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Fluke 721EX Intrinsically Safe Pressure Calibrator (Choice of Model)

  • Intrinsically safe for hazardous areas (IECEx & ATEX certified).
  • Dual stainless steel sensors with 0.025% accuracy.
  • 16 PSI or 36 PSI low pressure sensors with a choice of high pressure ranges.
  • Optional Pt100 RTD input and 4 to 20 mA signal measurement capability.
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Express Delivery & Calibration

Express Delivery is currently unavailable for customers wishing to add calibration to their New Goods order. For more information, visit our Delivery Information page. 

£2,678.85 (ex VAT)

£3,214.62 (inc VAT)

Earn 2678 – 2678 points

Usually Ships In 6 to 13 Business Days
Fluke 721EX Intrinsically Safe Loop & Pressure Calibrator

The Fluke 721Ex Loop & Pressure Calibrator stands out as a versatile and precise tool, certified for safety with ATEX and IECEx standards. It offers flexibility in configuration, allowing users to choose between a 16 psi (1.1 bar) or 36 psi (2.48 bar) low-pressure sensor, and then add any of seven high-pressure ranges, including 100, 300, 500, 1000, 1500, 3000, or 5000 psi (6.9, 20, 24.5, 69, 103.4, 200, 345 bar).

This calibrator features two isolated, stainless steel, pressure sensors with an impressive 0.025% accuracy. Furthermore, it includes a switch test function for both pressure inputs. Users benefit from the convenience of displaying pressure in 19 different engineering units, such as psi, bar, mbar, kPa, and more, catering to a wide range of industry standards.

Additionally, the Fluke 721Ex enhances precision in temperature measurement with an optional RTD probe and measures 4 to 20 mA signals, ensuring broad application. The large backlit graphic display is another standout feature, capable of showing up to three inputs simultaneously for enhanced readability.

To further ease the user experience, this calibrator allows the storage of five instrument setups for quick recall and use, streamlining the calibration process. Whether for industrial or laboratory applications, the Fluke 721Ex is an essential tool for professionals seeking accuracy and versatility in pressure calibration.

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Fluke 721EX Intrinsically Safe Pressure Calibrator

The Fluke 721EX Intrinsically Safe Pressure Calibrator offers reliable precision for gas flow calibration in critical environments, such as custody transfer applications. With dual isolated stainless steel sensors and an impressive accuracy of 0.025%, this device ensures precise pressure measurement every time. Configurable to suit your specific requirements, it allows the selection of either a 16 PSI (1.1 bar) or 36 PSI (2.48 bar) low-pressure sensor, which can be paired with a high-pressure sensor ranging from 300 to 5000 PSI (20 to 345 bar).

Advanced Calibration Features for Versatile Use

This calibrator is designed to meet IECEx and ATEX Ex ia IIB T3 Gb (Zone 1) safety standards, ensuring it’s intrinsically safe for use in hazardous areas. Its large backlit display can show up to three simultaneous inputs, making it easy to monitor multiple parameters. With user-defined engineering units and switch testing capability on both pressure inputs, the Fluke 721EX provides flexibility and ease of use. For additional versatility, an optional Pt100 RTD probe can be connected for temperature measurement, while 4 to 20 mA signal measurements enhance its capabilities.

The Fluke 721EX is IP40 rated, designed for durability, and offers up to 35 hours of continuous operation powered by four AA batteries. Users can save and recall up to five instrument setups, streamlining repeated tasks and reducing setup time. Its portability and intuitive design make it an ideal tool for technicians in the field, where accurate and safe pressure calibration is essential.

With its range of models, user-friendly features, and robust safety certifications, the Fluke 721EX Intrinsically Safe Pressure Calibrator is a versatile and highly reliable tool, whether you’re working in gas flow calibration or other high-demand environments.

Key Features
  • Intrinsically Safe: IECEx and Atex Ex ia IIB T3 Gb certified for Zone 1.
  • Ideal for gas flow calibration in custody transfer.
  • Two 0.025% accurate stainless steel pressure sensors.
  • RTD Pt100 temperature measurement input (probe optional).
  • Switch test for both pressure inputs.
  • Pressure display in 19 selectable engineering units.
  • Large backlit display shows up to three inputs simultaneously.
  • Stores five instrument setups for easy recall.
Technical Specifications 
ModelDescriptionRange Sensor 1Resolution sensor 1Accuracy sensor 1Range Sensor 2Resolution sensor 2Accuracy sensor 2
Fluke-721Ex-1603Dual Sensor Pressure Calibrator,

16 PSIG, 300 PSIG

-14 psi to +16 psi

-0.97 bar to 1.1 bar

0.001 psi

0.0001 bar

0.025% of full scale-12 psi to + 300 psi

-0.83 bar to 20 bar

0.01 psi

0.001 bar

0.025% of full scale
Fluke-721Ex-1615Dual Sensor Pressure Calibrator,

16 PSIG, 1500 PSIG

-14 psi to +16 psi

-0.97 bar to 1.1 bar

0.001 psi

0.0001 bar

0.025% of full scale0 psi to + 1500 psi

0 bar to 103.4 bar

0.1 psi

0.001 bar

0.025% of full scale
Fluke-721Ex-1630Dual Sensor Pressure Calibrator,

16 PSIG, 1500 PSIG

-14 psi to +16 psi

-0.97 bar to 1.1 bar

0.001 psi

0.0001 bar

0.025% of full scale0 psi to + 3000 psi

0 bar to 200 bar

0.1 psi

0.01 bar

0.025% of full scale
Fluke-721Ex-3615Dual Sensor Pressure Calibrator,

36 PSIG, 1500 PSIG

-14 psi to +36 psi

-0.97 bar to 2.48 bar

0.001 psi

0.0001 bar

0.025% of full scale0 psi to + 1500 psi

0.00 bar to 103.4 bar

0.1 psi

0.01 bar

0.025% of full scale
Fluke-721Ex-3630Dual Sensor Pressure Calibrator,

36 PSIG, 3000 PSIG

-14 psi to +36 psi

-0.97 bar to 2.48 bar

0.001 psi

0.0001 bar

0.025% of full scale0 psi to + 3000 psi

0.00 bar to 200 bar

0.1 psi

0.01 bar

0.025% of full scale
Fluke-721Ex-3650Dual Sensor Pressure Calibrator,

36 PSIG, 5000 PSIG

-14 psi to +36 psi

-0.97 bar to 2.48 bar

0.001 psi

0.0001 bar

0.025% of full scale0 psi to + 5000 psi

0.00 bar to 345 bar

0.1 psi

0.01 bar

0.035% of full scale
What’s Included
  • Fluke 721EX Intrinsically Safe Pressure Calibrator
  • 1 x Soft case
  • 4 x AA batteries
  • 1 x Manual
  • 1 x Traceable calibration certificate
  • 1 x Test leads

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