GE Panametrics AquaTrans AT868 Abridged Manual PDF
Contents
1. CH1 CH2 GLOBL See Figure A 1 Y SYSTEM COMM METER MESSAGE Meter Address SYSTEM UNITS BAUD RATE ENG METRIC 00 4800 E OPTION RESET 1 CHANNEL UNITS 2 CHANNEL UNITS English VOLUMETRIC UNITS Metric LCD 3t OF LCD PARAMS 1 1 Y 2 Channel NO UP NOUP appears onl until all channels are set up 2 PATH ERROR HANDLING o VOL DECIMAL DIGITS YES 3 asurement Name c 0 VOLUM TOTL TOTL ERROR HANDLING D English TOTALIZER UNITS Metric Mass 55 DIAG o all diagnostic parameters appear here 0 1 TOTAL DECIMAL DIGITS 1 lt 0 L 2 MASS FLOW OFF MASS FLOW ON English MASS FLOW UNITS y Metric Output Aor C Output Bor D Y OFF 0 20m OFF FREQ lappears only for a 2 Channel meter Channel Y appears only for a 2 Channel meter MASS FLOW TIME Y SUM DIF AVE CH2 SUM DIF AVE SEC MIN asurement Name Frequency Output Totalizer Output MDOT DECIMAL DIGITS VOLUM TOTL TOTL Measurement Measurement Name 1MASS MASS DIAG VEL TOTL TOTL MASS MASS English MASS TOTALS Metri MASS MASS DIAG English 1 BASE gll diagnostic parameters appear here Min Pulse ON Ti FULL all diagnostic parameters appear here UNITS PULSE 1 Error Handling 3 P FU2. 2 MASS TOTALS Metric MASS DECIMAL DIGITS 0 1 PIPE WALL PATH LENGTH P 1 inch AXIAL LENGTH L inch PIPE WALL LINING Y YES LINING SOUNDSPEED LINING THICKNESS 1 0 See Figure A 2 PIPE SOUNDSPEED YES TRACKING WINDOWS FLUID TYPE OTHER FLUID SOUNDSPEED FLUID OIL OTHER MINIMUM SOUNDSPEED MAXIMUM SOUNDSPEED REYNOLDS CORRECTION ACTIV STATC Y KV INPUT SELECTION KINEMATIC VISCOSITY CALIBRATION FACTOR Clamp On Transducers Wetted Transducers NUMBER OF TRAVERSES 1 TRANSDUCER SPACING Menu Maps The CHx ACTIV SYSTM PIPE and Map Figure A 1 A 1 September 2004 To enter the User Program press Keypad Program ESC ENTER ESC PROG RESET CALIB for 2 Channel meters
3. English VOL DECIMAL DIGITS TOTALIZER UNITS Metric TOTAL DECIMAL DIGITS 0 1 MASS FLOW OFF English MASS FLOW ON MASS FLOW UNITS 1 Metric PIPE OD 1 5 TRANSDUCER NUMBER SPECIAL TRANSDUCER WEDGE TYPE SHEAR WETTD Y FREQUENCY ZERO CUTOFF 2MHz WETTD 1 RAYL SHEAR Wetted Type Y Clamp On Type WEDGE ANGLE WEDGE SOUNDSPEED PIPE MATERIAL SETUP See Figure A 3 BRASS OTHER PIPE OD Y feet feet English MASS FLOW TIME SEC MIN MDOT DECIMAL DIGITS
4. 2 18 Taking 2 18 September 2004 Introduction Activating a Channel Menu The AT868 has a user program that provides access to the various programmable features of the unit To program the AT868 you can use either the internal keypad or Panaview which is a PC based non resident software program that communicates with the AT868 through its serial port Note Only the internal keypad programming methods are described in this manual See the PanaView manual for instructions on using that software To begin taking measurements with the AT868 you must at least activate the channels enter the channel data enter the global 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 Only the programming required for initial setup is described in this manual but the menu maps show all available programming features for the 47868 The CHx ACTIV submenu see Figure A 1 on page A 1 is used to activate or deactivate the channels All installed channels should be activated when you receive your unit However you should verify that the channels are active before you begin programming Note n this manual only the programming of Channel 1 is described To program Channel 2 of a 2 channel
5. Press P to select B or D and press ENTER Doone of the following Frequency Output go to Setting Up a Frequency Output on the next page Totalizer Output go to Setting Up a Totalizer Output on page 2 17 Programming Site Data September 2004 Setting Up a Frequency Output 1 At Output B or D select OFF or FREQ and press ENTER Doone of the following Ifyou selected OFF the meter returns to the Global I O menu Go to Setting Up a Totalizer Output on the next page For 1 channel meter go to step 4 Fora2 channel meter go to step 3 At Channel press P to select the desired channel and press ENTER Press P to select the desired measurement parameter and press ENTER Note The measurement units that appear in these prompts are those selected in the GLOBL SYSTM menu earlier in this chapter At BASE enter a value for the low end of the output range 2 000 000 to 2 000 000 by using the arrow keys Press 4 and gt to move the cursor to the desired location and press and W to increase or decrease the number Then press ENTER 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 lt and P gt to move the cursor to the desired location and press and to increase or decrease the number Then press ENTER At FULL SCALE FREQ enter a value for the full scale of
6. Press P to select UP or DOWN to adjust the reading until the ammeter reads exactly 20 mA Press ENTER When the desired reading is achieved select STORE If the ammeter reading cannot be adjusted with 5 0 of the 20 mA setting select ABORT to end the calibration and contact GE for assistance Testing Linearity To test the linearity of the analog outputs complete the following steps UC N Press ESC ENTER ESC in sequence to enter the user program Press gt until CALIB appears and press ENTER Press P until SLOTO appears and press ENTER Press P until C appears and press ENTER Press P to select Test and press ENTER 4 2 Calibration September 2004 Testing Linearity cont 6 Under 96 Full Scale use the arrow keys to enter 50 00 Press lt and P to move the cursor to desired character position and press A and V to increase or decrease the number to the desired value Then press ENTER 7 Check the ammeter reading Table 4 1 below lists the expected ammeter readings at various o Full Scale settings for both 4 20 mA and 0 20 mA scales Use this table to verify the accuracy of your ammeter reading Note fthe linearity test readings are not with 5 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 does not pas
7. until SLOTO appears and press ENTER 4 Press until B or D appears and press ENTER 5 Use the arrow keys to enter the desired pulse width in usec Press and P to move the cursor to desired character position and press and to increase or decrease the value Then press ENTER 6 Use the arrow keys to enter the number of pulses Press lt and gt to move the cursor to desired character position and press A and V to increase or decrease the value Then press ENTER Your counter should display the number of pulses entered N Repeat Steps 5 and 6 until you achieve the desired result 4 4 Calibration Appendix A Menu Maps The CHx ACTIV SYSTM PIPE and I O Menu Map A 1 The GLOBL A 2 The CHx SETUP Menu A 3 The RESET and CALIB Menu A 4 September 2004 To enter the User Program press ESC ENTER ESC PROG RESET CALIB for 2 Channel CH2 GLOBL meters only English SYSTEM CHANNEL LABEL VOLUMETRIC UNITS SITE CHANNEL MESSAGE Metric
8. Installation Introduction iioi reni de UV eec eee EA RR 1 1 Site Considerations ed d 1 1 CE Mark Compliance id tie y 1 4 Making Electrical Connections 1 6 Programming the 868 1 14 September 2004 Introduction Site Considerations Electronics Enclosure Location To ensure safe and reliable operation of the AT868 the system must be installed and programmed in accordance with the guidelines established by GE Those guidelines are explained in detail in this chapter IWARNING Be sure to follow all applicable local safety codes and regulations for installing electrical equipment Consult company safety personnel or local safety authorities to verify the safety of any procedure or practice IATTENTION EUROPEAN CUSTOMERS To meet CE Mark requirements all cables must be installed as described later in this chapter Because the relative location of the flowcell and the electronics enclosure is important use the guidelines in this section to plan the AT868 installation The standard AT868 electronics enclosure is a powder coated aluminum NEMA 4X IP66 weatherproof enclosure see Figure 1 4 on page 1 15 Typically the enclosure is mounted as close as possible to the transducers When choosing a site make sure the location permits easy access to the el
