What is the accuracy/uncertainty of the device to be tested?

The first step to selecting the right pressure calibration product is to understand the specifications of the device under test (DUT). Following is a summary of which products are used to calibrate different categories of DUTs, based on total one-year measurement uncertainty specifications (assumes a 4:1 test uncertainty ratio is desired).

Total uncertainty specification of the device to be tested	Calibration standards typically used for this application	Typical total 1-yr uncertainty of reference standard
±0.08% and greater Pressure measurement devices: gauges, sensors…	Fluke handheld process calibration tools	0.025% to 0.25%
	PPC4E wide-range gas pressure controller/calibrator	0.02%
	E-DWT hydraulic electronic deadweight tester	0.02%
±0.03% to 0.075% Medium performance sensors and calibration transfer standards	PPC and 7000 pressure controller/calibrators	0.008% to 0.015%
	RPM and 7050 reference pressure monitors	0.008% to 0.015%
	P3000 deadweight testers and M3800 deadweight testers	0.008% to 0.015%
	NOTE: These models are also often used for calibration of the pressure measurement devices listed above
±0.025% and less High performance sensors and calibration standards	PG7000, FPG8601, and 2400 piston gauges	<0.001% to 0.01%
	NOTE: These models are also often used for calibration of the pressure measurement devices and calibration standards listed above

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What is the accuracy/uncertainty of the device to be tested?

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