1305D DeadWeight Tester

Brand: Ashcroft Inc
Does not ship to Virginia, United States

1305D and 1305DH deadweight testers provide a precise means for generating pressure with high accuracy that can be used as a primary calibration standard.

The unit's built-in shuttle valve provides the means to control the rate of pressure increase, while precision adjustment is accomplished with an integral micro vernier displacement valve.

An ideal product that offers a rugged field ready primary standard, certified to yield consistent accurate results.
  • Accuracy: 0.1% of reading 
  • Operating pressure: 15 to 10,000 psi 
  • Operating media: 
  • 1305D: SAE 20 weight automotive or machine oil 
  • 305DH: Phosphate-based or glycol fluids 



  • ± 0.1 % of Reading

Approvals & Certifications

  • ISO 9001

Enclosure, Body Material

  • Pump: Aluminum Alloy

Materials of Construction

  • Cylinder: 416 Stainless Steel
  • Cylinder: 440C Stainless Steel
  • Weight: Non-Magnetic Die Cast Zinc Alloy, ASTM AC41A


  • Phosphate or Glycolic-based Hydraulic Fluids - 1305DH
  • SAE 20 Automotive or Machine Oil - 1305D


  • NIST

Operating Pressure

  • psi: 15 to 10,000 (kPa: 103.4 to 68,950, bar: 1 to 689.5) - Max.

Seat / Seal Material

  • O-Ring Seal: Buna-N - 1305D
  • O-Ring Seal: Ethylenepropylene - 1305DH

  • Calibration Labs
  • Test & Measurement

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