Dwyer 490A Manometer
Starting at $721.00

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  • Seven user-selectable English and metric units
  • Stores 40 readings in memory for later reference
  • Accurate up to ±0.5% F.S (60 to 78°F)
  • Pressure Hysteresis: ±0.1% of full scale
  • 32 to 104°F temperature limits
  • Two 1/8in (3.18mm) female NPT connections
  • CE approved

The Dwyer 490A Digital Manometer is a 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.

Dwyer 490A Digital Manometer Applications Include

  • Chiller to coils for freeze protection
  • HEPA filters to determine when a filter needs to be changed
  • Measure pressure drop across pumps
  • Valves to determine valve position
Dwyer A-324 Compression Fitting
Compression fitting, brass 1/8" NPT to 1/4" metal tubing
Dwyer A-402A Carrying Pouch
Nylon carrying pouch, 7-1/2" x 3" x 2-1/4"


This product can be used in the following applications: