Neptune Technology Group NTGCNWP1101 Meter Interface Unit User Manual R31505

Neptune Technology Group Inc. Meter Interface Unit R31505

Contents

Pit MIU Manual

CellNet Pit MIU Master Rev. 1.004/14/99 3:13 PM1SECTION 1INTRODUCTIONABOUT THIS MANUALThis instruction manual explains the installation, operation, and maintenance of the SchlumbergerCellNet-Ready Pit MIU (ProRead Only) (MIU1). Schlumberger urges you to read the entiremanual before attempting installation, tests, operations, or maintenance.Section 1 Introduction -This section describes the organization of this manual, providesa product description, operations overview, and product specifications.Section 2 Installation -This section describes storage and unpacking instructions, preliminary tests,tools and materials, site selection, and installation.Section 3 Operating Instructions -This section describes controls and indicators, application ofpower, power ON/OFF procedures, operating procedures, and any special procedures.Section 4 Theory Of Operation -This section explains how the product works.Section 5 Testing And Maintenance -This section explains how to test, troubleshoot, and maintainthe product.Section 6 Replacement Parts, Schematics, And Drawings -This section provides part numbers forreplacement parts, and any applicable schematic and block diagrams.Section G GlossaryIndexFCC REGULATORY NOTICE
CellNet Pit MIU Master Rev. 1.004/14/99 3:13 PM2PRODUCT DESCRIPTIONThe CellNet Ready Pit MIU (ProRead Only version) provides an interface between theSchlumberger ProRead encoder register and the CellNet fixed network RF system. The MIU readsthe meter on a hourly basis and transmits this reading every 15 minutes to the CellNet network.The MIU operates in a one-way mode using the unlicensed 902 to 928 MHz bandwidth to theCellNet MicroCell Controller (MCC).The pit version of the product has two primary components. The first is the MIU Housingcontaining the electronics and battery. The MIU Housing is designed to be installed in highhumidity or flooded areas such as those located inside a meter pit or vault. The electronics in thehousing are attached by a coaxial cable to an antenna assembly. The antenna assembly is designedto mount in the meter pit lid through a 1-3/4” hole that is drilled in the lid. The upper part of theantenna is about 4” in diameter and slightly domed. The antenna assembly is designed to withstandextremes in weather and traffic that it will be exposed to.The MIU meets FCC regulations part 15.247, allowing higher output power and greater range. Theunit also meets CellNet’s “Over The Air RF Specification” which outlines the applicableperformance standards required to work within the CellNet network. The MIU uses directsequence spread-spectrum technology to avoid RF interference and enhance security.A few key features of the MIU are:• Increases meter reader safety.• Requires no field programming.• Improves reading efficiencyCompatible with Schlumberger ProRead equipped metersFigure 1.1 Pit MIU
CellNet Pit MIU Master Rev. 1.004/14/99 3:13 PM3OPERATIONS OVERVIEWThe CellNet-Ready Pit MIU (ProRead Only) collects meter readings from the encoder register onan hourly basis and transmits the information every fifteen minutes. This redundant transmissionof the same data four times an hour increases the reliability of the data to be received by the fixednetwork MCC.1-4SPECIFICATIONSElectrical SpecificationsTransmitter SpecificationsEnvironmental ConditionsEncoder Register InterfaceTable 1.2 Electrical SpecificationsBattery 3.6V D size LithiumTransmit Period Every 15 minRegister Read Period Once an hourTable 1.3 Transmitter SpecificationsSpread Spectrum Direct SequenceCarrier Frequency 902-928 MHzFCC Verification Part 15.247Table 1.4 Environmental ConditionsOperating Temperature -22° to 149°F (-30° to 65°C)Storage Temperature -40° to 185°F (-40° to 85°C)Operating Humidity 0 to 95% CondensingTable 1.5 Encoder Register InterfaceEncoder Register Maximum Cable LengthSchlumberger PRO-READ* 500 feet (152 meters)* Meets manufacturers’ published specification for wire length between encoder and remote receptacle.Dimensions and WeightTable 1.6 Dimensions and WeightDimensions Refer to following figuresWeight approximately 2.2 LB (1044 grams)
