Honeywell Enraf 970SR Tank level measuring gauge User Manual K 970 IN GUIDE 4416717 717REV00 717 REV0 WPD

Honeywell Enraf Tank level measuring gauge K 970 IN GUIDE 4416717 717REV00 717 REV0 WPD

User Manual

Installation guide 970 SmartRadar ATi Page 1Installation guide970 SmartRadar ATiMarch 2004Part no. 4416.717_Rev.1Enraf B.V.P.O. Box 8122600 AV DelftNetherlandsTel. : +31 15 2701100Fax : +31 15 2701111E-mail : info@enraf.nlWebsite : http://www.enraf.com
Page 2PrefaceThe 970 SmartRadar ATi is a radar-based level gauge for liquid storage tanks.This installation guide is intended for technicians involved in the mechanical and electricalinstallation of the Enraf series 970 SmartRadar ATi.EC declaration of conformityRefer to the EC declaration of conformity, shipped with the instrument.Note:All connections to the instrument must be made with shielded cables with exception of themains, alarm output and Enraf field bus cable. The shielding must be grounded in the cablegland on both ends of the cable.Note:This device should only be used in a closed metal tank.Legal aspectsThe mechanical and electrical installation shall only be carried out by trained personnel withknowledge of the requirements for installation of explosion-proof equipment in hazardous areas.The information in this installation guide is the copyright property of Enraf B.V., Netherlands.Enraf B.V. disclaims any responsibility for personal injury or damage to equipment caused by:• Deviation from any of the prescribed procedures;• Execution of activities that are not prescribed;• Neglect of the general safety precautions for handling tools and use of electricity.The contents, descriptions and specifications in this installation guide are subject to change withoutnotice. Enraf B.V. accepts no responsibility for any errors that may appear in this installation guide.Additional informationPlease do not hesitate to contact Enraf or its representative if you require additional information.
Installation guide 970 SmartRadar ATi Page 3WarningThis device complies with Part 15 of the FCC Rules and with RSS-210 of Industry Canada.Operation is subject to the following two conditions:(1) this device my not cause harmful interference, and (2) this device must accept any interference received, including interference thatmay cause undesired operation.WarningChanges or modifications made to this equipment not expressly approved by Enraf B.V. mayvoid the FCC authorization to operate this equipment.WarningThis equipment has been tested and found to comply with the limits for a Class B digital device,pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protec-tion against harmful interference in a residential installation. This equipment generates, usesand 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 noguarantee that interference will not occur in a particular installation. If this equipment doescause harmful interference to radio or television reception, which can be determined by turningthe equipment off and on, 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.WarningThe radiated output power of SmartRadar 970 LTi is far below the FCC radio frequencyexposure limits. Nevertheless, the SmartRadar 970 LTi shall be used in such a manner thatthe potential for human contact during normal operation is minimized.For FCC compliant versions only
SafetyPage 4WarningDo not use the instrument for anything else than its intended purpose.WarningImproper installation of cable glands, conduits or stopping plugs will invalidate theEx approval of the 970 SmartRadar ATi.SafetySafety aspects of 970 SmartRadar ATiThe housing of the 970 SmartRadar ATi is explosion proof:• II 1/2 G EEx de [ia/ib] II B T4; KEMA 03ATEX2468 X; certified by KEMA, Netherlands• Class I, Division 1, Groups B, C, D T4, according to ANSI / NFPA 70 (Factory Mutual)Environmental conditions for the SmartRadar ATi are:ambient temperature : -40 to 60 °C (-40 to 140 °F)operating pressure : max. 6 barrelative humidity : 0 - 100 %ingress protection : IP67The emitted microwave energy is far below acceptable limits for exposure to the human body.Depending on the type of antenna, a maximum radiation of 0.1 mW/cm is generated.2
SafetyInstallation guide 970 SmartRadar ATi Page 5WarningIn hazardous areas it is compulsory to use personal protection and safety gear such as:hard hat, fire-resistive overall, safety shoes, safety glasses and working gloves.Avoid possible generation of static electricity.Use non-sparking tools and explosion-proof testers.Make sure no dangerous quantities of combustible gas mixturesare present in the working area.Never start working before the work permit has been signed by all parties.Pay attention to the kind of product in the tank. If any danger for health,wear a gas mask and take all necessary precautions. Personal safetyThe technician must have basic technical skills to be able to safely install the equipment.When the 970 SmartRadar ATi is installed in a hazardous area, the technician must work inaccordance with the (local) requirements for electrical equipment in hazardous areas.Safety conventions“Warnings”, “Cautions” and “Notes” are used throughout this installation guide to bring specialmatters to the immediate attention of the reader.•A Warning concerns danger to the safety of the technician or user;•A Caution draws the attention to an action which may damage the equipment;•A Note points out a statement deserving more emphasis than the general text, but notrequiring a “Warning” or a “Caution”.
