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Sensing & Inspection Technologies

AquaTrans™ AT8688

Panametrics Liquid Flow Ultrasonic Transmitter

Abridged Manual

914-218D
September 2004

The

AquaTrans AT868

is a GE Panametrics product. GE Panametrics has joined other GE high-technology

businesses under a new name—GE Sensing & Inspection Technologies.

Содержание AquaTrans AT868

Страница 1: ...GE Sensing Inspection Technologies AquaTrans AT868 Panametrics Liquid Flow Ultrasonic Transmitter Abridged Manual...

Страница 2: ...8 Panametrics Liquid Flow Ultrasonic Transmitter Abridged Manual 914 218D September 2004 The AquaTrans AT868 is a GE Panametrics product GE Panametrics has joined other GE high technology businesses u...

Страница 3: ...s that the equipment was defective the warranty period is one year for general electronic failures of the instrument one year for mechanical failures of the sensor If GE Infrastructure Sensing Inc det...

Страница 4: ...c instructs you to send your instrument to a service center it must be shipped prepaid to the authorized repair station indicated in the shipping instructions 3 Upon receipt GE Infrastructure Sensing...

Страница 5: ...14 Programming the AT868 1 14 Chapter 2 Programming Site Data Introduction 2 1 Activating a Channel CHx ACTIV Menu 2 1 Accessing the ACTIV Submenu 2 2 Entering System Data CHx SYSTM Menu 2 2 Accessing...

Страница 6: ...ommunications Port GLOBL COMM 2 18 Taking Measurements 2 18 Chapter 3 Displaying Data Introduction 3 1 Adjusting LCD Contrast and Brightness 3 1 Setting Up the Display 3 2 Accessing the Display Submen...

Страница 7: ...Chapter 1...

Страница 8: ...Installation Introduction 1 1 Site Considerations 1 1 CE Mark Compliance 1 4 Making Electrical Connections 1 6 Programming the AT868 1 14...

Страница 9: ...cause the relative location of the flowcell and the electronics enclosure is important use the guidelines in this section to plan the AT868 installation Electronics Enclosure Location The standard AT8...

Страница 10: ...curacy of the AT868 depends primarily on the location and alignment of the transducers In addition to accessibility when planning for transducer location follow these guidelines Locate the transducers...

Страница 11: ...weather and corrosive atmospheres Note If you are using your own cables to connect the transducers to the electronics console they must have electrical characteristics identical to the cables supplied...

Страница 12: ...equivalent Note If the instructions in this section are followed the unit will comply with the EMC Directive 89 336 EEC Table 1 1 Wiring Modifications Connection Cable Type Termination Modification Tr...

Страница 13: ...an external power disconnect device such as a switch or circuit breaker The disconnect device must be marked as such clearly visible directly accessible and located within 1 8 m 6 ft of the unit Note...

Страница 14: ...completing the following steps 1 Disconnect any previously wired power line from the unit 2 Remove the screws on the front cover 3 Loosen the two screws and remove the plastic shroud that protects th...

Страница 15: ...connection of the line power leads or connecting the meter to the incorrect line voltage may damage the unit It may also result in hazardous voltages at the flowcell and associated piping as well as...

Страница 16: ...le lengths must be within 4 in 10 cm of each other If the transducer frequency exceeds 2 MHz the cable lengths must be within 0 5 in 1 25 cm of each other 1 Locate the CH1 transducer cables and connec...

Страница 17: ...be configured independently Typically Output A is used for Channel 1 and Output C is used for Channel 2 However either analog output can be configured for use with either channel Connections to the an...

Страница 18: ...totalizer or frequency output circuit Figure 1 2 Totalizer Frequency Output Wiring WARNING NEVER CONNECT EXTERNAL POWER TO THE PULSE FREQUENCY OUTPUT TERMINALS To wire the totalizer frequency outputs...

Страница 19: ...rnal device If desired an appropriate cable may be purchased from GE Note Signal names that imply direction e g transmit and receive are named from the point of view of the DTE device the GE meter is...

Страница 20: ...ce the front cover on the enclosure and tighten the screws Note Consult the User s Manual for the external device to configure it for use with the AT868 Wiring an RS485 Interface Use the optional RS48...

Страница 21: ...on the enclosure and tighten the screws Figure 1 3 Typical RS485 Connections Using a Factory Serial Interface Use the following steps to link the AT868 to the control system using a factory installed...

Страница 22: ...s to connect an external reset switch 1 Refer to Figure 1 5 on page 1 16 to properly connect the external reset switch to the AT868 2 Configure the the external reset switch for use as described in Ch...

