Dwyer Model UFM Compact Ultrasonic Flow Meter

Wiratama Mitra Abadi 01 22.55 flow measurement,

Dwyer Model UFM Compact Ultrasonic Flow Meter Flow Meter is a low cost clamp-on, ultrasonic flowmeter. The Model UFM implements the transit-time difference to measure flow rates in pipes non-invasively. It is a 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 117.35 mm). The screen offers easy to read text with a convenient backlight for visual comfort. This model comes with a volume pulse and 4 to 20 mA flow rate output.

Dwyer Model UFM Compact Features

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 flow rate and total with a convenient backlight for visual comfort
Kit Includes:
Converter w/ 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

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 flowmeter to be unaffected by pressure or temperature changes.

Application

Flow measurement for heat metering
Chilled water metering and monitoring
Potable water metering and monitoring
Process water metering and monitoring

Dwyer Model UFM Compact Specification

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 flow reading for > 0.98 ft/s (> 0.3 m/s).
Power Requirements	12 to 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 O max;
	Pulse: 1 opto-isolated 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.