GE AquaTrans AT868 User Manual
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GE AquaTrans AT868 User Manual

Ultrasonic flow transmitter for water (1- & 2-channel)
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GE Infrastructure
Sensing
Model AT868 AquaTrans™
Ultrasonic Flow Transmitter for Water (1- & 2-Channel)
User's Manual
910-218D
September 2004

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Summary of Contents for GE AquaTrans AT868

  • Page 1 GE Infrastructure Sensing Model AT868 AquaTrans™ Ultrasonic Flow Transmitter for Water (1- & 2-Channel) User’s Manual 910-218D September 2004...
  • Page 2 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.

  • Page 3: Table Of Contents

    September 2004 Table of Contents Chapter 1: Installation Introduction................1-1 Unpacking .
  • Page 4 September 2004 Table of Contents (cont.) Chapter 2: Programming Site Data Introduction ................2-1 Activating a Channel/Path - CHx-ACTIV.
  • Page 5 September 2004 Table of Contents (cont.) Chapter 3: Displaying Data Introduction................3-1 Adjusting LCD Contrast and Brightness .
  • Page 6 September 2004 Table of Contents (cont.) Chapter 7: Parts Replacement Introduction ................7-1 Replacing the LCD Display/Keypad.
  • Page 7 September 2004 Table of Contents (cont.) Appendix F: PanaView™ for IDM-Compatible Meters (916-086B) Introduction................F-1 IDM-Compatible Flowmeters.
  • Page 8 Chapter 1...
  • Page 9 Installation Introduction........... . 1-1 Unpacking .

  • Page 10: Introduction

    To ensure safe and reliable operation of the Model AT868 Flowmeter, the system must be installed and programmed in accordance with the guidelines established by GE Infrastructure Sensing engineers. Those guidelines, explained in detail in this chapter, include the following topics: •...

  • Page 11: Unpacking

    September 2004 Unpacking Carefully remove the electronics enclosure, the transducers, and the cables from the shipping containers. Before discarding any of the packing materials, account for all components and documentation listed on the packing slip. The discarding of an important item along with the packing materials is all too common.

  • Page 12: Cable Lengths

    Locate the electronics enclosure as close as possible to the flowcell/transducers, preferably directly on the flowcell. However, GE Infrastructure Sensing 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.

  • Page 13: Making Electrical Connections

    September 2004 Making Electrical This section contains instructions for making all the necessary Connections electrical connections to the Model AT868 flow transmitter. Refer to Figure 1-4 on page 1-14 for a complete wiring diagram. !ATTENTION EUROPEAN CUSTOMERS! To meet CE Mark requirements, all cables must be installed as described in Appendix B, CE Mark Compliance.
  • Page 14 September 2004 Wiring the Line Power Refer to Figure 1-4 on page 1-14 to locate the power terminal block (cont.) and connect the line power as follows: !WARNING! Improper connection of the line power leads or connecting the meter to the incorrect line voltage may damage the unit.

  • Page 15: Wiring Transducers

    September 2004 Wiring Transducers !WARNING! 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.

  • Page 16: Wiring Std 0/4-20 Ma Analog Outputs

    September 2004 Wiring Std 0/4-20 mA The Model AT868 flow transmitter has one isolated 0/4-20 mA Analog Outputs analog output per channel (designated as Output A and C). These outputs can be configured independently. Typically, Output A is used for Channel 1 and Output C is used for Channel 2; however, analog outputs can be configured to measure either channel.

  • Page 17: Wiring The Totalizer/Frequency Output

    September 2004 Wiring the Totalizer/ The Model AT868 also provides a second output per channel Frequency Output (designated as Output B and D) that can be configured as a totalizer or frequency output using the Instrument Data Manager (IDM) software. Like the analog outputs, these outputs can also be configured independently.

  • Page 18: Wiring The Serial Port

    *For standard GE Infrastructure Sensing cables 704-659, -660, -661 and -662. Note: Signal names that imply direction (e.g., transmit and receive) are named from the point of view of the DTE device (the GE Infrastructure Sensing meter is usually considered the DTE device).
  • Page 19 September 2004 Wiring an RS232 Interface 3. Feed the flying leads end of the cable through the conduit hole and (cont.) wire the leads to the COMMUNICATON terminal block as shown in Figure 1-4 on page 1-14. Connect the other end of the cable to the printer, ANSI terminal or personal computer, and secure the cable clamp.
  • Page 20 September 2004 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.

  • Page 21: Wiring An External Totalizer Reset Switch

    September 2004 Using a Factory- Use the following steps to link the AT868 to the control system using Configured Serial Interface a factory-configured RS485: 1. Follow the instructions on page 1-4 to prepare the unit before you connect power. 2. Feed the wires through the conduit hole and wire lead TMT+ to pin 2 (RX) on the COMMUNICATION terminal block (refer to Figure 1-4 on page 1-14 for the terminal block location).
  • Page 22 September 2004 Installation 1-13...
  • Page 23 September 2004 Installation 1-14...
  • Page 24 Chapter 2...
  • Page 25 Programming Site Data Introduction........... . 2-1 Activating a Channel/Path - CHx-ACTIV .

  • Page 26: Introduction

    September 2004 Introduction The Model AT868 flow transmitter has a user program that provides access to the various programmable features of the unit. To program the AT868 you can use the internal keypad or Panaview™, a PC- based, non-resident software program that communicates with the AT868 through its serial port.

  • Page 27: Activating A Channel/Path - Chx-Activ

    September 2004 Activating a Channel/ ACTIV submenu is used to activate/deactivate the channel/path. Path - CHx-ACTIV The channel/path should be activated when you receive your unit; however, you should verify that the channel/path is active before you begin programming. While following the programming instructions, refer to Figure A-1 on page A-1 in Appendix A, Menu Maps.

  • Page 28: Entering System Data For A Channel/Path - Chx-Systm

    September 2004 Entering System Data for The CHx-SYSTM submenu is used to enter system parameters for the a Channel/Path - CHx- individual channels/paths. When channels/paths operate separately, SYSTM the AT868 uses the system parameters in this menu. When channels/ paths are averaged together, the AT868 uses parameters selected in the GLOBL-SYSTM submenu.

  • Page 29: Selecting Mass Flow Units

    September 2004 Selecting Mass Flow Units 1. Press [ and [ ] 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. 2.

  • Page 30: Entering Transducer And Pipe Parameters - Chx-Pipe

    September 2004 Entering Transducer and PIPE Enter the transducer and pipe parameters via the submenu. While Pipe Parameters - CHx- following the programming instructions, refer to Figure A-1 on page PIPE A-1 in Appendix A, Menu Maps. Remember to record all programmed data in Appendix C, Data Records.

  • Page 31: Special Transducers

    [ENTER]. 3. Press [ and [ ] to select the wedge type (supplied by GE Infrastructure Sensing) and press [ENTER]. 4. Press [ and [ ] to select the transducer frequency (supplied by GE Infrastructure Sensing) and press [ENTER].

  • Page 32: Pipe Material

    September 2004 Pipe Material If a standard clamp-on transducer is being used, the programming sequence should be rejoined here. 1. Press [ and [ ] 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.

  • Page 33: Pipe Outside Diameter

    September 2004 Pipe Outside Diameter The programming sequence should be rejoined here for all transducers. 1. Press [ ] to move the cursor to the outside diameter units and to select the desired units and press [ENTER]. press 2. Enter the known pipe outside diameter or circumferences by using the arrow keys.

  • Page 34: Lining

    September 2004 Lining 1. Press [ and [ ] to select whether the pipe has a lining and press [ENTER]. 2. Do one of the following: If you selected No, proceed to Setting Up the Tracking Window • below and Fluid Type on page 2-10. If you selected Yes, proceed to the next step.

  • Page 35: Fluid Type

    September 2004 Fluid Type 1. The selections for fluid type vary depending on whether the Tracking Window is enabled or disabled. Press [ and [ ] 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 Windows = WATER...

  • Page 36: Kv Input Selection

    September 2004 KV Input Selection 1. Press [ and [ ] to enter a static kinematic viscosity or a table of values and press [ENTER]. 2. Do one of the following: If you selected Table, enter the Calibration Factor by using the •...

  • Page 37: Number Of Traverses And Transducer Spacing

    September 2004 Number of Traverses and 1. Press [ and [ ] to select the number of traverses and press Transducer Spacing [ENTER]. 2. Enter the value for the transducer spacing by using the arrow keys. Press [ and [ ] to move the cursor to desired location and [ ] and [ ] press to increase or decrease the number and press...

  • Page 38: Entering Setup Data - Chx-Setup

    September 2004 Entering Setup Data - The signal limits and response times for the Model AT868 are CHx-SETUP SETUP specified via the submenu. The following submenus are included in this section: • SIGNL - set the parameters related to the transducer signal •...
  • Page 39 September 2004 Set Transducer Signal Settings - SIGNL (cont.) Table 2-3: Transducer Signal Settings Transducer Signal Default Parameters Range Value Miscellaneous Information The E1:LOW SIGNAL error message appears when the Signal Low signal strength falls below the programmed SIGNAL -20 to 100 Limit LOW LIMIT value.
  • Page 40 September 2004 Table 2-3: Transducer Signal Settings Transducer Signal Default Parameters Range Value Miscellaneous Information –1000 to An offset between the upstream and downstream transit Delta T Offset 0 msec 1000 msec times is specified at this prompt. The percentage of peak used to calculate the transit times and Delta T is specified at this prompt.

