Explanation of "Pressure Calculation Worksheet" A

Introduction

O.Column 11, the remainder from Column 10, is the mass that must be placed on the piston pressure gauge to complete the mass needed to set the desired pressure. This "remainder", recorded in Column 11, is realized with the Trim Mass set provided with all RUSKA Mass Sets. The RUSKA supplied Trim Mass Sets are defined as Class 3, Type 1 (per ASTM E617, formerly Class S1 per NBS Cir. 547).

These fractional masses should also be used to adjust the mass load for piston pressure gauge operating temperatures that differ from the expected temperature (t). These fractional masses could also be used to adjust the mass load for the piston pressure gauge if the reference plane of the device being calibrated is at a different elevation than planned in the original head correction.

P.In the English system, the remainder can be recorded in pounds in Column 11, and in grams in Column 12. The conversion factor to convert pound mass to grams is 453.59237 g/lbm.

Q.Column 13 is used to calculate a temperature coefficient. This temperature coefficient is used to correct for any piston temperature variation from the expected temperature value that was used to calculate the mass loads for the various pressure points in the worksheet. See item B above.

A-5

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Fluke 2470 specifications Explanation of Pressure Calculation Worksheet a
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2470 specifications

The Fluke 2470 is a versatile and highly regarded data acquisition system designed for a wide range of applications in electrical testing and measurement. Known for its precision and reliability, the Fluke 2470 is particularly popular among professionals who require accurate data for analysis and reporting.

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