1. What Is the TF1100-EC Wall-Mounted Ultrasonic Flowmeter?
The TF1100-EC Wall-Mounted Transit-Time Ultrasonic Flowmeter is an advanced solution for precise, nonintrusive liquid flow measurement. Employing the transit-time principle, the instrument utilizes clamp-on ultrasonic transducers mounted externally to the pipe surface, eliminating the need for pipe cutting or process interruption. As a non-invasive flowmeter, it is particularly suited to facilities requiring comprehensive energy analysis; an optional thermal energy measurement module, paired with PT1000 clamp-on temperature sensors (±0.1% accuracy), enables complete monitoring of thermal energy consumption and efficiency.
The transmitter supports a rich output suite including 4-20mA, OCT, Relay, RS232, RS485 (Modbus), built-in data logger, and optional NB-IoT connectivity — aligning directly with the industry's shift toward IoT-enabled remote monitoring. The wall-mounted enclosure (244 × 196 × 114 mm) houses a color LCD display with userconfigurable units (English and Metric), selectable damping (0–99 s), and bidirectional flow measurement from 0.01 m/s to 12 m/s. Power supply options include 85–265 VAC or 24 VDC/500 mA, accommodating both standard industrial panel wiring and remote solar-powered installations. With repeatability of 0.25% and a measurement resolution that captures even low-flow conditions, the TF1100-EC delivers the data granularity required for leak detection, energy auditing, and regulatory compliance reporting.
TF1100-EC with Color LCD Display
Clamp-On Ultrasonic Transducers (IP68, -35°C ~ 200°C)
2. Why Choose This Ultrasonic Flowmeter?
(1) Non-invasive transducers are easy to install, cost effective, and require no pipe cutting or processing interrupt.
(2) Wide liquid temperature range: -35℃~200℃.
(3) Non-invasive transducer not contact the liquid, fouling and maintenance are eliminated.
(4) Data logger function.
(5) Thermal energymeasurement capability can be optional.
(6) For commonly used pipe materials and diameters from 20mm to over 6.0m.
(7) Wide bi-directional flow range of 0.01 m/s to 12 m/s.
3. How Does the Ultrasonic Flowmeter Work?
The Transit Time Difference Correlation Principle makes use of the fact that the time-of-flight of an ultrasonic signal is affected by the flow velocity of the carrier medium. Like a swimmer working his way across a flowing river, an ultrasonic signal travels slower upstream than downstream.
Our TF1100 ultrasonic flow meters work according to this transit-lime principle:
Where:
Vf:Flow velocity
K: Constant
dt: Difference in time of flight
TL: Ave rage Transit Time
When the flow meter works, the two transducers transmits and receives ultrasonic signals amplified by multi beam which travels firstly downstream and then upstream. Because ultra sound travels faster downstream than upstream, there will be a difference of time of flight (dt). When the flow is still, the time difference (dt) is zero. Therefore, as long as we know the time of flight both downstream and upstream, we can work out the time difference, and then the flow velocity (Vf) via the following formula.
Transit-Time Measurement Principle: Upstream and Downstream Sound Paths
4. Where Can the TF1100-EC Ultrasonic Flowmeter Be Applied?
Thanks to its unique working principle, the Wall-mounted Transit-time Ultrasonic FlowMeter TF1100-EC series excels in many applications where traditional flow meters struggle, including:
(1) Water and waste water industry - hot water, cooling water, potable water, sea water, etc
(2) Petrochemical industry
(3) Chemical industry -chlorine, alcohol, acids, thermal oils, etc
(4) Refrigeration and air conditioning systems
(5) Food, beverage and pharmaceutical industry
(6) Power supply- nuclear power plants, thermal & hydro-power plants, heat energy boiler feed water, et
Clamp-On Transducer Mounted on an Industrial Process Pipe
Field Installation: TF1100-EC in an Outdoor Monitoring Cabinet
Underground Pipe Installation: TF1100-EC Clamp-On Transducers
Three Lanny Wall-Mounted Transmitter
5. Why Is the TF1100-EC the Right Ultrasonic Flowmeter for Your Operation?
In an era defined by tightening water regulations, aging infrastructure, and the imperative for digital transformation, the TF1100-EC Wall-Mounted Transit-Time Ultrasonic Flowmeter delivers accurate, reliable, and non-invasive flow measurement that aligns with the industry's most pressing demands. Requiring no pipe cutting, no process interruption, and minimal maintenance, it offers hassle-free installation, convenient inspection, and robust performance across water, wastewater, petrochemical, chemical, HVAC, food, and power applications. Backed by Lanry's full ecosystem of transit-time and Doppler flowmeters, the TF1100-EC is the ideal measurement instrument for production monitoring, water balance debugging, heating network balancing, energy-saving monitoring, and regulatory compliance — today and as the market evolves.
6. Why Choose an Ultrasonic Flowmeter over Traditional Flowmeters?
Compared with mechanical meters, ultrasonic flowmeters contain no rotating impellers or bearings. As a result, their measurement accuracy does not drift over time owing to wear, and they require only minimal maintenance. Compared with vortex meters, they provide stable and reliable readings at low flow rates and across large pipe diameters, while imposing no pressure loss and consuming less energy. Furthermore, the transducers are mounted directly onto the exterior of the pipe, which eliminates the need for pipe cutting or process interruption. This makes the solution particularly well suited to aging and existing pipelines, substantially reducing installation and maintenance expenditure. When installation, maintenance, and measurement accuracy are considered collectively, ultrasonic flowmeters offer a lower total cost of ownership and represent the ideal combination of reliability and economy.
Meet Wall-mounted Transit-Time Ultrasonic Flowmeter TF1100-EC on:
Youtube: https://youtu.be/ATogXlkEMsk
Post time: Aug-28-2026