Fluke 721 Pressure Calibration Instruments

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  • Fluke 721 Precision Pressure Calibrator - 1
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Key features

  • Precision pressure calibrator with dual isolated sensors for gas flow calibration (custody transfer) applications
  • Features two isolated, stainless steel, pressure sensors with 0.025% accuracy
  • Includes Pt100 RTD input for temperature measurement (probe optional)
  • Measures 4 to 20 mA signals
  • Provides internal 24 V loop power supply to power a transmitter under test
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Product overview: Fluke 721 Pressure Calibration Instruments

Fluke 721 Precision Pressure Calibrator provides pressure calibration and temperature measurement for custody transfer applications

The Fluke 721 Precision Pressure Calibrator is the ideal tool for gas custody transfer applications. It features dual isolated pressure sensors to allow you to take simultaneous static and differential pressure measurements with a single tool. And it can be configured by selecting either a 16 psi (1.1 bar) or 36 psi (2.48 bar) low pressure sensor then adding any of seven high pressure ranges: 100, 300, 500, 1000, 1500, 3000 or 5000 psi (6.9, 20, 24.5, 69, 103.4, 200, 345 bar).

Other useful features:

  • Measures up to 30 V DC, checks 24 V loop power supplies
  • Extends pressure measurement range with connection to external 750P
  • 750 series pressure modules (50 ranges)
  • Provides a large backlit graphic display that can show up to three inputs simultaneously
  • Stores five instrument setups for recall

Specifications: Fluke 721 Pressure Calibration Instruments

Specifications 1-Year
Fluke-721-1601RangeResolutionAccuracy
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 +100 psi,
-0.83 bar to 6.9 bar		0.01 psi,
0.0001 bar		0.025% of full scale
Fluke-721-1603Low 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-721-1605Low 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-721-1610Low pressure sensor
-14 psi to +16psi,
-0.97 bar to 1.1 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-721-1615RangeResolutionAccuracy
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 +1500 psi,
0.00 bar to 103.4 bar		0.1 psi,
0.001 bar		0.025% of full scale
Fluke-721-1630Low 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-721-1650Low 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-721-3601RangeResolutionAccuracy
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 to +100 psi,
-0.83 bar to 6.9 bar		.01 psi,
0.0001 bar		0.025% of full scale
Fluke-721-3603Low 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-721-3605Low 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-721-3610RangeResolutionAccuracy
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 +1000 psi,
0.00 bar to 69 bar		0.1 psi,
0.001 bar		0.025% of full scale
Fluke-721-3615Low 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-721-3630Low 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-721-3650Low 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 +50°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
V DC measure0 to 30 V DC0.001 V±0.015% of rdg
±0.002 V
Temperature measure (RTD/ Ohms)1-40°C to 150°C
(-40°F to 302°F)		0.01°C, 0.01°F±0.015% of rdg
±0.02 ohms
±0.1°C (±0.2°F)
±0.25°C (±0.45°F) combined uncertainty when using 720 RTD probe accessory
Loop power supply24 VN/A24 mA @ 24 V
1. Temperature measurement requires optional Fluke-720RTD Pt-100 RTD probe available as an accessory
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

Models: Fluke 721 Pressure Calibration Instruments

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

Includes:

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

Includes:

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

Includes:

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

Includes:

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

Includes:

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

Includes:

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

Includes:

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

Includes:

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

Includes:

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

Includes:

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

Includes:

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

Includes:

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

Includes:

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

Includes:

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