Emerson Process Management MSP900SH User's Manual
Contents
1. P049 _ Spike Rejection 0 0 0 X JAuocvcutE 9 l X LOAD DEFAULTS J J 1209 BaseUnts l POO4 j FinalAssembly Number J as applicable i as applicable PVC o D DI D 30 d 0 o o c ER E 8 28 225 g e 3 5 a 0 0 30 70 80 x BI MESSAGE MSP900 MSP900 XMTR D FIESETETE zh o 0 2 c 1 460 6 17 3 0 rT zx oit gt o 5 E o c EJ E eo 3 o z 3 c eo S gt PVC Unchanged ex factory 0 as applicable applicable 095 095 096 Hardware Revision WIN anufacturer s Code nique ID iversal Cmd Rev ransmitter Spec Cmd Rev 964 esponse Preamble 965 ransmitter Flags D900 imary Variable base units 5 SI evel SV base units as applicable w n as applicable o o DARASGGERENE 2834 o gd 6 2 0 3 M o 90 90 ange TV base units ransducer Temperature Core urrent output Current Output 96 D910 Target Range Distance to Target base units el 0913 Target Echoes Pa 2 2 da i o 2 o lt 2 2 gt es E m oe SaS zz 9 gt D915 CorF D916 HISTORY P003 Date of Change 01 01 2002 012. Sy NOILYNIGHOD NI O3NIWYX3 A17Y914193dS 10 SnivuvddV IIVS ATWOISNIMINI 40 NOI123NNO2N31Ni SMOTIV 1d39NDO ALLINI 3Hl 31DNIK N04 Snivuvddv 30 zWv5d YO ONNOVI 01 Shi ACOS 30 39V110 1531 JV NY SNIONVISHIIA 40 31 8VdV2 38 LSMH NOI1V201 SnoCHVZVH 3H NI 1102812 W2INI2313 3H1 4 310N 335 H1Nv3 N33HIS 310N 33S S 310N 33S IN3HdINDI N011V201 031 41SSWIONN 310N 13S 03115 3S1MU3H10 SSIINN 38134 TTIW NI SNOISN3HIG INNIWYIL 5 05 01 0 NHIO BV INONY 39V1d 1 230 Z 2 0 NWIG 32474 WWIO3C O8 0s NAIO U3EHNN 330HM 031212395 351MN3H10 SSITNN S32NYHU3101 WOT530 WO 1300M ALTTTAM INTIVA dO NYHO 30 INDAI Ew Uo L s suonano sv 55 wew v mi NI CIAVISIU SIMOIM TIV S3OvWvO 30 IMIRAVA BU4 31EVIT Qj 38 VIIA 330N34 0 OFLIMINONA 51 MOIIYSIMQW DY SS3UdX3 ANOHLIA SHIMIO SINJINDO 511 40 NOIIV2INTNOO IMI SY TIIN SY FIV NI SIN3H3BIDO34 JHL 1334 SH313WVBVd 1d32N02 ALIIN3 350H 108100 33v ATWOISNIMINI NY HLIM IN3HdIn03 031V1205SV ANY 2 31871 SIN3A3HIPO3H FHL 133 558313NVHVd 1d39N02 ALILN3 350HM 5011051 73NNVH2 V 40 13NNVHO JNO XO YOLVIOS TINNVHO 319NIS Q3AO0NddV ANY 318V1 NI SIN3A3HIDD3H 3HI 133K SH3l3WVHVd 1d32NOO ALILNG 3SOHM ALIUYIOd 34VS JH 30 SIYZIULVO 03515104 TINNVHD 379N1S OMI YO WNO GIAOUddY ANY 435113 20 A0S2 80 SWY 40 5S32X3 NI ONNOYD 01 1939539 HLIM 7 11 310
3. NA NA Transmitter bottom reference True invert Meniscus The liquid surface at the point of measurement must have a stable smooth surface and uniform approach velocity It must not be affected by baffles foam hydraulic jumps or any other object likely to cause flow disruption The primary element should be free from any situation where it is likely to drown refer to relevant standard for further information The MSP900SH transmitter has integral temperature compensation and must be protected at all times from direct sunlight and any radiated heat For maximum accuracy and stability of level measurement reading the transmitter should always be shrouded to prevent the incidence of direct sunlight If the flow structure permits mount the transmitter within the flow channel or chamber Page 7 Installation Operation amp Maintenance Manual IP2040 IM Rev AA MSP900SH May 2007 In many installations the use of a calibration device is mandatory Mobrey Measurement offer the MSP HVD for this purpose details on request In order to minimise measurement uncertainties when a calibration device is installed it is recommended that the calibrated range should be kept to a realistic minimum i e max flow plus 10mm Ensure that the target plate of the calibration device does not fall within the 300mm blanking distance of the transmitter All calibrations should be derived to suit as installed conditions If you are in doubt ab
