Fluke 123 Industrial ScopeMeter

The Fluke 123 Industrial ScopeMeter is a handheld dual-channel instrument that combines a 20 MHz digital oscilloscope, true RMS dual 5,000-count digital multimeter, and paperless recorder into a single rugged device. Designed for field troubleshooting of industrial electrical and electromechanical equipment, it enables simultaneous waveform capture and meter measurements across machinery, instrumentation, power supplies, and control systems.

Technical Specifications Oscilloscope

Bandwidth: 20 MHz

Real-time sampling: 25 MS/s; equivalent sampling up to 1.25 GS/s

Dual analog inputs with AC/DC coupling

Vertical sensitivity: 5 mV/div to 500 V/div

8-bit vertical resolution

Record length: 512 samples per channel; 27,500 points per input in ScopeRecord mode

Trigger modes: Connect-and-View™, Free Run, Single Shot, Edge, Video, External (optional ITP120)

Glitch capture: 40 ns

26 automatic measurements

Reference waveform storage and comparison Digital Multimeter

Dual 5,000-count true RMS meters

DC voltage: 500 mV to 1,250 V; accuracy ±(0.5% + 5 counts)

AC voltage (RMS): 500 mV to 1,250 V; accuracy ±(2.5% + 15 counts) at 60 Hz to 20 kHz

Resistance, continuity, diode test

Current measurement (Amps)

Capacitance, dBV, dBm, crest factor

Temperature measurement (°C or °F) with optional probes

Touch Hold and ZeroSet functions Recorder

Dual-input TrendPlot for extended data trending

Event detection for intermittent signal capture

Recording duration: up to 16 days standard; up to 22 days in TrendPlot mode Display & Interface

4-inch (10.2 cm) monochrome LCD, 240 x 240 pixels

Adjustable contrast and brightness with backlight

Optically isolated RS-232 PC interface

USB connectivity via optional OC4USB adapter

FlukeView® Software compatibility for Windows Physical & Environmental

Dimensions: 232 x 115 x 50 mm

Weight: 1.2 kg (2.5 lb)

IP51 dust and water resistance

Operating temperature: 0°C to 50°C

Storage temperature: -20°C to +60°C

Operating altitude: 3,000 m

Key Features

Connect-and-View™ trigger captures signals without manual setup

Dual independent DMM channels for simultaneous voltage, resistance, and capacitance measurement

40 ns glitch capture detects transients in switching circuits

Up to 22-day recording enables long-term fault trending and intermittent event detection

Typical Applications

Variable frequency drive (VFD) diagnostics

Power supply and control system troubleshooting

Motor and bearing vibration analysis via waveform capture

Electrical equipment maintenance and failure analysis

Field preventive maintenance trending

Compatibility & Integration Connects to Windows-based systems via optionally available USB or RS-232 adapters. Stores and transfers waveforms and measurements to FlukeView® Software for documentation and offline analysis.