Dwyer Instruments SERIES DFMT, SERIES DFMT2 Catalog Page
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SERIES DFMT & DFMT2
DIGITAL PADDLEWHEEL FLOW TRANSMITTERS
FLOW
Flow and Total Indication, Easy to Read LCD Display, 4-20 mA or Pulse Output
Connection A B
3/8˝
1/2˝
3/4˝
1˝
DFMT DFMT
1-1/2˝
2˝
[100]
6˝ (152 mm)
6˝ (152 mm)
6-1/4˝ (158 mm)
6-1/4˝ (158 mm)
6-5/8˝ (168 mm)
7-1/4˝ (184 mm)
3-7/8˝
[100]
4-3/4˝ (121 mm)
5-1/8˝ (130 mm)
5-5/8˝ (142 mm)
5-1/2˝ (141 mm)
6-7/8˝ (175 mm)
6-7/8˝ (175 mm)
3-5/8
[93]
2-3/4
[68]
A
Flow Transmitters,
Paddlewheel, In-Line
3-7/8 [100]
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DFMT2
The Series DFMT Digital Paddlewheel Flow Transmitters provide instantaneous,
as well as totalizing ow monitoring. The unit offers a user selectable 4-20 mA or pulse
output with compact display.
FEATURES/BENEFITS
• The large backlit LCD display denes instantaneous as well as cumulative ow with
visual indication bar designating percent of max ow
• 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
APPLICATIONS
• Cooling towers
• Chemical proportioning or blending
• Industrial water and wastewater treatment
• Cooling water monitoring
• Fluctuating uid conductivity applications
• Reverse osmosis systems
The Series DFMT2 Remote Digital Paddlewheel Flow Transmitter provides
instantaneous, as well as totalizing ow monitoring. The unit offers a user selectable 4
to 20 mA or pulse output with remote display.
FEATURES/BENEFITS
• Two piece design allows the user to separate the control display from the application,
making it ideal in areas where space is limited
• The large backlit LCD display denes instantaneous as well as cumulative ow with
visual indication bar designating percent of max ow
• 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
APPLICATIONS
• Reverse osmosis systems
• Remote ow monitoring
• Cooling towers
• Chemical proportioning or blending
• Industrial water & wastewater treatment
• Cooling water monitoring
• Fluctuating uid conductivity applications
DWYER INSTRUMENTS, INC. | 284
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4-9/16 [115.89]
CABLE LENGTH
197˝ [5 m]
4-1/2
[114.30]
Remote mounting bracket
(stainless steel)
DFMT2
SPECIFICATIONS
Service: Compatible clean liquids.
Range: See model chart.
Wetted Materials: Sensor and impeller: PVDF; Shaft: Ceramic; O-rings:
Fluoroelastomer.
Accuracy: ±1.5% FS.
Repeatability: ±0.5% FS.
Output: 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).
Electrical Connections: Removable screw terminal.
Temperature Limits: Process: -4 to 194°F (-20 to 90°C); Ambient: -4 to 149°F (-20
to 65°C).
Pressure Limit: 145 psi (1.0 MPa).
Power Requirements: 12-24 VDC.
Power Consumption: 2 W.
Display: 2.38 x 1.25˝ (60.33 x 31.75 mm) LCD.
Totalizing Display Maximum: 9,999,999,999.
Process Connection: See model chart.
Enclosure Rating: IP65.
Enclosure Material: ABS plastic.
Weight: See model chart.
MODEL CHART
Model Range GPM (m
DFMT-10A
DFMT-15A
DFMT-20A
DFMT-25A
DFMT-40A
DFMT-50A
0.44 to 7.93 (0.1 to 1.8)
0.88 to 17.61 (0.2 to 4)
1.32 to 26.42 (0.3 to 6)
2.20 to 52.83 (0.5 to 12)
6.61 to 105.67 (1.5 to 24)
8.81 to 176.11 (2 to 40)
MODEL CHART
Model Range GPM (m
DFMT2-10A
DFMT2-15A
DFMT2-20A
DFMT2-25A
DFMT2-40A
DFMT2-50A
0.44 to 7.93 (0.1 to 1.8)
0.88 to 17.61 (0.2 to 4)
1.32 to 26.42 (0.3 to 6)
2.20 to 52.83 (0.5 to 12)
6.61 to 105.67 (1.5 to 24)
8.81 to 176.11 (2 to 40)
3
/h) Connection Weight lb (kg)
3/8˝ NPT
1/2˝ NPT
3/4˝ NPT
1˝ NPT
1-1/2˝ NPT
2˝ NPT
3
/h) Connection Weight lb (kg)
3/8˝ NPT
1/2˝ NPT
3/4˝ NPT
1˝ NPT
1-1/2˝ NPT
2˝ NPT
1.06 (0.48)
1.10 (0.5)
1.15 (0.52)
1.23 (0.56)
1.46 (0.66)
1.68 (0.76)
1.76 (0.8)
1.81 (0.82)
1.85 (0.84)
1.94 (0.88)
2.20 (1.0)
2.43 (1.1)
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