4. identified as follows Red 24V dc Black OV dc Screen Earth must be connected to an Intrinsically Safe Earth in the non hazardous area if the transmitter is installed in a hazardous area Connect to a standard earth if the transmitter is not in a hazardous area The cable may be cut to length on site or may be extended using an IP65 junction box and suitable extension cable up to a total length of 3000 m Where the transmitter is installed in a hazardous area it is the responsibility of the user to ensure that the cable parameters of the total length of cable used together with the parameters of the MSP900SH are less than the safety parameters of the safety barrier or MCU900 Control Unit if used instead See section 3 4 Multicore cable may be used provided that each pair within the multicore has a separate shield As good instrumentation practice avoid tracking the cable with other cables which carry high voltages if possible Page 8 Installation Operation amp Maintenance Manual IP2040 IM Rev AA May 2007 MSP900SH 3 4 Additional components in the two wire loop 3 4 1 Safety barriers installation of the transmitter in a hazardous area When used with the Mobrey Measurement Control Unit Series MCU900 NO additional safety barriers are required as the output from the control unit is Intrinsically Safe refer to manual IP2030 IM supplied with the control unit for full details If powering the transmitter from any oth
5. is the full range of the transmitter signal If in doubt do not hesitate to contact Mobrey Measurement Customer Support for further advice Page 14 Installation Operation amp Maintenance Manual IP2040 IM Rev AA May 2007 MSP900SH ing Ily safe control draw insica Appendix 3 Intr re MIC cJ o i ee Ti se A eZ 1301 133H5 EN 0 8 6 215 IELI 26012 90876 28 SNIMVHO 1081N02 Em Rm ATIVOISNIMINI suni 09 18 00 NI dI LON AVW INI dd ONIMYYO WWAOUddV KINO LNIOd 36 AWW 031113 31 33825 3H1 ISVI SIHI NI 038 SI N01V310SI DINVAIVO V N3HM O3HIn038 LON SI 4133 5 S I NV 9 O 5531 38 1SnH HlNY3 DI VESNA 3INVISISIY JHL SVESNB u3lHHVE 01 Q3123NNO2 38 150 N33825 3Hl SE3lNNV8 A133V5 INDHS 04 NO11V201 SnOQNVZYH 3Hl N04 SniVvBVddV 0317120550 NO GILVYIIONI 97 NO 91 SINVIONONI ONV 92 YO 99 32NVII2VdVO Q3MDT1V 0332X3 LON 150 11 SINVIOMONI ONY 19 3INVITIVAYI q3123108dNn SnivuvedY S FHL 5714 ZINVIONONI ONY 39NYII2VdV2 378Y9 318V2 3H1 17 ONIONIONI SnivBVddY 3375 ATTOISNIBINI 381 TIY 30 17 ONY 12 S307VA 1 101 NVHI H31v389 SnivbvVdcY O31VI2USSV 30 93 91 ONY 92 92 30 SINIVA Q3A0uddV FHL CONV SniVuvddv 34V5 ATWOISNIMINI 3HI 30 ONY IN DI 7WN0I YO 5531 3UY Snivauvdev 031 12055 30 51 9 ONY 79A ON 30 SINMA CIADYdAY 3Hi N3HM W31SAS
6. the designs or specifications of product and services at any time without notice International Americas Emerson Process Management Emerson Process Management AS miQUALITY Mobrey Measurement Rosemount Inc 158 Edinburgh Avenue 8200 Market Boulevard Slough Berks UK SL1 4UE Chanhassen MN US 55317 T 44 0 1753 756600 T US 800 999 9307 i F 44 0 1753 823589 T International 952 906 8888 S www mobrey com F International 952 949 7001 www rosemount com EMERSON
7. 01 2002 01 01 200 P046 MaximumTemperatue 50 50 P047 Minimum Temperature C 10 Page 13 Installation Operation amp Maintenance Manual IP2040 IM Rev AA MSP900SH May 2007 Appendix 2 Use with Mobrey Measurement MSP90 Series controllers example Programming example when using the new MSP900SH transmitter with an old style MSP90 Series controller A2 1 Vertical rectangular or cylindrical sump originally displaying level in metres 4 2m from transducer face to bottom of sump The new MSP900SH should be mounted in the same position as the old transducer such that the distance to the bottom of sump is 4 2m If this is not possible re measure the distance to the bottom of the sump once the MSP900SH transmitter is mounted The MSP900SH transmitter should be configured with a bottom reference of 4 2m or whatever the new distance is and the 4 20mA output ranged from Om level to 3 9m level 4 2 0 3m dead zone 3 9m If there is no HART device available to configure the MSP900SH in this way refer to the note below On the MSP90 control unit Set P39 7 Current input Set P3 3 9 Range of 4 20mA signal Set or check P21 0 linear vessel Note If it is not possible to re range the MSP900SH transmitter on site it may be used with factory default settings The 4 20mA from the MSP900SH transmitter is set for 4mA at and 20mA at 11 7m In this case P3 must be set to 11 7 as this
