1. Introduction
The TF1100-CH series Handheld Ultrasonic Flow Meter feature advanced Transit-Time measuring technology, delivering high precision flow rate.As a non-invasive and battery powered ultrasonic flow meter, the TF1100-CH series utilizes non-invasive transducers that can be hand-held or strapped to the outside of a pipe—eliminating the need for pipe modification and offering the benefits of non-fouling operation and ease of installation. Designed as a chemical resistant ultrasonic flow meter, it accommodates a variety of liquid applications, including ultra-pure liquids, potable water, chemicals, raw sewage, reclaimed water, cooling water, river water, plant effluent, etc. Unlike traditional inline ultrasonic flow meter, its external mounting provided by Lanry Instruments design avoids direct contact with media while maintaining measurement reliability.
Features
• 14 hours battery (rechargeable), back-lit 4 lines display.
• Data logger function.
• Can be used for mobile measurement, flow rate calibration, data comparing, meters running status checking.
• Non-invasive transducers.
• Wide bi-directional flow range of 0.01 m/s to 12m/s. Wide liquid temperature range: -35°C~200°C.
• Works reliably in both clean and somewhat dirty liquids with turbidity<10000ppm.
• Lightweight and easily transportable in box.
2. Core Measurement Principle
Different from the principle of Doppler flow meters, the TF1100-CH transit time flow meter uses two transducers that act as both ultrasonic transmitters and receivers, clamped externally on a closed pipe at a specific distance. Three mounting methods are available: V-method (sound traverses the pipe twice), W-method (four times), and Z-method (transducers mounted on opposite sides, sound crosses once), with selection based on pipe and liquid characteristics. The meter operates by alternately transmitting/receiving frequency-modulated sound bursts between the two transducers, measuring the transit time difference—which is directly and precisely related to the liquid velocity in the pipe.
3. Wide Range of Applications
Thanks to its unique working principle, the Battery Powered Ultrasonic Flow Meter TF1100-CH series excels in many applications where traditional flow meters struggle, including:
l Water and waste water industry - hot water, cooling water, potable water, sea water, etc
l Petrochemical industry
l Chemical industry -chlorine, alcohol, acids, thermal oils, etc
l Refrigeration and air conditioning systems
l Food, beverage and pharmaceutical industry
l Power supply- nuclear power plants, thermal & hydro-power plants, heat energy boiler feed water, etc
5. In summary
The TF1100-CH series Handheld Ultrasonic Flow Meter, adopting advanced transit-time technology, achieves high-precision flow measurement. Its non-invasive design with external transducers avoids pipe modification and media contact, ensuring easy installation and non-fouling operation. Equipped with a long-lasting rechargeable battery, data logging function and wide adaptability to flow, temperature and liquid turbidity, it supports mobile measurement and various on-site tasks. With strong chemical resistance and reliable performance, this meter excels in water treatment, petrochemical, food and pharmaceutical, power supply and other industries, becoming a practical and versatile flow measurement tool.
Post time: Dec-05-2025