The TFX-500w transit time ultrasonic flow meter measures volumetric flow of clean water in pipes 10 in. or smaller. By clamping on the outside of the pipe, the ultrasonic meter installs without cutting or tapping the pipe.

APPLICATION

The TFX-500w meter is well suited for building automation, water distribution and wastewater collection in new and retrofit applications. In addition to having lower installation costs than an inline flow meter, the TFX-500w meter can be installed while the system continues to operate without interruption.The TFX-500w meter is suitable for:
• Potable water• Reclaimed water• Chiller water• Boiler feed water• Make-up water• Condenser water• Condensate

OPERATION

Transit time flow meters use two transducers that function as both ultrasonic transmitters and receivers. The flow meters operate by alternately transmitting and receiving a frequency-modulated burst of sound energy between the two transducers. The burst is first transmitted in the direction of fluid flow and then against fluid flow. Since sound energy in a moving liquid is carried faster when it travels in the direction of fluid flow (downstream) than it does when it travels against fluid flow (upstream), a differential in the times of flight will occur. The sound’s time-of-flight is accurately measured in both directions and the difference in time-of-flight calculated.

Handled Ultrasonic 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 distance from each other. The transducers can be mounted in V method in which case the ultrasound transverses the pipe twice, or W method in which case the ultrasound transverses the pipe four times, or in Z method in which case the transducer are mounted on opposite sides of the pipe and the ultrasound transverses the pipe only once. The selection of mounting method depends on pipe and liquid characteristics. When flow meter works, two transducers transmit and receive the ultrasonic signal which travels firstly downstream and then travels upstream. Because ultra sound travels faster downstream than upstream, there will be a difference of time of flight (delta t). When the flow is still, the time difference (delta t) is zero. Therefore, as long as we know the time of flight both downstream and upstream, we can work out the time difference and the flow velocity (V) and flow v (Q) the follow-ing formula.

Application:

• Raw Water, cooling water, DM water, hot water, chemicals, HVAC energy measurement system, beverages, food, pharmaceutical, power plants etc

Advantages:

• No moving parts
• Sensor clamp outside the pipe, no need to cut the lines

Disadvantages:

• Oil or corroded pipes may impede acoustic signal
• Too much aeration or turbulence can destroy signal

LFIA developed and produced Digital Water Flow Meter specially for Liquid dispensing industries, water dispensing industries use plastic turbines flow meter its k factor change with flow rate so for solution we developer helical rotor plastic flow meter with same pulse k factor for full range also provide very good accuracy and repeatability in full range of measurement, Helical flow meters are positive displacement meters with very fa-vourable low pressure drop behaviour, therefore perfectly suited for the flow measurement of very high viscosity fluids. Due to which measuring range, high accuracy and resolution he-lical flow meters are an excellent choice for adhesive dispense systems, as well as batching systems for various fluids.

Features:

• High Accuracy
• Pressure up to 20 bar
• Compared with other positive displacement meters
• High resolution
• Resistant to corrosion by advanced materials and bearings

Digital Diesel Flow Meter are used for flow measurement of low, medium viscosity fluids such as diesel, fuel, lubricant oil and other special fluids compatible with the constructions materi-al. Electronic card with microprocessor enables accurate LCD dis-play and working calibration of the flow meter.
Oval gear flow meters are a type of positive displacement meter. As liquid through the meter, pair of oval shaped gears is forced to rotate by the flow of the liquid. These gears mesh together & force a finite amount of liquid through the meter. A sensor or mechanical drive detects the rotation of the gears to determine the displaced volume of liquid. The faster the flow rate, the faster the gear turns.
The Oval fear flow meter comprises oval - shaped, geared rotors which rotate within a housing of specified geometry. Fluid differential pressure causes the inter-meshing gears to rotate, trapping a `pocket' of fluid between the gear and the outer housing and subsequently emp-tying the fluid pocket into the downstream flow. Capillary action of the metered fluid forms a liquid seal.
Each pocket holds a precise and known volume of fluid so counting the pocket frequency gives a measurement of the volumetric flow rate. This is typically achieved by embed-ding magnets in the rotors, which then actu-ate a reed switch or provide a pulse output as they rotate and thus flow is measured electronically.