8. 4 30 39UNOS V SNOILIGNOI TVABONEY HO 1VABON Y30NN NIVINOD HON HOY 031 14915 38 10N 150 11 1d39X3 0314 93dSNN NO0I1V207 03 41SS IONN 351 30 AYLNNOD FHL 32112VHd NOFIVIIVISNI IN3WdINO3 34YS ATTWDISNIBINI 0 51102512 33 5 ATIWDISNIMINI 30 NOIIVTTISNI N03 391 19VHd Q3QN3KA023H 10 90 ZIdt YSI ONY SOS ONY 05 5312115 JIN HLIM 32NVOMO2OV NI 38 01 iN3W39NVENV ONTONNOSI ANV ONIONTINI 1N3Ad1n03 40 NOLIVIIVISNI ANDUNDIOO Siki 40 NOLIVSITMAN 01 0014 510 N011200084I4 Del 5002 031IWI ASUBUH 15310N 17 19 CId M3M0d INdNI WOW ovp CIT IN349802 INNI WOW 9 4 10 39v120A INdNI WOW 1 SHILINVUYd 1d32N02 ALTINI 404 379V1 335 v 0 Het6dSW HILLIWSNYU1 73437 JINOSYYLIN 3dAl YALLIWSNVYL CIVIMOd d007 Ly 9 310N 335 318v2 N011V201 031 4ISSV 19Nn Snivuvddv Q31V1208S TWNIMBI1 DII BII VII 1 0 SINDZ I 55 12 Q 2 8 v SdNOY9 NOISIAIO 55 12 NOILV907 SnOQNVZVH SNIVBYddY JAWS ATIVIISNIBINI JINVITDVdVD TVNYSINI XVH XVW XW Page 15 Installation Operation amp Maintenance Manual IP2040 IM Rev AA MSP900SH May 2007 SP The Emerson logo is a trade mark and service mark of Emerson Electric Co Rosemount is a registered trademark of Rosemount Inc Mobrey is a registered trademark of Mobrey Ltd All other marks are the property of their respective owners We reserve the right to modify or improve
9. Installation Operation amp Maintenance Manual IP2040 IM Rev AA May 2007 MSP900SH Mobrey MSP900SH Series Level Transmitter Software version 2 1 gt ex mobrey EMERSON www mobrey com Installation Operation amp Maintenance Manual IP2040 IM Rev AA MSP900SH May 2007 Appendices CONTENTS Introduction The MSP900SH ultrasonic level transmitter Type numbering system Safety data Pressure Equipment Directive Specifications Installation Location of the MSP900SH transmitter General considerations Liquid surface conditions In tank well effects Open Channel Flow installations Mounting the transmitter above the liquid surface Wiring Additional components in the 2 wire loop Safety Barriers Lightning surge protection and other loop devices Wiring to allow HART communication Use with Mobrey Measurement MSP90 Series controllers Wiring Maintenance Commissioning Programming Current output Hart programming of the MSP900SH transmitter Accessories Submersion sheild Head Verification Device Appendix 1 MSP900SH Programming parameters Appendix 2 Use with Mobrey Measurement MSP90 Series controllers Example Appendix 3 71097 1131 FM Intrinsically Safe Control Entity Drawing Footnote In this manual the following terms are used which refer to trademarks from other manufacturers HART is the protocol adopted for the MSP900 SMART Communications HART is a re
10. SH transmitter normally used in Open Channel Flow applications The HVD is mounted on an arm over the channel and supports the MSP900SH on an integral bracket A target plate at a fixed distance from the transmitter face may be swung under the transmitter The level and flow readings calculated by the transmitter in this situation may then be compared to a local calibration plate to ensure that the system is functioning correctly Refer to data sheet IP267 for further details Page 12 Installation Operation amp Maintenance Manual IP2040 IM Rev AA May 2007 MSP900SH Appendix MSP900SH programming parameters USER DEFAULTS MSP900SH BE m 400 4800 Linear Linear 1 1 i ottom Reference 5 base units ank Shape PV Scale Factor P014 Profile Height NLP CURVE rofile Point 5 P035 rofile Point 6 P036 Profile Point 7 P037 i rofile Point 9 P039 Profile Point 10 lessage POO1 P002 p rimary Variable Units PV Units pperrange value ower range value P020 Damping LE Dela P022 LE Action 1 A Hold Hold P024 of Sound base units s 1088 6 13063 Auto Auto P026 Threshold Auto Auto Auto ADVANCED P041 Pulse Repetition sec 10 10 Po42 EchesNeeded 1 4 4 P043 Threshold Time m 20 20 20 P044 TargetPuses Auto Auto Auto
