Endress+Hauser Prothermo NMT81 Operating Instructions Manual Download Page 79

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Prothermo NMT81

Operation

Hauser

Element weighting

By enabling the element weighting, the average temperature calculation can be adapted to

different tank shapes. If Disable is selected, the element weighting function is turned off.

A0044836

 80

Element weighting screen

Average temperature calculation
The following formulas/calculation methods are used to calculate the different average

temperatures:
• Average vapor temperature

• Average liquid temperature

• Average product temperature

• Average water temperature
The formula of the element weighting shows as follows.

average =

* T

+ W

* T

ElementA

ElementB

ElementZ

...

+ W

ElementA

ElementB

ElementZ

...

A0044838

Summary of Contents for Prothermo NMT81

Page 1: ...Products Solutions Services Operating Instructions Prothermo NMT81 Tank Gauging BA02094G 00 EN 01 21 71517024 2021 06 08 Valid as of version 01 00 00 zz Device firmware...

Page 2: ...Prothermo NMT81 2 Endress Hauser Order code Ext ord cd Ser no www endress com deviceviewer Endress Hauser Operations App XXXXXXXXXXXX XXXXX XXXXXX XXX XXXX XX Serial number 1 3 2 A0023555...

Page 3: ...transmitter and element connection 38 6 3 NMS8x NMR8x NRF81 Ex d ia intrinsically safe connection 38 6 4 NMS5 Ex d ia intrinsically safe connection 39 6 5 NRF590 terminals 40 6 6 Mechanical connection...

Page 4: ...Table of contents Prothermo NMT81 4 Endress Hauser 14 Accessories 105 14 1 Device specific accessories 105 Index 110...

Page 5: ...serious or fatal injury CAUTION This symbol alerts you to a dangerous situation Failure to avoid this situation can result in minor or medium injury NOTICE This symbol contains information on procedu...

Page 6: ...res processes or actions that are preferred Forbidden Procedures processes or actions that are forbidden Tip Indicates additional information Reference to documentation Reference to graphic Notice or...

Page 7: ...rom incoming acceptance to initial commissioning 1 3 3 Operating Instructions BA The Operating Instructions contain all the information that is required in various phases of the life cycle of the devi...

Page 8: ...About this document Prothermo NMT81 8 Endress Hauser 1 4 Registered trademarks FieldCare Registered trademark of the Endress Hauser Process Solutions AG Reinach Switzerland...

Page 9: ...to process pressure are labeled accordingly on the nameplate To ensure that the measuring device remains in proper condition for the operation time Only use the measuring device in full compliance wit...

Page 10: ...he hazardous area e g explosion protection pressure vessel safety Based on the nameplate check whether the ordered device is permitted for the intended use in the hazardous area Observe the specificat...

Page 11: ...emperature dependent resistance NMT81 converter temperature probe version conforms to intrinsic safety standards and because NMT81 consumes very little power it guarantees superior safety as an electr...

Page 12: ...easuring device Nameplate specifications Extended order code with breakdown of the device features on the delivery note Enter serial numbers from nameplates in W M Device Viewer www endress com device...

Page 13: ...entry standard 15 Device revision 16 Ingress protection 17 Additional information of the device version 18 PTB certification number for PTB approval type 19 Manufacturing date 20 Certificate symbol 2...

Page 14: ...tandard G3 4 NPT 3 4 universal coupling connection Unit of measurement mm in 1 G 1 2 dummy plug 2 G 3 4 thread 5 2 1 Option 1 Measurement functions Because the software in the converter is equipped wi...

Page 15: ...NRF590 through a two wire local HART loop connection NMT81 can be configured and operated using FieldCare which has a user friendly interface 5 3 Option 2 Converter with M20 mounting thread This opti...

Page 16: ...180 7 09 100 9 3 97 d 1 2 3 1 A 1 B 100 9 3 97 a 182 3 7 18 c 19 5 0 77 27 2 1 07 d 1 2 A0042769 6 Converter average temperature probe Unit of measurement mm in A Adjustable flange B Welded flange a...