  • Page 41: Setting Response Time - Avrg

    September 2004 Setting Response Time - Use this option to specify the number of readings that occur before AVRG the meter will respond to a step change in flow rate. In general, the smaller the number of readings, the less steady the display will appear.

  • Page 42: Initializing Setup Parameters - Init

    September 2004 Initializing Setup Use this option to initialize (reset) all of the parameters within the Parameters - INIT menu back to their default values. Complete the following steps to reset all of the parameters: 1. Press [ESC], [ENTER], [ESC]. The meter enters the user program. 2.
  • Page 43 September 2004 Entering KV/SS Table - KV/ Use this option to calculate the kinematic viscosity (KV) based on signal strength (SS). Complete the following steps to enter KV and SS values: 1. Press [ESC], [ENTER], [ESC]. The meter enters the user program. 2.
  • Page 44 K factors for velocity or reynolds values: Note: The factors are supplied by GE Infrastructure Sensing. Without them the K-factor table cannot be edited. 1. Press [ESC], [ENTER], [ESC]. The meter enters the user program.
  • Page 45 September 2004 Procedure Options After completing the previous steps, the user program returns to the Advanced Feature window. Do one of the following: • To continue regular programming, refer to Appendix A, Menu Maps, to navigate to the desired menu. To leave the user program, press [ESC] five times.
  • Page 46 September 2004 Selecting Transmitter Code Use this option to select the size of the transducer transmission signal. Length - CODEL This option is helpful when measuring flow on small pipes. Complete the following steps to select the code length. 1. Press [ESC], [ENTER], [ESC]. The meter enters the user program. 2.

  • Page 47: Entering Global System Data - Globl-Systm

    September 2004 Entering Global System While completing these instructions, refer to Figure A-2 in Data - GLOBL-SYSTM Appendix A, Menu Maps. Remember to record all programmed data in Appendix C, Data Records. Use the steps below to enter system information in the GLOBL menu. Selecting the GLOBL- 1.

  • Page 48: Setting Up The External Totalizer Reset Switch

    To connect an external reset switch, refer to Wiring the External Totalizer Reset Switch on page 1-12. IMPORTANT: The hardware for the switch is user-supplied. GE Infrastructure Sensing supplies only the software to configure the switch and test points to connect the switch.

  • Page 49: Selecting Mass Flow Units

    September 2004 Selecting Mass Flow Units 1. Press [ and [ ] 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.

  • Page 50: Setting Up The Inputs And Outputs - Globl-I/O

    September 2004 Setting Up the Inputs and Input/O Set up the AT868’s inputs and outputs via the utput submenu. Outputs - GLOBL-I/O While following the programming instructions, refer to Figure A-2 in Appendix A, Menu Maps. Remember to record all programmed data in Appendix C, Data Records.
  • Page 51 September 2004 Selecting Error Handling - Table 2-4: Error Options and Responses for a 1-Channel Meter ERROR (cont.) Option Output Response Totalizer Response Holds last “good” reading HOLD Holds last “good” reading. and continues to totalize, based on that reading. NO UP Stops totalizing.
  • Page 52 September 2004 Selecting Error Handling - 9. Press [ ] to activate or deactivate two-path error handling and press [ENTER]. The ERROR (cont.) 2PATH ERROR HAND option is intended for applications where two sets of transducers are installed in the same location in the same pipe to improve accuracy and the meter is operated in mode.

  • Page 53: Setting Up Analog And Totalizer/Frequency Outputs - Optn

    September 2004 Setting Up Analog and The Model AT868 has one built-in analog output and one totalizer/ Totalizer/Frequency frequency output for each channel which must be set up. To Outputs - OPTN accomplish this, refer to one of the following sections: •...
  • Page 54 September 2004 Setting Up the Analog 5. At BASE, enter a flow rate value for the low end of the analog Output Scale (cont.) output range by using the arrow keys. Press [ and [ ] to move [ ] and [ ] the cursor to desired location and press to increase or decrease the number and press [ENTER].
  • Page 55 September 2004 Accessing a Totalizer/ These outputs can be configured for frequency or totalizer output Frequency Output using PanaView™. The totalizer output issues one pulse per selected volume of flow. The meter produces a pulse each time the programmed amount of flow passes through the pipe.
  • Page 56 September 2004 Setting Up a Frequency 1. At Output B or D, select OFF or FREQ and press [ENTER]. Output 2. Do one of the following: If you selected OFF, the meter returns to the Global I/O window. • Go to Procedure Options on page 2-32. •...
  • Page 57 September 2004 Setting Up a Totalizer 1. At Output B or D, select OFF or TTLZR and press [ENTER]. Output 2. Do one of the following: If you selected OFF, the meter returns to the Global I/O window. • Go to Procedure Options on page 2-32. •...

  • Page 58: Configuring The Communications Port - Globl-Comm

    [ ] to move the cursor to desired location and press to increase or decrease the number. The default number is 1. A meter address is only necessary for communication with the GE Infrastructure Sensing Panaview™ software. See the Panaview™ User’s Manual for more information. IMPORTANT: If the meter address or baud rate is changed, communication with Panaview™...

