Multi-Meter (DM-9960) Auto-Ranging 1000V

Lutron Digital Multimeter (DM-9960) CAT III 1000V

The Lutron DM-9960 is an auto-ranging digital multimeter designed for professional electrical, industrial, and service applications. It features a 4000-count A/D converter, large backlit LCD with bar graph, and comprehensive measurement capabilities including voltage, current, resistance, capacitance, frequency, temperature, diode testing, continuity, and transistor hFE. Rated to IEC 61010 CAT III 1000 V, it includes overload protection across most ranges and an isolated RS-232 output for computer interfacing.

• Meets IEC 1010 CAT III 1000 V safety requirements.
• Large backlit display: 65 mm × 48 mm LCD with bar graph.
• Multi-function measurement: DCV, ACV, DCA, ACA, resistance, capacitance, frequency, temperature, diode, continuity, and hFE.
• Special modes: Max/Min, Peak, Relative measurement, and Data Hold.
• Auto-range capability: With manual range override.
• Temperature measurement: °C/°F thermometer (probe optional).
• VAHz mode: Measures frequency during ACV or ACA measurement.
• 4000-count resolution: High accuracy for electrical troubleshooting.
• Current input protection: Built-in fuses for 10 A, mA, and µA ranges.
• 10 MΩ input impedance: Reduces circuit loading on voltage measurements.
• Isolated RS-232 output: Photo-coupled for PC data transfer.
• Durable ABS housing: Lightweight and impact-resistant for field use.

General Specifications

• Display: 65 mm × 48 mm large LCD with bar graph.
• Measurement functions: DCV, ACV, DCA, ACA, resistance, capacitance, frequency, temperature, diode test, continuity beeper, hFE.
• A/D count: 4000 counts.
• Range selection: Auto-range with manual selection.
• Special functions: Max/Min recall, Peak value, Data Hold, Relative measurement.
• Sampling time: Approx. 0.5–1 second.
• Operating temperature: 0°C to 50°C (32°F to 122°F).
• Operating humidity: Max 80% RH.
• Power supply: Two 1.5 V UM-4/AAA batteries.
• Power consumption: Approx. 2.5 mA DC.
• Data output: RS-232 serial interface, photo-coupled.
• Dimensions: 185 × 88 × 40 mm (7.3" × 3.5" × 1.6").
• Weight: 350 g (0.77 lb).

Electrical Specifications (Condensed)

• Voltage: DCV up to 1000 V; ACV up to 1000 V (40–500 Hz).
• Current: DCA/ACA up to 10 A (fused); µA and mA precision ranges included.
• Resistance: 400 Ω to 40 MΩ.
• Capacitance: 4 nF to 40 mF.
• Frequency: 4 kHz to 40 MHz.
• Temperature: −20°C to 750°C (optional probe).
• Diode test: 0–2 V forward voltage measurement.
• Continuity beeper: Sounds below 20 Ω.

Included Items

• Red and black test leads, 1 pair.
• 0.5 A spare fuse, 1 pc.
• Instruction manual.

Optional Accessories

• ACA/DCA clamp adapters.
• Tachometer adapter.
• Pressure adapter.
• Humidity adapter.
• Light adapter.
• EMF adapter.
• Sound level adapter.
• Anemometer adapter.
• High-voltage probe (HV-40).
• Temperature probe (TP-11).
• RS-232 cable (UPCB-06).
• Soft carrying case (CA-05A).