Fluke 437-II - Page 145

Specifications
Electrical Measurements27
27-7
Flicker Measurement Range Resolution Accuracy
Plt, Pst, Pst (1min) Pinst 0.00 … 20.00 0.01 ± 5%
Unbalance Measurement Range Resolution Accuracy
Volts % 0.0 … 20.0% 0.1% ± 0.1%
Amps % 0.0 … 20.0% 0.1% ± 1%
Mains Signaling Measurement Range Resolution Accuracy
Threshold levels Threshold, limits and signaling duration is programable for two signaling
frequencies
Signaling frequency 60 … 3000 Hz 0.1 Hz
Relative V% 0% .. 100% 0.1% ± 0.4%
Absolute V3s (3 second
average)
0.0 … 1000 V 0.1 V ± 5% of nominal voltage
Trend Recording
Method Automatically records min, max and average values over time for all readings
being displayed for the 3 phases and neutral simultaneously
Samping 5 readings/s continuous sampling per channel, 100/120
1
readings/s for ½ cycle
values and Pinst
Recording time 1 hr up to 1 year, user selectable (default setting 7 days)
Averaging time 0.25 s to 2 hrs, user selectable (default 1s) 10 minutes when using Monitor
mode
Memory Data is stored on SD-card (8 GB incuded. 32 GB max)
Events: Fluke 434-II
Fluke 435-II/437-II
Tabulated in event list
Tabulated in event list, including 50/60
1
waveform cycles and 7.5s ½ cycle rms
Voltage and Amps trend
MEASUREMENT METHOD
Vrms, Arms 10/12
1
contiguous non overlapping intervals using 500/416
1
samples per cycle
in accordance with IEC 61000-4-30.
Vpeak, Apeak Absolute highest sample value within 10/12
1
cycle interval with 40 µs sample
resolution.
V Crest Factor Measures ratio between the Vpeak and Vrms.
A Crest Factor Measures ratio between the Apeak and Arms.
Hz Measured every 10 sec in accordance with IEC61000-4-30.
Vrms½, Arms½ value is measured over 1 cycle, commencing at a fundamental zero crossing,
and refreshed each half-cycle. This technique is independent for each channel
in accordance with IEC 61000-4-30.
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Fluke-Direct.ca