Fluke 721-3650

Fluke 721-3650 Dual Sensor Precision Pressure Calibrator.

The Fluke 721-3650 Dual Sensor Pressure Calibrator is engineered specifically for gas custody transfer and flow calibration applications where accuracy and stability are critical.
With dual isolated stainless-steel pressure sensors, it delivers 0.025% and 0.035% accuracy, providing confidence in every measurement.

This precision instrument supports HART communication, loop power testing, and external pressure module integration—making it one of the most versatile tools in the Fluke 721 Series.
Its large backlit display allows technicians to view up to three inputs simultaneously, simplifying multi-parameter diagnostics and data verification in the field.

Key Features

• Dual isolated stainless-steel sensors for high-accuracy pressure measurement (36 PSIG / 5000 PSIG)

• Ideal for gas custody transfer and flow calibration applications

• Built-in Pt100 RTD input for temperature measurement (optional probe)

• Measures 4–20 mA signals with integrated 24 V loop power supply

• Measure up to 30 V DC and check transmitter loop power supplies

• Extend measurement range using Fluke 700 Series Pressure Modules (supports 29 pressure ranges)

• Store and recall up to five instrument setups

• Large backlit graphic display with simultaneous three-input display

• Compact and lightweight design for field portability

• 3-year warranty for long-term reliability

Technical Specifications

Included Accessories

• Fluke 721-3650 Dual Sensor Pressure Calibrator (36 PSIG / 5000 PSIG)

• Soft carrying case

• Four (4) AA batteries

• Test leads

• User manual

• Traceable NIST calibration certificate

Applications

The Fluke 721-3650 is designed for:

• Gas custody transfer (flow measurement verification)

• Pipeline pressure calibration

• Field instrumentation testing

• Transmitter and flow computer verification

• Process calibration in oil & gas, chemical, and utility industries