Страница 23: ...2004 Installation 1 15 Note 1 All dimensions are in inches millimeters 4 11 104 4 5 88 149 3 2 86 72 6 9 00 228 6 10 00 254 0 41 10 40 4 Holes Figure 1 4 Outline and Installation Wall Mount Ref 712 11...

Страница 24: ...d NEUT GND Line Power AC Power Input Description LINE Pin No Green Yellow White TB3 RS232 RS485 Serial Port Color 5 DTR 3 COM 4 CTS Pin No 2 RX Black Red 1 TX Description Data Terminal Ready Clear to...

Страница 25: ...Chapter 2...

Страница 26: ...enu 2 2 Entering Transducer and Pipe Parameters CHx PIPE Menu 2 4 Entering the Zero Cutoff Value CHx I O Menu 2 11 Activating Mass Flow 2 11 Entering Global System Data GLOBL SYSTM Menu 2 12 Setting U...

Страница 27: ...system data enter the pipe parameters As a programming aid a complete set of menu maps are included in Appendix A Menu Maps The specific figure numbers are referenced throughout this chapter Note Onl...

Страница 28: ...nu The CHx SYSTM submenu see Figure A 1 on page A 1 is used to enter system parameters for the individual channels In situations where the channels operate independently the AT868 uses the system para...

Страница 29: ...If MASS FLOW is OFF or only one channel is active the meter returns to the Channel PROGRAM menu Go to Entering Transducer and Pipe Parameters on the next page Selecting Mass Flow Units 1 Press W and...

Страница 30: ...Press ENTER at CH1 or CH2 4 Press X until PIPE appears and press ENTER 5 Do one of the following For standard transducers use the arrow keys to enter the transducer number Press W and X to move the c...

Страница 31: ...y using the arrow keys Press W and X to move the cursor to desired location and press S and T to increase or decrease the number and press ENTER Special Clamp On Transducers The following two prompts...

Страница 32: ...l Choices Material Types STEEL Carbon Steel Stainless Steel IRON Ductile Cast Cu Copper no additional selection required Al Aluminum no additional selection required BRASS no additional selection requ...

Страница 33: ...rease the number Then press ENTER If the pipe wall thickness cannot be measured directly look up the value in a table of standard pipe size data 4 Do one of the following wetted transducers proceed to...

Страница 34: ...o the desired location and press S and T to increase or decrease the number Then press ENTER Setting Up a Tracking Window The Tracking Window feature enables you to make accurate measurements when the...

Страница 35: ...ynolds Correction Factor or select Off to deactivate the Reynolds Correction Factor Then press ENTER Note usually Reynolds Correction should be set to Activ 2 Do one of the following If you selected O...

Страница 36: ...Enter the Calibration Factor in a similar manner and press ENTER Note If you select OTHER as the fluid type you must enter the Kinematic Viscosity The AT868 will only approximate the Kinematic Viscos...

Страница 37: ...the cursor to the desired location and press S and T to increase or decrease the number Then press ENTER Activating Mass Flow Use this option to calculate mass flow from a static fluid density Comple...

Страница 38: ...tion and press S and T to select the desired character Then press ENTER Selecting the System Units 1 Press X to select the system units and press ENTER 2 Do one of the following 1 Channel Meters go to...

Страница 39: ...ly one channel is active the meter returns to the Global PROGRAM menu Go to Settings Up the Outputs on the next page Selecting Mass Flow Units 1 Press W and X to select the desired mass flow units for...

Страница 40: ...and press ENTER Setting Up the Analog Output Scale 1 Press X to select the desired output scale and press ENTER 2 Do one of the following If you selected OFF the meter returns to the Global I O menu G...

Страница 41: ...number Then press ENTER Accessing the Totalizer Frequency Outputs A totalizer output issues one pulse per selected volume of flow and the meter produces a pulse each time the programmed amount of flow...

Страница 42: ...press S and T to increase or decrease the number Then press ENTER 6 At FULL enter a value for the high end of the output range 2 000 000 to 2 000 000 by using the arrow keys Press W and X to move the...

Страница 43: ...l and press ENTER 4 Press X to select the desired measurement parameter and press ENTER 5 Enter a value for the minimum pulse on time between 50 sec and 500 000 sec for the frequency of the totalizer...

Страница 44: ...rs and press ENTER 4 Press X until COMM appears and press ENTER 5 Enter a meter address between 1 and 254 by using the arrow keys The default number is 1 Press W and X to move the cursor to the desire...

