Schlumberger Sema TALWCNMIU1 Water Meter Spread Spectrum Transmitter User Manual

Schlumberger Sema Water Meter Spread Spectrum Transmitter Users Manual

Users Manual

15956 Rev. 012/10/98 3:36 PM1SECTION 1INTRODUCTIONABOUT THIS MANUALThis instruction manual explains the installation, operation, and maintenance of theSchlumberger Wall Meter Interface Unit1(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, preliminarytests, 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, andmaintain the 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
15956 Rev. 012/10/98 3:36 PM2PRODUCT DESCRIPTIONThe Wall Meter Interface Unit1(Wall MIU1 or MIU1) by Schlumberger, is a compact electronicdevice that collects meter reading data from an encoder register and transmits the data forcollection to a nearby line of sight CellNet MicroCell Controller(MCC) fixed network. Thisproduct is based on CellNet BAMM RF design. This is a one way transmission to MCC. Sincethe MIU can be mounted as much as 500 feet from the encoder register, (See Table 1.5 forsystem compatible encoders and maximum installation cable length/distance.), optimumbroadcast signal strength is obtainable, insuring a high percentage of accurate. The MIU alsomeets FCC regulations part 15.247, allowing higher output power and greater range. The MIUuses direct sequence spread-spectrum technology to avoid RF interference and enhance security.• Protects utility liability by increasing meter reader safety.•Requires no field programming.• Economizes manhours needed to collect and process meter readingdata, thereby increasing utility profits.Figure 1.1 Wall MIUOPERATIONS OVERVIEWThe Wall MIU1 collects meter readings from the encoder register on an hourly basis andtransmits the information every fifteen minutes. This redundant transmit of the same data fourtimes an hour increases the greater reliability of the data to be received the fixed network 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 SpecificationsTransmitter Channels 1Channel Frequency 902-928 MHzFCC Verification Part 15.247
15956 Rev. 012/10/98 3:36 PM3Table 1.4 Environmental ConditionsOperating Temperature -22° to 149°F (-30° to 65°C)Storage Temperature -22° to 149°F (-30° to 65°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 lengthbetween encoder and remote receptacle.Dimensions and WeightTable 1.6 Dimensions and WeightDimensions Refer to following figuresWeight approximately 1 LB (450 grams.)
15956 Rev. 012/10/98 3:36 PM4SECTION 2INSTALLATIONThis section describes storage and unpacking instructions, preliminary tests, tools and materials,site selection, and installation.STORAGEInspect shipping containers for damage upon receipt and inspect contents of any damaged cartonsprior to storage. Store the cartons in a clean, dry environment. The temperature should remainbetween -22° and 149°F (-30° and 65°C). Keep in mind that the Wall MIU1 has an internalbattery. Storage for more than one year, of the Wall MIU1, may affect product life. Be sure touse a first-in first-out inventory control system.UNPACKINGAs with all precision electronic instruments, the Wall MIU1 should be handled with care;however, special handling is unnecessary. After unpacking the MIU, inspect it for damage. If theMIU appears to be damaged, or proves to be defective upon installation, notify yourSchlumberger Sales Representative. If the MIU requires reshipment, use the original cardboardbox and packing material.PRELIMINARY TESTSThe Wall MIU1 does not require any tests or programming prior to installation.TOOLS AND MATERIALSTables 2.1 and 2.2 show the recommended tools and materials you may need to successfullyinstall the Wall MIU1 or to replace the MIU’s internal Battery. Note that some items may notapply to your specific installation or the list may not contain all required tools or materials.Table 2.1 Recommended ToolsItem Description/Recommendation UseTool kit contains standard toolsincluding:• Assorted screwdrivers• Needle-nose pliers• Wire stripperDiagonal cutters• Electrician’s knifeHammerVarious installation procedures
15956 Rev. 012/10/98 3:36 PM5Magnet 6 lb. force activating the MIUTable 2.2 Recommended MaterialsItem Description/Recommendation UseCable Solid 3 conductor, #22 AWG(black/green/red)Connecting MIU to encoder registerMoisture protectioncompoundDow Corning #4 orGE Novaguard GB24 ®Covering exposed wires and TerminalScrews on register and MIUScotchloks ® Splicing three-conductor cablesGel-caps ® Splicing replacement battery wiresSite Work Order Documentation provided byyour utilityReceiving and recording informationabout the work site
