FLUKE 721Ex Intrinsically Safe Precision Pressure Calibrator

FLUKE 721Ex Features

The 721Ex 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).

  • Intrinsically Safe  – IECEx and Atex Ex ia IIB T3 Gb (Zone 1)
  • 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

    Fluke 721Ex Datasheet

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    FLUKE 721Ex Intrinsically Safe Precision Pressure Calibrator

    Pressure calibration and temperature measurement for custody transfer applications

    The ideal tool for gas custody transfer applications in potentially explosive atmospheres is the Fluke 721Ex Precision Pressure Calibrator.

    With dual isolated pressure sensors, it allows you to take simultaneous static and differential pressure measurements with a single tool.

    Fluke 721Ex Precision Pressure Calibrator Specifications:

    Specifications 1-Year
    Fluke-721Ex-1601 Low pressure sensor
    Range Resolution Accuracy
    -14 psi to +16 psi,
    -0.97 bar to 1.1 bar
    0.001 psi,
    0.0001 bar
    0.025% of full scale
    High pressure sensor
    -12 psi to +100 psi,
    -0.83 bar to 6.9 bar
    0.01 psi,
    0.0001 bar
    0.025% of full scale
    Fluke-721Ex-1603 Low pressure sensor
    -14 psi to +16 psi,
    -0.97 bar to 1.1 bar
    0.001 psi,
    0.0001 bar
    0.025% of full scale
    High pressure sensor
    -12 psi to +300 psi,
    -0.83 bar to 20 bar
    0.01 psi,
    0.001 bar
    0.025% of full scale
    Fluke-721Ex-1605 Low pressure sensor
    -14 psi to +16 psi,
    -0.97 bar to 1.1 bar
    0.001 psi,
    0.0001 bar
    0.025% of full scale
    High pressure sensor
    -12 psi to +500 psi,
    -0.83 bar to 34.5 bar
    0.01 psi,
    0.001 bar
    0.025% of full scale
    Fluke-721Ex-1610 Low pressure sensor
    0 psi to +1000 psi,
    0.00 bar to 69 bar
    0.1 psi,
    0.001 bar
    0.025% of full scale
    High pressure sensor
    -12 psi to +500 psi,
    -0.83 bar to 34.5 bar
    0.01 psi,
    0.001 bar
    0.025% of full scale
    Fluke-721Ex-1615 Low pressure sensor
    Range Resolution Accuracy
    -14 psi to +16 psi,
    -0.97 bar to 1.1 bar
    0.001 psi,
    0.0001 bar
    0.025% of full scale
    High pressure sensor
    0 psi to +1500 psi,
    0.00 bar to 103.4 bar
    0.1 psi,
    0.001 bar
    0.025% of full scale
    Fluke-721Ex-1630 Low pressure sensor
    -14 psi to +16 psi,
    -0.97 bar to 1.1 bar
    0.001 psi,
    0.0001 bar
    0.025% of full scale
    High pressure sensor
    0 psi to +3000 psi,
    0.00 bar to 200 bar
    0.1 psi,
    0.01 bar
    0.025% of full scale
    Fluke-721Ex-1650 Low pressure sensor
    -14 psi to +16 psi,
    -0.97 bar to 1.1 bar
    0.001 psi,
    0.0001 bar
    0.025% of full scale
    High pressure sensor
    0 psi to +5000 psi,
    0.00 bar to 345 bar
    0.1 psi,
    0.01 bar
    0.035% of full scale
    Fluke-721Ex-3601 Low pressure sensor
    Range Resolution Accuracy
    -14 psi to +36 psi,
    -0.97 bar to 2.48 bar
    0.001 psi,
    0.0001 bar
    0.025% of full scale
