True RMS Clamp Meter Fluke-31
Fluke 31/33 Clamp Meters
The Fluke 31 and 33 give accurate True-rms current measurements from 0.3 to 700A max.
Both models measure frequency, so you can use them to determine the output frequency of adjustable speed drives, to set the governor of an engine generator or to detect third harmonic currents (180 Hz) in the neutral of a 3-phase system. The Fluke 31 and 33 are built extra strong to withstand job site abuse.
Why True-RMS? Electrical professionals today need current clamps that are up to the challenge of accurately measuring harmonic currents caused by non-linear loads. Virtually all electronic equipment falls into this category - PCs, printers, HID lighting, adjustable speed drives, etc. Average-sensing meters can't do the job. They can produce readings that are 30%-50% low. Why? Harmonics cause distorted waveforms, and average-sensing meters can only accurately measure pure sine waves.
Fluke 31 Clamp Meters Features at a Glance:
- True-rms ac current measurement
- Auto/Manual Ranging
- Tapered jaws can handle 2 parallel 500 MCM cables, or a single cable, up to 38 mm (1.5") in diameter
- Combination Digital/Analogue display; Fast analogue bar graph shows surge currents
- Power-up self-test - verifies proper functioning and estimates battery life
- Clip-on holster
- Sleep Mode to preserve battery life
- CAT III 600V
Fluke 31/33 Clamp Meters Specifications
Infos as pdf-file
AC Current (RMS) Range: 0.3A to 400A (700A max sine wave), 0.3A to 40A
Resolution: 0.1A, 0.01A
Accuracy: ±(2%+2), ±(2%+20)
Frequency Range: 0.5 to 10kHz
Crest/Instantaneous Peak (Fluke 33 only) Range: 99.9A, 1000A
Resolution: 0.2A on 40A range, 2A on 400A range, 4A above 400A range
Accuracy for 33: ±(3%+3)
Crest Factor < 2.0 at full scale
(up to 5.0 at half scale)
Size L=231.5mm W=97mm D=43.9mm
Fluke 31 Current Clamp with Holster
Includes: C30 Holster, Operator's Manual, Quick Reference Guide, 9V battery (installed)
Only while stock lasts Replacement = Fluke 337
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