15956 Rev. 012/10/98 3:36 PM6INSTALLATIONSafety 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 will need access to thewater meter.• If the Site Work Order does not have an MIU ID number on it, write in the ID number of theMIU you are about to install. If the Site Work Order already has a MIU ID number on it, verifythat it matches the ID number on the MIU you are about to install.Note: • Always follow your company’s safety practices and installation guidelines wheninstalling an MIU.• Never perform an installation during a lightning storm or underexcessively wet conditions.• Use only approved climbing equipment.Site SelectionThe Wall MIU1 should be installed and operated in an environment where the temperature staysbetween -22° and 149°F (-30° and 65°C). Installation and operation in moderate temperaturesincreases reliability and product life.Follow these guidelines when selecting a location to install the Wall MIU1:• For best results, Schlumberger recommends mounting the MIU on the outside of the buildingand in a location that provides a direct line-of-sight to the path of the meter reading device.• For best results, Schlumberger recommends, the MIU be installed approximately five feetabove the ground.• The MIU must be installed in a vertical and upright position.• The preferred mounting surface for the MIU is a flat wall, but it can also be mounted to a pipe.• 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 data strength.• The maximum cable length between the encoder register and MIU depends on the register’smanufacturer and model. Refer to Table 2.3 for maximumcable lengths.Table 2.3 Maximum Cable LengthsEncoder Register Maximum Cable Length
15956 Rev. 012/10/98 3:36 PM7Schlumberger PRO-READ ® * 500 feet (152 meters)* Meets manufacturers’ published specification for wire lengthbetween encoder and remote receptacles.Verifying/Preparing the Encoder RegisterThis Wall MIU1 is designed for use with Schlumberger ProRead Encoder Rev. E, D and C.Before installing an MIU, the encoder register must be correctly wired and/or programmed towork with the MIU.If a three-conductor cable is not connected to the encoder register, it will have to be connectedand run to the outside of the building. Refer to Steps 1 - 9 in this procedure for that information.If a three-conductor cable is already connected to the encoder register and available on theoutside of the building, the wire color/terminal screw connections on the encoder register willhave to be verified. Refer to Step 4 in this procedure for that information.If a three-conductor cable already connects a Pro-Read ® encoder register to a wall-mountedreceptacle, the Pro-Read ® must be programmed for three-wire mode. Refer to Step 4 in thisprocedure for that information.If a three-conductor cable already connects a Pro-Read ® encoder register to a wall-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.”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 shownin Figures 2.4 and 2.5.Table 2.4 Encoder Register InterfaceEncoder Register Wire Color / Encoder TerminalSchlumberger Pro-Read ® Black / B Green / G Red / RNote: If the MIU will be connected to a Pro-Read ® encoder register, the Pro-Read ® must beprogrammed for three-wire mode using a Pro-Read ® programmer and its ten-digit TDI format.Do this through the Pro-Read ® receptacle before removing the receptacle. For more informationabout Pro-Read ® programmers, contact your Schlumberger sales representative.
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15956 Rev. 012/10/98 3:36 PM92-75 Thread the cable around the strain relief posts (Figure 2.6).Figure 2.6 Cable Threaded Around Strain Relief Posts6 Use a generous amount of moisture protection compound (Dow Corning #4 ®or GE Novaguard GB24 ® ) to completely cover the terminal screws andexposed wire (Figure 2.7).Figure 2.7 Installing Moisture Protection Compound
15956 Rev. 012/10/98 3:36 PM107 Align the cable with the notch in the terminal screw cover and snap the coveronto the encoder register (Figure 2.8).Figure 2.8 Covering the Terminal Screws8 Run the cable from the MIU installation point to the encoder register, fasteningit securely as necessary.9 If necessary, drill a hole in an appropriate location and run the cable throughthe hole to the outside of the building.
