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Series-DFMT
Digital Paddlewheel Flow Transmitter, 4-20 mA/Pulse Output, Compact Display
- The large backlit LCD display defines instantaneous as well as cumulative flow with visual indication bar designating percent of max flow
- Long operation life with high accuracy paddlewheel technology and corrosion resistant PVDF sensor
- Totalizer is user resettable at any time ideal for single batch totalization
- Security password protecting prevents any unauthorized changes
Series-DFMT
From
TWD
46,861
Product Overview
- Accuracy ± 1.5 %
- Display Note 2.38 x 1.25˝ (60.33 x 31.75 mm) LCD, Totalizing Display Maximum: 9,999,999,999
- Display Type LCD
- Electrical Connection Removable Screw Terminal
- Enclosure Ratings IP65
- Materials ABS
- Materials, Wetted Ceramic, Fluorosilicone, PVDF
- Media Compatibility Clean process / cooling water, Compatible Liquids, Oils / lubricants, Organic solvents
- Operating Temperature, Max 149 °F
- Operating Temperature, Min -4 °F
- Output Detail Analog: 4-20 mA (750 Ω max. loop resistance); Pulse: NPN square wave output; Frequency: 0 to 2 kHz (adjustable); Pulse width: 0 to 1000 ms (adjustable)
- Output Signal Current, DC Pulse
- Power Consumption 2 W
- Pressure Limits Up to 145 psi
- Process Connection Type NPT Male
- Process Temperature, Max 194 °F
- Process Temperature, Min -4 °F
- Repeatability ± 0.5%
- Series ID Series-DFMT
- Supply Power Type DC
- Supply Voltage 12 to 24 Vdc
Supported Applications
The Series DFMT Digital Paddlewheel Flow Transmitter provides instantaneous and totalizing flow monitoring for commercial and industrial systems. The unit is designed to measure compatible clean liquids using high accuracy paddlewheel technology.
Operating Conditions & Performance
The series operates within a process temperature range of -4 to 194°F (-20 to 90°C) and an ambient temperature range of -4 to 149°F (-20 to 65°C). It is rated for pressures up to 145 psi (1.0 MPa). Performance specifications include an accuracy of ±1.5% FS and repeatability of ±0.5% FS.
Measurement ranges vary by model, spanning from 0.44 to 7.93 GPM (0.1 to 1.8 m³/h) up to 8.81 to 176.11 GPM (2 to 40 m³/h). The unit features a large backlit LCD display with resolution of up to 3 decimal points for both flow and totalization units, supporting a maximum totalizing value of 9,999,999,999.
Installation notes indicate that accuracy can be affected by disturbances such as pumps, elbows, tees, and valves. Recommended straight pipe runs are provided in the documentation. The meter should be mounted in a full flow pipe; vertical mounting is acceptable if liquid flows through the meter or sufficient back pressure exists on downward flow.
Configuration Options
The Series DFMT offers configurable process connections and output signals to accommodate specific system requirements.
- Process Connections: Available in 3/8" NPT, 1/2" NPT, 3/4" NPT, 1" NPT, 1-1/2" NPT, and 2" NPT sizes.
- Output Signals: User selectable between Analog (4 to 20 mA with 750 Ω max. loop resistance) or Pulse output (NPN square wave). The pulse frequency is adjustable from 0 to 2 kHz, and the pulse width is adjustable from 0 to 1000 ms.
- Power Supply: Requires 12-24 VDC with a power consumption of 2 W.
- Enclosure & Materials: The housing is constructed of ABS plastic with an IP65 enclosure rating. Wetted materials include PVDF for the sensor and impeller, Ceramic for the shaft, and Fluoroelastomer O-rings.
The unit features a removable screw terminal electrical connection. Users can reset the totalizer at any time and set a security password to protect settings from unauthorized changes.
Key Product Differences
The series includes two distinct display configurations: the DFMT with a compact integrated display, and the DFMT2 which utilizes a remote mounting bracket for the display. The DFMT housing dimensions are 3-7/8" [100] x 3-7/8" [100], while the DFMT2 includes a stainless steel remote mounting bracket with a cable length of 197" (5 m) and overall dimensions of 4-1/2" [114.30] x 4-9/16" [115.89].
Model numbers follow the format DFMT or DFMT2 followed by a range code and connection size (e.g., DFMT-10A for 3/8" NPT). Weights vary by model, ranging from 1.06 lb (0.48 kg) for the smallest DFMT unit to 2.43 lb (1.1 kg) for the largest DFMT2 configuration.
PDFs & Manuals