9. Ne 1 11 Wiring an External Totalizer Reset 5 1 14 Programming n AFBBO o dieere DH ide ride ot 1 14 Chapter 2 Programming Site Data ED 2 1 Activating a Channel CHx ACTIV Menu galt o te a al ste er Deus 2 1 Accessing the ACTIV 2 2 Entering System Data CHx SYSTM Meri oe e io tien er yee als e E eo onec 2 2 Accessing the CHASSYSTNI SUbMeEnNU CE ries Dea RE 2 2 Selecting the Volumetric Units v ue Lu estate nr PARE DO E HERREN 2 3 Selecting n sd rure or Led teo M De LM T opes 2 3 Selecting Mass ROW UTES in ede tutes as e t 2 3 Entering Transducer and Pipe Parameters CHx PIPE 2 4 Accessing The PIPE SUMERU 22 possem ee eut et PERF ERAN 2 4 Special 2 5 2 5 Pipe Cusen Cos Mesut phe 2 6 Pipe Outside Diameter Seco ri deseris 2 7 Peine sao SIE RENE RERO E EE 2 7 rae 2 8 Settna Upa Tracki MWINdOW S eos esto tat E obi dee
10. 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 usually considered the DTE device When the RS232 standard is strictly followed these signals are labeled with the same name and pin on the DCE device side Unfortunately the convention is not followed because the DTE and DCE side get confused Therefore connections that imply direction are changed to reflect their direction on the DCE side Installation September 2004 ees Wiring an RS232 Interface 2 Route the flying leads end of the cable through the conduit hole cont and wire the leads to the COMMUNICATION terminal block as shown in Figure 1 5 on page 1 16 Connect the other end of the cable to the printer ANSI terminal or personal computer Then secure the cable clamp 3 Do one of the following Proceed to another section to continue wiring the AT868 Reinstall the plastic shroud replace 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 RS485 serial port to network multiple AT868 flow transmitters to a single computer terminal Upon request the standard RS232 port on the AT868 may be configured as a two wire half duplex RS485 interface through a device such as the INMAC Model 800052 RS232 RS422 RS485 converter Note Ifthe 41868
11. The warranties set forth herein are exclusive and are in lieu of all other warranties whether statutory express or implied including warranties of merchantability and fitness for a particular purpose and warranties arising from course of dealing or usage or trade lii September 2004 Return Policy If a GE Infrastructure Sensing Inc instrument malfunctions within the warranty period the following procedure must be completed 1 Notify GE Infrastructure Sensing Inc giving full details of the problem and provide the model number and serial number of the instrument If the nature of the problem indicates the need for factory service GE Infrastructure Sensing Inc will issue a RETURN AUTHORIZATION number and shipping instructions for the return of the instrument to a service center will be provided 2 If GE Infrastructure Sensing Inc 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 Inc will evaluate the instrument to determine the cause of the malfunction Then one of the following courses of action will then be taken fthe damage is covered under the terms of the warranty the instrument will be repaired at no cost to the owner and returned f GE Infrastructure Sensing Inc determines that the damage is not covered under the terms of the warranty
12. ENTER gt N leave the User Program press ESC If you select YES the AT868 resets the totalizers for both channels If you select NO the totalizers continue to count While the meter 1s operating press and hold the external reset switch for 1 second Both totalizers will reset to zero and will then immediately begin to resume counting IMPORTANT 77e external totalizer reset switch must be configured as described in Chapter 2 Programming Site Data Displaying Data 3 3 Chapter 4 Calibration Introduction Calibrating and Testing the Analog 5 Calibrating the Totalizer Frequency Outputs September 2004 Introduction Calibrating and Testing the Analog Outputs Calibration Follow the instructions in this chapter to calibrate and test the AT868 analog and totalizer frequency outputs Refer to Figure A 4 on page A 4 in Appendix A Menu Maps while following the calibration instructions The AT868 includes one built in analog output per channel with a resolution of 5 0 uA 0 03 full scale Typically Output A is used for Channel 1 and Output C is used for Channel 2 However either output can be configured for use with either channel Both the low and high 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 eit
13. This option is typically used for calibration Doone of the following e f MASS FLOW is ON and both channels are active proceed to Selecting Mass Flow Units below If MASS FLOW is OFF or only one channel is active the meter returns to the Global PROGRAM menu Go to Settings Up the Outputs on the next page Press 4 and P to select the desired mass flow units for the flow rate display and press ENTER The available units for this prompt are determined by the selection made at SYSTEM UNITS on the previous page Press 4 and P to select the desired time units for the mass flow rate display and press ENTER Press 4 and P to select the desired number of digits to the right of the decimal point in the mass flow rate display and press ENTER Press 4 and P to select the desired units for the totalized mass flow rate display and press ENTER The available units for this prompt are determined by the selection made at SYSTEM UNITS on the previous page Press lt and P to select the desired number of digits to the right of the decimal point in the totalized mass flow rate display and press ENTER Programming Site Data September 2004 Setting Up the Outputs To set up the AT868 analog outputs and totalizer frequency outputs GLOBL I O Menu refer to Figure A 2 on page A 2 and follow the instructions in this section Accessing the Analog Output A and Output C are analog outputs th
14. Then secure the cable clamp IMPORTANT Outputs 1 and 2 in the wiring diagram correspond to Outputs A and C in the AT868 software 2 Do one of the following Proceed to another section to continue wiring the AT868 Reinstall the plastic shroud replace the front cover on the enclosure and tighten the screws IMPORTANT Prior to use the analog outputs must be calibrated as described in Chapter 4 Calibration Installation 1 9 September 2004 Wiring the Totalizer Frequency Output The AT868 also provides a second output for each channel designated as Output B and Output D that can be configured as a totalizer or frequency output using the nstrument Data Manager IDM software These outputs can be configured independently Typically Output B is used for Channel 1 and Output D is used for Channel 2 However either output can be configured for use with either channel Figure 1 2 below shows a wiring diagram for a typical totalizer or frequency output circuit Model AT868 Pulse Frequency Counter 45V 200 0 OUT IN c Common Figure 1 2 Totalizer Frequency Output Wiring IWARNING NEVER CONNECT EXTERNAL POWER TO THE PULSE FREQUENCY OUTPUT TERMINALS To wire the totalizer frequency outputs complete the following steps 1 Refer to Figure 1 5 on page 1 16 for the location of the terminal blocks and wire the totalizer frequency outputs as shown Then secure the cab
15. are using your own cables to connect the transducers to the electronics console they must have electrical characteristics identical to the cables supplied by GE For transducer frequencies to 2 MHz the cables in each pair must be the same length within 4 in 10 cm For transducer frequencies above 2 MHz the cables in each pair must be the same length within 50 5 in 1 25 A flowcell is the section of pipe where the transducers are mounted It can be created either by mounting the transducers on the existing pipeline or by mounting them on a spoolpiece A spoolpiece is a separately manufactured pipe section matched to the existing pipe which contains ports for mounting the transducers A spoolpiece allows the transducers to be aligned and calibrated before inserting the flowcell into the pipeline Installation 1 5 September 2004 CE Mark Compliance EMC Compliance For CE Mark compliance the AT868 must meet both the EMC and LVD directives IMPORTANT CE Mark compliance is required for all units intended for use in EEC countries For EMC compliance the electrical connections must be shielded and grounded as in Zable 1 1 below Also refer to Figure 1 1 on the next page an example of acceptable wiring After all the necessary electrical connections have been made seal any unused cable entry holes with standard conduit plugs or equivalent Note fthe instructions in this section are follo
