Series 490A Hydronic Differential Pressure Manometer

Brand: Dwyer Instruments, LLC

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

Models matching criteria: 24
  • Pressure Range - psi: 0 to 500 (bar: 0 to 34.47, kPa: 0 to 3,447)
  • Options - No Options
  • Certificates - NIST Traceable Calibration Certificate
100+ In Stock
$106.00 CAD
Does not ship to OH, United States
DWYER Wet/Wet Handheld Digital Manometer, 0 to 200 psi (0 to 1379 kPa) view more
  • Pressure Range - psi: 0 to 200 (bar: 0 to 13.79, kPa: 0 to 1,379)
  • Options - No Options
  • Certificates - None
100+ In Stock
$1,337.00 CAD
Does not ship to OH, United States
  • Pressure Range - psi: 0 to 200 (bar: 0 to 13.79, kPa: 0 to 1,379)
  • Options - 3-Way Vent Valve
  • Certificates - None
50+ In Stock
$165.00 CAD
Does not ship to OH, United States
DWYER Wet/Wet Handheld Digital Manometer, 0 to 500 psi (0 to 3448 kPa) view more
  • Pressure Range - psi: 0 to 500 (bar: 0 to 34.47, kPa: 0 to 3,447)
  • Options - No Options
  • Certificates - None
50+ In Stock
$579.00 CAD
Does not ship to OH, United States
  • Pressure Range - psi: 0 to 30 (bar: 0 to 2.068, kPa: 0 to 206.8)
  • Options - 3-Way Vent Valve
  • Certificates - NIST Traceable Calibration Certificate
50+ In Stock
$1,322.00 CAD
Does not ship to OH, United States
  • Pressure Range - psi: 0 to 100 (bar: 0 to 6.895, kPa: 0 to 689.5)
  • Options - 3-Way Vent Valve
  • Certificates - NIST Traceable Calibration Certificate
50+ In Stock
$425.00 CAD
Does not ship to OH, United States
DWYER Wet/Wet Handheld Digital Manometer, 0 to 15 psi (0 to 103.4 kPa) view more
  • Pressure Range - psi: 0 to 15 (bar: 0 to 1.034, kPa: 103.4)
  • Options - No Options
  • Certificates - None
50+ In Stock
$1,319.00 CAD
Does not ship to OH, United States
DWYER Wet/Wet Handheld Digital Manometer, 0 to 50 psi (0 to 344.8 kPa) view more
  • Pressure Range - psi: 0 to 50 (bar: 0 to 3.447, kPa: 0 to 344.7)
  • Options - No Options
  • Certificates - None
50+ In Stock
$564.00 CAD
Does not ship to OH, United States
  • Pressure Range - psi: 0 to 500 (bar: 0 to 34.47, kPa: 0 to 3,447)
  • Options - 3-Way Vent Valve
  • Certificates - NIST Traceable Calibration Certificate
50+ In Stock
$512.00 CAD
Does not ship to OH, United States
DWYER Wet/Wet Handheld Digital Manometer, 0 to 100 psi (0 to 689.5 kPa) view more
  • Pressure Range - psi: 0 to 100 (bar: 0 to 6.895, kPa: 0 to 689.5)
  • Options - No Options
  • Certificates - None
50+ In Stock
$872.00 CAD
Does not ship to OH, United States
  • Pressure Range - psi: 0 to 30 (bar: 0 to 2.068, kPa: 0 to 206.8)
  • Options - 3-Way Vent Valve
  • Certificates - None
50+ In Stock
$1,667.00 CAD
Does not ship to OH, United States
  • Pressure Range - psi: 0 to 500 (bar: 0 to 34.47, kPa: 0 to 3,447)
  • Options - 3-Way Vent Valve
  • Certificates - None
50+ In Stock
$650.00 CAD
Does not ship to OH, United States
  • Pressure Range - psi: 0 to 200 (bar: 0 to 13.79, kPa: 0 to 1,379)
  • Options - No Options
  • Certificates - NIST Traceable Calibration Certificate
50+ In Stock
$320.00 CAD
Does not ship to OH, United States
DWYER Wet/Wet Handheld Digital Manometer, 0 to 30 psi (0 to 206.9 kPa) view more
  • Pressure Range - psi: 0 to 30 (bar: 0 to 2.068, kPa: 0 to 206.8)
  • Options - No Options
  • Certificates - None
50+ In Stock
$2,050.00 CAD
Does not ship to OH, United States
  • Pressure Range - psi: 0 to 200 (bar: 0 to 13.79, kPa: 0 to 1,379)
  • Options - 3-Way Vent Valve
  • Certificates - NIST Traceable Calibration Certificate
50+ In Stock
$2,084.00 CAD
Does not ship to OH, United States
  • Pressure Range - psi: 0 to 30 (bar: 0 to 2.068, kPa: 0 to 206.8)
  • Options - No Options
  • Certificates - NIST Traceable Calibration Certificate
50+ In Stock
$590.00 CAD
Does not ship to OH, United States
  • Pressure Range - psi: 0 to 50 (bar: 0 to 3.447, kPa: 0 to 344.7)
  • Options - 3-Way Vent Valve
  • Certificates - NIST Traceable Calibration Certificate
25+ In Stock
$1,072.00 CAD
Does not ship to OH, United States
  • Pressure Range - psi: 0 to 100 (bar: 0 to 6.895, kPa: 0 to 689.5)
  • Options - No Options
  • Certificates - NIST Traceable Calibration Certificate
25+ In Stock
$408.00 CAD
Does not ship to OH, United States
  • Pressure Range - psi: 0 to 15 (bar: 0 to 1.034, kPa: 103.4)
  • Options - 3-Way Vent Valve
  • Certificates - None
25+ In Stock
$1,924.00 CAD
Does not ship to OH, United States
  • Pressure Range - psi: 0 to 50 (bar: 0 to 3.447, kPa: 0 to 344.7)
  • Options - 3-Way Vent Valve
  • Certificates - None
24 In Stock
$539.00 CAD
Does not ship to OH, United States
  • Pressure Range - psi: 0 to 15 (bar: 0 to 1.034, kPa: 103.4)
  • Options - 3-Way Vent Valve
  • Certificates - NIST Traceable Calibration Certificate
23 In Stock
$511.00 CAD
Does not ship to OH, United States
  • Pressure Range - psi: 0 to 50 (bar: 0 to 3.447, kPa: 0 to 344.7)
  • Options - No Options
  • Certificates - NIST Traceable Calibration Certificate
15 In Stock
$300.00 CAD
Does not ship to OH, United States
  • Pressure Range - psi: 0 to 100 (bar: 0 to 6.895, kPa: 0 to 689.5)
  • Options - 3-Way Vent Valve
  • Certificates - None
5 In Stock
$1,417.00 CAD
Does not ship to OH, United States
  • Pressure Range - psi: 0 to 15 (bar: 0 to 1.034, kPa: 103.4)
  • Options - No Options
  • Certificates - NIST Traceable Calibration Certificate
4 In Stock
$1,197.00 CAD
Does not ship to OH, United States

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

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