Fluke 2470 specifications Functional Testing of Piston/Cylinder Assemblies

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RUSKA 2470

Users Manual

Being forewarned of the hazards, the technician should wipe the bench and all instrument surfaces in the vicinity of the Piston Pressure Gauge before starting disassembly operations. A wad of Kim-Wipes slightly wetted with a solvent, such as high grade alcohol or acetone will help pick up particles that invariably accumulate near the gauge.

A clean space should be prepared on a work bench. Cover this space with paper towels so that cleaned parts will not be contaminated.

REMOVE ALL PRESSURE FROM THE PISTON PRESSURE GAUGE BY VENTING THE PRESSURE HOUSING TO THE ATMOSPHERE.

Unscrew the knurled retaining cap from the top of the housing and lay it aside on a clean Kim-Wipe.

Functional Testing of Piston/Cylinder Assemblies

The piston/cylinder assembly should be tested for cleanliness and proper operation before and after each use. Perform the following steps to test for proper operation and to show that the assembly is clean.

1.Install the piston/cylinder assembly into the DWG base and secure the retaining cap.

2.Pressure the base until the piston alone is floating near mid-stroke.

3.With a gentle stroke of the finger, rotate the piston while also causing it to bounce in the cylinder. After a few strokes allow the piston to coast on its own. Although the rotation of the mid and high ranges may be lengthy, the free rotation of the low range may last only a brief few seconds. At any rate, all ranges should rotate freely with no sudden changes in rotation speed and should coast to a gradual stop. The last bit of rotation just before stopping is often the most useful in judging if the piston is functioning correctly.

4.If the piston does not perform as indicated above, it should be cleaned and retested. If the subsequent cleaning does not improve the results, the assembly may be damaged and should not be used until a qualified inspection is made as to the source of the failure.

Cleaning the Low Range Piston/Cylinder Assembly

Cleaning supplies (refer to Figure 6-1) consist of:

•Solvent, such as high grade alcohol or acetone

•Low-lint paper wipers, such as Kimberly Clark, Kimwipes number 34155

•Cleaning tool number 2460-56

•Wooden applicator sticks, such as Puritan number 807-12

•Cashmere Bouquet brand hand soap

•Bottle brush, such as RUSKA part number 7-682

•Size 0 rubber stopper, such as RUSKA part number 81-536

•Warm tap water

1.Prepare a clean work area near a running tap water source.

2.Prepare several sets of folded wipers as shown in Figures 6-2 through 6-4. Two wipers can be folded together for wiping the outside of the piston and cylinder. A single folded wiper can be inserted into, then wrapped around the cleaning tool for cleaning the bore of the cylinder.

3.Disassemble the piston/cylinder assembly.

4.Pre-clean the piston and cylinder using solvent soaked wipers.

6-2

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Contents Ruska Limited Warranty and Limitation of Liability Table of Contents Appendices List of Tables Ruska List of Figures Ruska How to Contact Fluke Safety InformationIntroduction Compressed GasSymbols Used in this Manual Heavy WeightsLubricants and Seals Oxygen CompatibilitySpecifications Low Range PistonAccuracy Humidity RangeGeneral Piston Pressure Gauge Considerations Types of Piston Pressure GaugesControlled Clearance Cylinder Calculations Measurement of Pressure with the Piston Pressure GaugeElastic Distortion of the Cylinder GravityBuoyant Effect of the Air Temperature Reference Plane of MeasurementsReference Plane Determination Is the density of the test media Crossfloating BibliographyGeneral Piston Pressure Gauge Considerations Ruska Description General InformationDescription of the Mass Set Description of the Gauge BaseDescription Ruska Installation IntroductionAlways remove the thermometer before shipping the gauge base Installation Ruska Precautions OperationLow Range Piston Assembly GeneralOperation 24-580 Bearing 2460-4-25 2460-5-6 Handling the Low Range Piston and Cylinder Step Low Range Piston and Cylinder Showing O-Ring Groove Mid Range Piston Assembly Section View, Mid Range Piston/Cylinder Thrust Cylinder Assembly Spacer Bearing 2460-70-2 2460-70-3 High Range Piston Assembly 11. Retaining Nut and Bearing12. Section View, High Range Piston/Cylinder 13. Parts Required for High Range Piston Operation Establishing Pressure Gauge PressuresAutomating the Calculations and Data Storage 16. Float PositionMaintenance of the Gauge LeaksRuska Piston / Cylinder Cleaning Instructions General Information and PreparationFunctional Testing of Piston/Cylinder Assemblies Cleaning the Low Range Piston/Cylinder AssemblyPiston / Cylinder Cleaning Instructions Preparations for Cleaning the Low Range Cylinder Preparing the Low Range Cleaning Tool Step Materials for Cleaning the Mid Range Piston/Cylinder Mid Range Piston/CylinderPreparing the Mid Range Cleaning Tool Cleaning the High Range Piston/Cylinder Assembly Materials for Cleaning the High Range Piston CylinderCleaning the High Range Piston/Cylinder Assembly Gmq33.bmp 13. Cleaning the High Range Cylinder 14. Drying the High Range Cylinder Explanation of Pressure Calculation Worksheet Temp. Coef. x actual temperature expected temperature For English UnitsK2 = 1/ g1 1 − ρa / ρb For SI UnitsAe t Explanation of Pressure Calculation Worksheet a Ruska Date Ruska Expected Temperature, t Ruska Equation A-4 Air Density Equation A-4 Air DensityNitrogen Density English Units 0 to 1000 Psig Nitrogen Density English Units 1,000 to 15,000 PsigNitrogen Density SI Units 0 to 6.9 MPa Nitrogen Density SI Units 6.9 MPa to 100 MPaZero Air Density SI Units 0 MPa to 20.7 MPa Helium Density SI Units 0 to 6.9 MPaConversion Factors Table B-1. Conversion Factors To Convert From Multiply ByRuska Glossary GlossaryDUT +INF, -INF Pressure Factor Sink Rate Ruska

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.
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