Mechanical installationPage 6Mechanical installationAntenna and tank separator should already be installed (refer to installation guide SmartRadarantennas).Install SmartRadar ATi housing on tank separator as follows:1) Place housing on tank separator; mind locking pin!2) Turn coupling nut manually securing the housing.
Blockingrear cover Blockingfront coverElectrical installationInstallation guide 970 SmartRadar ATi Page 7WarningMake sure that all power to the instrument is switched off before opening the covers of the970 SmartRadar ATi. Failure to do so may cause danger to persons or damage the equipment.All covers of the 970 SmartRadar ATi must be closed before switching on the power.Figure 1 Blocking / sealing facilitiesCautionBefore opening the covers of theSmartRadar ATi, make sure that theblocking devices are removed (figure 1).Use Allen key 3 mm.CautionDo not damage the thread of covers and 970 housing and keep the thread free of dirt.After opening, grease it lightly with anti seize grease.When closing, never tighten the covers before the threads are properly engaged.The covers should be turned counter-clockwise until the thread “clicks” in place,then turn clockwise until the covers are fully closed.After closing the covers, do not forget to place the blocking devices.Electrical installationThe entire electrical installation shall be in accordance with the International Standard IEC 79-14for electrical equipment to be installed in hazardous areas.
FusesElectrical installationPage 8Figure 2 Fuses in 970 SmartRadar ATiCautionSafety depends on proper grounding. Check the resistance of the ground connectiondirectly after installation. The measured ground resistance shall be below the maximumprescribed by local grounding requirements.WarningWhen measuring the ground resistance, use a suitable explosion-proof tester.Preparing SmartRadar ATi for electrical installationMains supply, fuses and external mains switchMains supply for 970 SmartRadar ATi can be:• 110 - 240 Vac 45/65 Hz, or• 24 - 64 VdcPower rating : max. 25 VA (18 W).Supply variations of +10% and -20% are allowed.The 970 SmartRadar ATi is internally fused on theprimary side. Refer to figure 2.Fuse values, in accordance with IEC 127-2-3, are:• 1.6 A slow; I t value ≥ 10 A s for AC22supply• 2 A slow; I t value ≥ 25 A s for DC supply22Install an explosion-proof mains switch in themains supply cable to each 970 SmartRadar ATi.Specify which switch you need to operate theSmartRadar.GroundingThe SmartRadar ATi housing should be properly grounded to the ground reference(generally the tank). This is a safety grounding requirement.For this purpose, the SmartRadar ATi has an external ground terminal.Note:Grounding shall be performed in accordance with local regulations.
Electrical installationInstallation guide 970 SmartRadar ATi Page 9WarningImproper installation of cable glands, conduit or stopping plugswill invalidate the Ex approval of your 970 SmartRadar ATi.Cable glands / conduitCable glands:Explosion proof (Ex-d) or increased safe (Ex-e) cable glands must be used, depending on localrequirements. Refer to the Ex-marking on the identification label of the 970 SmartRadar ATi todetermine which type of cable glands is required.Note:Mount the glands according to the supplier’s instructions.Conduit:If the 970 SmartRadar ATi is installed in a hazardous area, threaded rigid metal conduit orthreaded steel intermediate metal conduit shall be used.Note:If the 970 SmartRadar ATi is installed in a hazardous area, stopper boxes must be appliedwithin 18 inches (0.45 m) from the 970 SmartRadar ATi to seal the cabling in the conduit.Depending on the wiring configuration, one to three ¾” NPT threaded cable glands(or rigid conduits) may be required with the 970 SmartRadar ATi.Note:Seal the unused cable inlets with an approved ¾” NPT threaded stopping plug.
