Fluke 721 Pressure Calibration Instruments

The Fluke 721 Precision Pressure Calibrator is an advanced tool purpose-built for the demanding requirements of gas custody transfer applications. With two isolated stainless steel pressure sensors, it allows technicians to measure both static and differential pressures simultaneously, making it an efficient choice for flow and transfer verification. The instrument can be configured with a low-pressure sensor (16 psi / 36 psi) paired with a choice of seven high-pressure ranges up to 5000 psi (345 bar), providing flexibility for various applications.

In addition to pressure, the Fluke 721 offers electrical and temperature measurement capabilities. It includes a Pt100 RTD input (probe optional) for accurate temperature monitoring, mA measurement up to 24 mA with 0.015% accuracy, and 24 V loop power for powering transmitters during calibration. The calibrator also measures up to 30 V DC, enabling complete process testing with a single device.

Designed for usability in the field, the 721 features a large backlit graphic display capable of showing up to three inputs simultaneously. Five instrument setups can be stored for quick recall, improving efficiency during repetitive tasks. Pressure measurement range can be further expanded with optional Fluke 750P pressure modules (covering 50 ranges), making the device a scalable solution for broad calibration needs.

Rugged and portable, the Fluke 721 is powered by four AA batteries with up to 35 hours of life, features IP40 ingress protection, and operates reliably in temperatures from -10 °C to +50 °C. Compact yet powerful, it delivers the precision, flexibility, and reliability process professionals require in custody transfer calibration.

Features

• Dual isolated stainless steel pressure sensors for simultaneous static and differential pressure measurement.
• High accuracy of 0.025% of full scale, suitable for custody transfer applications.
• Configurable with low-pressure sensors (16 psi or 36 psi) plus seven high-pressure ranges up to 5000 psi (345 bar).
• Pt100 RTD input for temperature measurement (optional probe required).
• Measures 0–24 mA signals with ±0.015% accuracy and provides a 24 V loop power supply.
• Measures up to 30 V DC for transmitter and power supply testing.
• Large backlit graphic display shows up to three inputs simultaneously.
• Stores five calibration setups for fast recall in repetitive tasks.
• Compatible with Fluke 750P pressure modules, extending measurement to 10,000 psi (700 bar).
• Rugged, portable design with >35 hours of battery life and IP40 protection for field use.

Includes

1. Fluke 721-1615
   Fluke 721-1615 Precision Pressure Calibrator 16 psig, 1500 psig, dual sensor pressure calibrator
   Soft case
   Four (4) AA batteries
   Manual
   Traceable calibration certificate
   Test leads
2. Fluke 721-1630
   Fluke 721-1630 Precision Pressure Calibrator 16 psig, 3000 psig, dual sensor pressure calibrator
   Soft case
   Four (4) AA batteries
   Manual
   Traceable calibration certificate
   Test leads
3. Fluke 721-1650
   Fluke 721-1650 Precision Pressure Calibrator16 psig, 5000 psig, dual sensor pressure calibrator
   Soft case
   Four (4) AA batteries
   Manual
   Traceable calibration certificate
   Test leads
4. Fluke 721-3615
   Fluke 721-3615 Precision Pressure Calibrator 36 psig, 1500 psig, dual sensor pressure calibrator
   Soft case
   Four (4) AA batteries
   Manual
   Traceable calibration certificate
   Test leads
5. Fluke 721-3630
   Fluke 721-3630 Precision Pressure Calibrator 36 psig, 3000 psig, dual sensor pressure calibrator
   Soft case
   Four (4) AA batteries
   Manual
   Traceable calibration certificate
   Test leads
6. Fluke 721-3650
   Fluke 721-3650 Precision Pressure Calibrator 36 psig, 5000 psig, dual sensor pressure calibrator
   Soft case
   Four (4) AA batteries
   Manual
   Traceable calibration certificate
   Test leads