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Rotameter GT1000

  • Optional double scale
  • Horizontal or vertical connections
  • Operating temperature range 1°C to 52°C; pressure rating up to 34bar
  • Suitable for most liquids and gases

Product description

GT1000 Series Glass Tube Variable Area Flow Meters provide high level of performance for high flow rates. Simple, yet rugged design to meet the needs of various industries.


The GT1000 Series glass tube VA flow meter from Brooks Instrument is easy to read and uses simplicity of design with rugged, long-lasting flow measurement performance for a wide range of high-flow gas and liquid applications where viewing the process is important.


Featuring a clear and easy-to-read scale, the GT1000 Series O-ring seal design minimizes process downtime by allowing for convenient in-line removal of the glass tube for cleaning and maintenance. Reliable, with only one moving part, it is globally approved for use in hazardous environments.


  • Wide range of flow ratings
  • Operating temperature range 1°C to 52°C
  • Pressure ratings up to 500 psig / 34 bar
  • Two accuracy levels to choose from: 2% or 1% Full Scale
  • Optional high and low-flow reed switch or inductive alarm, also for safe use in explosive hazardous areas
  • Calibrated to process conditions with 127mm or high resolution 250mm direct reading scales
  • Brass or 316L stainless steel end fittings
  • Flanged or threaded connections
  • Horizontal or vertical connections
  • Horizontal end fittings 360° rotatable
  • 180° viewing window
  • Rugged, vented polycarbonate enclosure available on most models


Articles Approvals Control range IP Class Length of scale Material of body Material of glass tube Materials Float Materials O-Ring Materials Wetted Parts Op. Pressure Range Max Temperature Range From Temperature Range To Valve type
ATEX, EMC, PED 1:10 IP67 250 mm Aluminium Borosilicate glass Carboloy, Glass, Sapphire, Stainless steel 316, Tantal Buna, Kalrez, PTFE, Viton Borosilicate glass, Brass, Stainless steel 316 16,5 bar 1 °C 52 °C Som tillval
34 bar
34 bar
34 bar
34 bar



Flow meter GT1000



Approvals ATEX, EMC, PED
Control range 1:10
IP Class IP67
Length of scale 250 mm
Material of body Aluminium
Material of glass tube Borosilicate glass
Materials Float Carboloy, Glass, Sapphire, Stainless steel 316, Tantal
Materials O-Ring Buna, Kalrez, PTFE, Viton
Materials Wetted Parts Borosilicate glass, Brass, Stainless steel 316
Op. 16,5 bar
Temperature Range From 1 °C
Temperature range of media from 1 °C
Temperature range of media to 121 °C
Temperature Range To 52 °C
Valve type Som tillval
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