I.S. part(blue terminals)non I.S. part(grey terminals)Electrical installationPage 10Figure 3 Terminal compartmentWarningOnly open the terminal compartmentcover (rear cover) when the poweris switched off.Lay-out terminal compartmentThe terminal compartment at the rear of the970 SmartRadar ATi is divided into anon-intrinsically safe and an intrinsically safepart. Cable entries are ¾” NPT.Intrinsically safe cabling may only enter atthe left-hand side cable entry, marked Ex-i(figure 3).Non intrinsically safe connectionsMainsMains cabling : Must be suitable for the 970 SmartRadar ATi power rating and, moreover,approved for use in hazardous areas.CommunicationEnraf field bus : One twisted pair cable is recommended. R = 200 Ω / line; C = 1 µF.max maxMaximum length: 10 km.Enraf field bus lines may be interchanged. If local regulations allow, mainsand Enraf field bus may share one cable. Mind the isolation voltage of thecores in the cable; refer to the International Standard IEC 61010-1.Note:If a quad cable is used and all four cores are twisted together, use twoopposite cores for Enraf field bus lines and the two others for mains.RS-232C (option): Cable: maximum length 15 m (50 ft); twisted pairs and shielded.RS-485 (option): Cable: maximum length 1200 m (3900 ft); twisted pairs and shielded.HART / : Cable: twisted pair; shielded. Maximum cable length: 1500 m (5000 ft);®analog 4-20 mA C = 40 nF; min. AWG 24 (0.2 mm ).max 2(option) Loop supply can be: external (passive) or internal (active).
CN2CN110 20 30 40 50 60Vmax014 3605001000150020002500Loop supply (Vdc)xxxxxxLoop resistance ( )WxxxxxxNo external resistance, No HARTExternal resistance for HARTcommunication and 4-20 mAExternal resistance for 4-20 mA®®PassiveActiveCN1CN2-+HART4-20 mAElectrical installationInstallation guide 970 SmartRadar ATi Page 11Figure 4 Changing passive/active loop supply and selecting external loop resistorSelecting external or internal loop supply is done by placing the connector with the brown wires for:• external supply in: CN1 of ICU_HPO board (passive loop)• internal supply in: CN2 of ICU_HPO board (active loop)With active loop, the supply voltage in the loop is: 20 Vdc (±5%).With passive loop, the minimum supply voltage is 8 Vdc; the maximum supply voltage is 64 Vdc.Supply voltages over 30 Vdc, require external series resistor (figure 4).HART communication requires a minimum series resistor of 250 Ω. Refer to figure 4, loop®resistance graph. When HART loop is external powered, minimum supply voltage is 14 Vdc and®maximum supply voltage is 36 Vdc with 250 Ω resistor. With higher external supply voltage, seriesresistor must be increased. The maximum resistance for HART communication is 1100 Ω, which®corresponds to a maximum of 57 Vdc loop supply voltage.The power rating of external resistor depends on resistance value; we recommend 1 W / kΩ.Hard alarm output contactRelay output (option): Potential free relay contact; contact rating: U = 50 Vac or 75 Vdc;maxI = 3 A. Mind the isolation voltage of the cores in the cable; refer to themaxInternational Standard IEC 61010-1.
Electrical installationPage 12Figure 5 Non-intrinsically safe connectionsNote:Use either AC or DC supply (refer to instrument label).When using RS-232C or RS-485 communication, Enraf field bus signal is not available.When using HART communication and/or analog level output, Enraf field bus signal is®available.
Electrical installationInstallation guide 970 SmartRadar ATi Page 13Figure 6 Detailed communication wiring
Electrical installationPage 14Figure 7 Grounding cable shield with RS-485 and HART / analog output signal®Figure 8 Selecting terminal resistor in RS-485 cablingThe shielding of the RS-485 and HART / analog output signals must be connected to ground at®both sides of the cable. There can be a potential difference between tank ground and ground in thecontrol room. Therefore, capacitors should be applied in the shield grounding between tank andcontrol room, preferably in (one of) the junction box(es). Capacitance value: 10 to 100 nF. Thecapacitor can be located in a terminal. Such devices are available from for instance Phoenix.At the end of a RS-485 transmissionline a 120 Ω resistor must be placed(figure 6).On the ICU_RS-232C/485communication board the terminalresistance can be connected bymeans of jumper 1 (figure 8).
