Fluke 721 Precision Pressure Calibrator

Pressure calibration and temperature measurement for custody transfer applications

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.

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

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

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