The new PTFM 1.0 Portable Transit Time Flow Meter is designed to accurately measure clean liquids like water, oils and chemicals from outside a pipe. It is ideal for calibrations, troubleshooting, spot checks and balancing flow. Set-up through the handheld meter is fast with a user-friendly, five-key menu system. The clamp-on transducers mount on plastic or metal pipes and ultrasonic signals are injected through the pipe between the two sensors. It works on full pipes with diameters from ½- to 48 inches. The Greyline PTFM 1.0 features a large backlit display, totalizer, 4-20mA output and a data logger with USB output and powerful Windows software. It operates for 24 hours on internal rechargeable batteries and push-button sleep mode extends battery life for longer periods of operation. The flowmeter and accessories come complete with a rugged, watertight carry case.