Feaures:

• Easy maintenance
• Low pressure drop

Application:

• Diesel
• Oil
• Fuel

The TFX-500w transit time ultrasonic flow meter measures volumetric flow of clean water in pipes 10 in. or smaller. By clamping on the outside of the pipe, the ultrasonic meter installs without cutting or tapping the pipe.

APPLICATION

The TFX-500w meter is well suited for building automation, water distribution and wastewater collection in new and retrofit applications. In addition to having lower installation costs than an inline flow meter, the TFX-500w meter can be installed while the system continues to operate without interruption.The TFX-500w meter is suitable for:
• Potable water• Reclaimed water• Chiller water• Boiler feed water• Make-up water• Condenser water• Condensate

OPERATION

Transit time flow meters use two transducers that function as both ultrasonic transmitters and receivers. The flow meters operate by alternately transmitting and receiving a frequency-modulated burst of sound energy between the two transducers. The burst is first transmitted in the direction of fluid flow and then against fluid flow. Since sound energy in a moving liquid is carried faster when it travels in the direction of fluid flow (downstream) than it does when it travels against fluid flow (upstream), a differential in the times of flight will occur. The sound’s time-of-flight is accurately measured in both directions and the difference in time-of-flight calculated.

Handled Ultrasonic 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 distance from each other. The transducers can be mounted in V method in which case the ultrasound transverses the pipe twice, or W method in which case the ultrasound transverses the pipe four times, or in Z method in which case the transducer are mounted on opposite sides of the pipe and the ultrasound transverses the pipe only once. The selection of mounting method depends on pipe and liquid characteristics. When flow meter works, two transducers transmit and receive the ultrasonic signal which travels firstly downstream and then travels upstream. Because ultra sound travels faster downstream than upstream, there will be a difference of time of flight (delta t). When the flow is still, the time difference (delta t) is zero. Therefore, as long as we know the time of flight both downstream and upstream, we can work out the time difference and the flow velocity (V) and flow v (Q) the follow-ing formula.

Application:

• Raw Water, cooling water, DM water, hot water, chemicals, HVAC energy measurement system, beverages, food, pharmaceutical, power plants etc

Advantages:

• No moving parts
• Sensor clamp outside the pipe, no need to cut the lines

Disadvantages:

• Oil or corroded pipes may impede acoustic signal
• Too much aeration or turbulence can destroy signal

LFIA developed and produced Digital Water Flow Meter specially for Liquid dispensing industries, water dispensing industries use plastic turbines flow meter its k factor change with flow rate so for solution we developer helical rotor plastic flow meter with same pulse k factor for full range also provide very good accuracy and repeatability in full range of measurement, Helical flow meters are positive displacement meters with very fa-vourable low pressure drop behaviour, therefore perfectly suited for the flow measurement of very high viscosity fluids. Due to which measuring range, high accuracy and resolution he-lical flow meters are an excellent choice for adhesive dispense systems, as well as batching systems for various fluids.

Features:

• High Accuracy
• Pressure up to 20 bar
• Compared with other positive displacement meters
• High resolution
• Resistant to corrosion by advanced materials and bearings

Digital Diesel Flow Meter are used for flow measurement of low, medium viscosity fluids such as diesel, fuel, lubricant oil and other special fluids compatible with the constructions materi-al. Electronic card with microprocessor enables accurate LCD dis-play and working calibration of the flow meter.
Oval gear flow meters are a type of positive displacement meter. As liquid through the meter, pair of oval shaped gears is forced to rotate by the flow of the liquid. These gears mesh together & force a finite amount of liquid through the meter. A sensor or mechanical drive detects the rotation of the gears to determine the displaced volume of liquid. The faster the flow rate, the faster the gear turns.
The Oval fear flow meter comprises oval - shaped, geared rotors which rotate within a housing of specified geometry. Fluid differential pressure causes the inter-meshing gears to rotate, trapping a `pocket' of fluid between the gear and the outer housing and subsequently emp-tying the fluid pocket into the downstream flow. Capillary action of the metered fluid forms a liquid seal.
Each pocket holds a precise and known volume of fluid so counting the pocket frequency gives a measurement of the volumetric flow rate. This is typically achieved by embed-ding magnets in the rotors, which then actu-ate a reed switch or provide a pulse output as they rotate and thus flow is measured electronically.

Feaures:

• Easy maintenance
• Low pressure drop

Application:

• Diesel
• Oil
• Fuel