Fluke 8502A – 6.5 digit DMM with RMS AC option

The Fluke 8502A is a 6.5-digit digital multimeter engineered for precision DC voltage measurement and ratio applications in laboratory, calibration, and systems integration environments. Microprocessor control and modular construction enable flexible configuration tailored to specific measurement requirements. DC voltage accuracy reaches 6 ppm over a 1-year interval across five ranges. The instrument supports optional AC voltage modules—an averaging option for sinusoidal waveforms and a true RMS module for sinusoidal and non-sinusoidal content—plus resistance and current measurement through plug-in converters and shunt options.

– Technical Specifications

Resolution and Accuracy
• 6.5-digit display resolution
• DC voltage accuracy: 6 ppm (1-year)

Measurement Ranges and Functions
• Standard: DC volts (5 ranges), ratio (external DC reference for voltage, current, or resistance)
• Optional AC volts: Averaging module or true RMS module for sinusoidal and non-sinusoidal waveforms
• Optional: Resistance (8 ranges via Ohms Converter), current (5 ranges via Current Shunts)

Performance
• Reading rate: 7.5 readings/second (60 Hz) or 6.25 readings/second (50 Hz) in fast mode; 1.25 readings/second in slow mode
• System speed: Up to 500 readings/second with parallel interface option
• Overrange: 212%
• Warm-up time: 2 hours to rated accuracy
• Digital filtering with averaged samples per reading

Environmental
• Operating temperature: 0°C to 50°C
• Non-operating temperature: -40°C to 70°C
• Humidity: 80% RH (0–18°C), 75% RH (18–40°C), 60% RH (40–50°C)
• Mechanical: MIL-T-28800 Class 5 style E shock and vibration compliance

Protection and Noise Rejection
• DC/AC volts: +1200 V DC; 1200 V peak AC to 60 Hz; 1400 V peak AC above 60 Hz
• Current (fused): 1.5 A with ±140 V AC to 60 Hz or 200 V peak AC above 60 Hz
• Normal mode rejection: 100 dB (DC, 1X, 2X line frequency); up to 100 dB at 60 Hz slow
• Common mode rejection: 120 dB (DC to 60 Hz, 1 kΩ unbalance); 100 dB at 60 Hz (1 kΩ unbalance)

– Key Features

• Microprocessor-controlled measurement with bus architecture
• Modular design for expanded functionality
• High overload protection on all input terminals
• Line-frequency noise rejection optimized for 50 Hz and 60 Hz operation

– Typical Applications

• Electronic component and circuit testing
• Equipment calibration and verification
• Research and laboratory measurement
• Systems integration and troubleshooting

– Compatibility & Integration

Parallel interface option (-07A) enables high-speed data acquisition. True RMS AC module (-09A) requires concurrent current-measuring option installation.