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15956 Rev. 012/10/98 3:36 PM13Installing the MIUPlease read and comply with all of the information in “Verifying/Preparing the EncoderRegister” before continuing with this section, “Installing the MIU.”Please read this entire section before attempting an MIU installation:1 Select a location for the MIU that meets the recommendations in “Site Selection.”2 Fastening the three-conductor cable securely as necessary, run it from whereit exits the building to where the MIU will be mounted.3 Unscrew the bolt holding the Main Housing to the Mounting Adapter.4 Release the Clip at the bottom of the MIU and separate the Main Housing from the MountingAdapter (Figure 2.9).5 Based on Figure 2.10 and the particular requirements of the installation site, decide how youwill install the MIU.Figure 2.10 Mounting AdapterNote: A variety of holes in the Mounting Adapter allows for a quick and easy installation:• When the cable will enter through the rear of the MIU, rather than the bottom of the MIU, usethe indicated hole to enter the cable.• When the MIU will replace a receptacle, using the correct holes allows use the receptacle’soriginal mounting holes.• When the MIU will be mounted to a pipe, use the indicated hole to bolt the Mounting Adapterto a pipe clamp.6 With the Mounting Adapter in the desired position and the Arrow pointing up, screw theMounting Adapter to the wall.7 If the cable was not routed through the back of the Mounting Adapter before itwas screwed to the wall, route the cable through the notch at the bottom of theMounting Adapter (Figure 2.11).8 To provide maximum strain relief, wrap the cable around the Strain ReliefPosts (Figures 2.11 and 2.12).6 With the Mounting Adapter in the desired position and the Arrow pointing up,screw the Mounting Adapter to the wall.7 If the cable was not routed through the back of the Mounting Adapter before itwas screwed to the wall, route the cable through the notch at the bottom of theMounting Adapter (Figure 2.11).8 To provide maximum strain relief, wrap the cable around the Strain ReliefPosts (Figures 2.11 and 2.12).9 Route the cable through the notch in the top of the Mounting Adapter. Make
15956 Rev. 012/10/98 3:36 PM14sure the cable stays in the notch during the installation of the Main Housing(Figures 2.11 and 2.12).10 Install the Main Housing by mating the hinge elements at the top of the MainHousing to the hinge elements at the top of the Mounting Adapter and thenlowering the Main Housing until is snaps into place.11 Connect the appropriate color wire to each Terminal Screw (B = Black,G = Green, R = Red).12 Follow the steps in “Testing the Installation.”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 bolt that holds the Main Housing to the Mounting Adapter.2 Use a generous amount of moisture protection compound (Dow Corning #4 orGE Novaguard GB24) 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 Tamper 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.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.Splicing A Three-Conductor CableSplicing three-conductor cables together should be avoided whenever possible. However, if anexisting Pro-Read ® wall receptacle is not in an appropriate location for replacement by an MIU,it may 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 wall.2 Remove the wires from the receptacle.3 Cut away the exposed copper from each wire.
15956 Rev. 012/10/98 3:36 PM154 On the three-conductor cable that is to be spliced on, strip off 3/4" of the 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) andinsert the matching-colored pair into a Scotchlok (Figure 2.13).Note: If the MIU will be connected to a Pro-Read ® encoder register, the Pro-Read ® must beprogrammed for three-wire mode using a Pro-Read ® programmer and its ten-digit TDI format.Do this through the Pro-Read ® receptacle before removing 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).7 Inspect the Scotchlok to verify that both wires are fully inserted. If they are not, redo the splice(Figure 2.15).
15956 Rev. 012/10/98 3:36 PM168 Repeat Steps 5 through 7 for each pair of wires.9 Tuck the Scotchloks into the splice enclosure and route the cables through the cutouts at theends of the splice enclosure (Figure 2.16).10 Coat the inside of the splice enclosure with Dow Corning #4 ® or GE Novaguard GB24 ®moisture protection compound (Figure 2.17).11 Close the splice enclosure, pressing it firmly until the teeth lock together(Figure 2.18).