11. ansmitter can be tuned to ignore these false echoes on site In non linear tanks with rounded or conical bottoms always mount the transmitter off centre In some cases it may be desirable to install a perforated reflector plate on the tank bottom directly under the transmitter centre line to ensure a satisfactory return echo Avoid mounting the transmitter directly above any pumps in the well as the transmitter will detect the pump casing as the liquid falls away If this is not possible fine tuning on site may be required to ignore echoes from the pump casings If the well is subject to flooding it is advisable to fit the transmitter with a submersion shield Whilst the transmitter will of course stop working whilst covered with liquid the transmit face will be protected from contamination by an air lock inside the shield 3 1 4 Open Channel Flow installations There are normally two distinct parts to an open channel flow measurement system the primary element flow structure and the secondary element Head measurement instrumentation For accurate open channel flow measurement both parts of the system must be installed accurately This manual explains some key aspects of the installation of the secondary element in this case the ultrasonic transducer For full details of the installation of a primary element such as a flume or weir reference should be made to the relevant British BS3680 or International standard In the Unit
12. as the Primary PV secondary SV Tertiary TV and Quaternary QV Variables and are factory set by the manufacturer of the HART transmitter HART compatible programming or control devices are able to read these variables and display them on demand The MSP900SH variables are factory set as follows Primary Variable PV The primary reading from the transmitter normally level but which the user may change by programming of the MSP900SH for example to Contents or Flow Secondary Variable SV Factory fixed to read the level calculated by the MSP900SH Tertiary Variable TV Factory fixed to read distance range to target Quaternary Variable QV Factory fixed to read the temperature recorded by the MSP900SH When being used with an MCU Series control unit these variables are available to view as parameters PV D900 SV D901 TV D902 QV D903 Page 11 Installation Operation amp Maintenance Manual IP2040 IM Rev AA MSP900SH May 2007 6 0 Accessories 6 1 Submersion shield The MSP SUB2 is a tubular shield which slips over the black transmitter front housing This is usually fitted in wet well installations where the liquid level could rise faster than the pumps can pump out As the liquid covers the transmitter an air lock is created in the shield and the transmitter face remains free from contamination 6 2 Head Verification Device The MSP HVD is a combined mounting bracket and verification device for use with the MSP900
13. e To avoid large echo size loss it is recommended that the transmitter never be mounted closer than 300mm to the wall Fatty dirty or viscous liquids can cause a scum line to build up on the tank or well wall Avoid false echoes from this by enabling scum line prevention software in the MCU control unit If the transmitter is mounted in an enclosed tank avoid mounting the transmitter in the centre of the tank roof as this could act as a parabolic reflector and create unwanted echoes If the transmitter is mounted in a stand off or nozzle it is always preferable that the transmitter face be at least 5mm proud of the stand off such that it protrudes beyond the stand off and into the tank Remember that the minimum operating range of the transmitter is 300mm The transmitter will not detect any liquid surface closer than 300mm to the transmitter face Obstructions in the tank or well may generate echoes which can be confused with the real liquid surface echo Obstructions within the beam angle generate strong false echoes wherever possible the transmitter should be positioned such that false echoes are avoided To avoid detecting unwanted objects in the tank or well it is advisable to maintain a distance of at least 0 11m from the centre line of the transmitter for every metre range to the obstruction Installation Operation amp Maintenance Manual IP2040 IM Rev AA MSP900SH May 2007 3 1 1 General considerati