  • Page 59: Configuring The Output As A Totalizer Or Frequency Output

    September 2004 Configuring the Output Output B and/or D can be configured as a totalizer or frequency as a Totalizer or output using Instrument Data Manager software. Before the output Frequency Output can be configured, the AT868 must be connected to a PC using the serial port (see Wiring the Serial Port on page 1-9).
  • Page 60 Chapter 3...
  • Page 61 Displaying Data Introduction........... . 3-1 Adjusting LCD Contrast and Brightness .

  • Page 62: Chapter 3: Displaying Data

    September 2004 Introduction The Model AT868 flow transmitter is equipped with a Liquid Crystal Display (LCD), it may be programmed to display up to four variables in sequence. To ease viewing, both the brightness and the contrast of the LCD may be adjusted. In addition, this section discusses resetting totalizers and pausing the measurement.

  • Page 63: Setting Up The Display

    September 2004 Setting Up the Display Complete the following instructions to display the desired data on the display screen (refer to Figure A-2 on page A-2 in Appendix A, Menu Maps Accessing the Display 1. Press [ESC], [ENTER], [ESC]. The meter enters the user program. Submenu 2.

  • Page 64: Resetting Totals

    September 2004 Resetting Totals To reset the totals, you can use the internal keypad, PanaView™ or an external switch. When resetting totals, the totals for both channels will be reset. Use the appropriate section that follows to reset totalizers. Resetting Totalizers Using Refer to Figure A-4 on page A-4 in Appendix A, Menu Maps.

  • Page 65: Taking Measurements

    September 2004 Taking Measurements PanaView™ offers a unique command that enables you to pause and restart the measurement. When you pause the measurement, the AT868 suspends taking measurements; therefore, all outputs are also affected. This option is only accessible using PanaView™; this option is not available via the meter keypad (refer to Figure F-4 on page F-4 in Appendix F, PanaView™...
  • Page 66 Chapter 4...
  • Page 67 Calibration Introduction........... . 4-1 Calibrating and Testing Analog Outputs.

  • Page 68: Introduction

    September 2004 Introduction Use this menu to calibrate and test the analog and totalizer/frequency outputs. Refer to Figure A-4 on page A-4 in Appendix A, Menu Maps, while following the calibration instructions. Calibrating and Testing The Model AT868 flowmeter includes one built-in analog output per channel with a resolution of 5.0 µA (0.03% full scale).
  • Page 69 September 2004 Accessing the Calibration 1. Press [ESC], [ENTER], [ESC]. The meter enters the user program. Menu 2. Press [ ] until CALIB appears and press [ENTER]. 3. Press [ ] until SLOT0 appears and press [ENTER]. 4. Press [ ] until A or C appears and press [ENTER]. Calibrating the Low End of 1.

  • Page 70: Testing Output Linearity

    September 2004 Testing Output Linearity 1. Press [ESC], [ENTER], [ESC]. The meter enters the user program. 2. Press [ ] until CALIB appears and press [ENTER]. 3. Press [ ] until SLOT0 appears and press [ENTER]. 4. Press [ ] until A or C appears and press [ENTER]. 5.

  • Page 71: Testing Totalizer/Frequency Outputs

    September 2004 Testing Totalizer/ Prepare for the testing procedure by connecting a frequency counter Frequency Outputs to the appropriate terminal blocks. Refer to Figure 1-4 on page 1-16. Note: Analog outputs 1 and 2 in the wiring diagram correspond to analog outputs B and D in the AT868 software.
  • Page 72 Chapter 5...
  • Page 73 Error Codes Introduction........... . 5-1 E0: No Error .

  • Page 74: Chapter 5: Error Codes

    September 2004 Introduction The Model AT868 ultrasonic flowmeter is a reliable, easy to maintain instrument. When properly installed and operated, as described in Chapter 1, Installation, the meter provides accurate flow rate measurements with minimal user intervention. However, if a problem should arise with the electronics enclosure, the transducers or the flowcell, a built-in error code message system greatly simplifies the troubleshooting process.

  • Page 75: E2: Sound Speed Error

    September 2004 E2: Sound Speed Error Problem: The sound speed exceeds the limits programmed in the SETUP-SIGNL submenu of the User Program. Cause: The error may be caused by incorrect programming, poor flow conditions or poor transducer orientation. Action: Compare the measured sound speed to tabulated nominal values for the fluid being used and correct any programming errors (see page 2-13).

  • Page 76: E6: Cycle Skip, Accel

    September 2004 E6: Cycle Skip, Accel. Problem: The acceleration exceeds the limits programmed in the SETUP-SIGNL submenu of the User Program. Cause: This condition is usually caused by poor flow conditions or improper transducer alignment. Action: Refer to Chapter 6, Diagnostics, to correct any flowcell and/or transducer problems.
  • Page 77 Chapter 6...
  • Page 78 Diagnostics Introduction........... . 6-1 Displaying Diagnostic Parameters .