CellNet Pit MIU Master Rev. 1.004/14/99 3:13 PM4SECTION 2INSTALLATIONThis section describes unpacking and storage instructions, preliminary tests, tools and materials,site selection, and installation.UNPACKINGAs with all precision electronic instruments, the CellNet-Ready Pit MIU (ProRead Only) should behandled with care; however, special handling is unnecessary. Inspect shipping containers fordamage upon receipt and inspect contents of any damaged cartons prior to storage. Afterunpacking the MIU, inspect it for damage. If the MIU appears to be damaged, or proves to bedefective upon installation, notify your Schlumberger Sales Representative. If the MIU requiresreshipment, use the original cardboard box and packing material.STORAGEStore the cartons in a clean, dry environment. The temperature should remain between -40° and185°F (-40° and 85°C). Keep in mind that the CellNet-Ready Pit MIU (ProRead Only) has aninternal battery. Storage for more than one year, of the CellNet-Ready Pit MIU (ProRead Only),may affect product battery life. Be sure to use a first-in first-out inventory control system.PRELIMINARY TESTSThe CellNet-Ready Pit MIU (ProRead Only) does not require any testing or programming prior toinstallation.TOOLS AND MATERIALSTables 2.1 and 2.2 show the recommended tools and materials you may need to successfully installthe CellNet-Ready Pit MIU (ProRead Only) or to replace the MIU’s internal battery. Note thatsome items may not apply to your specific installation or the list may not contain all the requiredtools and/or materials.Table 2.1 Recommended ToolsItem Description/Recommended UseTool kit contains standard tools including:• Assorted screwdrivers• Needle-nose pliers
CellNet Pit MIU Master Rev. 1.004/14/99 3:13 PM5• Wire strippers• Scotchlok crimping tool or Channel Locks• Diagonal Cutters• Electrician’s knife• Hammer• Various installation procedures• Magnet with 6 lbs. force for activating the MIUTable 2.2 Recommended MaterialsItem Description/Recommendation Use• Cable - Solid 3 conductor, #22 AWG (black/green/red) / Connecting MIU to encoder register• Moisture protection compound Dow Corning #4 or GE Novaguard G624 ® / Covering exposed wires andTerminal Screws on register and MIU• Scotchloks ® / Splicing three-conductor cables and replacement battery wires• Site Work Order Documentation provided by your utility / Receiving and recording information about the worksiteINSTALLATIONSafety and Preliminary ChecksObserve the following safety and preliminary checks before and during each installation:• Verify that you are at the location specified on the Site Work Order.• Verify that the site is safe for you and your equipment.• Notify the customer of your presence and tell the customer that you might need access to the water meter.• If the Site Work Order does not have an MIU ID (LAN ID) number on it, write in the ID numberof the MIU you are about to install. If the Site Work Order already has a MIU ID number on it,verify that it matches the LAN ID number on the MIU you are about to install.Note: Always follow your company’s safety practices and installation guidelines when installingan MIU.• Never perform an installation during a lightning storm or under excessively wet conditions.• Use only approved climbing equipment.Site SelectionThe CellNet-Ready Pit MIU (ProRead Only) should be installed and operated in an environmentwhere the temperature stays between -22° and 149°F (-30° and 65°C). Installation and operation inmoderate temperatures increases reliability and product life.
