Dwyer DR4 Series High Flow Glass Variable Area Flow Meter offers a simplified solution to the problem of fluid flow indication at higher capacity levels. Flow meters have a direct reading scale for air or water and are designed to withstand even the harshest industrial applications.

Permanently fused ceramic scale has integral float guides for optimum float performance. Reflective plastic background and 1.5 X magnification lens reduces eye fatigue and allows for more accurate readings. Units include a safety blow-out back panel for additional protection.

Flow includes Flow Transmitters, Flow Sensors, Flow meters, Sight Flow Indicators and Water Meters. Mass Flow meters, Controllers, Flow Indicators and Controllers are ideal for measurement of flow rates. Flow Switches come as paddle, thermal, piezo, and shuttle/piston.

Flow meters indicate flow rate. The different sensors include dial, in-line, ultrasonic, orifice plate, totalizing meters, variable area, venturi, or with switch output. The different designs of the flow meters have a variety of applications.

Dwyer DR4 Series Features

  • Permanently fused ceramic scale has integral float guides for optimum float performance
  • Reflective plastic background
  • 1.5 X magnification lens reduces eye fatigue
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Dwyer DR4 Series Specification

Service Compatible gases and liquids.
Wetted Materials Flow tube: Borosilicate glass; Float: 316 stainless steel; Float Stops: PTFE; End Fittings: Brass or 316 stainless steel; O-rings: Buna-N on brass models and Fluoroelastomer on stainless steel models.
Temperature Limits 250°F (121°C).
Pressure Limits 200 psig (13.8 bar).
Accuracy ±10% FS @ 70°F (21.1°C) and 14.7 psia (1 atm absolute).
Repeatability ±0.25% of scale reading.
Scale Direct reading 127 mm scales for air or water.
Turn-down Ratio 10:01
Connection 3/8″ female NPT.
Mounting Vertical.
Valve 6-turn needle (standard on models with valve).

Download Data Sheet: Series DR4 High Flow Glass Variable Area Flow Meter

Ref: dwyer-inst.com