  • Page 79: Chapter 6: Diagnostics

    September 2004 Introduction This chapter explains how to troubleshoot the Model AT868 if problems arise with the electronics enclosure, the flowcell, or the transducers. Indications of a possible problem include: • display of an error message on the LCD screen •...
  • Page 80 September 2004 Displaying Diagnostic Note: The measurement units that appear in these prompts are those selected in the GLOBL-SYSTM menu as described in Chapter 2, Parameters (cont.) Programming Site Data. The previous two prompts repeat until all of the specified # of LCD PARAMS have been set up.
  • Page 81 September 2004 Table 6-1: Available Diagnostic Parameters (Continued) Option Bar Description Good Displays the normalization factor for the NFup 0.85-1.0 <0.85 upstream transducer. Displays the normalization factor for the NFdn 0.85-1.0 <0.85 downstream transducer. Displays the speed of sound in the Cxdcr N.A.

  • Page 82: Using The Tracking Window

    September 2004 Using the Tracking If the fluid sound speed is fairly constant, you can use the Tracking Window Window to “find” the sound speed and then enter it rather than constantly track it since tracking adds to the measurement time. Use the procedure below to determine the fluid sound speed and enter it into the meter.

  • Page 83: Diagnostic Record

    September 2004 Deactivating the Tracking 1. Press [ESC], [ENTER], [ESC]. The meter enters the user program. Window 2. Press [ ] until PROG appears and press [ENTER]. 3. Press [ ] until CH1 or CH2 appears and press [ENTER]. 4. Press [ ] until PIPE appears and press [ENTER]. 5.

  • Page 84: Flowcell Problems

    September 2004 Flowcell Problems If preliminary troubleshooting with the Error Code Messages and/or the Diagnostic Parameters indicates a possible flowcell problem, proceed with this section. Flowcell problems fall into two categories: • fluid problems • pipe problems. Read the following sections carefully to determine if the problem is indeed related to the flowcell.

  • Page 85: Pipe Problems

    The accuracy of the flow rate measurements is no better than the accuracy of the programmed pipe dimensions. For a flowcell supplied by GE Infrastructure Sensing, the correct data will be included in the documentation. For other flowcells, measure the pipe wall thickness and diameter with the same accuracy desired in the flow rate readings.

  • Page 86: Transducer Problems

    September 2004 Transducer Problems Ultrasonic transducers are rugged, reliable devices. However, they are subject to physical damage from mishandling and chemical attack. Clamp-on transducers are also subject to installation variables such as physical misalignment and faulty coupling to the pipe on which they are mounted.

  • Page 87: Clamp-On Transducer Problems

    September 2004 Clamp-on Transducer 1. POOR COUPLING TO PIPE: Clamp-on transducers must be in Problems close contact with the pipe. Make sure the pipe wall is smooth and generally free of paint. The couplant material must fill voids between the transducer and the pipe, and must be firmly coupled or bonded to both the pipe and the transducer.
  • Page 88 Chapter 7...
  • Page 89 Parts Replacement Introduction........... . 7-1 Replacing the LCD Display/Keypad .

  • Page 90: Introduction

    September 2004 Introduction The Model AT868 has been designed to permit easy on-site upgrades and parts replacement. The instructions in this chapter, along with a few common tools, are all that is required to perform the following tasks: • replacing the LCD display/keypad •...

  • Page 91: Replacing The Lcd Display/Keypad

    September 2004 Replacing the LCD The LCD display/keypad assembly normally provides years of Display/Keypad dependable service, but it is easily field-replaceable when necessary. To replace the LCD display/keypad, see Figure 7-1 on page 7-7 and Figure 7-2 on page 7-8 for the component locations, and complete the following steps.

  • Page 92: Replacing The Fuse

    September 2004 Replacing the Fuse Use the steps below to replace the AT868 fuse (refer to Figure 7-1 on page 7-7): 1. Disconnect the power to the AT868 and move the electronics enclosure to a flat service. !WARNING! The main power to the Model AT868 must be disconnected before proceeding.

