Alia Ultrasonic Flow Meter

Portable flow meter

Clamp On Ultrasonic Flow meter

Hand Held Ultrasonic FLow Meters

Ultrasonic Flowmeter

AUF610series is a portable transit-time ultrasonic flowmeter with clamp-on transducers for non AUF610series AUF610series is a Alia portable transit-time ultrasonic flowmeter with clamp-on transducers for non-invasive liquid measurement.	AUF750 Series AUF750 series is a fixed mounted, transit-time ultrasonic Flowmeter, with clamp-on transducers for non-invasive liquid measurement. Our microprocessor based, user friendly, field ...
AUF760 Series ALIASONIC AUF760 series is a Alia fixed mounted, transit-time ultrasonic flowmeter, flange end transducers for non-invasive liquid measurement. Our microprocessor based, user friendly ...	AUF600 Series ALIASONIC AUF600 series is a Alia portable transit-time ultrasonic flowmeter with clamp-on transducers for non-invasive liquid measurement. Based on microprocessor and programmable f ...

Flow Meter

Introduction to Flow Meters

What are Flowmeters?

A flowmeter is an instrument used to measure linear, nonlinear, mass or volumetric flow rate of a liquid or a gas.

Selecting a Flow Meter The basis of good flowmeter selection is a clear understanding of the requirements of the particular application. Therefore, time should be invested in fully evaluating the nature of the process fluid and of the overall installation. Here are some key questions which need to answered before selecting a flowmeter:

What is the fluid being measured by the flowmeter or flowmeters (air,water,etc…)?

Do you require rate measurement and/or totalization from the flow meter?

If the liquid is not water, what viscosity is the liquid?

Is the fluid clean?

Do you require a local display on the flow meter or do you need an electronic signal output?

What is the minimum and maximum flowrate for the flow meter?

What is the minimum and maximum process pressure?

What is the minimum and maximum process temperature?

Is the fluid chemically compatible with the flowmeter wetted parts?

If this is a process application, what is the size of the pipe?

Flow Measurement Orientation

When choosing flowmeters, one should consider such intangible factors as familiarity of plant personnel, their experience with calibration and maintenance, spare parts availability, and mean time between failure history, etc., at the particular plant site. It is also recommended that the cost of the installation be computed only after taking these steps. One of the most common flow measurement mistakes is the reversal of this sequence: instead of selecting a sensor which will perform properly, an attempt is made to justify the use of a device because it is less expensive. Those "inexpensive" purchases can be the most costly installations.

The basis of good flow meter selection is a clear understanding of the requirements of the particular application. Therefore, time should be invested in fully evaluating the nature of the process fluid and of the overall installation.

The first step in flow sensor selection is to determine if the flowrate information should be continuous or totalized, and whether this information is needed locally or remotely. If remotely, should the transmission be analog, digital, or shared? And, if shared, what is the required (minimum) data-update frequency? Once these questions are answered, an evaluation of the properties and flow characteristics of the process fluid, and of the piping that will accommodate the flowmeter, should take place. In order to approach this task in a systematic manner, forms have been developed, requiring that the following types of data be filled in for each application: Click here to download the Flowmeter Evaluation Form

Fluid and flow characteristics: In this section of the table, the name of the fluid is given and its pressure, temperature, allowable pressure drop, density (or specific gravity), conductivity, viscosity (Newtonian or not?) and vapor pressure at maximum operating temperature are listed, together with an indication of how these properties might vary or interact. In addition, all safety or toxicity information should be provided, together with detailed data on the fluid's composition, presence of bubbles, solids (abrasive or soft, size of particles, fibers), tendency to coat, and light transmission qualities (opaque, translucent or transparent?).

Expected minimum and maximum pressure and temperature values should be given in addition to the normal operating values when selecting flowmeters. Whether flow can reverse, whether it does not always fill the pipe, whether slug flow can develop (air-solids-liquid), whether aeration or pulsation is likely, whether sudden temperature changes can occur, or whether special precautions are needed during cleaning and maintenance, these facts, too, should be stated.

Concerning the piping and the area where the flowmeters are to be located, consider:

For the piping, its direction (avoid downward flow in liquid applications), size, material, schedule, flange-pressure rating, accessibility, up or downstream turns, valves, regulators, and available straight-pipe run lengths.

The specifying engineer must know if vibration or magnetic fields are present or possible in the area, if electric or pneumatic power is available, if the area is classified for explosion hazards, or if there are other special requirements such as compliance with sanitary or clean-in-place (CIP) regulations.

The next step is to determine the required meter range by identifying minimum and maximum flows (mass or volumetric) that will be measured. After that, the required flow measurement accuracy is determined. Typically accuracy is specified in percentage of actual reading (AR), in percentage of calibrated span (CS), or in percentage of full scale (FS) units. The accuracy requirements should be separately stated at minimum, normal, and maximum flowrates. Unless you know these requirements, your flowmeter's performance may not be acceptable over its full range.