Page 17: ...18 c 19 5 0 77 d 3 4 5 6 6 1 2 1 2 5 A0042767 7 Converter temperature probe WB probe Unit of measurement mm in A Adjustable flange B Welded flange a Converter height b Adjustable installation height...

Page 18: ...e The position of the flange cannot be adjusted in a welding flange type Probe length Tolerance of probe and element positions 1000 to 25000 mm 39 37 to 984 25 in 50 mm 1 97 in 25001 to 40000 mm 984 2...

Page 19: ...completely welded together However the position of welded flanges cannot be adjusted 100 9 3 97 182 3 7 18 96 9 3 81 1 A0042770 8 Welded flange Unit of measurement mm in 1 Flange JIS ASME JPI DIN 96...

Page 20: ...lange All other elements are mounted at a spacing determined by following formula Element spacing 100 mm 3 94 in 315 mm 12 40 in number of measuring points 1 a 400 15 75 a 200 7 87 100 b 3 94 085 A B...

Page 21: ...ments can be set inside this electrode This allows for constant and accurate temperature measurement regardless of whether or not there is water Precise initial calibration of NMT81 is performed in ac...

Page 22: ...from NMS8x or NMR8x NMT81 also eliminates the influenced dielectric difference with this compensation result so that the water bottom WB maintains high probe accuracy and stable measurement A B C a b...

Page 23: ...NMT81 5 9 2 Temperature probe handling Do not pull the converter while holding onto the temperature probe This may cause the device to malfunction A0042788 15 Temperature probe handling When winding t...

Page 24: ...not available for the welded flange type and the converter only version 5 10 Installation procedure The length of the NMT81 probe is predetermined by the customer Check the following items before ins...

Page 25: ...the tank s ambient or wall temperature 1 1 1 A0026889 17 Allowable inclination of mounting flange 1 Nozzle Insert the temperature probe and the optional WB probe and low profile anchor weight through...

Page 26: ...ion of NMT81 4 Tighten the hexagonal socket set screws securely Tightening torque 60 Nm 5 Tighten the bush Tightening torque 4 Nm 1 2 3 A0044610 19 Height adjust type of NMT81 1 Flange 2 Hexagonal soc...

Page 27: ...ling a WB probe check zero point reference position on the WB probe by comparing it to a manual dipping reference There are three ways to install NMT81 onto a cone roof tank Top anchor method Stilling...

Page 28: ...the tank bottom to the probe bottom c Tank height 1 Converter electrical compartment 2 Flange 3 Highest temperature element 4 Temperature probe 5 WB probe 6 Element position 1 lowest element 7 Zero po...

Page 29: ...ng wire 5 Secure the tension wire to the top anchor while drawing it by holding it down with a foot or a hand 6 Wrap the end of the tension wire once around the top anchor s axis and tighten it using...

Page 30: ...ow the bottom of the stilling well This will allow the pipe to be filled with liquid 42 1 65 1 150 5 90 150 5 90 2 1 300 11 81 3 A0042754 24 Stilling well Unit of measurement mm in 1 Stilling well 2 H...

Page 31: ...weight high profile 7 Temperature probe 8 Anchor weight low profile LCAUTION Installation of an anchor weight Using an anchor weight that is heavier than 6 kg 13 23 lb may cause internal damage to th...

Page 32: ...erature probe 2 Bottom hook 3 Provided securing wire 4 Anchor weight high profile 5 Anchor weight low profile 5 12 Mounting NMT81 on a floating roof tank There are three ways to mount NMT81 on to a fl...

Page 33: ...69 39 37 a 500 19 69 100 150 3 94 5 90 b 400 15 75 18 2 0 72 42 1 65 27 2 1 07 A0042758 27 Top anchor method Unit of measurement mm in a Distance between the base plate and the bottom element b Distan...