  • Page 93: Replacing The User Program

    September 2004 Replacing the User The Model AT868’s User Program is stored on an erasable Program programmable read-only memory (EPROM) chip. The EPROM, which is designated as component U4, is mounted in a socket on the rear of the Channel 1 board. EPROM replacement may be required to replace a defective chip or to upgrade to a newer software version.
  • Page 94 September 2004 Locating the EPROM 1. Flip the board over and locate the U4 EPROM socket. It is the only socketed chip on this board and it has a white identification label. 2. Using a chip puller, remove the EPROM from its socket. If a chip puller is unavailable, a straightened paper clip may be used in the notches at the upper right and lower left corners of the socket.
  • Page 95 September 2004 Reassembling the Unit !WARNING! (cont.) Before powering up the AT868, make sure all the flat and lock washers have been reinstalled. Washers or other metal components left inside the enclosure may cause electrical problems. Note: Be sure to enter a complete and detailed account of any parts replacement performed on the Model AT868 in Appendix E, Service Record.
  • Page 96 September 2004 Parts Replacement...
  • Page 97 September 2004 Parts Replacement...
  • Page 98 Chapter 8...
  • Page 99 Specifications General Specifications......... . . 8-1 Electrical Specifications .

  • Page 100: Chapter 8: Specifications

    September 2004 General Specifications The general specifications for the Model AT868 flow transmitter are divided into the following categories: Hardware Configuration Channel Options Standard: 1-Channel. Optional: 2-Channel/Path (2 paths per pipe). Package Options: General purpose NEMA 4X powder-coated aluminum wall mount. Dimensions: 2.2 lb (1 kg);...

  • Page 101: Electrical Specifications

    September 2004 Electrical Specifications The electrical specifications for the Model AT868 flow transmitter are divided into the following categories: Power Supply Options: Standard: 85 to 265 VAC, 47-65 Hz, ± 10%. Optional: 12 to 28 VDC; ± 5%. Power Consumption: 10 W maximum (not including inrush current required for DC supply specification).
  • Page 102 September 2004 Input/Output Output Units: Specifications (cont.) Velocity: Feet per second (ft/s). Meters per second (m/s). Volumetric Flow: Cubic feet (ft ) per second, minute, hour. Million cubic feet (ft ) per day. Gallons (gal) per second, minute, hour. Millions of gallons per day. Barrels per second, minute, hour Millions of barrels per day.

  • Page 103: Transducer Specifications

    Optional: Explosion-proof, Div. 1, Class 1, Group C&D, INIEX-Certified EEx d IIC T6 or weatherproof (NEMA 4, IP65). Other Options: Transducers for special applications; fixtures; no organic bonds or insulators; cooling jackets for high temperatures. Please consult GE Infrastructure Sensing for details. Specifications...

  • Page 104: Pipe Size And Materials

    INIEX-certified EEx d IIC T6 or weatherproof (NEMA 4, IP65). Other Options: Transducers for special applications; fixtures; no organic bonds or insulators; cooling jackets for high temperatures. Please consult GE Infrastructure Sensing for details. Pipe Size and Materials Wetted Transducers Materials: All metals and most plastics.

  • Page 105: Tilted Diameter Spoolpiece

    September 2004 Tilted Diameter Pipe Sizes: Spoolpiece Standard: 2 to 200 in. (50 mm to 5 m), 100% interrogation. Optional: > 200 in. Materials: Standard: SS, carbon steel, plastic or fiberglass. Optional: Other metals, plastics, etc. Process Connections: Standard: Straight (welding), 150-lb flanged, 300-lb flanged and higher.
  • Page 106 Appendix A...
  • Page 107 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 .

  • Page 108: Appendix A: Menu Maps

    September 2004 Menu Maps...
  • Page 109 September 2004 Menu Maps...
  • Page 110 September 2004 Menu Maps...
  • Page 111 September 2004 Menu Maps...
  • Page 112 Appendix B...

  • Page 113: Appendix B: Ce Mark Compliance

    CE Mark Compliance Introduction........... . B-1 EMC Compliance.

  • Page 114: Introduction

    September 2004 Introduction For CE Mark compliance, the Model AT868 flow transmitter must meet both the EMC and LVD directives. IMPORTANT: CE Mark compliance is required only for units intended for use in EEC countries. EMC Compliance For EMC compliance, the electrical connections must be shielded and grounded as in Table B-1 below.

  • Page 115: Lvd Compliance

    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 Model AT868.
  • Page 116 Appendix C...

  • Page 117: Appendix C: Data Records

    Data Records Site Data............C-1...

  • Page 118: Site Data

    September 2004 Site Data After the Model AT868 flow transmitter has been installed, specific site data must be entered via the User Program, prior to operation. Record that information in Table C-1 below. Table C-1: Site Data General Information Model # Serial # Software Vers.
  • Page 119 September 2004 Table C-1: Site Data (cont.) Channelx-Pipe Parameters Channel 1 Channel 2 (if applicable) Trans. Type SPEC Trans. Type SPEC Transducer # Transducer # Special Transducers Special Transducers Wedge Type Rayl Shear Wettd Wedge Type Rayl Shear Wettd Frequency Hz Frequency Hz Trans.
  • Page 120 September 2004 Table C-1: Site Data (cont.) Channelx-SETUP-Signal Channel 1 Channel 2 (if applicable) Signal Low Lim. Signal Low Lim. Corr. Peak Lim. Corr. Peak Lim. SS +/- Limit SS +/- Limit Vel. Low Limit Vel. Low Limit Vel. High Limit Vel.
  • Page 121 September 2004 Table C-1: Site Data (cont.) Channelx-SETUP-Advanced Features-Enter KV/SS Table (cont.) KV/SS Pairs KV/SS Pairs Sig. Stren. Kin. Visc. Sig. Stren. Kin. Visc. Channelx-SETUP-Advanced Features-Multiple K Factors Custom Type CstV CstR Custom Type CstV CstR K-Factor Table K-Factor Table K-Factor # Vel./Reyn.
  • Page 122 Appendix D...

