GT1000 Series

GT1000 Series Glass Tube Variable Area Flow Meters

Simple design. Rugged performance for high flow rates.

Models 1020N / 1024N / 1026N / 1027N

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.

Features

Wide range of flow ratings
Operating temperature range 33 to 125°F (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

Benefits

Tube and float can be re-ranged in line, minimizing process downtime
Rotatable connections for easy installation at any angle
Packing gland or O-ring sealing to meet piping requirements or customer preference
No power required; reduces installation cost and provides flow measurement in hazardous areas
Low-pressure drop allows for economical pump selection
Optional needle valve mounted to inlet or outlet for setting the desired flow
Optional economical brass fittings for delicate applications (e.g. avoidance of hydrogen embrittlement)

Applications

Industrial processes
Pharmaceutical production
Oil and gas pumping and refining processes
Chemical manufacturing
Burner control
Water treatment and distribution systems

Specifications

Performance Mechanical Compliance Diagnostics & Display

Product Type	Glass Tube VA Flow Meter Applications: Clean liquids and gases
Differentiator	Removable borosilicate glass metering tube for easy service without removing the meter, minimize downtime Process connections can be rotated 360°, 180° viewing window, panel mount option One or two flow alarms are available, alarms are safe use in explosive atmospheres Reliable o-ring seal design for leak free process connections Optional needle valves mounted to inlet or outlet for precision flow control
Flow Range (Full Scale Capacity)	Water 98 gpm / 22,000 lphAir 270 scfm / 440 m3n/hrSee Capacity Tables in Data Sheet
Pressure Drop	See Capacities & Pressure Drop Tables in Data Sheet
Accuracy	+/- 2% Full Scale / Class 2.5 VDI / VDE +/- 1% Full Scale / Class 1.6 VDI / VDE
Repeatability	Less than 0.5% Full Scale
Metering Tube Material	Borosilicate Glass
Scales	Single or Dual Detachable Aluminum Plate
Scale Length	127mm, 200mm and 250mm
Scale Graduations	Choice of direct reading units, millimeter or percentage of maximum flow with factor tag.
Window Material	Polycarbonate with UV Inhibitor
Float Material	Size 2 and 6: Glass, Sapphire, Carboloy, 316 Stainless Steel Size 7: Glass, 316 Stainless Steel Size 8 to 13: 316 Stainless Steel
Float Stops	Sizes 2 through 13: Teflon
Housing	Cast Aluminum with Epoxy Paint Coating
End Block Options	Brass or 316 Stainless Steel (1.4404)
O-Ring Materials	Viton® fluoroelastomer Buna-N Kalrez® 4079 fluoroelastomer EPDM
Connection Materials	Brass or 316 Stainless Steel (1.4404)
Process Connections	Brass Construction: NPT, BSPT / Rc Female connections 316 Stainless Steel Construction: NPT, BSPT / Rc Female connections or 150# Flanges per ASME B16.5
Optional Equipment	–
Ratings	–
Max Pressure	Refer to Maximum Pressure Ratings Table in Data Sheet
Max Temperature	121oC (250oF)
PED Categories	See PED Categories Table in Data Sheet Sizes 2 through 10 meet PED Category SEP Sizes 12 & 13 do not conform to PED
Certifications/Approvals	International Calibration Certificate (ICC) Material certification Pressure Test certificate Oxygen Cleaning certificate Certificate of Conformance
Alarms	Reed Switch – Sizes 7 to 13 Inductive Switch – Sizes 2 & 6
Fluid Temperature Range	Meter 33 to 250°F / 1 to 121°CAlarm Option Reed Switch: 33 to 250°F / 1 – 121°CInductive Switch: 33 to 167°F / 1 – 75°C
Ambient Temperature Range	33 to 125°F / 1 to 52°C

BCN (+34) 93 864 68 43

MAD (+34) 91 864 6843

Unit converter