Series DR Direct Reading Glass Flowmeters

65 mm and 150 mm, ±5% FS Accuracy, Interchangeable Flowtubes
Use Series DR Glass Flowmeters to accurately measure flow rates of air or water with the convenience of a direct reading scale. 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. Flowmeters are shipped completely assembled and include standard panel mounting hardware for quick installation.

Add suffix "M" for metric scale.
* Denotes glass float.
† Metric models use ccm as unit of measure.

Service: Compatible gases or liquids.
Wetted Materials:
Flowtube: Borosilicate glass.
Float: 316 stainless steel (black glass as indicated).
Float Stops: Teflon®.
End Fittings: Anodized Aluminum or 316 stainless steel.
O-rings: Buna-N on aluminum models and Viton® on stainless steel models.
Temperature Limits: 250°F (121°C).
Pressure Limits: 250 psig (17 bar).
Accuracy: ±5% FS @ 70°F (21.1°C) and 14.7 psia (1 atm absolute).
Repeatability: ±0.25% of scale reading.
Scales: Direct reading 65 mm or 150 mm scales for air or water.
Turn-down ratio: 10:1.
Connection: 1/8" female NPT.
Mounting: Vertical.
Valve: 6-turn needle (standard on models with valve).
Glass flowmeters are suitable for metering gases or liquids for film processing, paper manufacturing, chemical processing, semiconductor industry, water and air pollution analysis equipment, metals processing, industrial fuel and energy conservation, cylinder gas metering, and general laboratory and industrial applications.