The Fluke FS17XX current probe sets are for accurate non-intrusive measurement of ac currents and are used with Fluke 1735 and all Fluke 1740 products. The Fluke FS17XX IP65 can be used in more rugged environments than either the Fluke 1735 or 1745. Integrated memory for calibration data provides current ranges from 0.44A up to 3000A in a frequency range of 40Hz to 5kHz.