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Used Fluke 721-3650 Pressure Calibrator for Sale

SKU: 721-3650

Regular price $2,025.00

*Basically brand new - used for demo/display*

The Fluke 721 is ideal for custody transfer applications in potentially explosive atmospheres. Optional intrinsically safe, pressure calibration, temperature measurement, with dual isolated pressure sensors that take simultaneous static and differential pressure measurements – all in a single tool.

The 721 can be configured by selecting either a 16 PSI (1.1 bar) or 36 psi (2.48 bar) low pressure sensor then add any of 7 high pressure ranges including 100, 300, 500, 1000, 1500, 3000 or 5000 psi (6.9, 20, 24.5, 69, 103.4, 200, 345 bar).

Key Features:

  • Optional Intrinsically Safe – IECEx and Atex Ex ia IIB T3 Gb (Zone 1) rated
  • Ideal for gas flow calibration (custody transfer) applications
  • Two isolated, stainless steel, pressure sensors with 0.025% accuracy
  • Pt100 RTD input for temperature measurement (probe optional)
  • Switch test on both pressure inputs
  • Pressure displayed in the user’s choice of 19 engineering units
  • Large backlit graphic display can display up to three inputs simultaneously
  • Store five instrument setups for recall and use


Pressure Sensor Ranges 36 PSIG, 5000 PSIG
Operating Temperature -10 °C to +45 °C
Battery (4) AA Alkaline
Battery Life >35 hours typical usage
Protection IP40
Dimensions 7.9” X 4.3” X 2.3” (20 cm X 11 cm X 5.8 cm)
Weight 0.53 kg (1 lb 3 oz)
Connections Two, 1-8 in NPT, 750P Series Pressure Module (721 Only), RTD Probe
Approvals ATEX Ex ia IIB T3 Gb, ATEX KEMA 10 ATEX 0168S, IECEx Ex ia IIB T3 Gb, IECEx II 2 G IECEx CSA 10.0013X