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Series-DTFW
Flowmeter for Liquids, ± 2% Accuracy, Metal, 3000 psig, 1/4" to 1" Conn.
Models In Stock
- 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
Series-DTFW
From
$
763.35
Models In Stock
Product Overview
- Accuracy ± 2 %
- Dial Dia 2.5 in
- Operating Temperature, Max 200 °F
- Operating Temperature, Min -40 °F
- Measurement Pressure Type Gauge
- Process Connection Type NPT Female
- Repeatability ± 1%
- Scale Media Calibration Water
- Series ID Series-DTFW
- Volumetric Flow Rate, Min 0 GPM
Supported Applications
The Dwyer Series DTFW Variable-Area Flowmeter for Liquids measures water flow rates with ±2% of full-scale accuracy. Designed for durable metal construction, the series ensures compatibility and strength to withstand system pressures up to 3000 psig (200 bar). The product overview indicates use in applications requiring economical liquid flow measurement across a wide variety of ranges.
Operating Conditions & Performance
The Series DTFW operates within a process temperature range of -40 to 200°F (-40 to 93°C). Accuracy is specified as ±2% FS for liquid/oil calibration, with repeatability at ±1% FS. Pressure ratings vary by model: the DTFW-3S models are rated to 1500 psig (100 bar), while all other Series DTFW models support up to 3000 psig (200 bar). The series is calibrated for horizontal in-line mounting.
Configuration Options
The series offers configurable dimensions and materials across three connection sizes: 1/4" NPT, 1/2" NPT, and 1" NPT. Model selection determines the specific flow range, body material, and metering cone composition.
- Flow Ranges: Available ranges include 0 to 1 GPM through 0 to 30 GPM water, depending on connection size and model configuration.
- Body Materials: Options include Brass (designated 'B' in models) or Stainless Steel ('S').
- Metering Cone Materials: Acetal is used for 1/4" and 1/2" connections; PTFE is specified for 1" NPT models.
- Wetted Parts: Components include a 302 SS spring, range spring (302 SS), PTFE-coated magnet, Acetal or PTFE metering cone, and Buna seals. The body is constructed from 316 SS or brass.
- Housing Dimensions: Overall dimensions vary by connection size; for example, the 1/4" NPT B-style case measures 3-19/32 [91.44] x 2-59/64 [74.17] x 1-11/16 [44.45].
- Weight: Weights range from 3 lb (1.36 kg) for DTFW-1B and 1S models to 10 lb (4.54 kg) for the DTFW-3S model.
Key Product Differences
The Series DTFW is distinguished from other series by its specific calibration for liquids, whereas related documentation notes a separate DTFA series calibrated for gases with ±5% FS accuracy. Within the DTFW liquid series, variations are defined by connection size and body material:
- 1/4" NPT Models (DTFW-1B/-1S): Offer ranges from 0 to 1 GPM up to 0 to 5 GPM. Bodies are available in Brass or Stainless Steel with Acetal metering cones.
- 1/2" NPT Models (DTFW-2B/-2S): Provide expanded flow capabilities, including ranges from 0 to 8 GPM and 0 to 10 GPM. Bodies are available in Brass or Stainless Steel with Acetal metering cones.
- 1" NPT Models (DTFW-3S): Designed for higher flows ranging from 0 to 10 GPM up to 0 to 30 GPM. These models feature a Stainless Steel body and PTFE metering cone, with a pressure rating of 1500 psig (100 bar).
PDFs & Manuals