16. only
17. or if the warranty has expired an estimate for the cost of the repairs at standard rates will be provided Upon receipt of the owner s approval to proceed the instrument will be repaired and returned September 2004 Table of Contents Chapter 1 Installation 1 1 SIL GOS OPAL ONS n P a i BO OE ae Ose 1 1 Electronics Enclosure e te er RA o CPV XE Ed m rp Open Ant ns 1 1 PIOW Ge II EGC OU Oat ei MEUM 1 2 cc oodd carne Caneel carne 1 2 Cable oc eee etu sib eite 1 5 Transdueer PUE DN RI SI 1 3 PEREAT REESE PNE HI a OST 1 3 Compliance cet cres Lp ERA ced 1 4 ommo LL epus duda tato t eus ce ie 1 4 pero ello e REPRE ER EE TEE E 1 5 Making Electrical CODneetlolis sceau EE DR CAN 1 6 Preliminary 2 Oder 1 6 POWER 1 7 MERE 1 8 Wiring Standard 0 4 20 mA Analog Outputs 1 9 Wiring the Totalizer Frequency Output 83 See toi ettet e ot e te es 1 10 MING TNE dto i Lo etus
18. 2 6 41 1040 44111044 4 Holes 5 88 149 3 Installation 1 15 September 2004 NOTE For compliance with the European Union s Low Voltage Directive 73 23 EEC this unit requires 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 For compliance with the European Union s Low Voltage Directive 73 23 EEC a transparent plastic shroud protects the electrical connections The shroud must remain in place except while wiring the unit Reinstall the shroud after the wiring has been completed Installation Contrast Adjustment TB3 0 4 20 mA Analog Outputs Pin No Description 7 OUT1 Output 1 RTN 6 OUT1 Output 1 SIG TB3 Frequency Totalizer Outputs Pin No Description 9 1 Output 1 RTN 8 FREQ1 Output 1 SIG TB1 CH1 Transducer Pin No Description 4 SIGDN Downstream SIG 3 RTNDN Downstream RTN 2 RINUP Upstream RTN 1 SIGUP Upstream SIG TB2 CH2 Transducer Sj Pin No Description 85 265VAC 50 60HZ 1 4 4 SIGDN Downstream SIG 4 3 RTNDN Downstream RTN 2 RTNUP Upstream RTN 1 SIGUP Upstream SIG TB4 Frequency Totalizer Outputs Pin No Description 4 FREQ1 Output 1 RT
19. 2 8 EDO TUS Sl Bs hes cma Rods eS Me oh Lite nd id 2 9 Reunolds SOLTectlop us petere ys Moe dato x UR tek et Sat end 2 9 RVI onc reos ten ttt Loft aetas 2 10 Number of Traverses and Transducer Spacing 2 10 Entering the Zero Cutoff Value stain pr eR EPOR 2 11 ode bra De pedi 2 11 September 2004 ees Table of Contents cont Entering Global System Data GLOBL SYSTM 2 12 Selecting GLOBL SYSTM Units oot Cle Dieter 2 12 Selecting the System vocero aes 2 12 Setting Up the External Totalizer Reset Switch irs ee e e RH Vra 2 13 Selecting Mass 2 Cs S SPEC DECR ELE eo ual Mitel 2 13 Setting Up the Outputs GLOBL I O Menu os tuse e ete C Lee OE e eel 2 14 Accessing the Analog Outputs 2 14 Setting Up the Analog Output Scale i tU Eu E E ry e e ulta 2 14 Accessing the Totalizer Frequency 2 15 Setting Up a Frequency Output 2 16 Setting Upa Totalizer ioa c cotes PL utetur RE EOD t Set robe 2 17 Configuring the Communications Port 2 18 T
20. GE Sensing amp Inspection Technologies AquaTrans AT868 Panametrics Liquid Flow Ultrasonic Transmitter Abridged Manual GE Sensing amp Inspection Technologies AquaTrans AT8688 Panametrics Liquid Flow Ultrasonic Transmitter Abridged Manual 914 218D September 2004 The Aquarrans AT868 is a GE Panametrics product GE Panametrics has joined other GE high technology businesses under a new name GE Sensing amp Inspection Technologies September 2004 Warranty Each instrument manufactured by GE Infrastructure Sensing Inc is warranted to be free from defects in material and workmanship Liability under this warranty is limited to restoring the instrument to normal operation or replacing the instrument at the sole discretion of GE Infrastructure Sensing Inc Fuses and batteries are specifically excluded from any liability This warranty is effective from the date of delivery to the original purchaser If GE Infrastructure Sensing Inc determines 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 determines that the equipment was damaged by misuse improper installation the use of unauthorized replacement parts or operating conditions outside the guidelines specified by GE Infrastructure Sensing Inc the repairs are not covered under this warranty
21. LL HIGH OTHER FULL SCALE FREQUENCY Forced milliamps Y Error Handling MASS DECIMAL DIGITS HOLD LOW HIGH OTHER Error frequency 0 Menu Maps September 2004 Menu Maps To enter the User Program press ESC ENTER ESC PROG RESET CALIB y 2 Channel meters only CH2 GLOBL ACTIV See Figure A 1 SYSTEM See Figure A 1 PIPE See Figure A 1 I O I O See Figure A 1 SIGNL SIGNAL LOW LIMIT COR PEAK LIMIT SOUNDSPEED x LIMIT VELOCITY LOW LIMIT VELOCITY HIGH LIMIT ACCELLERATION LIMIT AMP DISCRIM LOW AMP DISCRIM HIGH DELTA T OFFSET 96 of Peak TRANS VOLTAGE XMIT SAMP it of Errors Min Peak 96 Max Peak 96 INIT RESPONSE T Press VES to Default YES Advanced Feature See Figure A 2 KV SS MULTK of KVSS pairs Activate Multi K ass from Static Sig Strength YE
22. N 3 FREQ1 Output 1 SIG Protective Conductor Terminal Backlight Adjustment TB3 RS232 RS485 Serial Port N Pin No Color Description 5 DTR White Data Terminal Ready 4 CTS Yellow Clear to Send 3 COM Green Ground 2 RX Black Receive 1 TX Red Transmit for standard factory cables 704 659 660 661 662 External Totalizer Reset Switch Test Point Description E5 Pole 1 of Switch E9 Pole 2 of Switch Switch hardware is user supplied AC Power Input Pin No Description LINE Line Power NEUT Line Neutral GND Earth Ground DC Power Input Description Line Positive Line Negative No Connection TB4 0 4 20 mA Analog Outputs Pin No Description 2 OUT2 Output 2 RTN 1 OUT2 Output 2 SIG Grounding Jumper Figure 1 5 Wiring Diagram Ref 702 425 1 16 Chapter 2 Programming Site Data gem RR ee eee RR coe ENS 2 1 Activating a Channel CHx ACTIV 2 1 Entering System Data CHx SYSTM Menu 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 2 11 Entering Global System Data GLOBL SYSTM Menu 2 12 Setting Up the Outputs GLOBL I O 2 14 Configuring the Communications Port GLOBL COMM
23. S YES Kin Viscosity id Density Y Custom Type Repeats for the of pairs CODEL Xmit Code Length SHORT LO G entered previously Enter in ascending order CstV CstR Edit table 0 YES Enter of K Factors Velocity K Factor Repeat for the of K Factors entered previously Figure A 3 The CHx SETUP Menu Map A 3 September 2004 es To enter the User Program press ESC ENTER ESC Y Cal RESET TOTALS SLOTO N VES E Y Slot 0 Outputs p Totals are NOT Reset Totals are Reset Aor C BorD ANALOG OUTPUT TIME usec PULSES 4 mA 20 ST 96 Full Scale Figure A 4 The RESET and CALIB MenuMap Menu Maps A 4 Appendix B Measuring P and L Dimensions Measuring P September 2004 Measuring P and L If you are using wetted transducers the AT868 requires you to enter the path length P and the axial dimension L P is the transducer face to face distance and L is the axial projection of P in the f
24. aking emblem orem teda gaan tad 2 18 Chapter 3 Displaying Data ce nec Coto St e etus EHE 3 1 Adjusting LCD Contrast and e ERE er 3 1 Setting Up the Wis play Lu cot oe tae ont OE tart edo oes 3 2 Accessing the Display SUBMENU lt lt tae es neces ARTT gas s 3 2 Contouring the as ito vica att or oU bcr E t i A 3 2 Resettingthe ZENS oes treno est tg hte de tih ca LM Latio 3 3 Resetting Totalizers Using the Internal 3 3 Resetting Totalizers Using an External 5 0 3 3 Chapter 4 Calibration ee ea die eee eMe PIS 4 1 Calibrating and Testing the Analog OBTDUES ent oa a ve eR t ORE RUE ESOS 4 1 4 1 Testing es esr ec Hc er 4 2 Calibrating the Totalizer Frequency Outputs 4 4 Calibrating the Frequency Outputs 7 coste pere Ox E CRO EHE whe 4 4 Calibrating the een tacente voies ter rae aces R etn 4 4 Appendix A Menu Maps Appendix B Measuring P and L Dimensions Pand E EN ts tte ee ener B 1 vi Chapter 1
