The Tenma 72-7730A is a handheld True RMS digital multimeter engineered for electrical and electronic testing across industrial, field service, and laboratory environments. This 4.5-digit (20,000-count) instrument delivers precise AC/DC voltage, current, resistance, capacitance, frequency, and temperature measurements with auto-ranging simplicity. The 100 kHz bandwidth supports transient analysis, while integrated duty cycle measurement (10% to 90%), diode testing, and continuity detection expand troubleshooting capability. USB connectivity enables PC-based data logging of up to 100 records, making it suitable for continuous monitoring and documentation workflows.
Technical Specifications
Measurement Ranges & Accuracy
• DC Voltage: 200 mV to 1 kV; ±(0.05%+5)
• AC Voltage: 2 V to 1 kV; ±(0.6%+40)
• DC Current: 200 µA to 10 A; ±(0.15%+20)
• AC Current: 200 µA to 10 A; ±(0.8%+15)
• Resistance: 200 Ω to 20 MΩ; ±(0.4%+20)
• Capacitance: 20 nF to 20 mF; ±(1.2%+20)
• Frequency: 20 Hz to 200 Hz; ±(0.1%+15)
• Temperature: −40°C to +1000°C; ±(1%+30)
• Duty Cycle: ±(1%+30)
• 4–20 mA Loop: 0–100%
Input Protection & Safety
• Input Impedance: 2.5 GΩ (200 mV range); 10 MΩ (other ranges)
• Safety Rating: CAT III 1000 V, CAT IV 600 V
• Power: 9 V battery (6F22)
– Key Features
• True RMS measurement for AC components on distorted waveforms
• Auto-ranging with manual override
• LCD display with full icon set and analogue bar graph
• Data Hold, Max/Min capture, and Relative Mode
• Current measurement alarm and low battery indication
• Auto power-off function extends battery life
• Diode test and continuity buzzer for circuit diagnostics
– Typical Applications
Field troubleshooting of power distribution and control circuits; preventive maintenance on industrial motor and drive systems; HVAC service diagnostics; telecommunications equipment testing; laboratory characterization of passive components.
– Compatibility & Integration
USB interface connects to Windows 8 compatible PC software for data acquisition and trend analysis.
