Hioki MEMORY HiLOGGER LR8450 Instruction Manual page 336

Digital filters
Power supply
frequency
filter setting
60 Hz
50 Hz
-2. Accuracy specifications
Accuracy guarantee
conditions
Measurement range, maximum resolution, measurable range, and measurement accuracy figures
Measurement
Voltage
Temperature
characteristics
Normal-mode
rejection ratio
Common-mode
rejection ratio
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The digital filter cutoff frequency is automatically set as described in the following table
according to the data refresh interval and power supply frequency filter setting:
1 ms 2 ms 5 ms 10 ms 20 ms 50 ms 100 ms 200 ms 500 ms
50 k 5.4 k 2.6 k 1.0 k
50 k 5.4 k 2.6 k 1.0 k
Accuracy guarantee
duration
Accuracy guarantee
duration after
adjustment made by
Hioki
Accuracy guarantee
temperature and
humidity range
Warm-up time
The conditions have been specified with zero-adjustment finished and cutoff frequency
set to 5 Hz, 10 Hz, 50 Hz, or 60 Hz (see cutoff frequency table in "Digital filters" [p. 3 31]).
Type Range
target
– 100 mV f.s.
200 mV f.s.
1 V f.s.
2 V f.s.
10 V f.s.
20 V f.s.
100 V f.s.
1-5 V f.s.
Add (measurement accuracy × 0.1) per degree to the measurement accuracy figure.
50 dB or greater
(With 50 Hz input, power supply frequency filter of 50 Hz, and a data refresh
interval of 5 s)
(With 60 Hz input, power supply frequency filter of 60 Hz, and a data refresh
interval of 5 s)
Signal source resistance of 100
100 dB or greater
(With 50 Hz/60 Hz input and a data refresh interval of 1 ms)
140 dB or greater
(With 50 Hz input, power supply frequency filter of 50 Hz, and a data refresh
interval of 5 s in the 100 mV f.s. range)
(With 60 Hz input, power supply frequency filter of 60 Hz, and a data refresh
interval of 5 s in the 100 mV f.s. range)
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Data refresh interval
400 200 100 60
400 200 100 50
1 year
1 year
23°C ±5°C (73°F ±9°F), 80% RH or less
At least 30 min. after connecting to the LR8450/LR8450-01
Memory HiLogger and turning on the instrument
Maximum
Measurable range
resolution
5 μV −100 mV to 100 mV
10 μV −200 mV to 200 mV
50 μV −1 V to 1 V
100 μV −2 V to 2 V
500 μV −10 V to 10 V
1 mV −20 V to 20 V
5 mV −100 V to 100 V
500 μV 1 V to 5 V
Ω
or less
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1 s 2 s 5 s 10 s
60 10 5 5 5
50 10 5 5 5
Unit: Hz
Measurement
accuracy
±100 μV
±200 μV
±1 mV
±2 mV
±10 mV
±20 mV
±100 mV
±10 mV
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331