25. another section to continue wiring the AT868 Reinstall the plastic shroud replace the front cover on the enclosure and tighten the screws Installation 1 13 September 2004 Wiring an External Totalizer Reset Switch Programming the AT868 The AT868 can be wired with an external switch for resetting the totalizer values When properly configured pressing the switch will reset the totalizer values to zero for both Channel 1 and Channel 2 IMPORTANT The 47868 has the capability to use a reset switch but the user must supply all the hardware Complete the following steps 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 Chapter 2 Programming Site Data 3 Do one of the following Proceed to another section to continue wiring the AT868 Reinstall the plastic shroud replace the front cover on the enclosure and tighten the screws After the AT868 has been completely installed and wired reconnect line power and proceed to Chapter 2 Programming Site Data to program the meter for taking flow rate measurements Installation September 2004 Note 1 All dimensions are in inches millimeters AT 868 AquaTrans Flowmeter Figure 1 4 Outline and Installation Wall Mount Ref 712 1106C sht 1 2 86 7
26. at can be configured Outputs independently To configure these outputs complete the following steps Press ESC ENTER ESC in sequence to enter the user program Press gt until PROG appears and press ENTER Press gt until GLOBL appears and press ENTER Press P until appears and press ENTER Press P until OPTN appears and press ENTER W N e Press P to select A or C and press ENTER Setting Up the Analog 1 Press to select the desired output scale and press ENTER Output Scale 2 Do one of the following Ifyou selected OFF the meter returns to the Global I O menu Go to Accessing the Totalizer Frequency Outputs on the next page f you are using 1 channel meter go to step 4 f you are using a 2 channel path meter go to step 3 3 At Channel press P to select the desired channel and press ENTER 4 Press to select the desired measurement parameter and press ENTER Note The measurement units that appear in these prompts are those selected in the GLOBL SYSTM menu earlier in this chapter 5 At BASE enter a flow rate value for the low end of the analog output range by using the arrow keys Press 4 and to move the cursor to the desired location and press and to increase or decrease the number Then press ENTER 2 14 Programming Site Data September 2004 Setting Up the Analog Output Scale cont Accessin
27. console Refer to Figure 1 5 on page 1 16 for a complete wiring diagram IATTENTION EUROPEAN CUSTOMERS To meet CE Mark requirements all cables must be installed as described in the previous section IWARNING Always disconnect the line power from the AT868 before removing the front cover Preliminary Steps Before making any electrical connections prepare the AT868 by 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 the electrical connections Note For compliance with the European Unions Low Voltage Directive 73 23 EEC a transparent plastic shroud protects the electrical connections The shroud must remain in place except while wiring the unit Reinstall the shroud after the wiring has been completed 4 Install any required cable clamps in the appropriate conduit holes on the bottom of the enclosure 5 Note the labels inside the enclosure to assist in wiring Proceed to the appropriate section of this chapter to make the required wiring connections 1 6 Installation September 2004 Wiring the Line Power The AT868 may be purchased for operation with power inputs of 85 265 VAC or 12 28 VDC The label on the side of the electronics enclosure lists the required line voltage and power rating The fuse rating is listed on label located under the fuse IMPORTANT B
28. cursor to the desired location and press and W to increase or decrease the number Then press ENTER Enter the wedge sound speed supplied by GE of the transducer by using the arrow keys Press 4 and P gt to move the cursor to the desired location and press and W to increase or decrease the number Then press ENTER and proceed to Pipe Material on the next page Programming Site Data 2 5 September 2004 Pipe Material If a standard or special clamp on transducer is being used the programming sequence should be rejoined here 1 Press 4 and P to select the pipe material and press ENTER Some of the pipe materials require additional selections See a complete list of choices in Table 2 1 below Table 2 1 Pipe Material Choices STEEL Carbon Steel Stainless Steel IRON Ductile Cast Cu Copper fno additional selection required Al Aluminum no additional selection required BRASS no additional selection required CuNi 70 Cu 30 Ni Copper Nickel 90 Cu 10 Ni GLASS Pyrex Heavy silicate flint Light borate crown Plastic Nylon Polyethylene Polypropylene PVC CPVC Acrylic OTHER Enter the sound speed of the pipe material by using the arrow keys Press and P to move the cursor to desired location and press and to increase or decrease the number and press ENTER 2 6 Programming Site Data September 2004 Pipe Outside Diameter Path and Axia
29. d press ENTER The available units for this prompt are determined by the selection made at SYSTEM UNITS Press 4 and P to select the desired time units for the mass flow rate display and press ENTER Press 4 and P to select the desired number of digits to the right of the decimal point in the mass flow rate display and press ENTER Press 4 and P to select the desired units for the totalized mass flow rate display and press ENTER The available units for this prompt are determined by the selection made at SYSTEM UNITS Press 4 and P to select the desired number of digits to the right of the decimal point in the totalized mass flow rate display and press ENTER Programming Site Data 2 3 September 2004 es Entering Transducer and Enter the transducer and pipe parameters via the PIPE submenu see Pipe Parameters Figure A 1 on page A 1 Menu Accessing the PIPE 1 Press ESC ENTER ESC in sequence to enter the user program Submenu 2 Press until PROG appears and press ENTER 3 Press gt until the desired channel appears Press ENTER at CH1 or CH2 4 Press 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 4 and P to move the cursor to the desired location and press and V to increase or decrease the number Then press ENTER and
30. der our sole responsibility that the AquaTrans AT868 Liquid Flow Ultrasonic Transmitter UPT868 P UltraPure Flow Measurement System to which this declaration relates are in conformity with the following standards EN 61326 1998 Class A Annex A Continuous Unmonitored Operation EN 61010 1 1993 A2 1995 Overvoltage Category Pollution Degree 2 following the provisions of the 89 336 EEC EMC Directive and the 73 23 EEC Low Voltage Directive The units listed above and any transducers supplied with them spoolpieces are addressed under a separate declaration of conformity do not bear CE marking for the Pressure Equipment Directive as they are supplied in accordance with Article 3 Section 3 sound engineering practices and codes of good workmanship of the Pressure Equipment Directive 97 23 EC for DN 25 Shannon June 1 2002 Mr James Gibson GENERAL MANAGER LS EN ISO9002 Shannon ISO 9001 0 5 CERT DOC H4 August 2004 USA 1100 Technology Park Drive Billerica MA 01821 4111 Web www gesensing com Ireland Sensing House Shannon Free Zone East Shannon Co Clare
31. e diameters of straight undisturbed flow downstream from the measurement point Undisturbed flow means avoiding sources of turbulence in the fluid such as valves flanges expansions and elbows avoiding swirl and avoiding cavitation Locate the transducers on a common axial plane along the pipe Install the transducers on the side of the pipe instead of the top or bottom because the top of the pipe accumulates gases and the bottom of the pipe accumulates sediment These conditions cause attenuation of the ultrasonic signal There is no similar restriction with vertical pipes However vertical pipes with downward flow should be avoided to ensure a full pipe at the measurement point 1 2 Installation September 2004 Cable Lengths Transducer Cables Installing a Flowcell Locate the electronics enclosure as close as possible to the flowcell preferably directly on the flowcell However GE can supply transducer cables up to 1 000 ft 300 m in length for remote location of the electronics enclosure If longer cables are required consult the factory for assistance When installing the transducer cables always observe established standard practices for the installation of electrical cables Do not route transducer cables alongside high amperage AC power lines or any other cables that could cause electrical interference Also protect the transducer cables and connections from the weather and corrosive atmospheres Note fyou