14. ed Kingdom Mobrey Measurement offers a complete installation and commissioning service for open channel flow measurement systems For further information contact the sales office and or refer to Mobrey Measurement s The Guide Positioning of the transmitter is critical and should be the correct distance upstream from the flow structure as stated in BS3680 e g a distance of 4 to 5 times hmax for a thin plate weir or 3 to 4 times hmax for a flume For optimum accuracy the front face of the sensor should be positioned at a height that is at least equal to the maximum flow depth plus the blanking distance of the transducer A minimum distance of 310mm is recommended Page 6 Installation Operation amp Maintenance Manual IP2040 IM Rev AA May 2007 MSP900SH Hmax 09555595560455 5555555555555 5555555555555 I uf T RA Hmax w tuf D D It is important to note that the bottom reference of the transmitter should be related to the centre of the invert of the primary device NOT the distance to the channel bottom directly below the transmitter V Transmitter bottom Flow Channel invert Primary element eg Flume weir invert In addition to the above when setting the bottom reference on a V notch weir it is important that the true invert of the weir is taken and not the meniscus liquid level which may be 3 to 4mm above the true invert NA
15. er power supply it is the responsibility of the user to ensure a suitable Intrinsically Safe barrier is fitted in the safe area The barrier must be chosen such that it s output parameters Uo lo and Po are less than Ui li and Pi of the MSP900SH transmitter For the MSP900SH transmitter Ui 30V li 120mA and Pi 0 82W In addition the sum of the capacitance and the inductance of the transmitter and any extra cable fitted must not exceed the maximum specified for the barrier chosen For the MSP900SH transmitter with 50m of factory fitted cable Ci 5nF and Li 27mH Suitable barriers include the MTL products 706 7065 787 and 7875 3 4 2 Lightning surge protection and other loop devices It is allowable to fit loop powered or separately powered devices in the two wire loop provided that the transmitter receives a minimum voltage of 12V dc at 21 mA loop current It is the responsibility of the user to ensure any loop devices if mounted in the hazardous area carry the requisite hazardous area certification and do not cause the system parameters to exceed those of the safety barrier or MCU900 If the area is prone to lightning strikes or voltage surges fitting of a supressor device is desirable between the transmitter and the control unit 3 5 Wiring to allow HART communication When used with the Mobrey Measurement MCU900 Control Unit there is no need to install an external load resistor in the loop as there is a suitable resis
16. gistered trademark of the HART Communications Foundation and is a mnemonic for Highway Addressable Remote Transducer Page C5 2 Installation Operation amp Maintenance Manual IP2040 IM Rev AA May 2007 MSP900SH 1 0 Introduction The MSP900 ultrasonic level transmitter is designed to be mounted above a liquid and will measure the distance to the liquid surface When programmed with details of the vessel sump or open channel the MSP900 will compute level contents or flow and give a 4 20mA signal proportional to the chosen variable Full programming details are given in the Operating Manual IP2040 OM MSP900 is a two wire 24V dc loop powered transmitter and may be connected to any suitable dc power source using the factory fitted cable The Mobrey Measurement MCU900 range of Control Units is designed to be used with the MSP900 Transmitter in this way The MSP900 transmitter may be mounted in a hazardous area provided that it is supplied from a protected power supply When using the MSP900 transmitter with an MCU900 Control Unit no external Intrinsically Safe Barriers are required as all protection is built in to the MCU900 Control Unit When using any other power supply it is the responsibility of the user to ensure suitable Intrinsically Safe Barriers are installed Full details are given in section 3 4 1 2 0 The MSP900SH ultrasonic level transmitter The transmitte