Page 34: ...well that is 50A 2 or larger 150 5 90 150 5 90 300 11 81 500 1000 19 69 39 37 1 2 3 4 20 0 79 300 11 81 1 5 A0042759 28 Stilling well method Unit of measurement mm in 1 Stilling well 2 Fixed pipe 3 Fi...

Page 35: ...A 1 B A0042760 29 Guide ring and anchor weight method Unit of measurement mm in A Without WB probe B With WB probe 1 Converter electrical compartment 2 Flange 3 Top element 4 WB probe 5 Temperature pr...

Page 36: ...Ball valve 3 Measuring wire 4 Displacer 5 Stilling well 6 Maintenance chamber 7 NMT81 8 Thermowell If the pressure inside a tank exceeds the pressure limit install a thermowell with no holes or slits...

Page 37: ...minal for the cable shield 5 External ground terminal 6 Shielded twisted pair wire or steel armored wire Only a metal cable gland may be used The shielded wire on the HART communication line must be g...

Page 38: ...A0042780 33 Four wire connection diagram A Sensor unit a Current flow b Voltage measurement 1 Connector 1 2 Connector 2 3 Connector 3 4 Connector 4 6 3 NMS8x NMR8x NRF81 Ex d ia intrinsically safe con...

Page 39: ...20 21 COM HOIST STOP e f 22 23 24 25 26 g h i A0038529 35 NMS5 terminal a Power supply b Non intrinsically safe HART communication NRF etc c Digital output Modbus RS485 serial pulse or HART d Alarm c...

Page 40: ...D S S D OPT1 OPT2 OPT3 OPT4 H H H P 4 3 2 1 A C B A0038533 36 NRF590 intrinsically safe terminals A HART sensor mutually connected as a single HART fieldbus loop on the inside B Fieldbus loop C Only...

Page 41: ...installing NMT81 bundle all RTD cables from a temperature probe temporarily using a zip tie or a short string so that the cables do not become damaged during the mechanical connection process 1 2 2 3...

Page 42: ...pe 2 Screw on the union to the G3 4 thread connection part and make sure that it is secure 3 Wrap the male thread connector with sealing tape 4 Insert the packing in the union and install NMT81 5 Tigh...

Page 43: ...he element numbers see the following figure A0044594 39 Terminal connectors for temperature elements 1 Element 1 to 6 Common wire 2 Element 7 to 12 Common wire 3 Element 13 to 18 Common wire 4 Element...

Page 44: ...al 1 4 Crimp the connected terminal with a crimp tool a plier or any other connection tools This completes the procedure for connecting temperature signal wires If there are special handling requireme...

Page 45: ...to PC Reads parameters which have been saved from devices and applies for device settings Exports the parameters which have been set in the device Diagnostics Active diagnostics Contains Active diagn...

Page 46: ...rall system which are not specific to the measuring path like measuring point name configuration counter define welcome page reset e g factory settings User management Contains the complete settings o...

Page 47: ...t connect directly to the NMT81 7 4 Display of NMT81 The device has an illuminated liquid crystal display LCD option that shows measured values The following shows standard view of NMT81 and meanings...

Page 48: ...y 1 2 3 4 5 6 7 Display 8 on off 8x 53x II I Mode A0044297 44 Electrical module 1 Housing cover 2 Display option 3 Main board 4 Display connector 5 DIP switches 6 Operating keys 7 FieldCare connector...

Page 49: ...the key symbol appears on the local display If operation is locked by means of the DIP switch the operation is only unlocked again by means of DIP switch 1 Unscrew the housing cover 2 Set the write p...

Page 50: ...Setting level value a to unit Metric mm procedure a Display on off 8x 53x II I Mode 1 2 A0044298 47 Level setting a End of probe to zero distance 1 Key I 2 Key II 1 Press and hold the I key 1 for 3 s...

