The Fluke 287 high-accuracy Logging Multimeter quickly records electrical performance and shows trend information. The Fluke 289 has additional features including a Lo-Pass filter, for accurate voltage and frequency measurements on adjustable speed motor drives and other electrically noisy equipment, as well as Lo-ohms and Lo-impedance measurement ranges. It diagnoses problems in electronics, plant automation, power distribution and electromechanical equipment.
The Fluke 287 and 289 feature a large 50,000-count, 3½ inch display that can show multiple measurement sets. The screen also features a white backlight, and displays context-sensitive on-board help screens. The instrument set-up is customisable to save time and increase productivity. Multiple save options and automatic time stamping allow convenient recall of field measurements. An interface ensures easy data transfer to a PC: optional FlukeView® Forms software enables users to document, store and analyse readings, and then convert them into professional reports.
Fluke’s new meters store up to 10,000 readings and both feature true-rms measurement for accurate readings on non-linear signals, both true-rms voltage and current. They have a 50mF capacitance range, and measure up to 10A (or 20A for 30s). Peak capture can record transients as fast as 250 microseconds. A relative mode removes test lead resistance from low ohms or capacitance measurements.
The Fluke 287 and 289 have an AC bandwidth of 100kHz, a 0.025% basic DC accuracy and include a temperature measurement function. The Fluke 289 has a two-terminal 50-ohm range with 1 milliohm resolution and 10mA source current, useful for measuring and comparing differences in motor winding or contact resistance. A LoZ Volts function eliminates ghost voltages, and can test for live power. The meter withstands hazardous 8,000V spikes caused by load switching and faults on industrial circuits, and complies with second edition IEC and ANSI electrical safety standards.