Skip links

HOLIDAY HOURS: All Brooks Instrument facilities in the USA will be closed December 23, 26, 30 and January 2. For holiday hours of our facilities across the globe, please contact the specific location directly.

Sho-Rate™ Series Glass Tube Variable Area Flow Meters

Proven performance for low flow rates. Versatile options to match your needs.
Models 1250A / 1255A / 1350G / 1355G / 1358

For a wide range of chemical, petrochemical, biotechnology, research and analytical applications, Sho-Rate™ Series glass tube variable area flow meters provide industry-leading repeatability and reliability in two versatile lines.

Sho-Rate™ 1350/1355 flow meters deliver up to 3% accuracy and 0.25% repeatability depending on the model. Sho-Rate™ 1250/1255 flow meters offer a durable, cost-effective design to meet OEM requirements for systems requiring metering and analyzer integrators.

Questions?

Talk to one of our application engineering experts:

Call: 1-888-554-3569

Want to see it in action?

Request a Demo

Need the numbers?

Get a Quote

Features

  • Flow Ranges:
    • Air: Up to 140 scfh / 63 slpm
    • Water: Up to 34 gph / 2000 cc/min
  • Borosilicate glass tubes are compatible with most gases and fluids
  • Float materials include black glass, 316 stainless steel, sapphire, Carboloy®, tantalum
  • Magnification ensures scales are easy to read

Sho-Rate™ 1350 / 1355 / 1358 features include:

  • Three accuracy levels: 3% (low-flow Model 1355), 5% (low-flow Model 1350) or standard accuracy of 10% (high-flow Model 1358)
  • Repeatability of 0.25% Full Scale (0.5% Full Scale for Model 1358)
  • Scale includes built-in magnifier – scale decals can be applied directly to the tube to support unique flow ranges and units of measure
  • Options include standard or NRS™ integral needle control valves, as well as flow controllers on the inlet or outlet to go beyond measurement

Sho-Rate™ 1250 / 1255 features include:

  • Two accuracy levels: 5% Full Scale (Model 1250), 10% Full Scale (Model 1255)
  • Standard direct-read scales for common units and fluids – 65 mm, 150 mm scale lengths (approximate)
  • Inlet valve and outlet valve with options of cartridge valve, precision control valve or no valve
  • Easy-change design allows quick interchangeability of tube assemblies
  • Rotating lens provides a 180° view with magnification

Benefits

  • Options offer value-added features to meet project or OEM requirements
  • Borosilicate glass is resistant to thermal shock and corrosive gases and fluids
  • Corrosion-resistant material options for scales, floats, fittings and valves accommodate demanding applications
  • Integral float stops prevent loss of float during tube removal
  • Enhance accuracy with easy-to-read scales with magnification

Applications

  • Pharmaceutical production
  • Research
  • Chemical manufacturing
  • Analytical instrumentation
  • Water treatment and distribution systems

Product Type

Glass Tube VA Flow Meter

 

Differentiator

Ideal for Wide Variety of Gas & Liquid Applications

Economical

 

Performance
Flow Range (Full Scale Capacity)

Water

0.8 - 5 gpm

0.01 - 34 gph

0.041 - 130 lph



Air

3.4 - 15 scfm

0.12 - 140 scfh

3.2 - 3700 nlph

Nitrogen

4-900 ml/min

2-100 CCM

0.1-9 LPM

0.1-130 SCFH

Accuracy
± 3% - 10% FS
Repeatability
0.25% FS
Ratings
Max Pressure
200 psig
Max Temperature
121oC (250oF)
Mechanical
Materials of Construction
Borosilicate Glass, Brass, Aluminum, 316 Stainless Steel, Clear Polycarbonate,
Milk White Polycarbonate, Teflon®
Housing

Aluminum or Stainless Steel

 

Metering Tube Material

Borosilicate Glass

 

Scales

1250/1255

 Single or Dual Decal on Tube

1350/1355/1358

Single Decal on Tube

Scale Length
65mm, 150mm
Scale Graduations
Choice of direct reading units, millimeter or percentage of maximum flow with factor tag.
Window Material

1350, 1355, 1358: Polycarbonate with UV Inhibitor

 

Float Material
Carboloy®, Glass, Sapphire, Stainless Steel, Tantalum
Float Stops
Teflon
O-Ring Materials

Viton-A® fluoroelastomers

Buna-N

Teflon®

Butyl

EPR

Kalrez®

Valve Options

Cartridge III Valve and NRS™

Valve Materials
Stainless Steel
Flow Controller
Yes
End Block Options
Stainless Steel and Brass
Connection Materials
Stainless Steel
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

Diagnostics & Display
Alarms
Compliance
Certifications/Approvals
International Calibration Certificate (ICC)
1250A 1255A 1350G 1355G

1358

Differentiator Rotating lens allows 180° view with magnification Rotating lens allows 180° view with magnification

Clear Polycarbonate front shield with built-in magnifier for easy float and scale reading. Interchangeable tubes and floats with direct reading (DR) scales on tube

Clear Polycarbonate front shield with built-in magnifier for easy float and scale reading. Interchangeable tubes and floats with direct reading (DR) scales on tube

Heavy-wall, precision bore borosilicate glass metering tube. Tube removable without disconnecting the instrument.

Flow Range (Full Scale Capacity)

Water

.1 -10 lpm

.1 - 130 scfh

Air

.1 - 60 lpm

2 -550 ccm

.1 -25 scfh

Nitrogen

4-400 ml/min

0.1-1.2 SCFH

Water

.1 - 1.3 lpm

2 -130 ccm

Air

.05 - 50 lpm

4 - 850 ccm

.06 - 6 scfh

Nitrogen

2 - 100 ccm

0.1 - 9 lpm

.5 - 50 scfh

Water

.010 - 34 gph

.041 - 130 lph

Air

.12 -140 scfh

3.2 - 3700 nlph

Water

.59 - 2000 cc/min

Air

50 - 1300 scc/m

.82 - 63 slpm

Water

.8 - 5 gpm

Air

3.4 - 15 scfm

Accuracy

± 5%

± 3%

± 5%

± 3%

± 10% FS

Materials of Construction

Borosilicate Glass

Aluminum

316 Stainless Steel

Clear Polycarbonate

Teflon

Borosilicate Glass

Aluminum

316 Stainless Steel

Clear Polycarbonate

Teflon

Borosilicate Glass

Brass

Aluminum

316 Stainless Steel

Clear Polycarbonate

Milk White Polycarbonate

Teflon

Borosilicate Glass

Brass

Aluminum

316 Stainless Steel

Clear Polycarbonate

Milk White Polycarbonate

Teflon

Borosilicate Glass
FilenameFile TypeDocuments By Language
Data Sheet - 1250/1255 pdf English
Data Sheet - 1350G/1355G pdf English German
Data Sheet - 1358 pdf English
Installation & Operation Manual - 1250/1255 pdf English Japanese
Installation & Operation Manual - 1350G/1355G pdf English Japanese Russian
Installation & Operation Manual - 1358 pdf English