Page 51: ...l setting a End of probe to zero distance 1 Key I 2 Key II 1 Press and hold II key 2 for 3 seconds All digits on the display are blinking The inch unit in is displayed 2 Push the I key to increase the...

Page 52: ...r not all NRF590 are fully compatible for recognizing NMT81 Contact your Endress Hauser Sales Center for information on NRF590 software and hardware version compatibility 7 6 2 Parameters of NMS5 NMS7...

Page 53: ...liquid Additional information Read access Operator Write access When obtaining data of liquid temperature via NMT81 Navigate Setup Advanced setup Application Tank configuration Temperature Liquid temp...

Page 54: ...options or device settings Water level source Item Details Navigation Setup Advanced setup Application Tank configuration Level Water level source Description Defines the source of the bottom water le...

Page 55: ...ement setup Select element Zero adjust Element temperature Element position Configure device Item Details Navigation Expert Input Output HART Device HART device s MenuName HART device configuration Co...

Page 56: ...nal information Read access Operator Write access Maintenance NMT8NoElementInPhase Item Details Navigation Expert Input Output HART device HART device s NMT device configuration Element configuration...

Page 57: ...tion Zero adjust 14735 Description Adjusts the offset of the selected element Input unit Numerical value Factory setting 0 None Additional information Read access Operator Write access Maintenance Ele...

Page 58: ...1 FXA195 HART model 3 Computer with FieldCare operating tool and CDI Communication FXA291 or FXA195 HART model COM DTM The Save Restore function After a device configuration has been saved to a comput...

Page 59: ...s HART and CDI Communications of the Prothermo NMT8x If the CDI connection is available it is recommended to install it because connection speed helps the operation of DTM to be smoother 4 A0044583 51...

Page 60: ...d to the device variables at the factory Device variable Measured value Primary variable PV 1 Liquid temperature Product temperature Water temperature Secondary variable SV Vapor temperature Tertiary...

Page 61: ...MT81 installation 1 Liquid temperature 2 Vapor temperature 3 Product temperature 4 Water temperature 5 Minimum height above tank level uncovered 6 Minimum depth below tank level covered 7 Minimum heig...

Page 62: ...e is English for NMT81 9 3 Initial screen This section briefly describes the categories of items and their content and operations For further details of each description refer to the following section...

Page 63: ...play area above For the category of PV and QV the desired items to be displayed in the upper or lower view area can be selected via the Output settings part of the commissioning procedure For the cate...

Page 64: ...listed in the operating instructions 9 4 1 Commissioning Commissioning means to perform the initial settings for measurement When the DTM is opened for the first time commissioning of NMT81 will be r...

Page 65: ...ptor are correct and select Next A0044589 57 Device identification screen 2 4 Select a unit of the temperature measurement C F and K and a unit of the distance mm cm m in and ft A0044590 58 Measuremen...

Page 66: ...ning Prothermo NMT81 66 Endress Hauser 5 Set the following five values For details of each value 76 A0045249 59 Measurement adjustments screen 2 6 Select Next 7 Set the following values A0045256 8 Sel...

Page 67: ...s screen The items selected in this screen will be shown at the upper or lower view area on the initial screen for details 76 10 Select Finish to be completed A0044592 61 Complete screen This complete...

Page 68: ...e device 3 Press Save as 4 Specify the saving destination 5 Input a file name 6 Press Save deh file format is created This completes the saving procedure Restore Information saved on a PC is sent to N...

Page 69: ...items in the Documentation window The default setting has every item checked 3 Press Save as 4 Specify the saving destination 5 Input a file name 6 Press Save The PDF file format is created This comp...

Page 70: ...mparing datasets procedure 1 Press Compare datasets 2 Select a mode as the list above 3 Check Show only differences if necessary 4 Press Compare The comparison analysis starts and the result is shown...

Page 71: ...mode in which it operates as an NMT53x but limited to basic functions When the NMT53x mode is selected the device can be connected to FieldCare by switching to the NMT81 mode by using the dip switch...