Electrical installationInstallation guide 970 SmartRadar ATi Page 15CautionThe intrinsically safe options described in this section have been certified as explosion-proof.Make sure that the certificate of approval is available on site and act in accordancewith the instructions as given in the approval certificate.CautionIntrinsically safe wiring shall be separated from all other wiring.Cable lay-out shall be in accordance with local regulations.Intrinsically safe connectionsThe cable for the intrinsically safe option(s) should be fed through the cable entry at the side of theintrinsically safe (blue) terminals. Blue marked cables are recommended for the I.S. options.If more than one connection is to be made, an external junction box is required.Note:The shield of the intrinsically safe cable shall not be connected inside the SmartRadar ATihousing. Connect the shield of the cable externally in the cable gland at both ends of the cable.Device Cable requirementSpot temperature element : Shielded; R = 12 Ω / line.maxAverage temp. element : Twisted pair and shielded; R = 25 Ω / line.max(combined water probe)Pressure transmitters : Twisted pair and shielded; R = 25 Ω / line (only pressuremaxtransmitters with HART protocol).®Pressure transmitter P1 is the bottom transmitter (measures liquidhead) and P3 is the top transmitter (measures vapour pressure).Water bottom probe : Twisted pair and shielded; R = 25 Ω / linemax(separate from temp. elem.) (only with HART protocol).®Tank Side Indicator : Twisted pair and shielded; R = 5 Ω / line, maximum cable lengthmax50 m (160 ft).
Electrical installationPage 16Figure 9 Intrinsically safe connectionsNote:If pressure transmitters are connected to HART input 2, it must be verified that the maximumvalues for current and power of the ICU_HPI option board HART input 2 circuit are notexceeding the maximum values of the connected pressure transmitters. Refer to Appendix B.If the values of the HART input 2 circuit are too high, then connect the pressure transmitters toHART input 1 and the 762 VITO Interface to HART input 2.
ENRAF264 (10 )143 (5 )3/8"5/8"35(1 )(space needed toremove cover)100(3 )15/16"(space needed toremove cover)3/8"56(2 )3/16"OptionalIR connectorø260 (10 )1/4"100 (3 )15/16"159 (6 ) 128 (5 )1/16"1/4"1/8"76 (3")105 (4 )************Cable entry 3/4" NPT, Ex-i (1x)Cable entry 3/4" NPT (2x)AppendixInstallation guide 970 SmartRadar ATi Page 17Appendix A Dimensional drawing
AppendixPage 18Appendix B ATEX ApprovalThe terminal compartment of the 970 SmartRadar ATi has been ATEX approved as explosion-proof and as being increased safe. The type of cable glands that must be used:For protection type increased safe EEx e approved glands are to be used.For protection type explosion-proof EEx d approved glands or conduits are to be used.Connection requirements of optional boardsThe identification label on the 970 SmartRadar ATi indicates whether your instrument is equippedwith an optional board with intrinsically safe measuring circuits.I.S. option for Tank Side Indicator, [EEx ib] IIB:Output circuit for 977 TSI:Max. values : U = 21 V, I = 325 mA, P = 1.5 WMax. permissible ext. inductance : 1.4 mHMax. permissible ext. capacitance : 1.27 µFICU_HPI option board SPOT, [EEx ia] IIB:Spot temperature input circuit:Max. values : U = 23.1 V, I = 221 mA, P = 0.19 WMax. permissible ext. inductance : 3.5 mHMax. permissible ext. capacitance : 980 nFICU_HPI option board HART1, [EEx ia] IIB:HART input 1 circuit (for 762 VITO interface):Max. values : U = 23.1 V, I = 90 mA, P = 0.52 WMax. permissible ext. inductance : 15 mHMax. permissible ext. capacitance : 1.02 µFICU_HPI option board HART2, [EEx ia] IIB:HART input 2 circuit (for HART pressure transmitters and/or external water probe):®Max. values : U = 23.1 V, I = 148 mA, P = 0.68 WMax. permissible ext. inductance : 7 mHMax. permissible ext. capacitance : 1.02 µF
NotesInstallation guide 970 SmartRadar ATi Page 19Appendix C Related publicationsModel 970 SmartRadar ATi Safety instructions for installation, commissioning, operation andmaintenanceInstallation guide SmartRadar AntennasInstruction manual 970 SmartRadar ATiInstallation guide VITO sensorsInstallation instructions for MERCAP Side mounted water probeInstallation guide 977 TSI Tank Side IndicatorInstallation info 003 (Installation HIMS system)
: +31 15 2701 100: info@enraf.nl: http://www.enraf.comWe at Enraf are committed to excellence.Enraf is a registered trademark.Enraf B.V. Netherlands.Your Enraf distributorInformation in this publication is subject to change without notice.Delftechpark 392628 XJ, DelftTel.E-mailWebsiteP.O. Box 8122600 AV, DelftNetherlandsDelftInstrumentsPage 20

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