32. e sure to connect the meter only to the specified line voltage Note For compliance with the European Unions Low Voltage Directive 73 23 EEC this unit requires 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 Refer to Figure 1 5 on page 1 16 to locate the power input terminal block and connect the line power as follows IWARNING Improper 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 within the electronics enclosure 1 Prepare the line power leads by trimming the line and neutral AC power leads or the positive and negative DC power leads to a length 0 5 in 12 mm shorter than the ground lead This ensures that the ground lead is the last to detach if the power cable is forcibly disconnected from the meter 2 Install a suitable cable clamp in the conduit hole where the line power wires will enter the enclosure If possible avoid using a conduit hole containing any other cables cables to minimize any interference in the circuitry from the AC power line 3 Strip 1 4 in of insulation from the end of each of the three line power leads 4 Route the cable through the conduit hole and connect the line power leads to the power
33. ectronics enclosure for programming maintenance and service Note For compliance with the European Unions Low Voltage Directive 73 23 EEC this unit requires 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 Installation 1 1 September 2004 ee Flowcell Location A flowcell is the section of pipe where the transducers are mounted It can be created either by mounting the transducers on the existing pipeline or by mounting them on a spoolpiece A spoolpiece is a separately manufactured pipe section matched to the existing pipe which contains ports for mounting the transducers A spoolpiece allows the transducers to be aligned and calibrated before inserting the flowcell into the pipeline Ideally install the flowcell in a section of pipe with unlimited access such as a long section of pipe that is above ground However if the flowcell must be installed in an underground pipe dig a pit around the pipe to facilitate installation Transducer Location For a given fluid and pipe the accuracy 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 so that there are at least 10 pipe diameters of straight undisturbed flow upstream and 5 pip
34. er Spacing below Wetted Transducers The meter returns to the Channel PROGRAM window To complete initial setup of the AT868 you must enter data in the GLOBL SYSTM submenu on page 2 12 Press 4 and P to select the number of traverses and press ENTER Enter the value for the transducer spacing by using the arrow keys Press 4 and P to move the cursor to the desired location and press A and to increase or decrease the number Then press ENTER 2 10 Programming Site Data September 2004 Entering the Zero Cutoff Near a zero flow rate the AT868 readings may fluctuate due to small Value Menu offsets caused by thermal drift or similar factors To force a zero display reading when there is minimal flow enter a zero cutoff value as described below see Figure A 1 on page A 1 1 2 Press ESC ENTER ESC in sequence to enter the user program Press until PROG appears and press ENTER Press P until the desired channel appears Press ENTER at CH1 or CH2 Press P until appears and press ENTER 5 Enter a value from 0 to 1 ft sec 0 to 0 30 m sec for the zero cutoff by using the arrow keys The recommended setting is 0 1 ft sec 0 03 m sec Press 4 and gt to move the cursor to the desired location and press A and to increase or decrease the number Then press ENTER Activating Mass Flow Use this option to calculate mass flow fro
35. es and Transducer Spacing on the next page Wetted Transducers The meter returns to the Channel PROGRAM window To complete initial setup of the AT868 you must enter data in the GLOBL SYSTM submenu on page 2 12 Ifyou selected ACTIV proceed to KV Input Selection on the next page Programming Site Data 2 9 September 2004 KV Input Selection Number of Traverses and Transducer Spacing 1 2 Press 4 and P to enter a static kinematic viscosity or a table of values and press ENTER Do one of the following Ifyou selected Table enter the Calibration Factor by using the arrow keys Press 4 and to move the cursor to the desired location and press and to increase or decrease the number Then press ENTER Ifyou selected STATC the AT868 will select and automatically display the Kinematic Viscosity see note below If you want to enter a different number use the 4 and P gt to move the cursor to the desired location and press A and V to increase or decrease the number Then press ENTER Enter the Calibration Factor in a similar manner and press ENTER Note fyou select OTHER as the fluid type you must enter the 1 Kinematic Viscosity The AT868 will only approximate the Kinematic Viscosity if you select one of the specific available fluid options Proceed to one of the following sections Clamp on Transducers proceed to Number of Traverses and Transduc
36. g the Totalizer Frequency Outputs At FULL enter a flow rate value for the high end of the analog output range by using the arrow keys Press 4 and to move the cursor to the desired location and press and V to increase or decrease the number Then press ENTER At Error Handling press P to select the desired option for handling errors HOLD LOW HIGH or OTHER and press ENTER If OTHER is selected the Forced milliamps display appears This allows the user to impose a set value for this option Enter the desired forced milliamps value by using the arrow keys Press lt d and gt to move the cursor to the desired location and press A and V to increase or decrease the number Then press ENTER A totalizer output issues one pulse per selected volume of flow and the meter produces a pulse each time the programmed amount of flow passes through the pipe A frequency output issues a frequency that is proportional to the assigned measurement parameter Output B and Output D are totalizer frequency outputs that can be configured independently To configure these outputs complete the following steps N HB Press ESC ENTER ESC in sequence to enter the user program Press gt until PROG appears and press ENTER Press gt until GLOBL appears and press ENTER Press P until appears and press ENTER Press P until OPTN appears and press ENTER
37. he number Then press ENTER Note 4 complete pulse consists of equal amounts of ON and OFF times Choose a value that is compatible with the pulse counter to be used 6 At UNITS PULSE enter a value for the number of measurement units represented by each pulse and press ENTER Programming Site Data September 2004 Configuring the Communications Port GLOBL COMM Taking Measurements The AT868 is equipped with a built in serial communications port as described in Chapter 1 nstallation Refer to Figure A 2 on page A 2 and use the GLOBL COMM menu to set up the communications port by completing the following steps Press ESC ENTER ESC in sequence to enter the user program Press gt until PROG appears and press ENTER Press gt until GLOBL appears and press ENTER Press gt until COMM appears and press ENTER NW N Enter a meter address between 1 and 254 by using the arrow keys The default number is 1 Press 4 and P gt to move the cursor to the desired location and press A and V to increase or decrease the number Then press ENTER Note A meter address is only necessary for communication with the GE Panaview software See the Panaview User s Manual for more information 6 Press to select a baud rate and press ENTER The AT868 has now been totally programmed for taking accurate flow rate measurements Proceed to Chapter 3 Displaying Data fo
