RoadTest: Multicomp Pro - Fundamentals of Multimeters
Author: ravi kondeti
Creation date:
Evaluation Type: Test Equipment
Did you receive all parts the manufacturer stated would be included in the package?: True
What other parts do you consider comparable to this product?: fluke 317
What were the biggest problems encountered?: NA
Detailed Review:
Test setup:
Power supply: BK precision 9205
Current probe: keysight 1146B
Picoscope 4000A was used for recording the data
System description:
the system is an inverter with an RL load connected. Inverter fundamental frequency is kept at 50Hz,200, and 1000Hz, and current probe data is compared with the clamp meter. point of interest was only with the current measurement, current through phase leg A was monitored. the assumption is taken that current is sinusoidal for comparison of values
Fundamental Frequency: 50Hz
Current measured through the current probe
observed peak:86A
clamp meter measurement
clamp meter shows 62A RMS (87.7A peak)
Fundamental Frequency: 200Hz
Current measured through the current probe
observed peak:33.4A
clamp meter measurement
clamp meter shows 22.7A RMS (32.1A peak)
Fundamental Frequency: 1000Hz
Current measured through the current probe
observed peak:26.2A
clamp meter measurement
clamp meter shows 17.8A RMS (25.17A peak)
DC source current measurement
Current measured through the current probe
clamp meter measurement
Voltage measurement
Conclusion: the higher fundamental frequency of the inverter clamp meter prior (fluke) had a bandwidth drop and measurement was not read after 1200Hz. MP60607 was giving comparable value even at 1000Hz (400Hz was specified on the datasheet)
USING CLAMP METER: (link will be added soon)
