AESwaveAnswer
May 21, 2018 - 05:51 AM
Both the Fluke 1587 and the Fluke 88 meters have 10 Megohm input impedance, theoretically, both will perform equally regarding not loading circuits.
88 does RPM.
88 has Min/Max
88 has min/max of 250 microseconds (1587 Sample rate is 100 milliSeconds (10x per second)
88 has Duty Cycle.
The Fluke 1587 is 2 tools in one: meter and insulation meter.
1587 is True RMS.
1587 includes Low Pass Filter for AC signals: blocks unwanted voltages when measuring AC voltage and AC frequency to provide accurate measurements on inverters and variable-frequency motor drives.
1587 preforms Insulation tests.
Source: Staff
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