Ultrasonic Flowmeter

GENERMAL INFORMATION

Clamp-on ultrasonic flowmeters are non-invasive, “no-contact” devices that measure liquid flow by attaching transducers directly to the exterior of an existing pipe. It primarily operates on the transit-time difference principle. Two ultrasonic transducers are mounted on the pipe, sending sound pulses back and forth between each other. The system measures the time difference between the signal traveling with the flow (downstream) and against the flow (upstream); this difference is directly proportional to the fluid’s velocity, allowing for precise volumetric flow calculation. Because they require no pipe cutting, welding, or process shutdown, they are an ideal choice for system retrofitting, temporary flow audits, and measuring hazardous or corrosive liquids. They are widely applied across HVAC systems, water distribution, oil & gas operations, and chemical processing, where maintaining pipe integrity is critical.

BRIEF INTRODUCTION

This product is a clamp-on type ultrasonic flow meter that uses transfer time technology. Clamp-on type ultrasonic flow meter is easy to install and no need to cut off the pipe which saves you lots of trouble and cost. At the same time, this ultrasonic flow meter has our unique calculation software to ensure high accuracy and low-velocity response.
This ultrasonic flow meter is widely applied in the oil industry, water treatment, pure water, chemical, etc. The flow meter could add the RTD model and the temperature sensor become an energy meter to monitor energy use and help to save energy.

FEATURES

Versatility: It can quickly verify the flow readings of other meters and log system values over an extended period.
Portability: It is lightweight and easy to move, allowing for installation on different pipes.
Non-Invasive: The clamp-on transducers mean no tapping or cutting of the pipe is required, just clamp it outside the pipe.
Ease of Installation: It can be easily set up without complex procedures.
Suitable for Various Applications: It is excellent for measuring flows throughout plumbing infrastructure to verify the performance of sensors, pumps, and valves.
Data Logging Capability: It has the ability to log flow data, facilitating long-term monitoring and analysis.

MAIN SPECIFICATIONS (WALL-MOUNTED TYPE)

Flow range	±0.09ft/s ~ ±16ft/s (±0.03m/s ~ ±5m/s)
Accuracy	±1% of reading (for ±1.5ft/s ~ ±40ft/s)
Repeatability	0.2% of measured value
Linearity	±1%
Pipe size	1″ to 48″ (25mm to 1200mm). Pipe size under 1″ is available as an option
Outputs	Analog output: 4~20mA, max load 750Ω Pulse output: 0~10KHz
Communication	RS232 / RS485 Modbus
Power supply	10~36VDC/1A
Display	240*128 backlit LCD
Operating Temperature	Transmitter: -14°F ~ 140°F (-20°C ~ 60°C) Transducer: -40°F ~ 176°F (-40°C ~ 80°C, standard)
Operating Humidity	Up to 99% RH, non-condensing
Transmitter Housing	PC/ABS material, IP65 protection rating
Transducer	IP68 protection rating, encapsulated design Double-shielded transducer cable Standard/maximum cable length: 30ft/900ft (9m/274m)

MAIN SPECIFICATIONS (HAND-HELD TYPE)

Flow Range	±0.03ft/s ~ ±40ft/s (±0.01m/s ~ ±12m/s)
Accuracy	±1% of measured value
Pipe Size	Clamp-on: 1/2″ ~ 48″ (15mm ~ 1200mm)
Measurable Fluid	Single medium liquid
Compatible Pipe Material	Carbon steel, stainless steel, PVC and other compact material pipes
Output Signals	Analog output: 4~20mA, max load 750Ω Modbus: RS485
SD Card Storage	32G
Data Logging Interval	1 ~ 99999 seconds
Input Method	Digital keyboard
Display	240*128 backlit LCD
Power Supply	Rechargeable 3000mAh lithium battery Continuous operation of main battery: 16 hours
Operating Temperature	Transmitter: -20℃ ~ 60℃ Transducer: -40℃ ~ 80℃ (standard); -40℃ ~ 130℃ (optional)
Operating Humidity	Up to 99% RH, non-condensing
Transmitter Housing	NEMA13, IP54 protection rating
Transducer	IP68 protection rating, encapsulated design
Transducer Cable	Standard cable length: 5m (16ft) for 1MHz; 3m (9ft) for 2MHz

MAIN SPECIFICATIONS (MINI TYPE)

Product Type	Clamp On Type Ultrasonic Flow Meter
Compatible Pipe Range	OD9.53 – OD110 (DN6 – DN100)
Measurable Medium	Water, Chemical solvents etc. (solid inclusions content < 4%)
Maximum Medium Viscosity	<300CST (mm²/s)
Flow Range	0.1 m/s ~ 5.0 m/s
Accuracy	±2.0% (at 0.3m/s ~ 5.0m/s)
Linearity	±2.0% (at 0.3m/s ~ 5.0m/s)
Repeatability	0.80%
Response Time	500ms
Display Screen	1.3″ 128*64 OLED display, 180° rotatable for easy reading
Display Digits	7-digit display
Language	English
Display Units	Metric and English units available: m³/h, LPM, GPM, LPH Default unit: m³/h
Displayable Data	Flow rate, Flow velocity, net totalizer, single totalizer, day/month/year totalizer
Data Storage Capacity	10 years, 64 months, 64 days of data storage
Keypad	4 touch keys
Calendar Battery	CR1220
Power Supply	24VDC@3W
Analog Output	4-20mA, maximum load 600Ω
Communication Interface	RS485, supports Modbus RTU protocol
Alarm Output	OCT output, upper and lower limit alarm function (optional)
Relay Output	30VDC@1A, switching frequency < 2Hz (optional)
Standard Cable Length	2m (extendable up to 20m)
Protection Grade	IP54/IP65
Medium Temperature Range	-10℃ ~ 50℃ (compact type)
Ambient Temperature Range	-10℃ ~ 50℃
Ambient Humidity Range	0-95% relative humidity, non-condensing
Housing Material	Aluminum alloy
Installation Method	Compact unit design, upper and lower brackets and measuring unit tightened by screws