17. lt Ta lt 60 C Ex ia IIC T6 40 C lt Ta lt 55 C Ex ia IIC T4 40 C Ta 60 C Ex ia IIC T6 40 C Ta 55 C IS IA ABCD T6 Ta 55 C T4 Ta 60 5 ia IIC T6 Ta 55 C T4 Ta 60 Ui 30 V Ui Vmax 30V li 120mA li Imax 120mA Pi 0 82W Pi 0 82W Li 27mH Li 27mH Ci 5nF Ci 5nF The MSP900SH transmitter does not enclose a pressurised volume and therefore is a component and outside the scope of the Pressure Equipment Directive 97 23 EC Accordingly the Declaration of Conformity for the MSP900SH does not list the Pressure Equipment Directive 2 4 Specifications Materials of construction Body Material Cable sealant Locknut Bracket Cable Electrical Supply voltage Output Communications Earthing Cable size Cable length Cable resistance Operating Range Temperature Ambient Wetside Pressure UPVC stabilised Epoxy adhesive Nylon 316 Stainless Steel PVC sheathed two core shielded cable 12 40V dc 12 30V dc Transmitter in Non Hazardous area Transmitter in Hazardous area 4 20mA HART Digital communications Rev 5 None required Overall diameter 4mm two cores each 0 22 mm 3m 20m or 50m 0 1 Ohm per metre length 0 3 to 12m 40 C to 60 C 40 C to 60 C 0 bar to 3 0 bar restricted to 0 1 0 bar for use in Canada Page 4 Installation Operation amp Maintenance Manual IP2040 IM Rev AA MSP900SH May 2007 3 0 Installation x The MSP900SH
18. mA signal proportional to the level in the tank See Section 5 of this manual On the MSP90 control unit Set P39 to 7 This sets the MSP90 control unit to current input mode Set to the value in metres corresponding to the range of the 4 20mA output of the MSP900SH transmitter In a tank or sump of depth 8 5m you will most likely have programmed the MSP900SH to give 4 20mA over the range 0 3m to 8 5m in the MSP90 control unit will therefore need to be set to 8 2 P21 is a parameter which is used to convert level measurement to contents measurement Where the vessel is a simple tank or sump and the readout is required to be level leave P21 set to 0 If it is required to give a readout in contents P21 should be set dependant upon vessel shape refer to the MSP90 controller manual A typical example is given in Appendix 2 of this manual Refer to the manual supplied with the MSP90 Control unit for full programming details of the MSP90 control unit if in any doubt 4 0 Maintenance There is no routine maintenance required for the MSP900SH other than an occasional check to ensure that the front face of the transmitter is clean and that the wiring is in good condition Page 10 Installation Operation amp Maintenance Manual IP2040 IM Rev AA May 2007 MSP900SH 5 0 Commissioning Programming 5 1 Current Output This section gives a very brief overview to allow checking of the installation For full progra
19. may be mounted in a hazardous area provided it is supplied through or from a suitably protected power supply such as the Mobrey Measurement MCU900 Series Refer to the safety parameters given in section 2 2 and safety instruction leaflet IP2040 SI A 71097 1131 U 3 1 Location of the MSP900SH transmitter The transmitter must be installed in a location where it is protected from ultraviolet radiation in order to prevent long term degradation of the plastics used in its construction e g shrouded from 60 C y _ 40 p Q direct sunlight N Correct location of the transmitter is essential for the reliable operation of any ultrasonic level P measurement system Whilst the transmitter may be site tuned to deal with most application conditions it is strongly recommended that the following guidelines should be adopted wherever relevant For maximum accuracy and stability of the level measurement reading the transmitter should always be shrouded from direct sunlight and any radiated heat The transmitter should be mounted as near vertical as possible to ensure a good echo from the liquid surface and maximum echo size received The beam angle to the half power point of the transmitter is 12 degrees inclusive If the transmitter is located near the side of the tank or well there will be no false echo generated provided the wall is smooth and free of protrusions However there will still be a reduction in the echo siz
