Glass Variable Area Flowmeters
When measuring liquid or gas flow at higher pressures and temperatures than is suitable for plastic, you can achieve accurate flow rates with robust glass tube rotameters (variable area flowmeters) from Brooks Instrument. With a broader range of flow rates available, glass tube rotameters are suitable for a variety of liquids and gases.
Resistance to thermal shock, pressure and oxidation is the result of employing borosilicate glass tube bodies that can withstand pressures up to 13.8 bar (200 psi). Plus, corrosion-resistant material options for scales, floats, fittings and valves accommodate a variety of applications, whether in the lab or in industrial processes.
Key Applications
- Industrial processes
- Liquid level measurement and control instrumentation
- Pharmaceutical production
- Oil and gas pumping and refining processes
- Fuel cell research
- Chemical manufacturing
- Analytical instrumentation
- Wastewater treatment instrumentation
- Water treatment and distribution systems
Select the glass tube rotameter that best meets your project requirements.
PRODUCTS
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| Product Type |
Glass Tube VA Flow Meter
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Glass Tube VA Flow Meter |
Manual Flow Controller |
| Differentiator |
Ideal for Wide Variety of Gas & Liquid Applications Economical Optional Integrated single or double alarm QuickShip Available |
Ideal for clean liquids and gases Configurable to retro-fit GT1000, GT130x and Full-View models Rugged design for indoor or outdoor use Durable, even in harsh or hazardous environments |
Available as Standalone or Integrally Mounted to Flow Meter |
| Flow Range (Full Scale Capacity) |
Water Nitrogen 4-900 ml/min 2-100 CCM 0.1-9 LPM 0.1-130 SCFH |
Water Air See Capacity Tables in Data Sheet |
Water .024 - 480 gph Air .10 -2130 scfh |
| Accuracy | ± 3% - 10% FS |
Standard: ±10%, ±5%, ±2% Full Scale, Class 2.5 acc VDI/VDE Optional: ±1% Full Scale, Class 1.6 acc VDI/VDE |
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| Max Temperature | 121oC (250oF) | 121oC (250oF) | 178oC (350oF) |
| Max Pressure | 200 psig | Refer to Maximum Pressure Ratings Table in Data Sheet | Refer to Maximum Pressure Ratings Table in Data Sheet |
| O-Ring Materials |
Viton-A® fluoroelastomers Buna-N Teflon® Butyl EPR Kalrez® |
Viton® Buna-N Kalrez® EPDM |
Viton® fluoroelastomers Buna-N Kalrez® EPR Kalrez/Teflon® |
| Process Connections |
Horizontal female 3/8" NPT threaded adapters 1/8" - 1/4" NPT 1/8" - 1/4" Compression 6mm Compression 1/4" - 3/8"; RC 1/4" VCR® 1/4" Hose Swagelok® Converters |
316 stainless steel |
1/8" - 1/4" F-NPT 1/8" - 1/4" Tube Compression 1/4" ID Hose 3/4" F-NPT Integral connection |
| Alarms |
Inductive ring sensor/switch |
Tube Sizes 2 & 6: Ring Initiator High/Low Alarm Tube Sizes 7-10: Reed Switch High/Low Alarm Hazardous Area Approvals: Zone 1/Zone 2 (CSA/ATEX/IECex) - gas/dust. Protection method Ex-m (no barrier). Div 1/Div 2 (CSA) - gas/dust. Protection method I.S. / Non-incendive |
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| Certifications/Approvals | International Calibration Certificate (ICC) |
International Calibration Certificate (ICC) Material Certification to DIN 3.1 Declaration of Compliance 2.1 Oxygen Service |
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