CellNet Pit MIU Master Rev. 1.004/14/99 3:13 PM6Follow these guidelines when selecting a location to install the CellNet-Ready Pit MIU (ProReadOnly):• For best results, Schlumberger recommends mounting the MIU in a location that provides adirect line-of-sight to the MCC.• The selected location should be clear of all obstructions.• Avoid installing the MIU behind metal fences or walls.• RF line-of-sight must be verified to a nearby MCC for improved signal strength.Table 2.3 Maximum Cable LengthsEncoder Register Maximum Cable LengthSchlumberger PRO-READ ® * 500 feet (152 meters)* Meets manufacturers’ published specification for wire length between encoder and remote receptacles.Verifying/Preparing the Encoder RegisterThe CellNet-Ready Pit MIU (ProRead Only) is designed for use with Schlumberger ProReadEncoder Rev. C, D and E.Before installing an MIU, the encoder register must be correctly wired and/or programmed to workwith the MIU.Note: The Pro-Read ® encoder must be programmed for three-wire mode using a Pro-Read ®Programmer and it’s ten-digit TDI format. Do this through the Pro-Read ® receptacle beforeremoving the receptacle. For more information about Pro-Read ® programmers, contact yourSchlumberger sales representative.A three-conductor wire is required to connect the MIU to the encoder. Refer to Steps 1 - 9 in thisprocedure for that information.If a three-conductor cable already connects a Pro-Read ® encoder register to a Pit-mountedreceptacle, verify the Pro-Read ® is programmed for three-wire mode.If a three-conductor cable already connects a Pro-Read ® encoder register to a Pit-mountedreceptacle, the cable may have to be extended to a location that is appropriate for mounting theMIU. Refer to the section “Splicing a Three-Conductor Cable.”Connecting the MIU to the ProRead ® encoder:1. Remove the terminal screw cover from the encoder register.2. Strip off 3/4" from the jacket of the three-conductor cable.3. Strip off 1/2" of insulation from each of the three wires.4. Connect one wire to each terminal screw as described in Table 2.4 and shown in Figure 2.4.
CellNet Pit MIU Master Rev. 1.004/14/99 3:13 PM7Table 2.4 Encoder Register InterfaceEncoder Register Wire Color / Encoder TerminalSchlumberger Pro-Read ® Black / B Green / G Red / R
CellNet Pit MIU Master Rev. 1.004/14/99 3:13 PM85. Thread the cable around the strain relief posts (Figure 2.5).Figure 2.5 Cable Threaded Around Strain Relief Posts6. Use a generous amount of moisture protection compound (Dow Corning #4 ®or GE Novaguard G624 ® ) to completely cover the terminal screws and exposed wire (Figure 2.6).Figure 2.6 Installing Moisture Protection Compound
CellNet Pit MIU Master Rev. 1.004/14/99 3:13 PM97. Align the cable with the notch in the terminal screw cover and snap the coveronto the encoder register (Figure 2.7).Figure 2.7 Covering the Terminal Screws8. Run the cable from the MIU installation point to the encoder register, fastening it securely asnecessary.
CellNet Pit MIU Master Rev. 1.004/14/99 3:13 PM10Installing the MIUPlease read and comply with all of the information in “Verifying/Preparing the Encoder Register”before continuing with this section, “Installing the MIU.” Always be sure to comply with OSHASafety Standards for confined space entry.CellNet-Ready Pit MIU (ProRead Only) Installation1. Unscrew the small tube with attached cable from the antenna assembly.2. Remove the plastic nut from the antenna assembly.3. Insert the antenna assembly in the 1 ¾” hole in the meter pit lid.4. Secure the antenna assembly to the pit lid by tightening the plastic nut from the underside ofthe lid.5. Make sure the o-ring is in place in the groove on the top of the small tube with attached cable.6. Thread the small tube with attached cable into the antenna assembly until tube bottoms out inthe antenna assembly.Testing the InstallationRefer to Section 5, “Testing And Maintenance.”Completing the InstallationAfter verifying that the MIU is working correctly, follow these steps to complete the installation:1. Install the Hi-Lo fastener that holds the Main Housing to the Mounting Adapter.2. Use a generous amount of moisture protection compound (Dow Corning #4 orGE Novaguard G624) to completely cover the Terminal Screws and exposed wires.3. Slide the Terminal Cover onto the Main Housing. Make sure the Terminal Cover is seatedproperly and the cable is fitted into the notch at the top of the Terminal Cover.4. Install the Seal Pin into the Terminal Screw Cover.5. Install a seal wire or seal clip through the Seal Holes at the bottom of the Main Housing.(optional)6. Verify that the requirements of the Site Work Order have been met and that you have recordedall required information.7. Clean up the installation site before leaving.
