Aft -2000W User Manual
  1. Manuals
  2. Brands
  3. Aft Manuals
  4. Measuring Instruments
  5. AFT-2000W
  6. User manual

Aft -2000W User Manual

Ultrasonic flow meter
Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
Ultrasonic Flow Meter User Manual
Type: AFT-2000W

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the AFT-2000W and is the answer not in the manual?

Questions and answers

Summary of Contents for Aft AFT-2000W

  • Page 1 Ultrasonic Flow Meter User Manual Type: AFT-2000W...

  • Page 2: Table Of Contents

    AFT-2000W User Manual Contents 1. Introduction............................ 4 1.1 Preface..........................4 1.2 Features..........................4 1.3 Flow measurement principle....................4 1.4 Optional transducer......................5 1.5 Typical application......................5 1.6 Product Identification......................5 1.7 Specifications........................5 2. Installation and Measurement......................7 2.1 Wiring diagram........................7 2.2 Keypad..........................7 2.3 Menu Windows........................8...
  • Page 3 AFT-2000W User Manual 4.9 How to use the damper..................... 27 4.10 How to use the zero-cutoff function................28 4.11 How to setup a zero point....................28 4.12 How to get a scale factor for calibration............... 28 4.13 How to use the system locker..................28 4.14 How to use 4-20mA current loop output...............

  • Page 4: Introduction

    ◆ 1.3 Flow measurement principle The AFT-2000W ultrasonic flow meter is designed to measure the fluid velocity of liquid within a closed conduit. The transducers are a non-contacting, clamp-on type, which will provide benefits of non-fouling operation and easy installation.

  • Page 5: Optional Transducer

    AFT-2000W User Manual Where θ is the include angle to the flow direction M is the travel times of the ultrasonic beam D is the pipe diameter Tup is the time for the beam from upstream transducer to the downstream one Tdown is the time for the beam from downstream transducer to the upstream one ΔT=Tup –Tdown...
  • Page 6 AFT-2000W User Manual Measurement 500ms Period LCD with backlight, display accumulated flow/heat, instantaneous Display flow/heat, velocity, time etc. Analogue output: 4-20mA or 0-20mA current output. Impedance 0∼ 1k. Accuracy 0.1%. OCT output: Frequency signal (1~9999HZ) Output Relay output: over 20 source signal (no signal, reverse flow etc.)

  • Page 7: Installation And Measurement

    AFT-2000W User Manual 2. Installation and Measurement 2.1 Wiring diagram 2.2 Keypad The keypad for the operation of the flow meter is as MENU shown by the right picture. Keys 0 - 9 and . are keys to enter numbers Key ▲/+ is the going UP key, when the user wants to go to the...

  • Page 8: Menu Windows

    AFT-2000W User Manual ENT is the ENTER key for any inputting or selections. MENU is the key for the direct menu window jump over. Whenever the user wants to proceed to a certain menu window, the user can press this key followed by 2-digit numbers.

  • Page 9: Steps To Configure The Parameters

    AFT-2000W User Manual further modification can be made. 2.4 Steps to Configure the Parameters The following parameters need to be configured for a proper measurement: (1) Pipe outer diameter (2) Pipe wall thickness (3) Pipe materials (for non-standard pipe materials*, the sound speed for the material must be...

  • Page 10: Transducers Mounting Allocation

    AFT-2000W User Manual (12) Press to check up time ratio, the ratio value should be in the range of 100±3% MENU (13) Press to check up the working status, “R” means work well MENU MENU (14) Press to check up the measuring data.

  • Page 11: Transducers Installation

    2.6 Transducers Installation The transducers used by the AFT-2000W series ultrasonic flow meter are made of piezoelectric crystals both for transmitting and receiving ultrasonic signals through the wall of liquid piping system. The measurement is realized by measuring the traveling time difference of the ultrasonic signals.

  • Page 12: Wiring Diagram Of Transducer

    AFT-2000W User Manual 2.6.1 Wiring diagram of transducer 2.6.2 Transducers Spacing The spacing value shown on menu window M25 refers to the distance of inner spacing between the two transducers. The actual transducers spacing should be as close as possible to the spacing value.