Страница 45: ...Chapter 3...

Страница 46: ...Displaying Data Introduction 3 1 Adjusting LCD Contrast and Brightness 3 1 Setting Up the Display 3 2 Resetting the Totalizers 3 3...

Страница 47: ...plete the following steps 1 Loosen the screws and remove the front cover 2 With power still applied to the meter carefully use a small screwdriver to adjust the BKLT backlight potentiometer Turning th...

Страница 48: ...e sequentially displayed and press ENTER 2 For a 1 channel AT868 proceed to Step 4 For a 2 channel AT868 proceed to Step 3 3 Press X to select the desired channel option and press ENTER 4 At Measureme...

Страница 49: ...nce to enter the user program 2 Press X until RESET appears and press ENTER 3 Press X to select YES or NO and press ENTER 4 To leave the User Program press ESC If you select YES the AT868 resets the t...

Страница 50: ...Chapter 4...

Страница 51: ...Calibration Introduction 4 1 Calibrating and Testing the Analog Outputs 4 1 Calibrating the Totalizer Frequency Outputs 4 4...

Страница 52: ...values for the analog outputs must be calibrated After the end points are calibrated the linearity should be tested Note The zero point of the analog output may be set for either 0 mA or 4 mA However...

Страница 53: ...sted with 5 0 A of the 4 mA setting select ABORT to end the calibration and contact GE for assistance Calibrating the High Point 1 Press X to select 20 mA and press ENTER 2 Press X to select UP or DOW...

Страница 54: ...If the linearity test readings are not with 5 A of the values listed in Table 4 1 check the accuracy and wiring of the ammeter Then repeat the low and high end calibrations If the analog output still...

Страница 55: ...o desired character position and press S and T to increase or decrease the value Then press ENTER Calibrating the Totalizer Outputs To calibrate the totalizer outputs complete the following steps 1 Pr...

Страница 56: ...Appendix A...

Страница 57: ...Menu Maps The CHx ACTIV SYSTM PIPE and I O Menu Map A 1 The GLOBL Menu Map A 2 The CHx SETUP Menu Map A 3 The RESET and CALIB Menu Map A 4...

Страница 58: ...RANSDUCER NUMBER SPEC STD SHEAR RAYL WETTD 2MHz 1MHz 500k 5MHz SPECIAL TRANSDUCER WEDGE TYPE FREQUENCY PLSTC CuNI GLASS OTHER A1 PIPE MATERIAL IRON Cu BRASS STEEL CARBN SS DUCT CAST 10 Ni PYREX 30 Ni...

Страница 59: ...ANDLING D A C OFF 0 20m 4 20m CH1 AVE SUM CH2 DIF appears only for a 2 Channel meter Channel TOTAL Measurement Name VEL VOLUM TOTL TOTL TIME MASS MDOT DIAG MASS BASE all diagnostic parameters appear h...

Страница 60: ...IMIT SOUNDSPEED LIMIT COR PEAK LIMIT SIGNAL LOW LIMIT 32 Max Peak Min Peak of Errors XMIT SAMPLE SIZE 2 RESPONSE TIME 1 30 60 10 5 15min STATS AVRG INIT NO YES Press YES to Default YES NO Mass from St...

Страница 61: ...ALIB To enter the User Program press 4 mA ANALOG OUTPUT UP DOWN 20 mA STORE ABORT SLOT0 YES NO RESET TOTALS Totals are Reset Totals are NOT Reset Cal EXIT TEST Full Scale A or C B or D PULSES TIME use...

Страница 62: ...Appendix B...

Страница 63: ...Measuring P and L Dimensions Measuring P and L B 1...

Страница 64: ...determine L physically measure the distance between the center of the transducer ports at the inside wall as shown in Figure B 1 below If such a measurment is not possible consult the factory for assi...

Страница 65: ...ID of the pipe or slightly retracted inside the coupling Figure B 2 Determining the Pipe Coupling Length Then use the following formula to determine the P dimension For example if inside diameter ID...

Страница 66: ...A Continuous Unmonitored Operation EN 61010 1 1993 A2 1995 Overvoltage Category II Pollution Degree 2 following the provisions of the 89 336 EEC EMC Directive and the 73 23 EEC Low Voltage Directive...

Страница 67: ...USA 1100 Technology Park Drive Billerica MA 01821 4111 Web www gesensing com Ireland Sensing House Shannon Free Zone East Shannon Co Clare...

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