721 Pressure Calibration Instruments

With the innovative, built-in electric pump, the Fluke 719 Electric Pressure Calibrator provides pressure calibration at your fingertips.

 

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

The 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

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

 

Specifications: 721 Pressure Calibration Instruments

Specifications 1-Year
Fluke-721-1601 Range Resolution Accuracy
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-721-1603 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-721-1605 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-721-1610 Low 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-721-1615 Range Resolution Accuracy
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-721-1630 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-721-1650 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-721-3601 Range Resolution Accuracy
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-721-3603 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-721-3605 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-721-3610 Range Resolution Accuracy
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-721-3615 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-721-3630 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-721-3650 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 +50°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
V DC measure 0 to 30 V DC 0.001 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 supply 24 V N/A 24 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: 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
 
Fluke 721-1605
Fluke 721-1605 Precision Pressure Calibrator
16 psig, 500 psig, dual sensor pressure calibrator
 
Fluke 721-1610
Fluke 721-1610 Precision Pressure Calibrator
16 psig, 1000 psig, dual sensor pressure calibrator
 
Fluke 721-1615
Fluke 721-1615 Precision Pressure Calibrator
16 psig, 1500 psig, dual sensor pressure calibrator
 
Fluke 721-1630
Fluke 721-1630 Precision Pressure Calibrator
16 psig, 3000 psig, dual sensor pressure calibrator
 
Fluke 721-1650
Fluke 721-1650 Precision Pressure Calibrator
16 psig, 5000 psig, dual sensor pressure calibrator
 
Fluke 721-3601
Fluke 721-3601 Precision Pressure Calibrator
36 psig, 100 psig, dual sensor pressure calibrator
 
Fluke 721-3603
Fluke 721-3603 Precision Pressure Calibrator
36 psig, 300 psig, dual sensor pressure calibrator
 
Fluke 721-3605
Fluke 721-3605 Precision Pressure Calibrator
36 psig, 500 psig, dual sensor pressure calibrator
 
Fluke 721-3610
Fluke 721-3610 Precision Pressure Calibrator
36 psig, 1000 psig, dual sensor pressure calibrator
 
Fluke 721-3615
Fluke 721-3615 Precision Pressure Calibrator
36 psig, 1500 psig, dual sensor pressure calibrator
 
Fluke 721-3630
Fluke 721-3630 Precision Pressure Calibrator
36 psig, 3000 psig, dual sensor pressure calibrator
 
Fluke 721-3650
Fluke 721-3650 Precision Pressure Calibrator
36 psig, 5000 psig, dual sensor pressure calibrator

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