Dwyer Instruments SERIES DTFW, SERIES DTFA Catalog Page

& OUTLET

[17.53]

[76.20]

SERIES DTFW & DTFA

VARIABLE-AREA FLOWMETERS

FLOW

In-Line Mounting, Gas, Liquids and Oils

DTFW

5-47/64 [145.54]

DTFA

The Series DTFW Variable-Area Flowmeters for Liquids and Oils measure water or

oil ow rates with ± 2% of full-scale accuracy at a competitive price. Available in 1/4˝, 1/2˝ and 1˝ connections for a wide variety of applications and comes calibrated for

horizontal in line mounting.

The Series DTFA Variable-Area Flowmeters for Gases measures gas ow rates with

±5% of full-scale accuracy at an affordable price. Available in either 1/4˝ or 1/2˝ NPT connections and comes pre-calibrated for horizontal in-line mounting.

FEATURES/BENEFITS

• 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 owmeters, yields long operation life

• Preform precisely in high temperature, high vibration, shock-prone environments

APPLICATIONS

• Monitoring pressure drop across lters or strainers

• Flow scale based on differential pressure

• Liquid level given pressure differential between bottom and top of tank

Flowmeters,

• Hydraulic equipment

• Oil and gas equipment

Variable Area & In-Line

• Heat exchangers

• Backow prevention

1/2˝ NPT process connection 1/4˝ NPT connection

Ø2-59/64

[74.17]

1/4˝ NPT 1/4˝ NPT 1/4˝ NPT 1/4˝ NPT 1/2˝ NPT 1/2˝ NPT 1/2˝ NPT 1/2˝ NPT 1/2˝ NPT

5-47/64 [145.54]

[25.40]

11/16

[17.53]

Ø2-59/64

[74.17]

3/4

[19.05]

[50.80]

1/4˝ NPT INLET & OUTLET

[74.17]

[25.40]

[19.05]

11/16

3-19/32

[91.44]

1.5 to 10

2.0 to 15

3.0 to 20

3.0 to 25

3.0 to 30

4.0 to 40

4.0 to 50

5.0 to 75

10.0 to 100

3/4

[50.80]

1/4˝ NPT INLET & OUTLET

Aluminum Aluminum Aluminum Aluminum Aluminum Aluminum Aluminum Aluminum Aluminum

3-19/32

[91.44]

Ø2-59/64

[76.20]

1/4˝ NPT connection 1/2˝ NPT connection

1/2˝ NPT

INLET & OUTLET

Ø2-59/64

[74.17]

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 Limit: 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. 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).

MODEL CHART Model Range, SCFM Body Connection DTFA-1A-10A

DTFA-1A-15A DTFA-1A-20A DTFA-1A-25A DTFA-2A-30A DTFA-2A-40A DTFA-2A-50A DTFA-2A-75A DTFA-2A-100A

INLET

1/2˝ NPT

MODEL CHART

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-1W DTFW-2B-2W DTFW-2B-3W DTFW-2B-4W DTFW-2B-5W

Note: Not available in 1/4˝ or 1/2˝ SS.

Range GPM Water

0 to 1 0 to 2 0 to 3 0 to 4 0 to 5 0 to 1 0 to 2 0 to 3 0 to 4 0 to 5 0 to 1 0 to 2 0 to 3 0 to 4 0 to 5

Connection NPT Body

1/4˝ 1/4˝ 1/4˝ 1/4˝ 1/4˝ 1/4˝ 1/4˝ 1/4˝ 1/4˝ 1/4˝ 1/2˝ 1/2˝ 1/2˝ 1/2˝ 1/2˝

DWYER INSTRUMENTS, INC. 266

Brass Brass Brass Brass Brass SS SS SS SS SS Brass Brass Brass Brass Brass

Metering Cone Model

Acetal Acetal Acetal Acetal Acetal Acetal Acetal Acetal Acetal Acetal Acetal Acetal Acetal Acetal Acetal

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

Range GPM Water

0 to 8 0 to 10 0 to 1 0 to 2 0 to 3 0 to 4 0 to 5 0 to 8 0 to 10 0 to 10 0 to 15 0 to 20 0 to 25 0 to 30

Connection NPT Body

1/2˝ 1/2˝ 1/2˝ 1/2˝ 1/2˝ 1/2˝ 1/2˝ 1/2˝ 1/2˝ 1˝ 1˝ 1˝ 1˝ 1˝

USA: California Proposition 65 WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

Brass Brass SS SS SS SS SS SS SS SS SS SS SS SS

Metering Cone

Acetal Acetal Acetal Acetal Acetal Acetal Acetal Acetal Acetal PTFE PTFE PTFE PTFE PTFE