PK Tester, RK , & HK Deadweight Tester Upgrades

PK Tester Calibration and Upgrade

Pneumatic input driven Deadweight Calibration Units. Repairs and Upgrades for RK , HK, and PK testers.


Dead Weight Tester Repair / Upgrade

Like new again

JM can repair broken units and upgrade your older units. PK Tester Upgrades: Why Pay New? You can have just as good as new, with an upgraded “original style” PK Tester. With an upgrade you get a new hard shell case, 3 way vent valve, external connectors for easy hook-up, and a rubber weight insert. The lid can also be closed during operation. View the upgraded PK testers datasheet. Deadweight tester repair and upgrade

JM can also upgrade the weight carrier to a 5″ H2O stainless steel carrier. 1000″ H2O upgrade kit for PK2 testers. With the “fracing” in shale type wells, you get a temporary high gas output and then it levels off. To be within Beta Ratio (25% to 75%) would mean you would have to replace the orifice meter run after 6 months to a year, so by extending the differential pressure range to 1000″H2O (100% beta), you can run temporarily above range until the well levels off. We are selling these upgrade range kits to Enable Midstream (Oklahoma) and other areas. This is available for both Ametek PK & PKII Testers. View the PDF here
Upgrade deadweight carrier
You Have Options with JM Test!
BUY an Upgraded PK Tester
UPGRADE Your PK Tester
BUY a Custom Weight Set
“Original Style” PKm Tester with Upgrades
“Black Box” PK Upgrade
Custom Machined Weight Set
  • New stainless steel weight set
  • New hard shell case
  • Closed lid operation
  • Easy hookup: External connections
  • Rubber weight insert
  • 5″ stainless steel weight carrier
  • 1 year certification and warranty


  • Compact
  • Lightweight
  • Durable
  • Ease of calibration for PK II & T9000
  • Closed lid operation
  • Easy hookup: External connections
  • 3 way vent valve
  • New rubber weight insert
  • For use on bench or tripod
  • Certification and warranty?????


  • Calibrated to your local gravity
  • Sold as a single unit or in sets
Buy a custom machined weight set

Why should custom machined weights be calibrated to your local gravity? Download the Gas Cost Analysis for PK Calibration spreadsheet to see the difference.

PK Tester Quote

JM offers full reconditioning on any deadweight tester, upgrade options on older units, and repair quotes on broken units. Learn more about our full solution for deadweight testers including sales, rental, calibration, and repair. You can also request a quote below: