Fluke 5790A Automated AC Measurement Standard

Fluke 5790A AC Measurement Standard – Precision and Automation for High-End Calibration

The Fluke 5790A is a high-precision AC measurement standard engineered for advanced calibration labs and demanding metrology environments. Combining the exceptional accuracy of a thermal transfer standard with the simplicity and efficiency of a digital multimeter, the 5790A delivers reliable performance for absolute AC voltage measurements—featuring uncertainties as low as ±24 ppm (one year, 23 °C ± 5 °C).

Designed specifically to support and verify the performance of Fluke calibrators such as the 5700A, 5500A, and 5100 Series, as well as amplifiers like the 5725A and 5205A, the Fluke 5790A is the ideal solution for comprehensive AC voltage and wideband verification.

Key Features:

• Voltage Range: 700 µV to 1000 V

• Frequency Range: 10 Hz to 1 MHz (standard), extendable to 30 MHz with optional wideband capability

• Seamless Compatibility: Supports Fluke A40 and A40A current shunts for AC/DC current transfer measurements up to 20 A

• Automated Operation: Easily functions as a standalone unit or as a transfer standard with an external DC source, streamlining measurement processes

• User-Friendly Display: Vacuum fluorescent screen provides direct AC/DC difference readings without manual switching or calculations

Whether you're verifying precision calibrators or performing AC/DC transfer measurements, the Fluke 5790A offers the accuracy, automation, and versatility required for elite-level calibration tasks.

• Flexible Input Options:
  • 4 input terminals: 2 x Type-N connectors, 2 x five-way binding post sets
  • Supports AC and DC voltage on either main input
  • Wideband mode (up to 30 MHz) via second Type-N connector
  • Compatible with Fluke A40/A40A Current Shunts for AC/DC current up to 20 A
• Automatic Detection & Autoranging:
  • Automatically identifies AC or DC input
  • Auto-selects best voltage range; manual lock-in also available
• Easy-to-Read Display:
  • Bright vacuum fluorescent display shows input voltage, frequency, and AC/DC difference
  • Units displayed in ppm, %, volts, or ratio
  • LED indicators for active input selection
• Advanced Measurement Features:
  • Transfer mode stores reference voltage automatically
  • “View Ref” key for easy reference viewing
  • Supports reference averaging to minimize DC reversal errors
• Triggering Options:
  • Switch between continuous and single measurements
  • Perfect for sample readings at set intervals
• Built-In Protection & Reliability:
  • Robust 1200V input protection across all ranges
  • Self-contained calibration with step-by-step operator prompts
  • Compatible with Fluke 792A for reduced calibration equipment needs
• Seamless System Integration:
  • GPIB/IEEE-488 and RS-232C interfaces included
  • Supports full automation via MET/CAL® Plus Calibration Software