dual-channel ultrasonic flow meter 4-20mA

Short Description:

TF1100-DC Dual-channel Wall-mounted Transit Time Ultrasonic Flowmeter works on the transit-time method. The clamp-on ultrasonic transducers (sensors) are mounted on the external surface of the pipe for non-invasive and non-intrusive flow measurement of liquid and liquefied gasses in fully filled pipe. Two pairs of transducers are sufficient to cover the most common pipe diameter ranges. In addition, its optional thermal energy measurement capability makes it possible to carry out a complete analysis of thermal energy usage in any facility.

This flexible and easy to use flow meter is the ideal tool for the support of service and maintenance activities. It can also be used for the control or even for the temporary replacement of permanently installed meters.

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Features

Dual channel non-invasive transducers to ensure high accuracy 0.5% of the flow meter.

Easy to install, cost effective, and require no pipe cutting or processing interrupt.

Wide liquid temperature range: -35℃~200℃.

Data logger function.

Aluminum or Stainless steel SUS304 sensors for your optional.

Thermal energy measurement capability can be optional.

For commonly used pipe materials and diameters from 20mm to 6.0m.

Wide bi-directional flow range of 0.01 m/s to 15 m/s.

Applications

● Service and maintenance
● Replacement of defective devices
● Support of commissioning process and installation
● Performance and efficiency measurement
- Evaluation and assessments
- Capacity measurement of pumps
- Monitoring of regulating valves

● Water and waste water industry - hot water, cooling water, potable water, sea water etc.)
● Petrochemical industry
● Chemical industry -chlorine, alcohol, acids, .thermal oils.etc
● Refrigeration and air conditioning systems
● Food , beverage and pharmaceutical industry
● Power supply- nuclear power plants, thermal & hydropower plants), heat energy boiler feed water.etc
● Metallurgy and mining applications
● Mechanical engineering and plant engineering-pipeline leak detection, inspection, tracking and collection.

Specifications

Transmitter:

Measurement principle	Ultrasonic transit-time difference correlation principle
Flow velocity range	0.01 to 15 m/s, bi-directional
Resolution	0.1mm/s
Repeatability	0.15% of reading
Accuracy	±0.5% of reading at rates >0.3 m/s);±0.003 m/s of reading at rates<0.3 m/s
Response time	0.5s
Sensitivity	0.001m/s
Damping of displayed value	0-99s(selectable by user)
Liquid Types Supported	both clean and somewhat dirty liquids with turbidity <10000 ppm
Power Supply	AC: 85-265V DC: 24V/500mA
Enclosure type	Wall-mounted
Degree of protection	IP66 according to EN60529
Operating temperature	-10℃ to +60℃
Housing material	Fiberglass
Display	4.3’’ color LCD 5 lines display, 16 keys
Units	User Configured (English and Metric)
Rate	Rate and Velocity Display
Totalized	gallons, ft³, barrels, lbs, liters, m³,kg
Thermal energy	unit GJ，KWh can be optional
Communication	4~20mA(accuracy 0.1%),OCT, Relay, RS485 (Modbus),data logger
Security	Keypad lockout, system lockout
Size	244196114mm
Weight	2.4kg

Transducer:

Degree of protection	Standard IP65; IP67, IP68 can be optional
Suited Liquid Temperature	-35℃~200℃
Pipe diameter range	20-50mm for type B, 40-4000mm for type A
Transducer Size	Type A 46(h)31(w)28(d)mm
Transducer Size	Type B 40(h)24(w)22(d)mm
Material of transducer	Aluminum or Stainless steel SUS304
Cable Length	Std:10m
Temperature Sensor	Pt1000, 0 to 200℃, Clamp-on and Insertion type Accuracy: ±0.1%

Principle of measurement

The TF1100 ultrasonic flow meter is designed to measure the fluid velocity of liquid within a closed pipe. The transducers are a non-invasive, clamp-on type, which will provide benefits of non-fouling operation and easy installation.

The TF1100 transit time flow meter utilizes two transducers that function as both ultrasonic transmitters and receivers. The transducers are clamped on the outside of a closed pipe at a specific distance from each other. The transducers can be mounted in V-method where the sound transverses the pipe twice, or W-method where the sound transverses the pipe four times, or in Z-method where the transducers are mounted on opposite sides of the pipe and the sound crosses the pipe once. This selection of the mounting method depends on pipe and liquid characteristics. The flow meter operates by alternately transmitting and receiving a frequency modulated burst of sound energy between the two transducers and measuring the transit time that it takes for sound to travel between the two transducers. The difference between the transit-time is directly and exactly related to the velocity of the liquid in the pipe, as shown in below Figure.