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Series-DTFF
Low Flow Fixed-Orifice Flowmeter – Stainless Steel, 3000 psi, Pre-Calibrated
- High-accuracy paddle flow switch for non-coating liquids with adjustable trip point
- SPDT switch output with LED status indicator for instant flow condition feedback
- Compact body supports pressures up to ~150 psi and temperatures to ~200 °F
- Minimal pressure drop design - ideal for pump protection and low-flow monitoring
Series-DTFF
From
C$
1,886.61
Product Overview
- Dial Dia 2.5 in
- Operating Temperature, Max 200 °F
- Operating Temperature, Min -22 °F
- Pressure Limits Up to 3000 psi
- Measurement Pressure Type Gauge
- Process Connection Size 1/4 in
- Process Connection Type NPT Female
- Repeatability ± 1%
- Series ID Series-DTFF
- Weight 4 lb
Supported Applications
The Dwyer Series DTFF Fixed-Orifice Flowmeter is designed for measuring low flow rates of water, oil, and air. The series provides pre-calibrated measurement capabilities suitable for applications requiring high line pressure tolerance up to 3000 psig (200 bar) while maintaining sensitivity for lower volume flows.
Operating Conditions & Performance
The Series DTFF operates within a process temperature range of -22 to 200°F (-30 to 93°C). Accuracy is specified as ±2% FS for liquid and oil calibrations, and ±5% FS for air calibration. Repeatability is rated at ±1% FS.
Available measurement ranges include:
- Liquid (Water): 0 to 2 GPH through 0 to 40 GPH
- Oil: 0 to 2 GPH through 0 to 40 GPH
- Air: 1.5 to 5 SCFM
The unit is rated for a maximum pressure of 3000 psig (200 bar). Installation requires horizontal mounting; the flowmeters are calibrated at the factory specifically for this orientation.
Configuration Options
The series features rugged stainless steel construction with specific wetted materials selected for compatibility:
- Body: 316 SS
- Springs (Standard and Range): 302 SS
- Magnet: PTFE-coated
- Orifice Piston: Acetal
- Diaphragm: Fluoroelastomer
The device utilizes a magnetic coupling system. To minimize external interference, the documentation advises keeping magnetic materials at least 3 inches (7.6 cm) away from the unit.
Physical Specifications and Connections
- Process Connection: 1/4" female NPT
- Dial Face Diameter: 2.5" (63.5 mm)
- Overall Dimensions: Length varies from 1-7/8" [47.75] to 2-11/32" [59.44]; Width is 1-1/2" [38.10]
- Weight: 4 lb (1.81 kg)
The Series DTFF requires no lubrication or periodic servicing and is not field serviceable; units requiring repair must be returned to the factory.
Key Product Differences
Variants within the series are distinguished by their calibrated media type (Water, Oil, Air) and specific flow range. Model numbers follow a format indicating these parameters, such as DTFF-1S-4W for 0 to 4 GPH Water or DTFF-1S-5A for 1.5 to 5 SCFM Air.
Selection is driven by the required media and flow rate envelope:
- Liquid Models (Water/Oil): Offered in discrete ranges from 0 to 2 GPH up to 0 to 40 GPH. Model suffixes typically denote 'W' for Water or 'O' for Oil.
- Air Models: Available specifically in the 1.5 to 5 SCFM range, designated with an 'A' calibration code (e.g., DTFF-1S-5A).
PDFs & Manuals
