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