Fluke 5720A Multifunction Calibrator
Overview
Fluke 5720A is a high-accuracy multifunction calibrator built for calibration laboratories that need tighter uncertainty than a general multi-product calibrator provides, without stepping up to a full primary standards installation. It sources DC voltage to ±1100V at ±3.5 ppm of setting and AC voltage from 0.22 µV to 1100V across 10 Hz to 1 MHz, and can be factory-configured with the EP (Extended Performance) specification set for laboratories whose uncertainty budgets demand the tightest one-year accuracy the platform supports, plus the Option 03 wideband AC module that extends coverage to 300 µV–3.5V across frequencies up to 30 MHz.
Backed by genuine manufacturer documentation, Seven Star LLC proudly supplies the Fluke 5720A, including EP and Option 03 wideband configurations, to precision calibration laboratories across Oman and the GCC, backed by genuine factory support, technical application guidance, and Fluke’s IEEE-488/RS-232 automation ecosystem for labs running accredited procedures.
Operating Principle
The Fluke 5720A combines a precision internal reference with closed-loop feedback amplification to hold DC voltage accuracy to ±3.5 ppm of setting and resistance to 18 discrete values up to 100 MΩ, while the optional 5725A Amplifier extends current output from the base 2.2A to 11A for labs calibrating higher-current clamp meters and current shunts. The EP designation refers to Fluke’s Extended Performance specification, an alternative uncertainty table available on the same hardware platform for customers who commit to longer warm-up and stability conditions in exchange for a tighter published accuracy figure — it is a specification option, not a separate physical instrument.
Option 03, the wideband AC module, adds a dedicated high-frequency signal path that extends the calibrator’s AC voltage coverage from 300 µV to 3.5V across frequencies up to 30 MHz, well beyond the 1 MHz ceiling of the base AC function. This is what allows a single 5720A, when ordered with Option 03, to calibrate RF-adjacent AC voltmeters and wideband sensor heads that a standard-configuration 5720A cannot reach, closing a coverage gap that would otherwise require a separate RF calibration source.
Engineering Design of the Fluke 5720A
The Fluke 5720A is built in a rack-mountable Series II enclosure with a dual-line vacuum fluorescent display showing the sourced value and reference/error readout side by side, plus dedicated soft-key menus for phase control and setup that reduce the need to memorize deep menu structures during routine calibration runs. Output and sense terminals are grouped for four-wire connections, and a Guard terminal is provided for high-resistance and low-current measurement integrity.
On the automation side, the 5720A provides IEEE-488 (GPIB) and RS-232 interfaces as standard, plus compatibility with external amplifiers including the 5725A, 5205A, and 5215A for labs that need current or voltage compliance beyond the base unit’s native range. The optional Option 03 wideband module and EP specification set are both factory-installed or factory-selected configurations, so a laboratory can specify exactly the accuracy and bandwidth profile its accreditation scope requires when ordering rather than adding external converters later.
Key Features
The Fluke 5720A delivers tight-uncertainty voltage, current, and resistance sourcing with configurable performance options. Its principal capabilities include:
- Sources DC voltage to ±1100V at ±3.5 ppm of setting for calibrating precision reference-grade voltmeters.
- Delivers AC voltage from 0.22 µV to 1100V across 10 Hz to 1 MHz at ±45 ppm best accuracy.
- Generates resistance across 18 discrete values to 100 MΩ for precision ohmmeter verification.
- Extends current output to 11A and AC volt-hertz product with the optional 5725A Amplifier.
- Offers the EP (Extended Performance) specification set for laboratories requiring the tightest published one-year accuracy on the platform.
- Adds Option 03 wideband AC coverage from 300 µV to 3.5V across frequencies up to 30 MHz for RF-adjacent calibration work.
- Communicates via IEEE-488 (GPIB) and RS-232 for integration into accredited automated calibration procedures.
- Supports external amplifier compatibility (5725A, 5205A, 5215A) to extend range beyond the base unit’s native specification.