  • Page 13: Z-Method Installation

    AFT-2000W User Manual 2.6.4 Z-method Installation Z-method is commonly used when the pipe diameter is above 200mm. 2.6.5 W-method Installation W-method is usually used on pipes with a diameter from 15mm to 50mm.

  • Page 14: N-Method Installation

    AFT-2000W User Manual 2.6.6 N-method Installation Rarely used method. 2.7 Installation Checkup Through the checkup of the installation, one can: check the receiving signal strength, the signal quality Q value, the traveling time difference of the signals, the estimated liquid speed, the measured traveling time of the signals and the calculated traveling time ratio.

  • Page 15: Signal Quality

    AFT-2000W User Manual 2.7.2 Signal quality Signal quality is indicated as the Q value in the instrument. A higher Q value would mean a higher Signal and Noise Ratio (short for SNR), and accordingly a higher degree of accuracy would be achieved.

  • Page 16: Menu Window Details

    AFT-2000W User Manual M60-M78 windows for time-keeper initialization, version and ESN information viewing and alarms. M82 window for viewing date totalizer. M90~M94 are diagnostic windows for a more accurate measurement. M97~M99 are not windows but commands for the outputting of display copying and pipe parameter setups.
  • Page 17 AFT-2000W User Manual Note: you just need to enter either the outer diameter in M11 or the peripheral in M10 Window for entering pipe wall thickness You may skip the menu and enter inner diameter in M13 instead. Window for entering the inner diameter of the pipe...
  • Page 18 AFT-2000W User Manual Standard-HM (middle size transducer for Handheld flow meter) 10. Standard-M1 (middle size transducer #1) 11. Standard-S1 (small size transducer #1) 12. Standard-L1 (large size transducer #1) 13. PI-Type 14. FS410 (middle size transducer for FUJI flow meter) 15.
  • Page 19 AFT-2000W User Manual Flow rate can be in 0. Cubic meter short for 1. Liter 2. USA gallon (gal) 3. Imperial Gallon (igl) 4. Million USA gallon (mgl) 5. Cubic feet (cf) 6. USA liquid barrel (bal) 7. Oil barrel (ob) The flow unit in terms of time can be per day, per hour, per minute or per second.
  • Page 20 AFT-2000W User Manual Entry to linearity correcting data inputs. By using of this function, the non-linearity of flow meter will be corrected. Correcting data shall be obtained by careful calibration. Displays the input contents for the serial port. By checking the displays, you can know if the communication is ok.
  • Page 21 AFT-2000W User Manual The following parameters can be configured: Baud rate (300 to 19200 bps), parity, data bits (always is 8), stop bits (1). Select communication protocol. Factory default is ‘MODBUS ASCII. this is a mode for MODBUS-ASCII, Meter-BUS, Fuji Extended Protocol, Huizhong’s various protocols.
  • Page 22 AFT-2000W User Manual 2. Not Ready (No*R) 3. Reverse Flow 4. AO Over 100% 5. FO Over 120% 6. Alarm #1 7. Reverse Alarm #2 8. Batch Control 9. POS Int Pulse 10.NEG Int Pulse 11.NET Int Pulse 12.Energy POS Pulse 13.Energy NEG Pulse...
  • Page 23 AFT-2000W User Manual sources: 0. Key input (press ENT key to start the batch controller) 1. Serial port 2. AI3 rising edge (when AI3 receives 2mA or more current) 3. AI3 falling edge (when AI3 stop receiving 2mA or more current) 4.
  • Page 24 AFT-2000W User Manual from AI3,AI4 Select the Specific Heat Value. Factory default is ‘GB’. Under this setting, the flow meter will calculate the enthalpy of water based on the international standard. If the fluid is other than water, you should select option ‘1. Fixed Specific Heat’, and enter the specific heat value of the fluid.
  • Page 25 AFT-2000W User Manual This is not a window but a command to copy the current display window. By default, the produced data will be directed to the internal serial bus (thermal printer). You can also direct those data to the serial communication port.

