Dwyer 490W Hydronic Differential Pressure Manometer Kit

  • Dwyer 490W Hydronic Differential Pressure Manometer Kit
  • Dwyer 490W Hydronic Differential Pressure Manometer Kit
  • Dwyer 490W Hydronic Differential Pressure Manometer Kit
Price: $3,766.80


Dwyer Smart Air Hood - Advanced Air Balancing Capture Hood with 12ft Extension Pole

Quad Flow Design Technology, Predictive Balancing

Series 490W Hydronic Differential Pressure Manometer is the most accurate and easy to operate manometer on the market. By using wireless transducers and a versatile handheld, a single operator can monitor and balance a hydronic system in less time than traditional hydronic balancers. The Series 490W utilizes mobile technology to communicate via a Bluetooth connection with the transducers to monitor differential pressure and flow on up to three different valves. Being wireless means there are no hoses to carry, snag on equipment or needing to be drained. The 490W includes the Dwyer Hydronic Application Software that contains valve charts for numerous manufacturers.


  • Rugged weatherproof handheld housing withstands 1.5 m drop test.
  • Wireless measurement of differential pressure, single pressure and air flow.
  • Bluetooth direct wireless communication provides range up to 65' (19.8 m).
  • The ergonomic design is much lighter and easier to work with, providing greater maneuverability and quick install setup.


Wireless Distance Up to 65' (19.8 m)
Service Compatible gases & liquids.
Wetted Materials 316 SS, PTFE, brass.
Accuracy 2% of reading, ±0.5 psi.
Compensated Temperature Range 14 to 140°F (-10 to 60°C).
Pressure Hysteresis ±0.25% FS.
Pressure Range 0-50 psi and 0-200 psi
Process Temperature Limits -4 to 185°F (-20 to 85°C)
Display 5" Gorrilla glass 3, touch screen, 1280x720.
Resolution 0.01 psi.
Process Connections Two 1/4" male NPT
Power Requirements CR2050 lithium battery, user replaceable
Weight 2 lbs


  • (1) Handheld test instrument with Dwyer Hydronic App preloaded onto device
  • (2) 0 - 50 psig wireless transducers
  • (2) 0 - 200 psig wireless transducers
  • (2) 1/4" SAE 45° x 1/4" Male NPT straight adapter
  • (2) 1/4" Female elbow x 1/4" Male NPT fitting
  • (2) Piercing Gauge Adapters 1/8" DIA x 1-1/2" length
  • (2) Piercing Gauge Adapters 1/8" DIA x 3" length
  • (2) Piercing Gauge Adapters 1/16" DIA x 1-1/2" length
  • (1) 490W fabric carrying case
  • (2) Piercing gauge adapters and fittings cases
  • (1) Installation and operating manual
  • (1) Charger cable and power adapter for handheld test instrument


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