The Fluke 115-NIST True RMS Digital Multimeter is a compact, ergonomically designed instrument for field service technicians and electrical troubleshooting applications. It delivers accurate True RMS voltage and current measurements on non-linear loads with a 6,000-count display and 33-segment bar graph updating 32 times per second. The large white LED backlight ensures visibility in low-light environments. Safety-rated for CAT III 600 V with 6 kV peak surge protection per IEC 61010-1, the 115-NIST includes a NIST traceable calibration certificate with full data and uncertainties, meeting requirements for certified measurement accuracy.
## Technical Specifications
• **Display:** 6,000-count digital with 33-segment bar graph (32 updates/second) and large white LED backlight
• **Voltage Measurement:** AC/DC to 600 V; AC specified from 1% to 100% of range
• **Current Measurement:** AC/DC to 10 A; 20 A overload capability for 30 seconds maximum
• **Resistance:** Up to 40 MΩ
• **Frequency:** AC voltage to 50 kHz; AC current to 5 kHz
• **Capacitance:** Up to 9,999 µF
• **Input Impedance:** >5 MΩ (AC/DC); ~3 kΩ (Auto-V LoZ mode)
• **Temperature Range:** Operating -10°C to +50°C; Storage -40°C to +60°C
• **Battery:** 9 V alkaline (NEDA 1604A/IEC 6LR61); 400 hours typical without backlight
• **Fuse:** 11 A, 1000 V FAST (Fluke PN 803293)
• **Dimensions:** 167 × 84 × 46 mm; 600 g
## Key Features
• True RMS measurement on non-linear loads
• Continuity testing with beeper (<20 Ω threshold); detects opens/shorts ≥500 µs
• Diode test function
• Min/Max/Average recording with elapsed time
• One-handed operation with integrated holster
• NIST traceable calibration certificate included with full data and uncertainties
## Typical Applications
• Field service and maintenance troubleshooting
• AC/DC circuit testing in CAT III 600 V environments
• Non-linear load analysis
• Component verification and diode testing
## Compatibility & Integration
• Compatible with optional ToolPak™ magnetic hanger