In applications where products are sold or purchased on the basis of a meter reading, absolute accuracy is critical. In other applications, repeatability may be more important than absolute accuracy. Therefore, it is advisable to establish separately the accuracy and repeatability requirements of each application and to state both in the specifications.

When a flowmeter's accuracy is stated in % CS or % FS units, its absolute error will rise as the measured flow rate drops. If meter error is stated in % AR, the error in absolute terms stays the same at high or low flows. Because full scale (FS) is always a larger quantity than the calibrated span (CS), a sensor with a % FS performance will always have a larger error than one with the same % CS specification. Therefore, in order to compare all bids fairly, it is advisable to convert all quoted error statements into the same % AR units.

In well-prepared flow meter specifications, all accuracy statements are converted into uniform % AR units and these % AR requirements are specified separately for minimum, normal, and maximum flows. All flowmeters specifications and bids should clearly state both the accuracy and the repeatability of the meter at minimum, normal, and maximum flows.

If acceptable metering performance can be obtained from two different flow meter categories and one has no moving parts, select the one without moving parts. Moving parts are a potential source of problems, not only for the obvious reasons of wear, lubrication, and sensitivity to coating, but also because moving parts require clearance spaces that sometimes introduce "slippage" into the flow being measured. Even with well maintained and calibrated meters, this unmeasured flow varies with changes in fluid viscosity and temperature. Changes in temperature also change the internal dimensions of the meter and require compensation.

Furthermore, if one can obtain the same performance from both a full flowmeter and a point sensor, it is generally advisable to use the flowmeter. Because point sensors do not look at the full flow, they read accurately only if they are inserted to a depth where the flow velocity is the average of the velocity profile across the pipe. Even if this point is carefully determined at the time of calibration, it is not likely to remain unaltered, since velocity profiles change with flowrate, viscosity, temperature, and other factors.

Before specifying a flow meter, it is also advisable to determine whether the flow information will be more useful if presented in mass or volumetric units. When measuring the flow of compressible materials, volumetric flow is not very meaningful unless density (and sometimes also viscosity) is constant. When the velocity (volumetric flow) of incompressible liquids is measured, the presence of suspended bubbles will cause error; therefore, air and gas must be removed before the fluid reaches the meter. In other velocity sensors, pipe liners can cause problems (ultrasonic), or the meter may stop functioning if the Reynolds number is too low (in vortex shedding meters, RD > 20,000 is required).

In view of these considerations, mass flowmeters, which are insensitive to density, pressure and viscosity variations and are not affected by changes in the Reynolds number, should be kept in mind. Also underutilized in the chemical industry are the various flumes that can measure flow in partially full pipes and can pass large floating or settleable solids.

ALIA FLOW METER

1.Model AMF

    A. AMF 900
Specification :

       AMF900 Series is a flange type Electromagnetic Flowmeter ideal for conductive liquids. It comes in sizes from 6 to 2000mm.
AMF900 is widely used for tap-water, waste water, food & beverage
Pulp & Paper and many other industrial fluid.
AMF900 Series electromanetic flowmeter could be used in compact or separate model with AMC Series converter of electromagnetic Flowmeter.

   B. AMF 300
 Specification :

     

AMF300 Series is a threaded type electromagnetic Flowmeter ideal for conductive liquids. It comes in sizes from 2.5 to 40 mm. The AMF300 is widely used for tap-water, waste water, food & beverage,Pulp & Paper and many other industrial fluid. AMF300 Series electromagnetic flowmeter could be used in compact or separate model with AMC Series converter of electromagnetic Flowmeter.    C. AMF 500         Specification    AMF500 Series is a wafer type electromagnetic Flowmeter ideal for conductive liquids. It comes in sizes from 25 to 200 mm. AMF500 is widely used for tap-water, waste water, food & beverage, Pulp & Paper and many other industrial fluid. AMF500 Series electromagnetic flowmeter could be used in compact or separate model with AMC Series converter of electromagnetic Flowmeter. C. AMF 601 Specification    AMF601 Series is a sanitary type electromagnetic Flowmeter ideal for conductive liquids. It comes in sizes from 25 to 100 mm. The AMF601 is widely used for drink water, Milk , food & beverage juice and many other industrial fluid. AMF601 Series electromagnetic flowmeter could be used in compact or separate model with AMC Series converter of electromagnetic Flowmeter.

2. MODEL AMC    A. AMC 4000 Specification

        AMC4000 series is a battery powered converter be used with AMF series sensor in both compact or separate version.










B. AMC  

  Specification :

    AMC3100 series Converter can be used with
AMF series flow tubes in both compact or separate versions.
      
 






C. AMC 2100

   Specification :

       AMC2100 series Converter can be used with
AMF series flow tubes in both compact or separate versions.











D. AMC 2100E

   Specification :
      AMC2100E series Converter With temperature/energy function can be used with AMF series flowmeter in both compact or separate versions.










