The Fluke 177/EFSP-NIST is a True RMS digital multimeter engineered for field service professionals and technicians requiring high-accuracy electrical measurements. It delivers True RMS AC and DC voltage and current measurements alongside resistance, frequency, and capacitance capabilities. The instrument combines a 6000-count digital display with an analog bar graph and backlight for enhanced visibility across diverse lighting environments.
## Technical Specifications
True RMS measurement capability spans AC and DC voltage to 1000 V and current to 10 A. Resolution reaches 0.1 mV for DC/AC voltage, 10 µA for current, 0.1 Ω for resistance, and 0.01 Hz for frequency. Basic accuracy is 0.09%. The multimeter measures resistance up to 50 MΩ and capacitance to 10,000 µF. Display delivers 6000 counts across 3.75 digits with integrated analog bar graph and backlight. Operating temperature range spans 14 to 122°F (-10 to 50°C); storage from -22 to 140°F (-30 to 60°C). Dimensions are 1.7 x 3.5 x 7.3 inches (43 x 90 x 185 mm), weighing 14.8 oz (420 g). Battery life extends approximately 200 hours typical with alkaline cells (without backlight).
## Key Features
• Dual ranging modes: manual and automatic selection
• MIN/MAX/AVG recording for statistical analysis
• Auto HOLD function to freeze readings
• Display HOLD capability
• Continuity and diode testing functions
• Closed-case calibration accessible through front panel
• NIST-traceable calibration supplied as ISO Certificate with full data and uncertainties
• Safety-rated CAT IV 600 V and CAT III 1000 V
## Typical Applications
Electrical troubleshooting, circuit verification, component characterization, and field service diagnostics. The dual safety ratings and True RMS capability suit both residential and commercial installation work.
## Included Accessories
Multimeter unit, test leads, 9V battery (pre-installed), user manual, and traceable calibration certificate with full data and uncertainties.
