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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 |