Dwyer PUF Series Portable Ultrasonic Flow Meter Kit

Wiratama Mitra Abadi 01 22.58 flow measurement,

Dwyer PUF Series Portable Ultrasonic Flow Meter Kit utilizes the transit-time difference for measuring flow rates in pipes non-invasively. It is a compact and lightweight instrument incorporating the latest electronics and signal processing technologies, realizing high performance and easy operation.

This device is capable of 20 hours of continuous operation with its built-in battery. The PUF comes with an IP67 rated carrying case with molded foam inserts to hold and protect all equipment against dust and water. The screen offers easy to read text with a convenient backlight for visual comfort. The efficient layout of the function keys add to this unit's easy-to-use programming. The unit comes with RS232 and USB connections to allow for easy connection to any personal computer or printer.

Dwyer PUF Series Features

Kit Includes:

Converter
Set of Transducers (Both Sets for Model PUF-1001)
Transducer Holders
Set Transducer Cables (6.56 ft (2 m))
USB, RS232, 4 to 20 mA Communication Cables
12 VDC Power Supply
Ultrasonic Coupling Grease
Set of Chains
Ruled Guide Rail
Test Block
Carrying Case

Principles of operation

Two sensors 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

Treated Water
River Water
Sea Water
Potable Water
Demineralized Water
Glycol/water mix
Hydraulic System
Diesel Oil

Dwyer PUF Series Specification

Service	Homogeneous liquids that do not contain air bubbles capable of ultrasonic wave propagation.
Inputs	Lemo connector cable from sensors.
Range	0.33 to 65.62 ft/s (0.1 to 20 m/s).
Accuracy	± 0.5 to 2% of flow reading for flow rate > 0.66 ft/s (0.2 m/s) and Pipe ID > 3 in (75 mm). ± 3% of flow reading for flow rate > 0.66 ft/s (0.2 m/s) and Pipe ID in range 0.5 to 3 in (13 to 75 mm). ± 6% of flow reading for flow rate < 0.66 ft/s (0.2 m/s).
Power Requirements	9 to 24 VDC; (1) 5-Cell NiMH battery, internal, factory replaceable (continuous operation time: 20 hours with back light and output off); (recharging time: 6.5 hours, power adapter used).
Power Consumption	10.5 W.
Power Adapter	110/240 VAC adapter; UK,US, European adapters included.
Temperature Limits	-4 to 275°F (-20 to 135°C).
Outputs	Analog: 1 opto-isolated output: 4 to 20 mA, 0 to 16 mA or 0 to 20 mA (selectable); Error current: 0 to 26 mA (selectable); Load resistance: 620 O max; Pulse: 1 opto-isolated MOSFET relay, 150 mA max, 500 pps max, 200 Hz max.
Serial Communications	USB; RS-232.
Enclosure Rating	Transducers: IP51; Carrying Case: IP67; Converter: IP54.
Materials	Flame retardant injection molded ABS plastic.
Repeatability	±0.5 % of measured value or ±0.066 ft/s (0.02 m/s).
Electrical Connections	Multi-pin Lemo plugs.