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Instantly add the Series HF In-Line Flow Monitor and 50,000+ more product series to your store or catalog  
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Dwyer In-Line Flow Monitor, Series HF

Series HF In-Line Flow Monitor

Brand: Dwyer Instruments, LLC
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The SERIES HF In-Line Flow Monitors are ruggedly constructed and ideal for direct measurement for a range of compatible gases, oil or water based liquids. 

This Series is designed based on a floating orifice disk and variable area flow measurement. Flowing media forces linear motion of the orifice disk and a ring shaped magnet which ride on a tapered center shaft.

The transfer magnet drives a clearly visible magnet follower located outside the flow tube, and a ring on the magnet follower indicates flow rate on the direct reading scale.
Features
  • This unique design allows accurate performance with fluid viscosities up to 500 SSU
  • All internal wetted parts are contained inside a sealed metal tubular casing assuring a virtually maintenance-free unit
  • Increased application versatility with no inlet or outlet straight plumbing requirement and can be mounted horizontally, vertically, or inverted
  • Rugged construction allows for high pressure and temperature rating for long operation life

1 - 12 of 84 Part Numbers
HFA-1-001
HFA-1-001
  • Body Material - Aluminum for Air & Other Non-Corrosive Gases
  • Connection Size - 1/4" Female NPT
  • Range - 1.5 to 12 SCFM (0.5 to 5.5 LPS)
HFA-1-002
HFA-1-002
  • Body Material - Aluminum for Air & Other Non-Corrosive Gases
  • Connection Size - 1/4" Female NPT
  • Range - 4 to 23 SCFM (2 to 10 LPS)
HFA-1-003
HFA-1-003
  • Body Material - Aluminum for Air & Other Non-Corrosive Gases
  • Connection Size - 1/4" Female NPT
  • Range - 5 to 50 SCFM (2.5 to 25 LPS)
HFA-1-004
HFA-1-004
  • Body Material - Aluminum for Air & Other Non-Corrosive Gases
  • Connection Size - 1/4" Female NPT
  • Range - 10 to 100 SCFM (5 to 45 LPS)
HFA-2-001
HFA-2-001
  • Body Material - Aluminum for Air & Other Non-Corrosive Gases
  • Connection Size - 1/2" Female NPT
  • Range - 1.5 to 12 SCFM (0.5 to 5.5 LPS)
HFA-2-002
HFA-2-002
  • Body Material - Aluminum for Air & Other Non-Corrosive Gases
  • Connection Size - 1/2" Female NPT
  • Range - 4 to 23 SCFM (2 to 10 LPS)
HFA-2-003
HFA-2-003
  • Body Material - Aluminum for Air & Other Non-Corrosive Gases
  • Connection Size - 1/2" Female NPT
  • Range - 5 to 50 SCFM (2.5 to 25 LPS)
HFA-2-004
HFA-2-004
  • Body Material - Aluminum for Air & Other Non-Corrosive Gases
  • Connection Size - 1/2" Female NPT
  • Range - 10 to 100 SCFM (5 to 45 LPS)
HFA-3-003
HFA-3-003
  • Body Material - Aluminum for Air & Other Non-Corrosive Gases
  • Connection Size - 3/4" Female NPT
  • Range - 5 to 50 SCFM (2.5 to 25 LPS)
HFA-3-004
HFA-3-004
  • Body Material - Aluminum for Air & Other Non-Corrosive Gases
  • Connection Size - 3/4" Female NPT
  • Range - 10 to 100 SCFM (5 to 45 LPS)
HFA-3-005
HFA-3-005
  • Body Material - Aluminum for Air & Other Non-Corrosive Gases
  • Connection Size - 3/4" Female NPT
  • Range - 15 to 150 SCFM (8 to 56 LPS)
HFA-3-006
HFA-3-006
  • Body Material - Aluminum for Air & Other Non-Corrosive Gases
  • Connection Size - 3/4" Female NPT
  • Range - 30 to 330 SCFM (20 to 150 LPS)
1 - 12 of 84 Part Numbers

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Specifications

Brand

Accuracy

  • ± 2.5 % over Center Third of the Measuring Range
  • ± 4 % of Full Scale over Entire Range

Enclosure, Body Material

  • 303 Stainless Steel - HFB (Wetted Material)
  • Aluminum - HFA (Wetted Material)

Flow Rate

  • 0.2 to 150 gpm (0.91 to 682 LPM) - Water
  • 0.5 to 25 gpm (2 to 115 LPM) - Oil
  • 1.5 to 900 scfh (0.05 to 32 L/minute) - Air & Non-Corrosive Gases

Maximum System Pressure

  • psi: 1,000 (bar: 69, kPa: 6,895) - HFS (Air & Gas)
  • psi: 600 (bar: 41, kPa: 4,137) - HFA, HFB, HFL, HFH (Air)
  • psig: 3,500 (kPa: 24.132, bar: 241) - Liquids
  • psig: 6,000 (kPa: 41,369, bar: 413) - Liquids

Media

  • Compatible Gases
  • Compatible Liquids

NPT Connection

  • 1” NPT Female
  • 1/2” NPT Female
  • 1/4” NPT Female
  • 1-1/2” NPT Female
  • 1-1/4” NPT Female
  • 2” NPT Female
  • 3/4” NPT Female
  • 3/8” NPT Female

Repeatability

  • ± 1 % of Full Scale

Seat / Seal Material

  • Buna-N

Temperature Range

  • 116° C (240° F)

Wetted Materials

  • FKM Seals with PTFE Backup
  • PTFE-Coated Alnico Magnet
  • Stainless Steel Disk

  • Setting Pressure Relief Valves
  • Fluid Handling Equipment
  • Detecting Low-Flow Rates for Lubricating Liquids
  • Pulp and Paper
  • Industrial Maintenance
  • Fluid Power
  • Heating Loop Flow

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Manuals

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