if long press of START/STOP
EARTH COUPLING 2
R
2
, U
OUT
and frequency, U
S-E
, I
H-E
, U-In (U
S-E
and frequency)
R
H
and R
S
if long press of START/STOP
EARTH COUPLING 3
R
1-2
, U
H-E
and frequency, I
H-E
, U-In (U
H-E
and frequency).
EARTH COUPLING 4
R
C
, C
1
, C
2
, R
A
, R
b
, U
out
and its frequency.
www.
ShopAEMC
.com
Shop for AEMC products online at:
1.888.610.7664