CellNet Pit MIU Master Rev. 1.004/14/99 3:13 PM11Splicing A Three-Conductor CableSplicing three-conductor cables together should be avoided whenever possible. However, if anexisting Pro-Read ® Pit receptacle is not in an appropriate location for replacement by an MIU, itmay be necessary to splice the cable and extend it to an appropriate location.Follow these steps to splice a three-conductor cable:1. Remove the receptacle from the Pit.2. Remove the wires from the receptacle.3. Cut away the exposed copper from each wire.4. On the three-conductor cable to be spliced, strip off at least 1" of the outer jacket. Do not stripthe insulation from the individual wires.5. Match up one pair of colored wires (Black to Black, Green to Green, and Red to Red) and insertthe matching-colored pair into a Scotchlok (Figure 2.13).Note: The Pro-Read® encoder must be programmed for three-wire mode using a Pro-Read ®programmer and its ten-digit TDI format. Do this through the Pro-Read ® receptacle beforeremoving the receptacle.6. Using a Scotchlok crimping tool or a pair of Channel locks, squeeze the “button” on theScotchlok until it is completely flat (Figure 2.14).
CellNet Pit MIU Master Rev. 1.004/14/99 3:13 PM127. Inspect the Scotchlok to verify that both wires are fully inserted. If they are not, redo the splice(Figure 2.15).8. Repeat Steps 5 through 7 for each pair of wires.9. Tuck the Scotchloks into a splice enclosure and route the cables through the cutouts at the endsof the splice enclosure (Figure 2.16).
CellNet Pit MIU Master Rev. 1.004/14/99 3:13 PM1310. Coat the inside of the splice enclosure with Dow Corning #4 ® or GE Novaguard G624 ®moisture protection compound (Figure 2.17).11. Close the splice enclosure, pressing it firmly until the teeth lock together(Figure 2.18).
CellNet Pit MIU Master Rev. 1.004/14/99 3:13 PM14REPLACING THE BATTERYFollow these steps to change-out a Pit MIU’s internal Battery:1. Unscrew the Hi-Lo fastener holding the Main Housing to the Mounting Adapter.2. Remove the seal wire or seal clip from the Seal Holes at the bottom of the Main Housing.3. Punch the Seal Pin out of the Terminal Screw Cover.4. Remove the Terminal Screw Cover.5. Remove the wires from the Terminal Screws. (optional)6. Using a flat-head screwdriver, gently pry open the clip on the bottom of the Main Housing.When the clip clears the tab on the Mounting Adapter, pull the Main Housing away from theMounting Adapter.7. Remove the Main Housing by lifting and unhinging it from the Mounting Adapter.8. Remove the Battery from the Main Housing by pressing in on the right end of the Battery until itreleases and comes free from the Main Housing.9. As close to the Battery as possible, cut the battery connection wires one at a time.Note: Cutting the battery connection wires one at a time prevents shorting.10.Use Skotchloks to splice the wires from the new Battery to the wires that connected to the oldBattery.Note: Insure the Pit MIU’s black wire is connected to ground (-) and the red wire is connected tothe positive (+) wires of the new battery.