38. he ultrasonic signal and press ENTER Select the desired units and press ENTER Proceed to Setting Up a Tracking Window on the next page Programming Site Data 2 7 September 2004 ee Lining 1 Press lt 4 and P to select ves if your pipe has a lining or No if your pipe does not have a lining Then press ENTER 2 Do one of the following Ifyou selected No proceed to Setting Up a Tracking Window below f you selected Yes continue with the next step 3 Press 4 and P to select the lining material and press ENTER 4 If you selected OTHER enter the lining sound speed by using the arrow keys Press 4 and P to move the cursor to the desired location and press and V to increase or decrease the number Then press ENTER 5 Enter the lining thickness by using the arrow keys Press 4 and gt to move the cursor to the desired location and press and W to increase or decrease the number Then press ENTER Setting Up a Tracking The Tracking Window feature enables you to make accurate Window measurements when the fluid sound speed is unknown or when the fluid sound speed varies due to changing process conditions 1 At the TRACKING WINDOWS prompt select YES If you do not know the fluid sound speed proceed to Step 2 NO If you do know the fluid sound speed proceed to Fluid Type on the next page 2 Doone of the following Ifthe fluid sound speed is
39. her 0 mA or 4 mA However the calibration procedure always uses the 4 mA point as the meter will extrapolate this value to obtain the 0 mA point Prepare for calibration by connecting an ammeter in series with the load on analog output 1 or 2 as shown in Figure 4 1 below DO NOT connect the ammeter directly across the terminals Refer to Figure 1 5 on page 1 16 for the locations of the analog outputs terminal blocks Note Analog outputs 1 and 2 in the wiring diagram correspond to analog outputs A and C in the 47868 software Ammeter Figure 4 1 Ammeter Connection Calibration 4 1 September 2004 Calibration cont To calibrate the analog outputs complete the following steps Accessing the Calibration Menu Calibrating the Low Point 1 Calibrating the High Point 1 1 2 3 4 Press ESC ENTER ESC in sequence to enter the user program Press gt until CALIB appears and press ENTER Press until SLOTO appears and press ENTER Press gt until A or C appears and press ENTER Press to select 4 mA and press ENTER Press P to select UP or DOWN to adjust the reading until the ammeter reads exactly 4 mA Press ENTER When the desired reading is achieved select STORE If the ammeter reading cannot be adjusted with 5 0 of the 4 mA setting select ABORT to end the calibration and contact GE for assistance Press to select 20 mA and press ENTER
40. is configured at the factory for RS485 operation the INMAC converter is not necessary Proceed to the appropriate following section to wire the RS485 interface 1 12 Installation September 2004 Using an INMAC Converter wire the RS485 serial port using an INMAC converter refer to Figure 1 5 on page 1 16 and complete the following steps 1 Route one end of the cable through the conduit hole and wire the leads to the COMMUNICATION terminal block as shown in Figure 1 5 on page 1 16 Then secure the cable clamp 2 Connect the other end of the cable to the converter as shown in Figure 1 3 below 3 Do one of the following Proceed to another section to continue wiring the AT868 Reinstall the plastic shroud replace the front cover on the enclosure and tighten the screws Model AT868 N C 5 Converter N C 4 e 1 TD OUT N C 3 RX 2 1 Figure 1 3 Typical RS485 Connections Using a Factory Serial Use the following steps to link the AT868 to the control system using Interface a factory installed RS485 serial interface 1 Route the wires through the conduit hole and connect the TMT lead to Pin 2 RX on the COMMUNICATION terminal block see Figure 1 5 on page 1 16 2 Connect the TMT lead to Pin 1 TX on the COMMUNICATION terminal block Then secure the cable clamp 3 Connect the other end of the cable to the control system 4 Do one of the following Proceed to
41. l Length The programming sequence should be rejoined here for all transducers 1 Press to move the cursor to the outside diameter units Press A and V to select the desired units and press ENTER Measure either the pipe outside diameter OD or circumference at the transducer installation site Enter the measured dimension by using the arrow keys Press 4 and P to move the cursor to the desired location and press A and to increase or decrease the number Then press ENTER Enter the know thickness of the pipe wall by using the arrow keys Press 4 and P to move the cursor to the desired location and press and to increase or decrease 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 Doone of the following wetted transducers proceed to Path and Axial Length below clamp on transducers proceed to Lining on the next page Note fa spoolpiece was ordered with the meter the transducer signal path length P and the transducer signal axial length L are engraved on the flowcell and are included in the documentation supplied with the meter For on site transducer installations refer to Appendix B Measuring P and L Dimensions for instructions Enter the path length P of the ultrasonic signal Select the desired units and press ENTER Enter the axial length L of t
42. le clamp Note Outputs 1 and 2 in the wiring diagram correspond to Outputs B and D in the AT868 software 2 Do one of the following Proceed to another section to continue wiring the AT868 Reinstall the plastic shroud replace the front cover on the enclosure and tighten the screws Installation September 2004 Wiring the Serial Port The AT868 is equipped with a built in serial communications port The standard port is an RS232 interface but an optional RS485 interface is available upon request Proceed to the appropriate section for wiring instructions Wiring an RS232 Interface Use the serial port to connect the AT868 to a printer an ANSI terminal or a personal computer The RS232 interface is wired as Data Terminal Equipment DTE and the signals available at the COMMUNICATION terminal block are shown in Table 1 2 below To wire the RS232 output complete the following steps 1 Use the information in Zable 1 2 below to construct a suitable cable for connecting the AT868 to the external device If desired an appropriate cable may be purchased from GE Table 1 2 RS232 Connection to DCE or DTE Device Colors for COMMUNICATION GE Cable TB flying leads White Signal Description DTR Data Terminal Ready Yellow CTS Clear to Send Green COM Ground Red RX Receive Black TX Transmit For standard GE cables 704 659 660 661 and 662 Note
43. lect the desired number of parameters to be sequentially displayed and press ENTER 2 Fora l channel AT868 proceed to Step 4 For a 2 channel AT868 proceed to Step 3 3 Press to select the desired channel option and press ENTER 4 At Measurement Name press P to select the desired parameter and press ENTER 5 Repeat the two previous steps until all of the specified of LCD PARAMS have been set up Note The measurement units that appear in these prompts are those selected in the GLOBL SYSTM menu as described in Chapter 2 Programming Site Data After leaving the User Program the AT868 will reset and will begin to display the parameters specified in this section If more than one parameter was set up each of the parameters will be displayed in sequence with a pause of several seconds between display changes 3 2 Displaying Data September 2004 Resetting the Totalizers Resetting Totalizers Using the Internal Keypad Resetting Totalizers Using an External Switch To reset the totalizers you can use either the internal keypad or an external switch When resetting the totalizers the totals for both channels are reset Use the appropriate section below to reset the totalizers See Figure A 4 on page A 4 in Appendix A Menu Maps Then Press ESC ENTER ESC in sequence to enter the user program Press gt until RESET appears and press ENTER Press P to select YES or NO and press
44. low stream To 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 assistance Pipe Thickness Gy AES AA Top View Figure B 1 180 Transducer Installations To determine P you need the following information the pipe inside diameter ID the pipe wall thickness WT the installed pipe coupling length CL the transducer face depth FD the mounting angle MA Measuring P and L Dimensions B 1 September 2004 Measuring P and L cont Use Figure B 2 below to properly measure the pipe coupling length Typically the transducer face is positioned just outside the inside diameter 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 ID 2 WT 2 5 For example if inside diameter ID 48 wall thickness WT 3 8 installed coupling length CL 2 0 transducer face depth FD 1 75 mounting angle MA 45 Then the P dimension would be 28 200375 9 2 0 1 75 694 cos 45 B 2 Measuring P and L Dimensions DECLARATION Sensing CONFORMITY We Panametrics Limited Shannon Industrial Estate Shannon County Clare Ireland declare un
