Dwyer Instruments UFM Catalog Page

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MODEL UFM

COMPACT ULTRASONIC FLOWMETERS

Cost Effective, Compact and Adjustable Design, Non-Invasive

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FEMALE SMB
COAXIAL
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SHIELD

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16.4´
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FLOW

The Model UFM Compact Ultrasonic Flowmeters are economical, clamp-on,

ultrasonic owmeter. The Model UFM implements the transit-time difference to
measure ow rates in pipes and can measure velocity and ow in pipes with outside
diameters ranging from 0.98 to 4.62˝ (24.89 to 117.35 mm). This model comes with a
volume pulse and 4-20 mA ow rate output.

FEATURES/BENEFITS

• Non-invasive pipe measurement

• Simple installation with all necessary components included such as converter,
sensor, cables and mounting accessories

• Compact and lightweight design, featuring an easily installed, all in one clamp-on
unit intended for homogeneous liquids that contain no air

• Screen offers easy to read text displaying both ow rate and total with a convenient

backlight for visual comfort

APPLICATIONS

• Flow measurement for heat metering

• Chilled water metering and monitoring

• Potable water metering and monitoring

• Process water metering and monitoring

KIT INCLUDES

• Converter with adjustable guiderail

• Set of 1.81 to 2.75˝ (46 to 70 mm) clamps

• Set of 2 to 5˝ (51 to 127 mm) clamps

• Set of small pipe adaptor circle clamps

• Set of small pipe adaptor V clamps

• Ultrasonic coupling grease

MODEL CHART
Model Description
UFM-1 Compact ultrasonic owmeter

SPECIFICATIONS
Service: Clean water with < 3% by

volume of particulate content.
Range: 0.33 to 32.8 ft/s (0.1 to 10 m/s).
Display: Backlit: 3.27˝ H x 0.74˝ W (83.1

mm x 18.8 mm), 2 line x 16 characters.
Accuracy: ±3% of ow reading for > 0.98
ft/s (> 0.3 m/s).
Power Requirements: 12-24 VDC or

VAC.
Power Consumption: 7 W max.
Temperature Limits: Process: 32 to

185°F (0 to 85°C); Ambient: 32 to 122°F
(0 to 50°C).
Outputs: Analog: 1 opto-isolated: 4
to 20 mA; Error current: 3.5 mA; Load
resistance: 620 Ω max; Pulse: 1 opto­isolated MOSFET relay, 500 mA max,
166 pps max, 200 Hz max.

Enclosure Rating: IP54.
Enclosure Material: Plastic

polycarbonate.

Repeatability: ±0.5% of measured value.
Electrical Connections: 16.4´ (5 m)
cable.
Response Time: < 1 s.
Weight: 2.9 lb (1.315 kg).
Agency Approvals: CE.

ADDITIONAL SPECIFICATIONS
Applicable Pipe Material: Steel, copper,

or plastic.

Pipe Outside Diameter: 0.98 to 4.62˝
(24.89 to 117.35 mm).

Applicable Pipe Lining: None.
Pipe Wall Thickness: 0.02 to 0.39˝ (0.5

to 10 mm).

OPTIONS
Use order code: Description
NISTCAL-FU NIST traceable calibration certicate

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

Flow Transmitters,

Ultrasonic