28
Maximum Operating Error
Operating error (B) is an error obtained within the rated
operating conditions, and calculated with the intrinsic error
(A), which is an error of the instrument used, and the error (Ei)
due to variations.
B = ±(｜A｜+ 1.15 (E
1
2
+ E
2
2
+ E
3
2
+ E
4
2
+ E
5
2
+ E
7
2
+ E
8
2
))
A : Intrinsic error
E
1
: Variation due to changing the position
E
2
: Variation due to changing the supply voltage
E
3
: Variation due to changing the temperature
E
4
: Variation due to series interference voltage
E
5
: Variation due to resistance of the probes and
auxiliary earth electrode resistance
E
7
: Variation due to changing the system frequency
E
8
: Variation due to changing the system voltage
Range to keep the maximum operating error
Measurement range within which the maximum operating
error (±30%) applies.
20Ω range : 5 to 19.99 Ω
200Ω range : 20 to 199.9 Ω
2000Ω range : 200 to 1999 Ω
Battery life
Number of measurement: 3300 times or more (Measure 10
Ω for 5sec on 20Ω range and take a pause for 25sec/ using
manganese batteries)
Operating Temperature and Humidity
0 to 40℃ , relative humidity 85% or less (no condensation)
Storage Temperature and Humidity
-20 to 60℃ , relative humidity 75% or less (no condensation)
Power Source
9V DC: Six (6) 1.5 V manganese batteries (R6P, AA-size) or
Six (6) 1.5 V alkaline batteries (LR6, AA-size)
Overload Protection
Earth voltage ranges: 300V AC (1 minute)
Earth resistance ranges : 280V AC (10 seconds) (between E
and P, E and C terminals)
Insulation Resistance
5MΩ or more at 500V between the electrical circuit and the
housing case
Summary of Contents for EY200
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