Hioki BT4560 - Page 120

114
Accuracy
Temperature measurement accuracy
Temperature
measurement
(BT4560 only)
±0.1°C
Temperature coefcient: ±0.01°C/°C (applied to the range of 0°C to 18°C, 28°C to 40°C)
Temperature
measurement
(BT4560+Z2005)
±0.5°C (Measured temperature: 10.0°C to 40.0°C)
±1.0°C (Measured temperature: -10.0°C to 9.9°C, 40.1°C to 60.0°C)
Example of accuracy calculation
(Rounded down to the displayed digit)
1
Impedance measurement accuracy
<Measurement condition 1>
Measurement range: 3 m
Ω
range, Measurement speed: SLOW, Frequency: 0.1 to 100 Hz, Measuring object:
R=1 m
Ω
, X=-0.5 m
Ω
R accuracy
± (0.004 × |1 m
Ω
| + 0.0017 × |-0.5 m
Ω
|) ±8 dgt.
= ± (0.004 × |1 m
Ω
| + 0.0017 × |-0.5 m
Ω
|) ±0.0008 m
Ω
= ± 0.00565 m
Ω
(Rounded down to the displayed digit ±0.0056 m
Ω
)
X accuracy
± (0.004 × |-0.5 m
Ω
| + 0.0017 × |1 m
Ω
|) ±8 dgt.
= ± (0.004 × |-0.5 m
Ω
| + 0.0017 × |1 m
Ω
|) ±0.0008 m
Ω
= ±0.00450 m
Ω
(Rounded down to the displayed digit ±0.0045 m
Ω
)
<Measurement condition 2>
Measurement range: 100 m
Ω
range, Measurement speed: FAST, Frequency: 0.1 to 1050 Hz, Measuring object:
Z=60 m
Ω
,
θ
=-20°
Z accuracy
±0.4% rdg. × 60 m
Ω
±60 dgt. × {|cos (-20°) |+|sin (-20°) |}
= ±0.240 m
Ω
±0.060 m
Ω
× (|0.940|+|-0.342|)
= ±0.3169 m
Ω
(Rounded down to the displayed digit ±0.316 m
Ω
)
θ
accuracy
±0.1° ±57.3° × 60 dgt. ÷ 60 m
Ω
× {|cos (-20°) |+|sin (-20°) |}
= ±0.1° ±57.3° × 0.060 m
Ω
÷ 60 m
Ω
× ( |0.940|+|-0.342|)
= ±0.1734° (Rounded down to the displayed digit ±0.173°)
<Measurement condition 3>
Measurement range: 3 m
Ω
range, Measurement speed: SLOW, Frequency: 0.1 to 100 Hz, Measuring object:
R=1 m
Ω
, X=-0.5 m
Ω
, Instrument’s ambient temperature: 15°C
R accuracy
± (0.004 × |1 m
Ω
|+0.0017 × |-0.5 m
Ω
|) ±8 dgt.
+{± (0.004 × |1 m
Ω
|+0.0017 × |-0.5 m
Ω
|) ±8 dgt.} × 0.1/°C× (|18°C - 15°C|)
= ±0.00565 m
Ω
+ (±0.00565 m
Ω
) × 0.1/°C × 3°C
= ±0.00735 m
Ω
(Rounded down to the displayed digit ±0.0073 m
Ω
)
X accuracy
± (0.004 × |-0.5 m
Ω
| + 0.0017 × |1 m
Ω
|) m
Ω
±8 dgt.
+ {± (0.004 × |-0.5 m
Ω
| + 0.0017 × |1 m
Ω
|) m
Ω
±8 dgt.} × 0.1/°C × (|18°C - 15°C|)
= ±0.0045 m
Ω
+ (±0.0045 m
Ω
) × 0.1/°C × 3°C
= ±0.00585 m
Ω
(Rounded down to the displayed digit ±0.0058 m
Ω
)
2
Voltage measurement accuracy
<Measurement condition 1>
Measurement range: arbitrary, Measurement speed: arbitrary, Frequency: arbitrary, Measuring object: R=arbitrary,
X=arbitrary, V=3.6 V