Industrial Applications
Precision calibration laboratories serving Oman’s oil and gas, aerospace-adjacent, and defense-related industrial sectors rely on the Fluke 5720A, particularly in its EP configuration, to calibrate reference-grade voltmeters and precision current sources where tighter uncertainty budgets are contractually required. Laboratories that order the Option 03 wideband module use the 5720A to close the RF calibration gap for wideband sensor heads and high-frequency AC voltmeters that a standard multi-product calibrator cannot reach, avoiding the cost of a dedicated RF signal generator for occasional wideband verification work. Industrial complexes and precision manufacturing facilities in the Sohar and Salalah free zones that maintain tight measurement uncertainty requirements for export-quality production depend on this class of high-accuracy calibrator to support their accredited calibration scope.
Working closely with plant engineers in the region, Seven Star LLC supplies the Fluke 5720A to precision calibration laboratories and industrial metrology groups throughout the Sultanate of Oman, Muscat, and the wider GCC, supporting aerospace maintenance facilities, defense-adjacent industrial contractors, and advanced manufacturing plants that require documented, tight-uncertainty electrical calibration. Seven Star LLC’s technical support helps laboratories in Sohar, Salalah, and Muscat specify and source a 5720A, with or without the EP specification and Option 03 wideband module, with lead time confirmed at quotation.
Technical Specifications
The table below summarizes the primary specifications of the Fluke 5720A relevant to precision calibration laboratory procurement.
| Parameter | Specification |
|---|---|
| Model | Fluke 5720A |
| DC Voltage | 0 to ±1100V, ±3.5 ppm of setting |
| AC Voltage | 0.22 µV to 1100V, 10 Hz–1 MHz, ±45 ppm |
| DC Current | 0 to ±2.2A (to 11A with 5725A) |
| AC Current | 9 µA to 2.2A, 10 Hz–10 kHz (11A with amplifier) |
| Resistance | 0 to 100 MΩ, 18 discrete values |
| EP (Extended Performance) Option | Tighter published one-year accuracy specification set |
| Option 03 (Wideband AC Module) | 300 µV to 3.5V, up to 30 MHz |
| External Amplifier Compatibility | 5725A, 5205A, 5215A |
| Interfaces | IEEE-488 (GPIB), RS-232 |
Request a Quote for Fluke 5720A Multifunction Calibrator
Seven Star LLC invites precision calibration laboratories and industrial metrology groups across Oman and the GCC to submit a formal RFQ for the Fluke 5720A Multifunction Calibrator, in standard, EP, or Option 03 wideband configuration. With fast quotation turnaround and technical support, Seven Star LLC supplies on request with lead time confirmed at quotation, provides the full technical datasheet on request, and connects buyers directly with its instrumentation division for configuration guidance — contact Seven Star LLC today to place an order or request a tailored quotation.
Browse the full Fluke range or see more Portable Test & Measurement products supplied by Seven Star LLC in Oman and the GCC.
- Instruction Manual Fluke 5700A/5720A Operator Manual Supplement Download
Fluke calibrators and test tools listed
The Fluke products on this page fall into three groups:- Process tools: the 754 documenting process calibrator with HART, 789 ProcessMeter, 721 dual sensor pressure calibrator and 729 automatic pressure calibrator
- Electrical test: the 376 FC true-RMS clamp meter with iFlex probe and the 1587 FC insulation multimeter
- Fluke Calibration bench standards: 5522A, 5502A, 5500A and 5080A multi-product calibrators, the 5720A multifunction calibrator, 8508A reference multimeter, 6100A electrical power standard and 9640A RF reference source
Where Fluke instruments are used
Fluke process calibrators are used for loop checks, transmitter calibration and valve tests in oil and gas, power and water plants. Clamp meters and insulation testers serve electrical maintenance on motors, switchgear and cables. The bench calibrators and reference multimeters are the working standards of electrical calibration laboratories in the GCC, where they calibrate multimeters, clamp meters, process tools and power analyzers.Ordering Fluke instruments: what we need
Send the exact model with its suffix, since versions differ. A Fluke 721, for example, is defined by its two pressure ranges, and a 729 by its maximum pressure. For bench calibrators, list the options you need, such as oscilloscope calibration or power quality options, the line voltage, and the type of calibration certificate you require from the manufacturer. For Fluke multimeters and clamp meters, add the kit contents wanted, such as probes, leads or cases.Browse Fluke products by category: Portable Test & Measurement.
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