RUSKA 2470

Users Manual

I.Column 5 is the pressure required at the reference plane of the piston pressure gauge to produce the desired pressure at the reference plane of the device being calibrated. When the piston gauge is operating in the absolute mode, the Reference pressure, PR, is subtracted to obtain the differential pressure that the piston is required to generate.

J.The value of 1 + b1PA + b2 PA2 , which is used to determine the piston area at different system pressures, is recorded in column 6. For some pistons, b1 and/or b2 are equal to zero. Always observe the sign in front of b1 and b2 as found in the calibration report.

K.Column 7 is used to record Ae(t ) which is the area of the piston at pressure PA and at the expected temperature (t) .

L.Column 8, the weight load, is the force required on a piston of given area to produce a given pressure

F= PA Aet

⎝ ⎠

where:

F= Weight load or force on the piston

PA

=

Pressure as indicated in Column 5

Ae(t)

=

Effective piston area at the expected temperature (t) .

M.Column 9 is the apparent mass that is required to produce the force listed in Column 8.

N.Column 10 is a listing of the different masses to be loaded on the piston pressure gauge to create the pressure listed in Column 5. The masses which will be listed here are in addition to the tare components (piston, surface tension effects, bell jar reference pressure, etc.). The mass of the tare components must be subtracted from the mass shown in Column 9 before selection of the miscellaneous masses is started.

After subtracting the TARE mass from the Total Mass shown in Column 9, we must now subdivide/distribute the remaining required mass value among the available masses that will be loaded onto the Piston Table Assembly. It is most likely that there may be many combinations of available masses that could be used to yield the required Total Mass. However, it is strongly recommended that an orderly and sequential method by used. From the Mass Set Table (calibration report) first determine if the Sleeve Mass is required (which would be the case if the realization of the Total Mass value would require the use of the larger platter masses). If yes, then subtract its mass value from the Total Mass value which results in a new "remainder". From this "remainder" mass value, choose the next largest available mass value that may be subtracted. If the choice is from one of several "nominal" mass platters then choose the first one in the available sequence. Subtract this value from the "remainder", which now results in another new "remainder" mass value. Continue this process until the "remainder", which now results in another new "remainder" mass value. Continue this process until the "remainder" is smaller than the smallest available mass from the mass set. At every step, record the selected mass (its mass ID number) into Column 10.

A-4

Page 62
Image 62
Fluke 2470 specifications Ae t

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.

One of the standout features of the Fluke 2470 is its high-performance data acquisition capabilities. It supports multiple channel inputs, allowing users to monitor and log various electrical parameters simultaneously. This multi-channel functionality is essential for complex testing scenarios where multiple variables must be tracked in real time.

The Fluke 2470 utilizes advanced measurement technologies, including a high-resolution analog-to-digital converter that ensures superior measurement accuracy. This technology is crucial for applications that demand precise readings, such as research and development, quality assurance, and compliance testing.

Additionally, the device is equipped with a variety of input types, including voltage, current, and temperature, making it suitable for a wide array of testing applications. The flexibility in input compatibility allows users to customize their measurements according to specific project requirements.

Another significant characteristic of the Fluke 2470 is its user-friendly interface and software integration. The accompanying software enables users to configure measurements easily, set up logging intervals, and analyze data visually. This intuitive setup minimizes the learning curve for new users and enhances productivity.

Data storage is another critical feature of the Fluke 2470. It provides ample internal memory, allowing users to record extensive datasets over long periods without the need for continuous monitoring. The stored data can be easily exported for further analysis, making it ideal for long-term testing projects.

Moreover, the Fluke 2470 excels in terms of portability and ruggedness. Its compact design is built to withstand demanding environments, ensuring that it can deliver accurate data in the field just as reliably as in the lab.

In conclusion, the Fluke 2470 combines high-performance data acquisition, multi-channel capabilities, advanced measurement technologies, and user-friendly features, making it a top choice for professionals in a variety of fields. Its robust design ensures that it meets the demands of rigorous testing while providing accurate and reliable data, crucial for informed decision-making.