DWYER DTFW Variable Area Flowmeter

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Description

Series DTFW Variable-Area Flowmeter for Liquids In-Line Mounting, 2% FS Accuracy

 

DWYER DTFW Variable Area Flowmeter  measures water flow rates with ± 2% of full-scale accuracy at a competitive price. DWYER DTFW Variable Area Flowmeter  durable metal construction ensures great compatibility and the strength to withstand system pressures of up to 3000 psig (200 bar). 1/4″, 1/2″ and 1″ connections are available, with construction choices of a high quality brass or stainless steel. Comes pre-calibrated for horizontal in-line mounting.

 

Product Applications

  • Monitoring pressure drop across filters or strainers
  • Flow scale based on differential pressure
  • Liquid level given pressure differential between bottom and top of tank
  • Hydraulic equipment
  • Oil & gas equipment
  • Heat exchangers
  • Backflow prevention

 

Features

  • Durable metal construction ensures great reliability and the strength to withstand system pressures of up to 3000 psig (200 bar)
  • Shatter proof construction, unlike glass tube variable area flowmeters, yields long operation life
  • Preform precisely in high temperature, high vibration, shock-prone environments

 

Specifications

  • Service: DTFW: Compatible liquids; DTFA: Compatible gases.
  • Wetted Materials: Body: 316 SS, brass or aluminum; Spring: 302 SS or PTFE-coated; Range spring: 302 SS; Magnet: PTFE-coated; Metering cone: Acetal or PTFE; Seals: Buna.
  • Temperature Limits: -40 to 200°F (-40 to 93°C).
  • Pressure Limits: DTFW-3S: 1500 psig (100 bar); All other DTFW models: 3000 psig (200 bar); DTFA: 3000 psig (200 bar).
  • Accuracy: Liquid/oil calibration: ±2% FS; Air calibration: ±5% FS.
  • Repeatability: ±1% FS.
  • Size: Diameter dial face 2.5″ (63.5 mm).
  • Process Connection: See model chart on catalog page.
  • Weight: DTFW-1B and 1S: 3 lb (1.36 kg); DTFW-2B and 2S: 5 lb (2.27 kg); DTFW- 3S: 10 lb (4.54 kg); DTFA-1A: 3 lb (1.36 kg); DTFA-2A: 5 lb (2.27 kg).

 

Models & Ordering

1/4″ NPT Connection, Brass body

Model Description
DTFW-1B-1W Range 0-1 GPM water, 1/4″ npt, brass body
DTFW-1B-2W Range 0-2 GPM water, 1/4″ npt, brass body
DTFW-1B-3W Range 0-3 GPM water, 1/4″ npt, brass body
DTFW-1B-4W Range 0-4 GPM water, 1/4″ npt, brass body
DTFW-1B-5W Range 0-5 GPM water, 1/4″ npt, brass body

 

1/4″ NPT Connection, SS Body

Model Description
DTFW-1S-1W Range 0-1 GPM water, 1/4″ npt, ss body
DTFW-1S-2W Range 0-2 GPM water, 1/4″ npt, ss body
DTFW-1S-3W Range 0-3 GPM water, 1/4″ npt, ss body
DTFW-1S-4W Range 0-4 GPM water, 1/4″ npt, ss body
DTFW-1S-5W Range 0-5 GPM water, 1/4″ npt, ss body

 

1/2″ NPT Connection, Brass body

Model Description
DTFW-2B-10W Range 0-10 GPM water, 1/2″ npt, brass body
DTFW-2B-1W Range 0-1 GPM water, 1/2″ npt, brass body
DTFW-2B-2W Range 0-2 GPM water, 1/2″ npt, brass body
DTFW-2B-3W Range 0-3 GPM water, 1/2″ npt, brass body
DTFW-2B-4W Range 0-4 GPM water, 1/2″ npt, brass body
DTFW-2B-5W Range 0-5 GPM water, 1/2″ npt, brass body
DTFW-2B-8W Range 0-8 GPM water, 1/2″ npt, brass body

 

1/2″ NPT Connection, SS Body

Model Description
DTFW-2S-10W Range 0-10 GPM water, 1/2″ npt, ss body
DTFW-2S-1W Range 0-1 GPM water, 1/2″ npt, ss body
DTFW-2S-2W Range 0-2 GPM water, 1/2″ npt, ss body
DTFW-2S-3W Range 0-3 GPM water, 1/2″ npt, ss body
DTFW-2S-4W Range 0-4 GPM water, 1/2″ npt, ss body
DTFW-2S-5W Range 0-5 GPM water, 1/2″ npt, ss body
DTFW-2S-8W Range 0-8 GPM water, 1/2″ npt, ss body

 

1″ NPT Connection, SS body

Model Description
DTFW-3S-10W Range 0-10 GPM water, 1″ npt, ss body
DTFW-3S-15W Range 0-15 GPM water, 1″ npt, ss body
DTFW-3S-20W Range 0-20 GPM water, 1″ npt, ss body
DTFW-3S-25W Range 0-25 GPM water, 1″ npt, ss body
DTFW-3S-30W Range 0-30 GPM water, 1″ npt, ss body

 

Additional information

Model

DTFW-1B-1W, DTFW-1B-2W, DTFW-1B-3W, DTFW-1B-4W, DTFW-1B-5W, DTFW-1S-1W, DTFW-1S-2W, DTFW-1S-3W, DTFW-1S-4W, DTFW-1S-5W, DTFW-2B-10W, DTFW-2B-1W, DTFW-2B-2W, DTFW-2B-3W, DTFW-2B-4W, DTFW-2B-5W, DTFW-2B-8W, DTFW-2S-10W, DTFW-2S-1W, DTFW-2S-2W, DTFW-2S-3W, DTFW-2S-4W, DTFW-2S-5W, DTFW-2S-8W, DTFW-3S-10W, DTFW-3S-15W, DTFW-3S-20W, DTFW-3S-25W, DTFW-3S-30W

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