Fluke 721Ex Precision Pressure Calibrator | Fluke
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Fluke 721Ex Precision Pressure Calibrator

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  • Fluke 721Ex Precision Pressure Calibrator
  • Fluke 721Ex Precision Pressure Calibrator

Key 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 (721Ex version only) – 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
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Product overview: Fluke 721Ex 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.

Specifications: Fluke 721Ex Precision Pressure Calibrator

Specifications 1-Year
Fluke-721Ex-1601Low pressure sensor
RangeResolutionAccuracy
-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-1603Low 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-1605Low 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-1610Low 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-1615Low pressure sensor
RangeResolutionAccuracy
-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-1630Low 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-1650Low 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-3601Low pressure sensor
RangeResolutionAccuracy
-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-3603Low 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-3605Low 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-3610Low pressure sensor
RangeResolutionAccuracy
-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-3615Low 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-3630Low 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-3650Low 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 recallLast used on power-up
EnvironmentalOperating temperature -10°C to +45°C
Storage temperature (without batteries) -20°C to +60°C
Altitude2,000 m
Ingress protectionIP-40
Power requirements6.0 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)
Weight03539 kg (1 lb 3 oz)
Connectors/ports pressureTwo, 1/8 in NPT, 700P Series Pressure Module; RTD Probe
Electrical and Temperature Measurement 1-Year
FunctionRangeResolutionAccuracy
mA measure0 to 24 mA0.001 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
ATEXEx ia IIB T3 Gb (Ta= -10… +45 °C)
KEMA 10 ATEX 0168X
IECExEx ia IIB T3 Gb (Ta= -10…+45 °C)
II 2 G IECEx CSA 10.0013X

Models: Fluke 721Ex Precision Pressure Calibrator

Fluke 721Ex-1601
Fluke 721Ex-1601 Precision Pressure Calibrator
16 psig, 100 psig, dual sensor pressure calibrator
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Includes:

  • Soft case
  • Four (4) AA batteries
  • Manual
  • Traceable calibration certificate
  • Test leads
Fluke 721Ex-1603
Fluke 721Ex-1603 Precision Pressure Calibrator
16 psig, 300 psig, dual sensor pressure calibrator
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Includes:

  • Soft case
  • Four (4) AA batteries
  • Manual
  • Traceable calibration certificate
  • Test leads
Fluke 721Ex-1605
Fluke 721Ex-1605 Precision Pressure Calibrator
16 psig, 500 psig, dual sensor pressure calibrator
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Includes:

  • Soft case
  • Four (4) AA batteries
  • Manual
  • Traceable calibration certificate
  • Test leads
Fluke 721Ex-1610
Fluke 721Ex-1610 Precision Pressure Calibrator
16 psig, 1000 psig, dual sensor pressure calibrator
Buy it

Includes:

  • Soft case
  • Four (4) AA batteries
  • Manual
  • Traceable calibration certificate
  • Test leads
Fluke 721Ex-1615
Fluke 721Ex-1615 Precision Pressure Calibrator
16 psig, 1500 psig, dual sensor pressure calibrator
Buy it

Includes:

  • Soft case
  • Four (4) AA batteries
  • Manual
  • Traceable calibration certificate
  • Test leads
Fluke 721Ex-1630
Fluke 721Ex-1630 Precision Pressure Calibrator
16 psig, 3000 psig, dual sensor pressure calibrator
Buy it

Includes:

  • Soft case
  • Four (4) AA batteries
  • Manual
  • Traceable calibration certificate
  • Test leads
Fluke 721Ex-1650
Fluke 721Ex-1650 Precision Pressure Calibrator
16 psig, 5000 psig, dual sensor pressure calibrator
Buy it

Includes:

  • Soft case
  • Four (4) AA batteries
  • Manual
  • Traceable calibration certificate
  • Test leads
Fluke 721Ex-3601
Fluke 721Ex-3601 Precision Pressure Calibrator
36 psig, 100 psig, dual sensor pressure calibrator
Buy it

Includes:

  • Soft case
  • Four (4) AA batteries
  • Manual
  • Traceable calibration certificate
  • Test leads
Fluke 721Ex-3603
Fluke 721Ex-3603 Precision Pressure Calibrator
36 psig, 300 psig, dual sensor pressure calibrator
Buy it

Includes:

  • Soft case
  • Four (4) AA batteries
  • Manual
  • Traceable calibration certificate
  • Test leads
Fluke 721Ex-3605
Fluke 721Ex-3605 Precision Pressure Calibrator
36 psig, 500 psig, dual sensor pressure calibrator
Buy it

Includes:

  • Soft case
  • Four (4) AA batteries
  • Manual
  • Traceable calibration certificate
  • Test leads
Fluke 721Ex-3610
Fluke 721Ex-3610 Precision Pressure Calibrator
36 psig, 1000 psig, dual sensor pressure calibrator
Buy it

Includes:

  • Soft case
  • Four (4) AA batteries
  • Manual
  • Traceable calibration certificate
  • Test leads
Fluke 721Ex-3615
Fluke 721Ex-3615 Precision Pressure Calibrator
36 psig, 1500 psig, dual sensor pressure calibrator
Buy it

Includes:

  • Soft case
  • Four (4) AA batteries
  • Manual
  • Traceable calibration certificate
  • Test leads
Fluke 721Ex-3630
Fluke 721Ex-3630 Precision Pressure Calibrator
36 psig, 3000 psig, dual sensor pressure calibrator
Buy it

Includes:

  • Soft case
  • Four (4) AA batteries
  • Manual
  • Traceable calibration certificate
  • Test leads
Fluke 721Ex-3650
Fluke 721Ex-3650 Precision Pressure Calibrator
36 psig, 5000 psig, dual sensor pressure calibrator
Buy it

Includes:

  • Soft case
  • Four (4) AA batteries
  • Manual
  • Traceable calibration certificate
  • Test leads
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