 3. MODEL AUF

   A. AUF 610
     Specification:
          AUF610series is a portable transit-time ultrasonic flowmeter with clamp-on transducers for non-invasive liquid measurement.
Based on microprocessor,field programmable flow measurement technique allows no interruption to the process flow and has low installation costs. 


B. AUF 750

    Specification:
        AUF750 series is a fixed mounted, transit-time ultrasonic Flowmeter, with clamp-on transducers for non-invasive liquid measurement.
Our microprocessor based, user friendly, field programmable flow measurement technique allows no interruption of the process flow and has low installation costs.


C. AUF 760
  Specification :
     ALIASONIC AUF760 series is a fixed mounted, transit-time ultrasonic flowmeter, flange end transducers for non-invasive liquid measurement.
Our microprocessor based, user friendly, field programmable flow measurement technique allows no interruption of the process flow and has low installatio


 D. AUF 600
  Specification :
     ALIASONIC AUF600 series is a portable transit-time ultrasonic flowmeter with clamp-on transducers for non-invasive liquid measurement.
Based on microprocessor and programmable flow measurement technique which allows no interruption of the process flow and has low installation costs. 


4. MODEL AVF 
  A.  AVF 250
  Specification :
 ALIAVA AVF250 Series is a flowmeter commonly used in Auto-industry process control. It's with small volume, wide range and easily operation.
It could also measure liquid, gas and steam flowrate, especially fit for small flowrate application. 


B. AVF 7000

Specification :
    ALIAVTX AVF7000 is a Vortex Flowmeter based on Von Karman theory of vortices generated by a bluff body in the pipe. The number of vortices are linearly proportional to the volumetric flow in the pipe.
The AVF7000 is versatile flowmeter widely used for Gases, Steam & Liquid applications. There are no moving parts and comes with either Flange or wafer connection. Standard configuration have local indication for flowrate and total flow as well as a 4-20mA output functions. The microprocessor design can filter out erroneous signals as well as interfence caused by pipe vibration. 

5. MODEL AHV 400
  Specification :
   ALIAVALVE AHV400 series manifolds feature a horizontal body design, Manifolds are constructed out of bar-stock and forged material in 316 stainless Steel as Standard.
Standard models are available in 2-,3-way configurations together with a full range of connection types; custom designs are available on demand.
Each manifold undergoes hydraulic pressure, pneumatic pressure,vacuum, vibration and thermal stability testing to ensure product integrity.

6. MODEL APT 8000

Specification :
   
APT8000 series is a digital pressure transmitter designed for industrial pressure measurement applications.
The APT8000 offer Configurations for gauge pressure, absolute pressure and vacuum including integrated solutions for industrial applications. 

7. MODEL ADP 9000
 Specification :
   ADP9000 series is a digital differential pressure transmitter designed for industrial pressure measurement applications.
The ADP9000 offer Configurations for Differential, gas, absolute pressure and vacuum liquid-Level measurements including integrated solutions for pressure, level and flow.

8. MODELALIADP D Series
Specification :
 ALIADP D series is a diaphragm seal product combining APT8000 / ADP9000 / ADP9000L transmitter, which designed for the high-viscosity/ granular/ high-temp./ high-corrosivity situation.D series diaphragm seal assembles Alia pressure/DP transmitter to form direct-mount / capillary-connections style.

9. MODEL ADP9000 L
Specification :

 ADP9000L series is a digital differential pressure transmitter designed for industrial level measurement applications.The ADP9000L offer Configurations for Differential, gas, absolute Vacuum liquid-Level measurements including integrated solutions for pressure, level and flow.

10. MODEL ARC 

   A. ARC 800
  Specification :
 ARC800 Series Paperless Recorder uses the most advanced technology and can apply to various industry applications.
ARC800 is the product which with multi-channels, complete functions, eas y operation, high accuracy,low power but high performance.And the series overcomes the old-fashioned paperless recorder, which has less channels, multiple installation and space-consuming problem. 


   B. MODEL ARC 700
    Specification :

 ALIAPANEL ARC700 Series Paperless Recorder used the most Advanced technology, to be aimed to various industry application,and designed a small sized and lower power consumed, high accuracy, common use, it can also overcome the older big sized recorder, not easy installation...etc defects. 

C MODEL ARC 900

Specification :
  ARC900 Series Paperless Recorder used the most Advanced technology, to be aimed to various industry application.
ARC900 is the product which with multi-channels, complete functions, easy operation, high accuracy,low power but high performance.And the series overcomes the old-fashioned paperless recorder, which has less channels, multiple installation and space-consuming problem. 

11. MODEL ATF 80
 Specification :
   

ATF80 Smart Target flowmeters apply new capacitance sensors to the target flowmeters, process the detected sensor signal, through digital technique and micro-electric technology, to 4-20mA output which is proportional to flow. Smart Target Flowmeters are suitable for low-velocity & high-temp. gas, steam flowrate. If there is an error of measuring range, you can only change target for satisfying correct application and it is no need to change the whole flowmeter.