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Chapter 2 Specifications
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Accuracy is guaranteed for 1 year at following conditions.
(Temperature and humidity: 23 5 (73 5 ), 80%
RH or less)
Measurement
item
Measurement range Tolerances
Earthing
resistance
(Ω)
10 (0 to 11.5)
100 (0 to 115)
1000 (0 to 1150)
2.5%f.s.
Earth voltage (V) 30 (0 to 30) 3.0%f.s.
When using 2-pole method, applies 100 Ω and 1000 Ω only
Effect of temperature Within 0.1%/
at 0 to 40 (32 to 104 )
Effect of auxiliary
earth resistance
Within 5% when fluctuation is
0to5kΩ
Effect of earth
voltage
Within 2% at 0 to 5 V
Within 2% at 0 to 10 V
(at 50 or 60 Hz)
Within 5% at 0 to 3 V
(at DC, 16 2/3, 400 Hz)
Effect of power
voltage
Within specifications for 6 - 10 V DC
Effect of radiated
radio-frequency
electromagnetic field
At 3 V/m
Within +2.5%f.s. to -40%f.s.
(earthing resistance)
2.2 Measurement Range and
Tolerances
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