45. m a static fluid density Complete the following steps see Figure A 3 on page A 3 to enter the static density of the fluid 1 2 CJ Press ESC ENTER ESC in sequence to enter the user program Press until PROG appears and press ENTER Press P until the desired channel appears Press ENTER at CH1 or CH2 Press gt until SETUP appears and press ENTER Press gt until ADVAN appears and press ENTER Press gt until MASS appears and press ENTER Press P to activate or deactivate mass flow mass flow is calculated from a static density and press ENTER If you have activated mass flow enter the fluid density by using the arrow keys Press 4 and P to move the cursor to the desired location and press A and to increase or decrease the number Then press ENTER Programming Site Data 2 11 September 2004 Entering Global System Data GLOBL SYSTM Menu Selecting the GLOBL SYSTM Units Selecting the System Units Refer to Figure A 2 on page A 2 and complete the steps below to enter system information in the GLOBL menu Press ESC ENTER ESC in sequence to enter the user program Press gt until PROG appears and press ENTER Press gt until GLOBL appears and press ENTER Press gt until SYSTM appears and press ENTER C N Enter a short message up to 16 characters by using the arrow keys Pre
46. meter simply repeat the same procedures described for Channel 1 Programming Site Data 2 1 September 2004 Accessing the ACTIV 1 Press gt until PROG appears and press ENTER Submenu Press ESC ENTER ESC in sequence to enter the user program Press until the desired channel appears Press ENTER at CH1 or CH2 Press P until ACTIV appears and press ENTER Press gt until TRANS appears and press ENTER Selecting TRANS activates the channel If you have a 2 channel unit you can also disable a channel However if you select OFF for a channel you will not be able to program that channel After completing the above step the user program returns to the Channel PROGRAM menu To continue entering your initial setup data proceed to the next section Entering System Data The CHx SYSTM submenu see Figure A 1 on page A 1 is used to CHx SYSTM Menu enter system parameters for the individual channels In situations where the channels operate independently the AT868 uses the system parameters in this menu When channels are averaged together the AT868 uses the parameters entered in the GLOBL SYSTM submenu Accessing the CHx SYSTM 1 2 Submenu Press ESC ENTER ESC in sequence to enter the user program Press until PROG appears and press ENTER Press P until the desired channel appears Press ENTER at CH1 or CH2 Press gt until SYSTM appears and
47. ockwise very slowly until the display is clear and sharp As there is some interaction readjust the BKLT control if necessary Replace the front cover and secure it in place with the screws CONT Potentiometer BKLT Potentiometer CH1 e z Mm NS E CIE Figure 3 1 CONT and BKLT Potentiometers Displaying Data 3 1 September 2004 Setting Up the Display Accessing the Display Submenu Configuring the Display Follow the instructions in this section to display the desired data on the display screen see Figure A 2 on page A 2 in Appendix A Menu Maps Press ESC ENTER ESC in sequence to enter the user program Press gt until PROG appears and press ENTER 1 2 3 Press gt until GLOBL appears and press ENTER 4 Press until appears and press ENTER 5 Press gt until LCD appears and press ENTER 1 At of LCD PARAMS press P to se
48. press ENTER Enter the desired CHANNEL LABEL up to 5 characters by using the arrow keys Press 4 and to move the cursor to the desired location and press V to change a letter Then press ENTER Use the arrow keys to enter the desired SITE MESSAGE up to 16 characters and press ENTER For a 2 channel meter this prompt is called CHANNEL MESSAGE 2 2 Programming Site Data September 2004 Selecting the Volumetric 1 Units 2 Selecting the Totalizer 1 Units Selecting Mass Flow Units 1 Use the arrow keys to select the desired volumetric units for the flow rate display and press ENTER Use the arrow keys to select the desired number of digits to the right of the decimal point in the volumetric flow rate display and press ENTER Use the arrow keys to select the desired units for the totalized flow rate display and press ENTER Use the arrow keys to select the desired number of digits to the right of the decimal point in the totalized flow rate display and press ENTER Doone of the following If MASS FLOW is ON and both channels are active for 2 channel units only proceed to Selecting Mass Flow Units below 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 Press 4 and P to select the desired mass flow units for the flow rate display an
49. proceed to the next step For special transducers proceed to the next section 6 Go to one of the following sections Standard clamp on transducers proceed to Pipe Material on page 2 6 Standard wetted transducers proceed to Pipe Outside Diameter on page 2 7 2 4 Programming Site Data September 2004 Special Transducers Special Clamp On Transducers Fora special transducer press to move the cursor to STD and press A until SPEC appears and press ENTER Assign a number between 90 and 99 to the special transducer Enter the number by using the arrow keys Press 4 P to move the cursor to the desired location and press A and V to increase or decrease the number Then press ENTER Press 4 P to select the wedge type supplied by GE and press ENTER Press 4 and P to select the transducer frequency supplied by GE and press ENTER Enter the special transducer time delay value supplied by GE by using the arrow keys Press 4 and to move the cursor to desired location and press A and to increase or decrease the number and press ENTER The following two prompts appear only if special clamp on transducers are being used If special wetted transducers are being used proceed to Pipe Outside Diameter on page 2 7 1 Enter the wedge angle supplied by GE of the transducer by using the arrow keys Press 4 and to move the
50. r instructions on configuring the display 2 18 Programming Site Data Chapter 3 Displaying Data ue a dk eee code ENS 3 1 Adjusting LCD Contrast and Brightness 3 1 Setting Up the 1 5 3 2 Resetting the Tot llzers oe eva e EE REX Eee ERE 3 3 September 2004 Introduction Adjusting LCD Contrast and Brightness The AT868 is equipped with a Liquid Crystal Display LCD which may be programmed to display up to four variables in sequence Both the brightness and the contrast of the LCD are easily adjusted by following the instructions in this chapter In addition instructions are provided for resetting the totalizers and pausing the measurements The AT868 has two adjustment potentiometers located on the LCD circuit board see Figure 3 1 below To make contrast and brightness adjustments complete the following steps 1 2 Loosen the screws and remove the front cover With power still applied to the meter carefully use a small screwdriver to adjust the BKLT backlight potentiometer Turning the control completely clockwise yields maximum brightness Ina similar manner adjust the CONT contrast potentiometer to set the contrast as desired At either extreme of the CONT control the display is unreadable To make the adjustment turn the control fully counterclockwise and then turn it cl
51. s are the leads Note The 47868 can use two channels or paths to make more accurate flow measurements by averaging subtracting or adding the the two readings 1 8 Installation September 2004 Wiring Transducers cont Wiring Standard 0 4 20 mA Analog Outputs 4 For a 2 Channel AT868 repeat steps 1 3 to connect the CH2 transducers to the DN and UP terminal block for Channel 2 Note t is not required that both channels of 2 Channel unit be connected 5 Do one of the following Proceed to another section to continue wiring the AT868 Reinstall the plastic shroud replace the front cover on the enclosure and tighten the screws IMPORTANT Each channel must be activated before it can begin taking measurements See Chapter 2 Programming Site Data for instructions The AT868 has one isolated 0 4 20 mA analog output per channel designated as Output A and Output C These outputs can 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 analog outputs may be made with standard twisted pair wiring but the current loop impedance for these circuits must not exceed 600 ohms To wire the analog outputs complete the following steps 1 Refer to Figure 1 5 on page 1 16 for the locations of the appropriate terminal blocks and wire the analog outputs as shown