20. mming details refer to the Operating Manual IP2040 OM When power is applied to the transmitter it will give a 4 20mA signal proportional to level based on some factory set default values for a typical tank Bottom reference depth of tank 12m from transducer face 4mA level 20mA level 11 7m Hence for a liquid surface or other flat target that is 5m away the current on the loop will represent a liquid level of 12m 5m 7m with a value of 13 57mA The user may programme the MSP900SH transmitter with the specific installation details to re range the 4 20mA signal The MSP900SH transmitter is usually connected to a Mobrey Measurement MCU900 control unit which allows access to and changing of the transmitter operating parameters 5 2 HART programming of the MSP900SH transmitter If being used without the MCU900 Control Unit a HART compatible programming device will be necessary see IP2040 OM and the loop must have a load resistor installed The Mobrey Measurement PC software Mobrey DDConf is also available allowing a computer fitted with a HART modem to communicate with and re programme the MSP900SH transmitter Note A HART modem is supplied with the Mobrey DDConf software To further assist the user who has access to a HART programming tool Appendix 1 gives a list of the operating Parameters of the MSP900SH transmitter HART transmitters are able to provide up to 4 Variables in digital format These are known
21. ons The MSP900SH transmitter complies with the European Directive for Electro Magnetic Compatibility EMC Class B It is not advisable to mount the transmitter in close proximity to a source of electrical noise such as a variable speed drive or other high powered electrical device 3 1 2 Liquid surface conditions Foaming liquids can reduce the size of the returned echo as foam is a poor ultrasonic reflector It is always preferable to mount an ultrasonic transmitter over an area of clear liquid such as near the inlet to a tank or well In extreme conditions or where this is not possible the transmitter may be mounted in a vented stilling tube provided that the inside bore of the stilling tube is at least 100 mm and is smooth and free from joints or protrusions It is also preferable that the bottom of the stilling tube does not become uncovered thus preventing the ingress of foams Beware of mounting the transmitter directly over any inlet stream Liquid surface turbulence is not normally a problem unless it is excessive In most cases the effects of turbulence are minor with excessive turbulence being catered for by fine tuning the transmitter on site if necessary 3 1 3 In tank well effects Stirrers or agitators can cause a vortex Always try to mount the transmitter off centre of any vortex to maximise the return echo As stirrer blades become uncovered they will create echoes as they pass through the ultrasonic beam The tr
22. ontrol unit If connected disconnect the existing MSP90 type transducer These terminals are not used with the new MSP900SH type transmitters Connect the MSP900SH screened and twisted pair cable to the current input terminals of the MSP90 Controller as follows MSP900SH wire Wall mount controller type MSP90 11 C Panel mount controller type MSP90 61 C Red Terminal 18 in Loop Power Terminal 18 in Loop Power Black Terminal 14 4 20MA in Terminal 8 Current in Important note when the transmitter is located in a hazardous area If the MSP900SH transmitter is located in a hazardous area it is the responsibility of the user to ensure that a suitable Intrinsically Safe barrier is fitted in the safe area The barrier must be chosen such that it s output parameters Uo lo and Po are less than Ui li and Pi of the MSP900SH transmitter For the MSP900SH transmitter Ui 30V li 120mA and Pi 0 82W In addition the sum of the capacitance and the inductance of the transmitter and any extra cable fitted must not exceed the maximum specified for the barrier chosen For the MSP900SH transmitter with 50m of factory fitted cable Ci 5nF and Li 27uH Suitable barriers include the MTL products 706 7065 787 and 7875 3 6 2 Programming the MSP90 Series control unit to operate with the MSP900SH transmitter The MSP900SH is a transmitter and will need to be programmed to give a 4 20
