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RK Deadweight Tester

Brand: M&G Calibration
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The RK floating ball type pneumatic dead weight tester is engineered to offer user-friendly, safe operation. The easy-to-use primary standard provides reliable and accurate pressure measurement in the field, or in a lab.

Featuring a self-regulating design, that allows automatic stabilization of weights, eliminating the need to adjust input pressure.

Local gravity and standard gravity (980.665 gals) versions available.
Features
  • Accuracy to 0.015% of reading
  • Ranges to 300 psi
  • Available in psi, kg/cm², bar, kPa, inH₂O, cmH₂O, and inHg
  • Small incremental weight sets provide fractional output pressure
  • Rugged ceramic measuring ball
  • Overhung weight carrier reduces side thrust and friction
  • Quick-leveling system for field use
  • Optional Tripod

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Specifications

Brand

Accuracy

  • Accuracy: ± (0.015 % of Reading*), ± (0.025 % of Reading*), or ± (0.05 % of Reading)
  • *Down to 10 inH₂O. ± (0.05 % of Reading) below 10 inH₂O
  • Repeatability: ± 0.005 % of Reading
  • Temperature Coefficient: ± 0.00167 % of Reading / °C outside of 23° C

Weight Mass

  • Pressure Range: 0.145 to 300 psi/1 to 2000 kPa
  • Gravity: 9.80655 m/s² (International Standard)/ Local Gravity (Specify)
  • Available Units: psi, kg/cm², bar, kPa, inH₂O, cmH₂O, inHg
  • Water Column Reference: 20° C (ISA Standard) / 60° F (AGA Standard, specify when ordering)

Pressure Source

  • Source: Nitrogen or Instrument/Shop Air (ISA Quality Standard 7.3)
  • Maximum Supply Pressure: 450 psi/3100 kPa
  • Minimum Supply Pressure: 30 psi/210 kPa (or 150 % of desired Output Pressure)
  • Flow Rate: 1 scfh at 0.15 psi / 28 slh at 1 kPa output | 60 scfh at 300 psi / 1700 slh at 2000 kPa output

Enclosure

  • Tester Dimensions (L x W x H): 15 x 9 x 8 in (38.1 x 24.1 x 20.3 cm)
  • Tester Weight: 18 to 31.5 lb (8.2 to 14.3 kg)
  • Weights Case Dimensions (L x W x H): 12 x 8.5 x 11.5 in (30.5 x 21.6 x 29.2 cm)
  • Masses: 17.5 to 61.5 lb (8 to 30 kg)

Material and Connection

  • Weight Masses: Stainless Steel (as standard) / Aluminum (small incremental weights)
  • Ball: Ceramic
  • Connection: 2” Female NPT

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