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Series DTFF Fixed-Orifice Flowmeter

Brand: Dwyer Instruments, LLC

The Series DTFF Fixed-Orifice Flowmeter for Low Flow Rates measures water, oil, or air flow rates with great accuracy at a competitive price.

Rugged stainless steel construction ensures great compatibility and is an excellent choice for high line pressure applications, with a maximum pressure of 3,000 psig (200 bar). 

This is all without sacrificing the sensitivity required for low flow measurements. Available in a wide range of flow rates for each calibration, with stainless steel construction as standard. Comes pre calibrated for horizontal in-line mounting.
Features
  • Rugged Stainless Steel construction ensures great compatibility and is an excellent choice for high line pressure applications, with a maximum pressure of 3000 psig (200 bar)
  • High Sensitivity for low flow measurement
  • Shatter proof construction, unlike glass tube variable area flowmeters, yields long operation life

1 - 12 of 20 Part Numbers
DTFF-1S-10O
DTFF-1S-10O
  • Calibration - Oil
  • Range - 0 to 10 GPH
DTFF-1S-10W
DTFF-1S-10W
DWYER Range 0-10 GPH, Water Calibration, 1/4" NPT
  • Calibration - Water
  • Range - 0 to 10 GPH
DTFF-1S-15O
DTFF-1S-15O
  • Calibration - Oil
  • Range - 0 to 15 GPH
DTFF-1S-15W
DTFF-1S-15W
DWYER Range 0-15 GPH, Water Calibration, 1/4" NPT
  • Calibration - Water
  • Range - 0 to 15 GPH
DTFF-1S-20O
DTFF-1S-20O
  • Calibration - Oil
  • Range - 0 to 20 GPH
DTFF-1S-20W
DTFF-1S-20W
  • Calibration - Water
  • Range - 0 to 20 GPH
DTFF-1S-25O
DTFF-1S-25O
  • Calibration - Oil
  • Range - 0 to 25 GPH
DTFF-1S-25W
DTFF-1S-25W
DWYER Range 0-25 GPH, Water Calibration, 1/4" NPT
  • Calibration - Water
  • Range - 0 to 25 GPH
DTFF-1S-40O
DTFF-1S-40O
  • Calibration - Oil
  • Range - 0 to 40 GPH
DTFF-1S-40W
DTFF-1S-40W
DWYER Range 0-40 GPH, Water Calibration, 1/4" NPT
  • Calibration - Water
  • Range - 0 to 40 GPH
DTFF-1S-4O
DTFF-1S-4O
  • Calibration - Oil
  • Range - 0 to 4 GPH
DTFF-1S-4W
DTFF-1S-4W
DWYER Range 0-4 GPH, Water Calibration, 1/4" NPT
  • Calibration - Water
  • Range - 0 to 4 GPH
1 - 12 of 20 Part Numbers

Specifications

Accuracy

  • ± 2 % of Full Scale - Liquid/Oil Calibration
  • ± 5 % of Full Scale - Air Calibration

Applications

  • Backflow Prevention
  • Heat Exchangers
  • Low Flow Monitoring based on Differential Pressure
  • Monitoring Low Pressure Drop Across Filters or Strainers
  • Oil & Gas Equipment

Diaphragm Material

  • Fluoroelastomer

Enclosure, Body Material

  • 316 Stainless Steel

Flow Rate

  • 0 to 40 gph (0 to 3 LPM) - Water & Oil
  • 1.5 to 5 scfm (3 to 9 m³/hour) - Air

Maximum System Pressure

  • psi: 3,000 (bar: 206.8, kPa: 20,680)

Media

  • Compatible Gases
  • Compatible Liquid
  • Compatible Oil

NPT Connection

  • 1/4” NPT Female

Orifice Material

  • Acetal - Orifice Piston

Repeatability

  • ± 1 % of Full Scale

Size

  • Dial: 2.5” (63 mm)

Spring Material

  • 302 Stainless Steel - Spring, Range Spring

Temperature Range

  • -30° to 93° C (-22° to 200° F)

Wetted Materials

  • PTFE-Coated

  • Backflow Prevention
  • Heat Exchangers
  • Low Flow Monitoring based on Differential Pressure
  • Monitoring Low Pressure Drop Across Filters or Strainers
  • Oil & Gas Equipment
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