Dwyer DR4 Series High Flow Glass Variable Area Flow Meter

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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

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).