Fluke 1625 FE 1625 Users Manual - Page 23

Measuring, Range, Display Range, Resolution, Instrinsic, Error, Max. Op, erating

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A = intrinsic error En = variations R = routine test T = type test Earth/Ground Tester Specifications B[%] = ± B x 100% fiducial value Measuring Range Display Range 0.020 Ω 300 kΩ 0.001 Ω...2.999 Ω 3.00 Ω...29.99 Ω 30.0 Ω...299.9 Ω 0.300 kΩ...2.999 kΩ 3.00 kΩ...29.99 kΩ 30.0 kΩ...299.9 kΩ Resolution 0.001 Ω 0.01 Ω 0.1 Ω 1 Ω 10 Ω 100 Ω Instrinsic Error Max. Operating Error ± ( 2 % of mv +2 digit ) ± ( 5% of mv +5 digit ) Measuring time: typ. 8 sec. with a fixed frequency 30 sec. max. with AFC and complete cycle of all measuring frequencies Additional error because of probe-and auxiliary earth electrode resistance: Measuring error of RH and RS: RH (RS + 2000Ω) ×1.25 ×10−6% + 5digits RE typ. 10 % of RE + Rs + RH Max. probe resistance: ≤ 1 M Ω Max. auxiliary earth elec- ≤ 1 M Ω trode resistance: Automatic check if error is kept within the limits required by IEC61557-5. If after a measurement of probe-, auxiliary earth electrode- and earthing resistance, a measurement error of higher than 30 % is assumed because of the in- 15

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Earth/Ground Tester
Specifications
15
A
=
intrinsic error
En
=
variations
R
=
routine test
T
=
type test
[
]
100%
x
value
fiducial
B
%
B
±
=
Measuring
Range
Display Range
Resolution
Instrinsic
Error
Max. Op-
erating
Error
0.001
Ω
...2.999
Ω
0.001
Ω
3.00
Ω
...29.99
Ω
0.01
Ω
0.020
Ω
30.0
Ω
...299.9
Ω
0.1
Ω
300 k
Ω
0.300 k
Ω
...2.999 k
Ω
1
Ω
± ( 2 % of
mv +2 digit )
± ( 5% of
mv +5
digit )
3.00 k
Ω
...29.99 k
Ω
10
Ω
30.0 k
Ω
...299.9 k
Ω
100
Ω
Measuring time:
typ. 8 sec. with a fixed frequency
30 sec. max. with AFC and complete cycle of all
measuring frequencies
Additional error because of
probe-and
auxiliary earth
electrode resistance:
digits
R
R
R
E
S
H
5
%
10
25
.
1
)
2000
(
6
+
×
×
Ω
+
−
Measuring error of RH and
RS:
typ. 10 % of
H
s
E
R
R
R
+
+
Max. probe resistance:
≤
1 M
Ω
Max. auxiliary earth elec-
trode resistance:
≤
1 M
Ω
Automatic check if error is kept within the limits required by IEC61557-5.
If after a measurement of probe-, auxiliary earth electrode- and earthing resis-
tance, a measurement error of higher than 30 % is assumed because of the in-