Fluke 721-3630

The ideal tool for gas custody transfer applications is the Fluke 721 Precision Pressure Calibrator. With dual isolated pressure sensors, it allows you to take simultaneous static and differential pressure measurements with 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).

  • 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)
  • Measures 4 to 20 mA signals
  • Internal 24 V loop power supply can power a transmitter under test
  • Measure up to 30 V DC, check 24 V loop power supplies
  • Extend pressure measurement range with connection to external 700 series pressure modules (29 ranges)
  • Large backlit graphic display can display up to three inputs simultaneously
  • Store five instrument setups for recall and use

• 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

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• 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

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• Fluke 721 Precision Pressure Calibrator Data Sheet

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