Monitoring Water Usage with Loop Powered Flow Transmitter

Application
Measuring flow of domestic water use in each of the buildings located on a university campus in Connecticut.

Background
The university hired an outside contractor to replace existing paddlewheel flowmeters at various locations across the campus. The paddlewheel flowmeters were unreliable and required frequent maintenance and replacement.

Advantages
The UTX878 appealed to the customer as an economical non-intrusive, maintenance-free alternative to the paddlewheel flowmeters. Since the UTX878 does not come into contact with the process, there is no danger of clogging and does not require shutting down the process.

The UTX878 was also easily powered using the existing 24 VDC supply. Approximately 50 units were purchased and installed.

Installation
Most of the UTX878 installation locations were on Type L copper pipe ranging from 2 to 6 in. (50 mm to 150 mm) outside diameters. The transducers and fixture were typically installed after the system back-flow preventer. The UTX878 meter electronics was powered by 24 VDC from the existing data acquisition panel located in each building.

Equipment
Measurements were taken with the UTX878 Loop Powered Flow Transmitter with UTX clamping fixture with #407 2 MHz transducers.



Specifications
Pipe OD: 2 to 6 in. (50 mm to 150 mm)
Pipe Wall: 0.070 to .140 in. (1.8 to 3.5 mm)
Pipe Material: Type L Copper
Pressure: 0 to 10 psig (0 to 1.07 bar)
Temperature: 50oF (10oC)

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