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Series 490A Hydronic Differential Pressure Manometer

Brand: Dwyer Instruments, LLC
Does not ship to United States
The SERIES 490A Digital Manometers are versatile, hand-held, battery operated manometers available in several basic ranges for positive or positive differential pressure measurement and can tolerate most liquid media compatible with 316LSS.

A new feature added to the Series 490A is a field adjustable damping, which allows the user to choose the level of display averaging rate corresponding to the fluctuation level common in many applications.
Features
  • Seven user-selectable English and metric units
  • Stores up to 40 readings for later recall
  • Backlight for use in dim areas
  • Digital dampening for low pressure - high resolution logging accuracy
  • Automatic resolution adjustment for finer control
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The SERIES 490A Digital Manometers are versatile, hand-held, battery operated manometers available in several basic ranges for positive or positive differential pressure measurement and can tolerate most liquid media compatible with 316LSS.

A new feature added to the Series 490A is a field adjustable damping, which allows the user to choose the level of display averaging rate corresponding to the fluctuation level common in many applications.
Features
  • Seven user-selectable English and metric units
  • Stores up to 40 readings for later recall
  • Backlight for use in dim areas
  • Digital dampening for low pressure - high resolution logging accuracy
  • Automatic resolution adjustment for finer control

Specifications

Accuracy

  • ± 0.5 % of Full Scale
  • ± 1.5 % of Full Scale

Approvals & Certifications

  • CE

Dimensions

  • 7-1 / ”H x 3” W x 2-1/4”D (191 x 76 x 57 mm)

Display

  • 0.42” (10.6 mm)
  • 4-Digit LCD

Hysteresis

  • ± 0.1 % of Full Scale

Media

  • Compatible Gases
  • Liquids & Gases

NACE & NIST

  • NIST Traceable Calibration Certificate

NPT Connection

  • 1/8” NPT Female

Power Requirement

  • 9 V Alkaline Battery

Pressure Range

  • psi: 0 to 500 (kPa: 0 to 3,447, bar: 0 to 34.47)

Pressure Units

  • bar
  • Feet WC
  • Inches Hg
  • Inches WC
  • kPa
  • mbar
  • Millimeters Hg
  • psi

Storage Temperature

  • -20° to 80° C (-4° to 176° F)

Supply Pressure - Maximum

  • psig: 30 to 400 (kPa: 207 to 2,758, bar: 2 to 27)

Temperature Range

  • 0° to 60° C (32° to 140° F)

Wetted Materials

  • 316L Stainless Steel
  • Brass 360
  • Buna-N
  • Copper
  • PTFE
  • Reinforced Acetal Copolymer
  • Silicone Grease

Typical Applications

  • Chiller to coils for freeze protection
  • Hydronic valve balancing
  • Measure pressure drop across pumps
  • Refrigerant pressure testing