• Other Fluke companies:
  • Fluke
  • Fluke Biomedical
  • Fluke Networks
  • Fluke Process Instruments
See more Fluke brands
Accelix Amprobe Beha-Amprobe Comark Emaint Landauer Pacific Laser Systems Pomona RaySafe Schad
Home
Precision, Performance, Confidence.
Fluke Calibration: Asia
  • Register
  • Log in
  • Contact Us

AS - English [Change]

 

Mixing fluids in a high-pressure calibration without fear of contamination

Contamination Prevention System for Pressure Calibration

Pressure calibration involves applying the same pressure to a reference device (standard), and the device you wish to calibrate (device under test or DUT).  The pressure is transmitted to the two devices across some medium, perhaps nitrogen gas or oil.  This seems simple enough, but what happens if the two devices don’t operate in the same medium, or if contamination is transferred through the medium? This can cause problems such as damaged devices, bad calibrations, and contaminated processes.  The good news is, there are solutions.

Contamination coming from the standard or the medium itself
Most low-pressure calibrations are performed using nitrogen or a similar clean, dry air as a medium.  This works well and causes few problems.  The only challenge is to ensure that the proper grade of nitrogen is acquired.  There are a couple of scenarios where the medium can cause a problem.

One potential issue is when the medium is not compatible with the DUT or the process where the DUT will be used.  For example, a deadweight tester is designed to be used with a specific type of oil.  Converting to a different type of oil can cause measurement errors or even damage to the piston-cylinder.  Unfortunately, the oil used in the calibration is often not the same oil used in the process where the DUT is then used.  This cross-contamination can cause problems.  One solution is to use gas, like nitrogen, as the medium.  This can be done by using a pneumatic high-pressure controller, like the Fluke Calibration 8270A or 8370A.  This requires a supply of high-pressure gas, which can be provided using a standard nitrogen cylinder and the available gas booster kit.

This leads to the next question.  If the DUT has oil in it, how do you keep it from contaminating the gas pressure controller? This is where the optional Contamination Prevention System (CPS) comes in.  The CPS protects the pressure controller from contamination coming from the DUT.  When controlling up in pressure, the gas media goes from the controller, through the CPS, to the DUT.  When controlling down in pressure, the now contaminated gas media is exhausted through the CPS and never travels back to the controller.  In addition, the CPS acts as a gravity trap with a filter to capture any additional contaminates.

A pneumatic pressure controller combined with the CPS can be used to calibrate almost any pressure device, regardless of what media the device normally operates in.  It eliminates messy oil from your pressure calibration laboratory and is easier to use than manual devices like deadweight testers.

Other articles that you may find interesting

High-pressure calibration and characterization in a production process

Performing high-pressure calibration

 