  • Page 26: How To

    AFT-2000W User Manual Note: 1. Windows in are new to our older version of flow meter 2. Windows in blue are energy related windows 3. The term totalizer is also called accumulator 4. How To 4.1 How to judge if the instrument works properly Enter into M08, if ‘R’...

  • Page 27: How To Select A Required Flow Rate Unit

    AFT-2000W User Manual 4.4 How to select a required flow rate unit Use menu window M31 to select the flow unit first and then the timing unit. 4.5 How to use the totalizer multiplier Use window M33 to select a proper totalizer. Make sure that the totalizer pulse is appropriately speeded.

  • Page 28: How To Use The Zero-Cutoff Function

    AFT-2000W User Manual 4.10 How to use the zero-cutoff function The number displayed in window M41 is called the lower flow rate cut-off value. The flow meter will replace these flow rate values that are absolutely less than the low-cutoff value with ‘0’. This means the flow meter will avoid any invalid accumulation when the actual flow is below the zero-cutoff value.

  • Page 29: How To Use The Frequency Output

    The present current loop output is displayed in Window M59. It changes along with flow rate change. 4.15 How to use the Frequency Output There is a Frequency Output in all AFT-2000W series flow meters. This frequency output signal, which represents the flow rate, is intended to connect with other instruments.

  • Page 30: How To Use The Totalizer Pulse Output

    AFT-2000W User Manual instrumentation. The user should enter 0 in M68 and 3000 in M69, and enter 200 and 1000 in window M67. Please note that the user has to make the selection with OCT setups in window M78. 4.16 How to use the Totalizer Pulse Output The totalizer output will produce a pulse output with every unit flow of the totalizer.

  • Page 31: How To Use The Built-In Buzzer

    AFT-2000W User Manual (2) Enter flow rate upper limit 1000 in M74 for #1 alarm, (3) Select item '6. Alarm #1' in M77. Example C: assume we need the OCT output to activate when flow rate exceeds 100~500m /h and the relay output to activate when flow rate exceeds 600~1000m3/h.

  • Page 32: How To Use The Working Timer

    4.25 How to check the ESN and other minor details Every set of the AFT-2000W flow meter utilizes a unique ESN to identify the meter. The ESN is an 8- digit number that provides the information of version and manufacturing date.

  • Page 33: How To Adjust The Lcd Display

    AFT-2000W User Manual 4.28 How to adjust the LCD display You may use menu window 70 to setup the LCD display backlight and menu window 71to adjust contrast it. 4.29 How to use RS232/RS485? Use menu window 62 to set up RS232/RS485. All the devices connected with flow meter should have matched serial configuration.

  • Page 34: How To Solidify The Parameters

    AFT-2000W User Manual 4.33 How to solidify the parameters There are three kinds of parameters for the new generation TUF/TUC-2000: 1) Current parameters, the parameters are stored in the RAM. They will be lost when one cut the power or remove the reserve battery.

  • Page 35: How To Save / Restore Frequently-Used Pipe Parameters

    AFT-2000W User Manual 50.56 51.23 0.99 In order to revised the flow exceed the scope of the above table, without mutations of correction factor, we add two points on the basis of the above five points, (0 m /h, 1.0) and (100000 m /h, 1.0).

  • Page 36: Troubleshooting

    5.2 Error Code and Counter-Measures The AFT-2000W ultrasonic flow meter will show Error Code in the lower right corner with a single letter like I, R etc. on menu windows M00, M01, M02, M03, M90 and M08. When any abnormal Error Code shows, counter-measures should be taken.

  • Page 37: Other Problems And Solutions

    AFT-2000W User Manual Too much fouling Check cords The pipe liners are too thick. (5)Problem with transducers Check cords coupler Check the value entered M66, The actual frequency for the M67,M68 and M69, Frequ Output Over Frequency Output is out of the...

Table of Contents