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GT130x Series Glass Tube Variable Area Flow Meters

Efficient and cost-effective for moderate accuracy requirements. Full-View® 1100 Series replacements.
Models 1305 / 1306 / 1307

The GT130x Series glass tube VA flow meters are a family of versatile and economical meters designed for general use in applications with moderate metering accuracy requirements — typical accuracy ranges are 1% to 10% full scale, depending on the model selected. They are ideal for purge type service, seal oil systems, bearing lubrication and cooling water indication, and offer o-ring seal construction with ten-to-one rangeability, as well as a wide range of float types and capacity ranges.

The GT130x Seal Series flow meters provide an excellent and modular drop-in replacement for existing Brooks Instrument Full-View® 1100 Series meters: models 1110, 1114, 1140, 1144.

Questions?

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Features

  • Broad range of flow ratings from 0.8 to 25 gpm; 3 to 50 scfm
  • Pressure ratings up to 500 psig / 34 bar
  • Accuracy ranges from 1% to 10% Full Scale
  • Calibrated to process conditions with 75mm, 127mm or high resolution 250mm direct reading scales
  • Sturdy bolted side-plate construction
  • Standard NPT or flanged connections
  • Vertical inlets and outlets standard
  • Glass containment safety sleeve ensures personal safety

Benefits

  • Cost-effective accuracy combined with long-lasting repeatable measurement
  • Reliable O-ring seal design for leak-free process connections
  • Rugged side-plate construction protects glass tube from piping stress and/or vibration
  • Vertical and/or horizontal NPT or flanged connections enables easy connection with existing process piping
  • Meter inlet and outlet same size; provides positive seal that is easy to maintain
  • Optional needle valve mounted to inlet or outlet for setting the desired flow
  • Optional economical brass fittings for delicate applications (i.e. 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
Product Type

Glass Tube VA Flow Meter

Applications:  Clean liquids and gases

Differentiator

Drop-in replacement for the Brooks Instrument Full-View 1100 series

Rugged stainless steel construction for heavy duty applications and corrosive atmospheres

Personal safety first with glass containment safety sleeve

Optional needle valve mounted on inlet or outlet for precision flow control

O-Ring seal construction provides a positive seal and easy maintenance

Performance
Flow Range (Full Scale Capacity)

Water

10 gpm / 2,460 lph

Air

45 scfm / 69 m3n/hr

See Capacities Tables in Data Sheet 

Pressure Drop
Refer to Capacities & Pressure Drop Tables in Data Sheet
Accuracy

Models 1306  /  1307:  +/- 1% Full Scale  /  Class 1.6 VDI /  VDE

Models 1306  /  1307:  +/- 2% Full Scale  / Class 2.5 VDI  /  VDE

Model 1305:  +/- 5% Full Scale

Model 1305:  +/- 10% Full Scale

Repeatability
Less than 0.5% Full Scale
Mechanical
Metering Tube Material

Borosilicate Glass

 

Scales

1305: On-tube or Engraved Detachable Metal Plate

1306 & 1307: Engraved Detachable Metal Plate

 

Scale Length

1305: 75mm

1306: 127mm  /  150mm

1307: 250mm

Scale Graduations

Choice of direct reading units, millimeter or percentage of maximum flow with factor tag.

 

Protective Tube Sleeve
UV stabilized polycarbonate
Window Material

Polycarbonate with UV Inhibitor

 

Float Material
316 Stainless Steel
Housing
Aluminum or Stainless Steel side plates (Stainless Steel side plates are standard Full-View Replacement meters)
End Block Options
Brass or 316 Stainless Steel
O-Ring Materials

Viton® fluorelastomer

Buna-N

Kalrez® 4079

Process Connections

Brass Construction:  Models 1306  / 1307:  Female NPT, BSPT / Rc 

316 Stainless Steel:  Models 1306  / 1307:  Female NPT, BSPT / Rc  /  150# Flange per ASME B16.5

Brass Construction:  Model 1305:  Female NPT

316 Stainless Steel Construction:  Model 1305:  Female NPT

Optional Equipment
Ratings
Max Pressure
Refer to Maximum Pressure Ratings Table in Data Sheet
Max Temperature
121°C (250°F)
Ambient Temperature Range
33 to 125°F  /  1 to 52°C
Fluid Temperature Range

33 to 250°F  /  1 to 121°C



Diagnostics & Display
Alarms
Compliance
Certifications/Approvals
International Calibration Certificate (ICC)
1305 1306 1307
Differentiator

Vertical connections

Threaded Connection only

75 mm scale length

+/- 10% Full Scale

+/- 5% Full Scale

Threaded or Flange Connections

Models 1306:  +/- 1% Full Scale  /  Class 1.6 VDI /  VDE

Models 1306:  +/- 2% Full Scale  / Class 2.5 VDI  /  VDE

127/150 mm scale length

Threaded or Flange Connections

Models 1307:  +/- 1% Full Scale  /  Class 1.6 VDI /  VDE

Models 1307:  +/- 2% Full Scale  / Class 2.5 VDI  /  VDE

250 mm scale length

Fluid Type

Clean Liquids

Gas

Clean Liquids

Gas

Clean Liquids

Gas

Flow Range (Full Scale Capacity)

Flow Range - Water:  25 GPM  /  95 l/h

Flow Range - Air:  50 SCFM  /  87 m3n/h

Flow Range - Water:  9.8 GPM  /  2200 l/h

Flow Range - Air:  39 SCFM  /  61 m3n/h

Water:  10 GPM  /  2,460 l/h

Air:  45 SCFM  /  69 m3n/hr

Accuracy

±10% Full Scale

±5% Full Scale

+/- 2% Full Scale  /  Class 2.5 VDI /  VDE

+/- 1% Full Scale  / Class 1.6 VDI  /  VDE

+/- 2% Full Scale  /  Class 2.5 VDI /  VDE

+/- 1% Full Scale  / Class 1.6 VDI  /  VDE

Temperature Range

33 to 250°F  /  1 to 121°C

33 to 250°F  /  1 to 121°C

33 to 250°F  /  1 to 121°C

Max Pressure

Size 8: 200 PSIG  /  13.7 bar

Size 10: 150 PSIG  /  10.3 bar

Refer to Maximum Pressure Ratings Table in Data Sheet Refer to Maximum Pressure Ratings Table in Data Sheet
Scale Length 75 mm 127 / 150 mm 250 mm
Wetted Materials Brass or 316 Stainless Steel Brass or 316 Stainless Steel Brass or 316 Stainless Steel
Process Connections NPT (Female) Models 1306:  Female NPT, Rc  /  150# Flange per ASME B16.5 Models 1307:  Female NPT, Rc  /  150# Flange per ASME B16.5
Alarms

None

None

None

Certifications/Approvals

Pressure Test certificate

Oxygen Cleaning certificate

Certificate of Conformance

International Calibration Certificate (ICC)

Pressure Test certificate

Oxygen Cleaning certificate

Certificate of Conformance

International Calibration Certificate (ICC)

Pressure Test certificate

Oxygen Cleaning certificate

Certificate of Conformance

FilenameFile TypeDocuments By Language
Data Sheet - GT1305 pdf English
Data Sheet - GT1306 pdf English
Data Sheet - GT1307 pdf English
Installation & Operation Manual - 1303 pdf English
Installation & Operation Manual - GT1305 pdf English
Installation & Operation Manual - GT1306, GT1307 pdf English
Quick Start Guide pdf English
Full-View Replacement Options pdf English