52. s the linearity test contact GE for assistance 8 Repeat Step 2 for a different output percentage 0 100906 Check the ammeter reading at this setting and press ENTER when done Table 4 1 Expected Ammeter Readings 96 Full Scale 4 20 mA Scale 0 20 mA Scale all ammeter readings should be 40 005 mA Calibration 4 3 September 2004 Calibrating the Prepare for the calibration procedure by connecting a frequency Totalizer Frequency counter to the appropriate terminal blocks see Figure 1 5 on page Outputs 1 16 Note Outputs 1 and 2 in the wiring diagram correspond to Outputs B and D in the AT868 software Calibrating the Frequency calibrate the frequency outputs complete the following steps Outputs Press ESC ENTER ESC in sequence to enter the user program Press gt until CALIB appears and press ENTER 1 2 3 Press until SLOTO appears and press ENTER 4 Press until B or D appears and press ENTER 5 Use the arrow keys to enter the desired frequency Press 4 and P gt to move the cursor to desired character position and press A and V to increase or decrease the value Then press ENTER Calibrating the Totalizer To calibrate the totalizer outputs complete the following steps Outputs Press ESC ENTER ESC in sequence to enter the user program Press gt until CALIB appears and press ENTER 1 2 3 Press
53. ss 4 and P gt to move the cursor to the desired location and press and to select the desired character Then press ENTER 1 Press to select the system units and press ENTER 2 Do one of the following 1 Channel Meters go to Setting Up the External Totalizer Reset Switch on the next page 2 Channel Meters continue with the next step 3 Press to select the volumetric units for the flow rate display and press ENTER 4 Press to select the number of digits to the right of the decimal point in the volumetric flow rate display and press ENTER 5 Press P to select the desired units for the totalized flow rate display and press ENTER 6 Press to select the desired number of digits to the right of the decimal point in the totalized flow rate display and press ENTER 2 12 Programming Site Data September 2004 Setting Up the External If you have installed an external totalizer reset switch as described in Totalizer Reset Switch Chapter 1 Installation the GATE OPTION enables you to configure the switch 1 At the GATE OPTION prompt press to select one of the Selecting Mass Flow Units 1 following and press ENTER RESET the meter resets totals to zero for both channels and then immediately begins to count again HOLD the meter holds totals at the current point for both channels The meter will not count as long as the switch remains closed
54. terminal block as shown in Figure 1 5 on page 1 16 Installation 1 7 September 2004 eee Wiring the Line Power 5 Leaving a bit of slack secure the power line with the cable clamp cont Caution Do not apply power to the AT868 until after the transducers have been properly wired 6 Do one of the following Proceed to another section to continue wiring the AT868 Reinstall the plastic shroud replace the front cover on the enclosure and tighten the screws Wiring Transducers IWARNING Before connecting the transducers discharge any static buildup by shorting the center conductor of the transducer cables to the metal shield on the cable connector Note For transducer frequencies below 2 MHz the cable 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 transducer cables and connect them to the two CHI transducers Route the free ends of the cables through the selected conduit hole in the electronics enclosure 2 If an optional lightening protector is being installed connect it between the meter and the transducers 3 Refer to the wiring diagram in Figure 1 5 on page 1 16 and connect the transducer cables to the terminal block labeled DN and UP for Channel 1 Then secure the cable clamp Note The RED cable leads are the S G leads and the BLACK cable lead
55. the output between 10 to 100 000 by using the arrow keys Press 4 and P gt to move the cursor to the desired location and press and to increase or decrease the number Then press ENTER At Error handling press P to select the desired option for handling errors HOLD LOW HIGH or OTHER and press ENTER If OTHER is selected the Error frequency display appears This allows the user to enter a set value for this option Enter the desired error frequency by using the arrow keys Press 4 and gt to move the cursor to the desired location and press and to increase or decrease the number Then press ENTER 2 16 Programming Site Data September 2004 Setting Up a Totalizer Output At Output B or D select OFF or TTLZR and press ENTER Doone of the following Ifyou selected OFF the meter returns to the Global I O menu Go to Configuring the Communications Port on the next page For 1 channel meter go to step 4 Fora2 channel path meter go to step 3 At Channel press P to select the desired channel and press ENTER Press P to select the desired measurement parameter and press ENTER Enter a value for the minimum pulse on time between 50 usec and 500 000 usec for the frequency of the totalizer pulses and press ENTER Press lt 4 and to move the cursor to the desired location and press and to increase or decrease t
56. variable the Tracking Window must remain active Proceed to Fluid Type on the next page to complete the programming your meter Ifthe sound speed is constant or if you want to determine if the sound speed is constant continue with Step 3 3 Proceed to Fluid Type on the next page to complete the programming your meter 2 8 Programming Site Data September 2004 Fluid Type Reynolds Correction 1 The selections for fluid type vary depending on whether the Tracking Window is enabled or disabled Press and P to select the desired fluid and press ENTER Refer to Table 2 2 below for a list of available fluids Table 2 2 Fluid Types Tracking Window NO Tracking Window YES WATER W100 Water 0 100 C OTHER W260 Water 0 260 C Oil Tracking OTHER 2 If you selected OTHER enter the additional information required by using the arrow keys Press 4 and 0 to move the cursor to the desired location and press and to increase or decrease the number Then press ENTER 1 Using 4 and P select Activ to activate the Reynolds Correction Factor or select Off to deactivate the Reynolds Correction Factor Then press ENTER Note usually Reynolds Correction should be set to Activ 2 Doone of the following Ifyou selected OFF enter the Calibration Factor and press ENTER Then proceed to one of the following sections Clamp on Transducers proceed to Number of Travers
57. wed the unit will comply with the EMC Directive 89 336 EEC Connection Transducer Table 1 1 Wiring Modifications Cable Type Termination Modification Add metallic cable clamp from braid to chassis ground Armored RG62 a u or conduit Terminate RG62 a u shield to chassis ground Input Output 22 AWG Shield e g Baystate 78 1197 Terminate shield to chassis ground at the 868 Armored conduit None grounded via cable gland 14 AWG 3 conductor shielded e g Belden 419364 Terminate shield to chassis ground at the 868 Armored Conduit None grounded via cable gland Shielding Wires enclosed in a properly grounded metal conduit do not require additional shielding 1 4 Installation September 2004 LVD Compliance For compliance with the European Union s Low Voltage Directive 73 23 EEC the analyzer requires 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 Jf the instructions in this section are followed the unit will comply with the Low Voltage Directive 73 23 EEC Figure 1 1 Properly Wired AT868 Installation 1 5 September 2004 a a Making Electrical This section contains instructions for making all the necessary Connections electrical connections to the AT868 electronics
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