Tim Francis, Business Unit Manager, Pressure & Flow, at Fluke Calibration
Posted by Tim Francis on Sep 04, 2018
Tim Francis is the Business Unit Manager for Pressure and Flow at Fluke Calibration. He began his career in pressure metrology in 2002 at Ruska, where he was an Applications Engineer. He joined Fluke Calibration in 2010 following the  Ruska acquisition. Tim holds a bachelor’s degree in... Full Bio
  • Login or register to post comments
  • Printer-friendly version »
  • Home
  • Products
    • New Products
    • Electrical Calibration
      • Electrical Standards
      • Electrical Calibrators
      • Bench Multimeters
      • Electrical Calibration Software
    • RF Calibration
      • RF Reference Sources
      • RF Calibration Accessories
      • RF Calibration Software
    • Data Acquisition and Test Equipment
      • Bench Multimeters
      • Data Acquisition
      • Data Acquisition Software
    • Temperature Calibration
      • ITS-90 Temperature Standards
        • ITS-90 Fixed-point cells
        • Standard Platinum Resistance Thermometers
        • Maintenance Apparatus
        • Liquid Nitrogen Comparison Calibrator
        • Resistance Bridges
        • Standard Resistors
      • Calibration Baths
        • Compact Calibration Baths
        • Standard Calibration Baths
        • Special Application Baths
        • Bath Accessories
        • Bath Controllers
        • Bath Fluids
      • Industrial Calibrators
        • Field Metrology Wells
        • Metrology Wells
        • Handheld Calibrators
        • Field Dry-Block Calibrators
        • Micro Baths
        • Infrared Calibrators
        • Thermocouple Furnaces
        • Dual Block Dry-Well
        • Zero-point Dry-Well
      • Probes / Sensors
        • Platinum Resistance Thermometers (PRTs)
        • Thermistors
        • Thermocouples
      • Digital Thermometer Readouts
      • Multifunction Calibrators
      • Temperature Calibration Software
    • Humidity Calibration
      • Humidity Generators
      • Humidity Data Loggers and Monitors
    • Pressure Calibration
      • Piston Gauges
        • NMI Piston Gauges
        • Absolute Piston Gauges
        • High Pressure Pneumatic Piston Gauges
        • Hydraulic Piston Gauges
        • Piston Gauge Accessories
      • Automated Pressure Controller / Calibrators
        • Low Pressure Controllers / Calibrators
        • Pneumatic Pressure Controllers / Calibrators
        • High Pressure Pneumatic Controller / Calibrators
        • Hydraulic Controller / Calibrators
      • Pressure Monitors
        • Low Pressure Monitors
        • Digital Pressure Gauges
        • Reference Pressure Monitors
      • Deadweight Testers
        • Pneumatic Deadweight Testers
        • Oil Deadweight Testers
        • Water Deadweight Testers
        • High-Pressure Hydraulic Deadweight Testers
        • Deadweight Tester Accessories
      • Manual Pressure Calibration
        • Pressure Calibrators
        • Pneumatic Pressure Control
        • Hydraulic Pressure Comparators / Pumps
      • Handheld Pressure Calibrators
      • Air Data Calibration
      • Environmental Monitors
      • Pressure Calibration Accessories
      • Pressure Calibration Custom Systems
      • Pressure Calibration Software
    • Flow Calibration
      • Gas Flow Standards
      • Gas Flow Accessories
      • GFS Primary Gravimetric Flow Standard
      • Flow Calibration Software
    • Process Calibration Tools
      • Temperature Calibrators
        • Handheld Temperature Calibrators
        • Dry-Block Calibrators and Micro-Baths
        • Precision Digital Thermometers
        • Temperature Probes
        • Infrared Calibrators
        • Hygro Thermometer with Data Logging
      • Pressure Calibrators
        • Digital Pressure Calibrators
        • Handheld Pressure Calibrators
        • Deadweight Testers
        • Precision Digital Pressure Gauges
        • Calibration Hand Pumps
      • Multifunction Calibrators
      • mA Loop Calibrators
      • Process Calibration Software
    • Calibration Software
      • MET/CAL® Software
      • MET/CAL® Support
      • Asset Management Software
      • Temperature Calibration Software
      • Pressure Calibration Software
      • Flow Calibration Software
      • Mechanical / Dimensional Calibration Software
    • Service and Support
    • All Calibration Instruments
  • Purchase Info
    • Where to Buy
    • Request a Quote
    • Request a Demo
    • Request a Sales Consultation
    • Certified Pre-Owned Equipment
    • General Services Administration (GSA)
    • Financing Program
    • National Stock Numbers (NSNs)
    • Payment Options and Tax Info
  • News
    • Press Releases
    • Promotions
    • Industry Links
    • Metrology Salary Survey
  • Training and Events
    • Conferences and Exhibitions
    • Training Courses
    • User Group Meetings
    • Web Seminars
      • Live Seminars
      • On-Demand Seminars
  • Literature and Education
    • Education Hub
    • About Calibration
    • Articles and Education
    • Product Literature
    • Product Manuals (User Guides)
    • Videos and Virtual Demos
    • Blog
  • Service and Support
    • Service Request (RMA)
    • Service Plans
    • Technical Support
    • Knowledge Base
    • Accreditations
    • Authorized Service Centers
    • Calibration Certificates
    • Community Forum
    • My MET/SUPPORT
      • Activate
      • Procedures
      • Software
      • Technical Bulletins
      • Priority Support
      • Manuals
    • Product Manuals (User Guides)
    • Safety Data Sheets (SDS)
    • Safety, Service, and Product Notices
    • Software Downloads
    • Tools
      • PT100 Calculator
      • ITS-90 Reference Function Calculator
      • Thermocouple Table Voltage Calculator
      • Thermocouple Voltage to Temperature Calculator
  • About Us
    • Contact Us
    • Visit Us
    • Employment
    • Fluke Calibration
      • Hart Scientific Temperature Calibration
      • DH Instruments Pressure and Flow Calibration
      • Pressurements Pressure Calibration
      • Ruska Pressure Calibration
    • Fluke Companies
    • Integrity and Compliance
    • Frequently Asked Questions
Home|Blog|Mixing fluids in a high-pressure calibration without fear of contamination
©1995-2023 Fluke Corporation
             

Secondary menu

  • Disclaimer
  • Privacy Statement
  • Terms of Use
  • Terms of Sale