CellNet Pit MIU Master Rev. 1.004/14/99 3:13 PM1511. Snap the Battery into the Receiving Clips on the Main Housing.12. Install the Main Housing on the Mounting Adapter.14. Install the appropriate color wires to each Terminal Screw (Black to B, Green to G, Red to R).15. Follow the steps in “Testing the Installation.”SECTION 3OPERATING INSTRUCTIONSAt the time of installation, the installer uses the CellNet installation tool to verify that the CellNet-Ready Pit MIU (ProRead Only) is operating properly. Following the installation, the CellNet-Ready Pit MIU (ProRead Only) operates automatically and continuously without any type ofhuman intervention.SECTION 4THEORY OF OPERATIONCellNet ® MIU ProgrammingThe MIU is not field programmable. At the factory, each of the following items are programmedinto the MIU:LAN Address - Each MIU is given a unique, numeric LAN address.Time between encoder register reads -The time between encoder register reads is one hour.Time between MIU transmissions - The time between MIU transmissions is 15 minutes onaverage.RF Protocol Error DetectionThe RF protocol is comprised of a header, data packet, and an error detection mechanism thatreduces the erroneous data.RF Transmission Period and RandomnessThe random period generation uses the same CellNet ALOHA model to generate the transmitrandomness. The randomness algorithm is defined so that no two consecutive transmissions fromtwo MIU’s will interfere with one another.Low Battery RF EmissionsThe MIU stops RF transmissions when the battery discharges below the normal operating voltageof 3.1 volts.
CellNet Pit MIU Master Rev. 1.004/14/99 3:13 PM16TROUBLESHOOTINGSix-Wheel Encoder Normal OperationIf the odometer reads 123456, the display should be 1 2 3 4 5 5.Note that the last digit displayed is a five if the last digit on the odometer is five through nine. Thelast digit displayed is a zero if the last digit on the odometer is zero through four.Four-Wheel Encoder Normal OperationIf the odometer reads 123456, the display should be 1 2 3 4 0 0.Abnormal OperationBelow are examples of abnormal operation for four-wheel encoders. Abnormal operation for six-wheel encoders is similar except that digits occupy all six positions.If an (H) or a ( - ) occurs on any of the four positions, the CellNet-Ready Pit MIU (ProRead Only)will transmit the data as follows:Examples: 1 2 E 4 0 0 or 1 2 b 4 0 0If the wire between the CellNet-Ready Pit MIU (ProRead Only) and the encoder is cut or reads asopen, or if the encoder is not programmed in a three-wire TDI format, the MIU will transmit thefollowing data:Example: AAAAAASECTION 5TESTING AND MAINTENANCEAfter the CellNet-Ready Pit MIU (ProRead Only) has been installed and wired, follow these stepsto verify that the MIU is working properly:1. Activate the MIU by holding the magnet for two seconds against the arrow on the Mainhousing. The arrow is just to the right of the Terminal Screws.2. Use a CellNet installation tool to verify the transmission from the Pit MIU.3. Verify all electrical connections.4. Test the installation again.5. If a Pro-Read ® Encoder Register is used, ensure the unit is programmed in the 3-wire, ten digitTDI format.6. Verify all electrical connections.7. Reactivate the MIU. (See Step 1)8. If a problem still exists, install a different MIU.
CellNet Pit MIU Master Rev. 1.004/14/99 3:13 PM17FCC REGULATORY NOTICEService Return Address:Schlumberger RMS, Inc.1600 Alabama HWY 229 S.Tallassee, AL 36078This CellNet-Ready Pit MIU (ProRead Only) has been tested and found to comply with the limits for aClass B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to providereasonable protection against harmful interference in a residential installation. This equipment generates,uses and can radiate radio frequency energy and, if not installed and used in accordance with theinstructions, may cause harmful interference to radio communications. However, there is no guaranteethat interference will not occur in a particular installation. If this equipment does cause harmfulinterference to radio or television reception, which can be determined by turning the equipment off andon, the user is encouraged to try to correct the interference by one or more of the following measures:-- Reorient or relocate the receiving antenna.-- Increase the separation between the equipment and receiver.-- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.-- Consult the dealer or an experienced radio/TV technician for help.(c) The provisions of paragraphs (a) and (b) of this section do not apply to digital devices exemptedfrom the technical standards under the provisions of §15.103. (d) For systems incorporating several digital devices, the statement shown in paragraph (a) or (b) ofthis section needs to be contained only in the instruction manual for the main control unit.Caution, changes or modifications not expressly approved by the party responsible for compliance couldvoid the user's authority to operate the equipment.

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