Page 72: ...te items to be set or confirmed This section describes setting procedure in sequence from the top For further information of parameters refer to the Description of Device Parameters manual A0044822 67...

Page 73: ...emperatures levels and the other items show appropriate values 72 Liquid temperature 73 Vapor temperature 74 Product temperature 75 Water temperature 76 Water level 77 Tank level Test resistance Termi...

Page 74: ...nt temperature Element resistance Element resistance shows each element resistance and position Confirm each resistance shows appropriate values A0044826 71 Element resistance screen Elements in vapor...

Page 75: ...ture All elements are in the tank level Defective elements will be skipped 78 Elements in liquid 81 Elements in water 82 n 83 79 80 81 78 3 83 2 83 1 83 65 0mm A0044824 72 Element temperature 10 2 2 M...

Page 76: ...llows A0044829 75 General settings screen Sensor module type Can be confirmed according to your specifications Number of temperature elements Can be confirmed according to your specifications Element...

Page 77: ...urces screen External Receives the level data via an external device Manual Sets an optional value for the level When a WB test is required for any reason the Manual mode is used 1 Select Manual mode...

Page 78: ...istance from the water level for determining whether an element above the water level is to be included in the average of the product temperature Setting range 0 0000 to 999 9999 69 Distance water lev...

Page 79: ...44836 80 Element weighting screen Average temperature calculation The following formulas calculation methods are used to calculate the different average temperatures Average vapor temperature Average...

Page 80: ...emperature 1 T5 Element No 5 4 5 C 40 1 F 2 T4 Element No 4 4 0 C 39 2 F 3 T3 Element No 3 2 0 C 35 6 F 4 T2 Element No 2 3 0 C 37 4 F 5 T1 Element No 1 3 5 C 38 3 F Advanced calculation method with w...

Page 81: ...t No 1 3 5 C 38 3 F Element settings Element settings has three items as follows A0044830 83 Element settings screen Element type The element type has three items to be set or confirmed as follows Ele...

Page 82: ...positions fit to the level in the tank Setting range 99999 9900 to 99999 9900 82 Element position Can be confirmed according to your specifications Setting range 99999 9900 to 99999 9900 The absolute...

Page 83: ...automatically show proper unit A0044832 86 Element offsets screen Disable Inactivates the offset values Enable Activates the offset values Temperature limit The range of the Temperature limit corresp...

Page 84: ...ror event occurs Water bottom settings The water bottom probe length Shows the actual length of the probe 71 Water level offset Defines the offset value of the water level Setting range 100 to 100 m 3...

Page 85: ...o 63 HART short tag Defines the name of the device to identify the device easily in the master device Allowed characters type 8 characters with A to Z 0 to 9 and certain special characters Device tag...

Page 86: ...gure SV stands for Second dynamic Variable TV stands for Tertiary dynamic Variable QV stands for Quaternary Variable Assign QV from the pull down menu as shown in the following figure A0044916 91 HART...

Page 87: ...characters type 32 characters with A to Z 0 to 9 and certain special characters HART date code Defines the last date of the configuration change Allowed characters type 10 characters with 0 to 9 yyyy...

Page 88: ...he device is temporarily locked by some process e g reset factory default or restart device The device will be unlocked after completion of the process Configuration counter Shows the counter for chan...

Page 89: ...the Maintenance option user role Afterwards access to the configuration can be locked by assigning a password The Maintenance option switches to the Operator option as a result of the locking The con...

Page 90: ...ed for Value 1 or Value 2 each parameter is identified and displayed in the appropriate units A0044922 96 Display screen The pull down menus are the same for Values 2 3 and 4 and Decimal places 2 10 3...

Page 91: ...ngitude Latitude and Altitude Defines the detailed locations where the device is Longitude setting range 180 0000 to 180 0000 Latitude setting range 90 0000 to 90 0000 Altitude setting range 3E 38 to...

