Dwyer PUF-1001 is a Portable Ultrasonic Flowmeter Kit with a temperature range of -4 to 275°F (-20 to 135°C). It offers high accuracy readings of ±0.5% to 2% for flow rates above 0.66 ft/s (0.2 m/s) and pipe ID above 3 in (75 mm). The flowmeter has a quick response time of less than 500 ms and a wide range of 0.33 to 65.62 ft/s (0.1 to 20 m/s). It is powered by a 5-cell NiMH battery with a continuous operation time of 20 hours and can be recharged in 6.5 hours. This flowmeter has an IP51 enclosure rating for the transducers and IP54 for the converter, ensuring durability. It offers multiple electrical connections, including analog and pulse outputs. The flowmeter is suitable for use with homogeneous liquids without air bubbles capable of ultrasonic wave propagation. It consumes 10.5 W of power and features a 240 x 64 pixel graphic display with a backlight and multiple language options. The Dwyer PUF-1001 has a repeatability of ±0.5% and is made of flame retardant injection molded ABS plastic. It offers USB and RS-232 communication options and is compatible with various pipe materials and linings. It has a permissible air content of less than 3% and offers accurate readings even in the presence of turbidity. The flowmeter comes with a power adapter, making it suitable for use worldwide.