15956 Rev. 012/10/98 3:36 PM17REPLACING THE BATTERYFollow these steps to change-out a Wall MIU1’s internal Battery:1 Unscrew the bolt 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 Tamper Pin out of the Terminal Screw Cover.4 Remove the Terminal Screw Cover.5 Remove the wires from the Terminal Screws.6 Remove the seal wire or seal clip from the Seal Holes at the bottom of the Main Housing.
15956 Rev. 012/10/98 3:36 PM187 Using a flat-head screwdriver, gently pry down 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.8 Remove the Main Housing by lifting it until it unhinges and comes free from the MountingAdapter.9 Remove the Battery from the Main Housing by pressing in on the left end of the Battery until itreleases and comes free from the Main Housing.10 As close to the Battery as possible, cut the battery connection wires one at a time.11 Use gel-caps to splice the wires from the new Battery to the wires that connected to the oldBattery.12 Snap the Battery into the Receiving Clips on the Main Housing.13 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.”Note: Cutting the battery connection wires one at a time prevents shorting.Note: Insure the Wall MIU1’s black wire is connected to ground (-) and the red wire isconnected to the positive (+) wires of the new battery.SECTION 3OPERATING INSTRUCTIONSAt the time of installation, the installer uses the CellNet installation tool to verify that the WallMIU1 is operating properly. Following the installation, the Wall MIU1 operates automaticallyand continuously without any type of human intervention.SECTION 4THEORY OF OPERATIONSURF ® MIU ProgrammingThe MIU is not field programmable. At the factory, each of the following items are programmedinto the MIU:Serial number - Each MIU is given a unique LAN address and a serial number/identificationnumber. Custom serial numbers are not programmed. The default value is the last programmedvalue plus one.Time between encoder register reads -The time between encoder register reads is set for onehour.
15956 Rev. 012/10/98 3:36 PM19Time between MIU transmissions - The time between MIU transmissions is set forapproximately 15 minutesRF 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 MIUs will interfere with one another.Low Battery RF EmissionsThe MIU stops RF transmissions when the battery discharges below the normal operatingvoltage.TROUBLESHOOTINGSix-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.The last 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 digit occupy all six positions.A If an (H) or a ( - ) occurs on any of the four positions, the Wall MIU1 will transmit the data asfollows:Examples: 1 2 E 4 0 0 or 1 2 b 4 0 0If the wire between the Wall MIU1 and the encoder is cut or reads as open, the Wall MIU1 willtransmit the following data:Example: AAAAAAFor three-wire installation, the problem may be in the register, wiring between register andreceptacle, receptacle pins, or the TU-89 pins. If all pins are clean and the wiring is verified to begood, replace the register.Example: H H H H - -For three-wire installation, replace the register.SECTION 5
15956 Rev. 012/10/98 3:36 PM20TESTING AND MAINTENANCEAfter the MIU has been installed and wired, follow these steps to verify that the MIU is workingproperly: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 Wall MIU1.• Verify all electrical connections.• Test the installation again.5 If a Pro-Read ® Encoder Register is used:• Insure the unit is programmed in “3-wire mode.”• Verify all electrical connections.• Reactivate the MIU. (See Step 1)6 If a problem still exists, refer to Section 5, “Testing And Maintenance.”
15956 Rev. 012/10/98 3:36 PM21FCC REGULATORY NOTICEService Return Address:Schlumberger RMS, Inc.1600 Alabama HWY 229 S.Tallassee, AL 36078This Wall MIU1 been tested and found to comply with the limits for a ClassB digital device, pursuant to Part 15 of the FCC Rules. These limits aredesigned to provide reasonable protection against harmful interference in aresidential installation. This equipment generates, uses and can radiateradio frequency energy and, if not installed and used in accordance with theinstructions, may cause harmful interference to radio communications.However, there is no guarantee that interference will not occur in a particularinstallation. If this equipment does cause harmful interference to radio ortelevision reception, which can be determined by turning the equipment off andon, the user is encouraged to try to correct the interference by one ormore 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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