  • Page 123: Appendix D: Measuring P And L Dimensions

    Measuring P and L Dimensions Measuring P and L ..........D-1...
  • Page 124 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 flow stream.

  • Page 125: Measuring P And L

    September 2004 Measuring P and L (cont.) Use Figure D-2 below to properly measure the coupling length. Typically, the transducer face is positioned just outside the inside diameter (ID) of the pipe, or slightly retracted inside the coupling. Figure D-2: Determining the Pipe Coupling Length Use the following formula to determine the P dimension: [ID + 2(WT)]/(cos MA) + 2(CL) - FD) = P Dimension.
  • Page 126 Appendix E...

  • Page 127: Appendix E: Service Record

    Service Record Introduction........... . E-1 Data Entry .

  • Page 128: Introduction

    September 2004 Introduction Whenever any service procedure is performed on the Model AT868 flow transmitter, the details of the service should be recorded in this appendix. An accurate service history of the meter can prove very helpful in troubleshooting any future problems. Data Entry Record complete and detailed service data for the Model AT868 in Table E-1 below.
  • Page 129 September 2004 Table E-1: Service Record (cont.) Date Description of Service Performed By Service Record...

  • Page 130: Diagnostic Parameters

    September 2004 Diagnostic Parameters After a successful initial installation of the Model AT868 and whenever any system malfunction is noticed, the values for the diagnostic parameters should be entered in Table E-2 below. Table E-2: Diagnostic Parameters Parameter Initial Current Parameter Initial Current...
  • Page 131 Appendix F...
  • Page 132 PanaView™ for IDM-Compatible Meters (916-086B) Introduction ......... . .F-1 IDM-Compatible Flowmeters .

  • Page 133: Appendix F: Panaview™ For Idm-Compatible Meters (916-086B)

    GE Infrastructure Sensing instruments. This document focuses on particular applications suitable for flowmeters that use the GE Infrastructure Sensing PanaView™ protocol. For general PanaView™ applications such as creating graph and log files, displaying live measurement data, and creating custom templates, please refer to the general PanaView™...

  • Page 134: Idm-Compatible Flowmeters

    September 2004 IDM-Compatible To determine if your flowmeter uses the IDM protocol, please check Flowmeters the list of compatible flowmeters below. If your meter is not on this list, please consult the factory for appropriate instrument interface software: • • •...

  • Page 135: Setting Up The Communications Port

    September 2004 Setting Up the Use the steps below to establish communications with an IDM- Communications Port compatible flowmeter. 1. Open the “New Meter Browser” window and expand the network tree. Then, highlight the My Computer(Name) branch by clicking on it. 2.
  • Page 136 September 2004 Setting Up the 4. Click on the “Communications Port” option to select it. The Setup Communications Port Communications screen appears similar to Figure F-3 below. (cont.) Figure F-3: Setup Communications Screen 5. Open the Protocol menu (the first of the drop-down menus) and click on IDM.

  • Page 137: Adding An Idm-Compatible Meter

    September 2004 Adding an IDM- To add a meter on the IDM-configured communications port, Compatible Meter complete the following steps: 1. Highlight the communication port to which the meter will be added by clicking on it, and then open the “Edit” menu on the menu bar (if the communication port is not highlighted first, the “New Meter”...
  • Page 138 September 2004 Adding an IDM- IMPORTANT: The Network ID number must match the Network ID Compatible Meter (cont.) programmed in the meter’s Communications menu. If the initialization is successful, the Meter Browser shows a listing similar to Figure F-6 below. Figure F-6: The Updated Network Tree However, if the settings do not match, or there is some other difficulty, a screen appears similar to Figure F-7 below.

  • Page 139: Editing Meter Properties

    September 2004 Editing Meter Properties Through PanaView™, you can edit the properties of your IDM- compatible flowmeter. You can: • Set the meter clock, or synchronize it with the PC clock • Read, plot and save transducer signals • Clear totalizers •...
  • Page 140 September 2004 Editing Meter Properties The window appears similar to Figure F-9 below. To perform a (cont.) specific task, refer to the appropriate section on the following pages. • Setting the Meter Clock (page F-9) • Reading Transducer Signals (page F-10) •...