    High pressure sensor
    -12 to +100 psi,
    -0.83 bar to 6.9 bar
    .01 psi,
    0.0001 bar
    0.025% of full scale
    Fluke-721Ex-3603 Low pressure sensor
    -14 psi to +36 psi,
    -0.97 bar to 2.48 bar
    0.001 psi,
    0.0001 bar
    0.025% of full scale
    High pressure sensor
    -12 psi to +300 psi,
    -0.83 bar to 20 bar
    0.01 psi,
    0.001 bar
    0.025% of full scale
    Fluke-721Ex-3605 Low pressure sensor
    -14 psi to +36 psi,
    -0.97 bar to 2.48 bar
    0.001 psi,
    0.0001 bar
    0.025% of full scale
    High pressure sensor
    -12 psi to +500 psi,
    -0.83 bar to 34.5 bar
    0.01 psi,
    0.001 bar
    0.025% of full scale
    Fluke-721Ex-3610 Low pressure sensor
    Range Resolution Accuracy
    -14 psi to +36 psi,
    -0.97 bar to 2.48 bar
    0.001 psi,
    0.0001 bar
    0.025% of full scale
    High pressure sensor
    0 psi to +1000 psi,
    0.00 bar to 69 bar
    0.1 psi,
    0.001 bar
    0.025% of full scale
    Fluke-721Ex-3615 Low pressure sensor
    -14 psi to +36 psi,
    -0.97 bar to 2.48 bar
    0.001 psi,
    0.0001 bar
    0.025% of full scale
    High pressure sensor
    0 psi to +1500 psi,
    0.00 bar to 103.4 bar
    0.1 psi,
    0.01 bar
    0.025% of full scale
    Fluke-721Ex-3630 Low pressure sensor
    -14 psi to +36 psi,
    -0.97 bar to 2.48 bar
    0.001 psi,
    0.0001 bar
    0.025% of full scale
    High pressure sensor
    0 psi to +3000 psi,
    0.00 bar to 200 bar
    0.1 psi,
    0.01 bar
    0.025% of full scale
    Fluke-721Ex-3650 Low pressure sensor
    -14 psi to +36 psi,
    -0.97 bar to 2.48 bar
    0.001 psi,
    0.0001 bar
    0.025% of full scale
    High pressure sensor
    0 psi to +5000 psi,
    0.00 bar to 345 bar
    0.1 psi,
    0.01 bar
    0.035% of full scale
    General Specifications
    Instrument setup recall Last used on power-up
    Environmental Operating temperature -10°C to +45°C
    Storage temperature (without batteries) -20°C to +60°C
    Altitude 2,000 m
    Ingress protection IP-40
    Power requirements 6.0 V DC
    Battery life >35 hours, typical usage
    Batteries required (4) Standard AA cells
    Dimensions (H x W x D) 7.9 x 4.3 x 2.3 in (20 x 11 x 5.8 cm)
    Weight 03539 kg (1 lb 3 oz)
    Connectors/ports pressure Two, 1/8 in NPT, 700P Series Pressure Module; RTD Probe
    Electrical and Temperature Measurement 1-Year
    Function Range Resolution Accuracy
    mA measure 0 to 24 mA 0.001 mA ±0.015% of rdg
    ±0.002mA
    Temperature Effect
    No effect on accuracy on all functions from 15°C to 35°C
    Add ±0.002% F.S./°C for temps outside of 15°C to 35°C
    Available Pressure Engineering Units
    psi, bar, mbar, kPa, kgcm2, cmH2O @ 4°C, cmH2O @ 20°C, mH2O @ 4°C, mH2O @ 20°C, inH2O @ 4°C, inH2O @ 20°C, inH2O @ 60°F, mmHg @ 0°C, inHg @ 0°C, ftH2O @ 4°C, ftH2O @ 20°C, ftH2O @ 60°F
    Available Pressure Engineering Units
    ATEX Ex ia IIB T3 Gb (Ta= -10… +45 °C)
    KEMA 10 ATEX 0168X
    IECEx Ex ia IIB T3 Gb (Ta= -10…+45 °C)
    II 2 G IECEx CSA 10.0013X