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  1. Pressure Indicators

Dwyer 490 Manometer

Versatile, hand-held wet/wet manometer with ±0.5% F.S. accuracy for liquid & gas pressure measurement, .

Dwyer 490 Manometer
Dwyer 490 Manometer
Retired products cannot be ordered
The Dwyer 490A Manometer is the replacement

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  • By Dwyer Instruments
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Call 1-800-884-4967 or email sales@instrumart.com. Open 8:00 am to 5:30 pm ET.
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Overview

Features

  • Measures virtually any liquid media compatible with 316L stainless steel
  • Instant selection from up to seven English/metric units
  • Stores 40 readings in memory for later reference
  • Both audible and visual overpressure alarms
  • Operates up to 100 hours on a single 9 volt battery
  • New adjustable dampening feature for averaging fluctuating readings
  • Accurate up to ±0.5% F.S (60 to 78°F)
  • Pressure Hysteresis: ±0.1% of full scale
  • Temperature Limits: 32 to 104°F 4 digit LCD display
  • Two 1/8" (3.18 mm) female NPT connections
  • CE approved

Description

The Dwyer 490 Digital Manometer is a versatile, hand-held, battery operated wet/wet manometer featuring accuracy up to ±0.5% F.S. The 490 is available in several basic ranges for positive or positive differential pressure measurement and can tolerate most liquid media compatible with 316LSS. The instrument includes a memory function that allows storage of up to 40 readings for later recall. A backlight provides auxiliary lighting for hard-to-see locations. Standard are a hold feature and both visual and audible overpressure alarms. A new feature added to the Series 490 is a field adjustable damping. This allows the user to choose the level of display averaging rate corresponding to the fluctuation level common in many applications. A 9V alkaline battery is included that provides up to 100 hours of operation.

The Dwyer 490 manometer is ideal for applications including:

  • Balancing hydronic heating or cooling water loops.
  • Checking pump or chiller performance.
  • Determining pressure head loss from valves and pipe reduction.

Documents

Documents

  • Dwyer 490 Manometer Datasheet PDF (191 KB)
  • Dwyer 490 Manometer Manual PDF (142 KB)
  • All possible part numbers

Accessories

Dwyer A-324 Compression Fitting
Dwyer A-324 Compression Fitting

Compression fitting, brass 1/8" NPT to 1/4" metal tubing.

Call for pricing
Dwyer A-402A Carrying Pouch
Dwyer A-402A Carrying Pouch

Nylon carrying pouch, 7-1/2" x 3" x 2-1/4".

Call for pricing

Need Help? Call a Temperature engineer at 1-800-884-4967

We're open 8:00 am to 5:30 pm ET

Luke M. headshot Luke M.
Applications Engineer
5 years at Instrumart
Shawn D. headshot Shawn D.
Senior Applications Engineer
20 years at Instrumart
David S. headshot David S.
Applications Engineer
Dwight M. headshot Dwight M.
Senior Applications Engineer
28 years at Instrumart
Ron J. headshot Ron J.
Temperature Engineering Lead
29 years at Instrumart
Rhys D. headshot Rhys D.
Applications Engineer
Alex A. headshot Alex A.
Senior Applications Engineer
19 years at Instrumart
Luke M. headshot Luke M.
Applications Engineer
5 years at Instrumart
Shawn D. headshot Shawn D.
Senior Applications Engineer
20 years at Instrumart
David S. headshot David S.
Applications Engineer
Dwight M. headshot Dwight M.
Senior Applications Engineer
28 years at Instrumart
Ron J. headshot Ron J.
Temperature Engineering Lead
29 years at Instrumart
Rhys D. headshot Rhys D.
Applications Engineer
Alex A. headshot Alex A.
Senior Applications Engineer
19 years at Instrumart
Luke M. headshot Luke M.
Applications Engineer
5 years at Instrumart

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Dwyer 490 Manometer
Dwyer 490 Manometer
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