  • Page 141: Setting The Meter Clock

    September 2004 Setting the Meter Clock The meter’s Time may be reset in three different ways: • manually enter the time and date in the text box, or • [Sync to PC] click on the option button to have PanaView™ set the time and date to the current PC setting, or •...

  • Page 142: Reading Transducer Signals

    September 2004 Reading Transducer To read a Signal from the meter: Signals 1. Click on the Read Signals button. (If the meter is a multi-channel instrument, open the Channel drop-down menu and click on the desired channel.) After a moment, the Properties window appears similar to Figure F-11 below.

  • Page 143: Plotting Transducer Signals

    September 2004 Plotting Transducer To plot the selected signal, click on Plot. A graphical window opens, Signals as shown in Figure F-12 below. Figure F-12: Signal Graph Window Saving Transducer Signals To save the raw signal, click Save. A window opens similar to Figure F-13 below.

  • Page 144: Handling Site Files

    September 2004 Handling Site Files To access site files, click on the Site Files button in the Properties window. The Site File Operations window (shown in Figure F-14 below) opens. Figure F-14: The Site File Operations Window Saving an Existing Site to To save an existing site to the meter: the Meter 1.
  • Page 145 September 2004 Saving a New Site to the To save a new site to the meter: Meter 1. Select the radio button for New and click on the Save Site to Meter button. 2. A window opens similar to Figure F-16 below. Enter the desired name, and click [OK].
  • Page 146 September 2004 Clearing a Site from the To clear a site from the meter: Meter 1. Highlight the site in the left pane. (See Figure F-14 on page F-12.) 2. Click Clear Site From Meter. 3. The program asks for confirmation. Click [OK]. The meter deletes the designated file.

  • Page 147: Changing Meter Settings

    September 2004 Changing Meter Settings Through PanaView™, users of IDM-compatible meters can handle remote programming of the meter. They can: • Program and change a meter’s operating parameters; • Set up, start, and stop logs; • Calibrate and test inputs and outputs; •...
  • Page 148 September 2004 Changing Meter Settings 4. From the meter tree, expand the Edit Functions option. The (cont.) window now appears similar to Figure F-19 below, with a list of available menus. The menus listed are those available on the meter. (For illustration purposes, the specific menus shown are those for a one-channel GN868 flowmeter.) Figure F-19: Meter Tree with Edit Functions Option 5.
  • Page 149 September 2004 Changing Meter Settings 6. To enter a particular option: (cont.) a. Highlight and double-click on the desired option in the left pane. Figure F-21 below shows the first entry (Transducer Number) in the Pipe parameters option. The title above the center pane lists the current entry, while the center pane displays the available selections for that entry.
  • Page 150 September 2004 Changing Meter Settings (cont.) Figure F-22: Site Edit Menu with Current Settings 7. When you have completed entering parameters in a given option, [Exit Page] click to close the option. You can then double-click on [Close] another option, or click to close the window.
  • Page 151 September 2004 Index ACTIV ......2-2 Data Record ......C-1 ADVAN .
  • Page 152 September 2004 Index (cont.) Edit Flowcell Installation ....1-3 Functions Option ....F-16 Flowcell Problems Menu .
  • Page 153 September 2004 Index (cont.) L Dimension, Measuring ....D-1 OPTN ......2-28 LCD (see Liquid Crystal Display) Outputs Leaks, Transducers.
  • Page 154 September 2004 Index (cont.) Serial Port Totalizer Configuring......2-33 Clearing ......F-11 Connecting RS232 .
  • Page 155 September 2004 Index (cont.) Units Mass Flow ....2-4, 2-24 Totalizer ......2-3 Volumetric .
  • Page 156 GE Infrastructure DECLARATION Sensing CONFORMITY Panametrics Limited Shannon Industrial Estate Shannon, County Clare Ireland declare under our sole responsibility that the AT868 AquaTrans™ Ultrasonic Flowmeter UPT868-P UltraPure Flow™ Measurement System to which this declaration relates, are in conformity with the following standards: •...
  • Page 157 GE Infrastructure DECLARATION Sensing CONFORMITE Panametrics Limited Nous, Shannon Industrial Estate Shannon, County Clare Ireland déclarons sous notre propre responsabilité que les AT868 AquaTrans™ Ultrasonic Flowmeter UPT868-P UltraPure Flow™ Measurement System rélatif á cette déclaration, sont en conformité avec les documents suivants: •...
  • Page 158 GE Infrastructure KONFORMITÄTS- Sensing ERKLÄRUNG Panametrics Limited Wir, Shannon Industrial Estate Shannon, County Clare Ireland erklären, in alleiniger Verantwortung, daß die Produkte AT868 AquaTrans™ Ultrasonic Flowmeter UPT868-P UltraPure Flow™ Measurement System folgende Normen erfüllen: • EN 61326:1998, Class A, Annex A, Continuous Unmonitored Operation •...

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