Page 92: ...11 2 Diagnostic event 11 2 1 Diagnostic event in the operating tool If a diagnostic event is present in the device the status signal appears in the top left status area of the operating tool along wi...

Page 93: ...able is not connected correctly Connect the plug correctly Display is defective Replace display Communication error is indicated on the display when starting the device or connecting the display Elect...

Page 94: ...e 1 Transfer data or reset device 2 Contact service F Alarm 281 Electronic initialization active Firmware update active please wait F Alarm 282 Data storage inconsistent 1 Restart device 2 Contact ser...

Page 95: ...eck process temperature S Warning 969 No element in phase 1 Check device configuration 2 Check water and tank level M Warning 1 973 Level invalid 1 Check level source setting 2 Check connected level d...

Page 96: ...ectronic initialization active 42 Memory defect EEROM F 805 Loop current faulty 42 Memory defect EEROM F 410 Data transfer failed 42 Memory defect EEROM F 484 Failure mode simulation active 42 Memory...

Page 97: ...nostics parameter with a time stamp Event logbook The events are saved in the event logbook Navigation Diagnostics menu Event logbook 11 3 Diagnostics Diagnostics has seven items to be set or confirme...

Page 98: ...d or is still occurring Timestamp Displays the cumulative operating time when the previous diagnostic message occurred Operating time from restart Shows the time elapsed since the last time the power...

Page 99: ...mum and maximum values displayed here are the observed values from the start of operation to the present Electronics The following minimum and maximum terminal voltages can be confirmed from the Elect...

Page 100: ...n pull down menu Normally set to Off A0045019 104 Simulation screen Current output Sets current output to other than 4 mA Diagnostic event simulation Selects the error code to verify how the output ap...

Page 101: ...whether or not recognize an error when no elements are in any of the phases A0045021 106 Configuration screen 11 3 6 Sensor diagnostics Sensor diagnostics has two items to be confirmed as follows Ope...

Page 102: ...ning the exterior of measuring devices always use cleaning agents that do not attack the surface of the housing or the seals 12 2 Endress Hauser services Endress Hauser offers a wide variety of servic...

Page 103: ...rts from Endress Hauser When ordering a spare part please note the device designation on the nameplate Only replace parts with identical parts Carry out repairs according to the instructions On comple...

Page 104: ...available users can also download the associated Installation Instructions 13 3 Endress Hauser services Endress Hauser offers a wide range of services Your Endress Hauser Sales Center can provide deta...

Page 105: ...4 9 03 136 7 5 38 65 2 56 A0039231 109 Weather protection cover Unit of measurement mm in Materials Part Material Protection cover and mounting brackets stainless steel 316L The weather protection co...

Page 106: ...easurement position will be set at approx 500 mm 19 69 in above the tank bottom When installing a high profile anchor weight from a nozzle at the top of the tank ensure that the nozzle opening is at l...

Page 107: ...e accurately It can be also used as an installation attachment for the converter temperature probe version when trying to install it in a small tank nozzle e g 50A 2 630 2 24 8 0 08 663 5 5 26 1 0 2 3...

Page 108: ...96 85 70 229 66 80 262 47 90 295 28 100 328 1 600 800 1000 400 1200 1400 1600 1800 2000 Unit of density kg m Unit of length m Range for requirement of advance inquiry Range for standard use A0044243 E...

Page 109: ...S400 mild carbon steel Weight 1 5 kg 3 31 lb 14 1 6 Top anchor The standard threaded connection for a top anchor is an R1 threaded connection 190 7 48 52 2 05 a A0038538 114 Top anchor dimensions Unit...

Page 110: ...operating tool 92 Disposal 104 Document Function 5 Document function 5 E Endress Hauser services Maintenance 102 Repair 104 Exterior cleaning 102 M Maintenance 102 Measured materials 9 O Operational s...

Page 111: ......

Page 112: ...www addresses endress com 71517024 71517024...

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