Key Specifications/Special Features:

The model UFM ultrasonic flow meter implements the transit-time difference to measure flow rates in pipes non-invasively
Compact and lightweight design, featuring an easily installed, all in one clamp-on unit
This unit can measure velocity and flow in pipes with outside diameters ranging from 0.98 to 4.62" (24.89 to 117.35mm)
Screen offers easy to read text with a convenient backlight for visual comfort
This model comes with a volume pulse and 4 to 20mA flow rate output
Principles of operation:
Two sensors located in the guiderail are placed on the exterior of the pipe, and each transmits an ultrasonic pulse through the pipe and fluid to the other
The velocity of the liquid flowing through the pipes causes the pulse to accelerate or decelerate
The difference in the transit times of the two pulses is used to calculate the flow rate
The use of transit time allows the flow meter to be unaffected by pressure or temperature changes
Specifications:
Service: clean water with <3% by volume of particulate content
Range: 0.33 to 32.8ft/s (0.1 to 10m/s)
Display:
Backlit: 3.27" H x 0.74" W (83.1mm x 18.8mm), 2 line x 16 characters
Accuracy: ±3% of flow reading for >0.98ft/s (> 0.3m/s)
Power requirements: 12 to 24V DC or AC
Power consumption: 7W 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 20mA
Error current: 3.5mA
Load resistance: 620Ω max
Pulse: 1 opto-isolated MOSFET relay, 500mA max, 166pps max, 200Hz max
Enclosure rating: IP54
Enclosure material: plastic polycarbonate
Repeatability: ±0.5% of measured value
Electrical connections: 16.4' (5m) cable
Response time: <1s
Weight: 2.9lbs (1.315kg)
Agency approvals: CE
Applicable pipe material: steel, copper, or plastic
Pipe outside diameter: 0.98 to 4.62 (24.89 to 117.35mm)