23. out any aspect of transmitter installation contact Mobrey Measurement Service Division who will be pleased to advise 3 2 Mounting the transmitter above the liquid surface The transmitter is supplied with a purpose made 316 Stainless Steel mounting bracket which should be used to mount the transmitter over the liquid surface The bracket is designed to fit over the 1 threaded neck of the transmitter and is retained by a locknut IMPORTANT Never suspend the transmitter by the cable Use a chain or wire through the hole provided in the bracket which is shaped to ensure that the transmitter will hang perpendicular to the liquid surface Check that the material of the chain or wire is corrosion resistant to the liquids and any vapours present Alternatively the bracket may be bolted to a suitable cross member above the liquid surface Ensure that the transmitter is perpendicular to the liquid surface to maximise the return echo size Check that the maximum liquid level will not encroach into the 0 3m blanking zone of the transmitter Note To aid alignment the echo size signal strength can be displayed on the MCU900 control unit or on a suitable HART compliant handheld Refer to IP2030 OM for full details 3 3 Wiring The transmitter is supplied with a factory fitted length of PVC sheathed two core shielded cable which should be neatly run back to the control unit or a suitable local IP65 junction box The transmitter cable cores are
24. r is a factory sealed unit with an operating range of 0 3m to 12m When powered up the transmitter will give a 4 20mA signal on the two wire power cable over the factory default range 4mA at 12m 20mA at 0 3m This range may be adjusted using a HART programmer See section 5 0 Note full programming instructions are given in the Operating Manual IP2040 OM Fig i A Stainless Steel mounting bracket and 1 thread type G1 1 BSPP A 1 NPT U Nylon locknut are supplied with the transmitter to facilitate mounting 2 1 Type numbering system Mobrey Ultrasonic level transmitter 900 UPVC construction 12m operating range SH Factory sealed transmitter HART communications A ATEX amp CSA certified intrinsically safe for Zone 0 U FM amp CSA certified intrinsically safe for Zone 0 and FM for DIV 1 13 Fitted with 3m two core shielded cable 20 Fitted with 20m two core shielded cable 50 Fitted with 50m two core shielded cable Page 3 MSP900SH Installation Operation amp Maintenance Manual IP2040 IM Rev AA May 2007 2 2 Safety Data Type numbers Certificate numbers ATEX CSA ATEX Coding EU Directive 94 9 EC Cenelec Coding CSA Coding FM Coding Safety parameters 2 3 Pressure Equipment Directive MSP900SH A MSP900SH U BASO1ATEX1061X FM 3021193 1352094X CSA 1352094 II TG EEx ia IIC T4 40 C lt Ta lt 60 C EEx ia IIC T6 40 C lt Ta lt 55 C Ex ia IIC T4 40 C
25. tor built in to the Control Unit If it is intended to use HART digital communications with the MSP900SH transmitter 2500hm 0 25W load resistor must be installed in the loop If the transmitter is being supplied through a safety barrier ensure the type chosen will pass HART SMART information Once installed a HART communicator can be connected across the load resistor or across the loop at any point downstream of the load resistor It is the responsibility of the user to ensure that any HART communicator used in the hazardous area is suitably certified for that area 3 6 Using the MSP900SH transmitter with an MSP90 Series controller Although the MSP900SH transmitter is designed for use with the new MCU900 Series control units there are many thousands of MSP90 Series control units in the field with which it may be used It is important to note that the MSP90 Controller was normally used with an MSP90 style ultrasonic transducer with the controller supplying a voltage pulse to the transmitter and then interpreting and processing the return echo The MSP900 transmitter works in a different way as it performs all processing in the transmitter itself requiring only a loop power connection to the control unit Page 9 Installation Operation amp Maintenance Manual IP2040 IM Rev AA MSP900SH May 2007 3 6 4 Wiring When connecting the MSP900SH transmitter to an MSP90 Series control unit different terminals are used in the c
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