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MULTICAL® 302 

 

Kamstrup A/S · Technical Description · 5512-1334_F1_GB_12.2016

 

67 

 

13

 

 Data communication 

13.1

 

  MULTICAL

 302 Data Protocol 

Internal data communication in MULTICAL

 302 is based on the Kamstrup Meter Protocol (KMP) which provides a fast 

and flexible reading structure and also fulfils future requirements to data reliability. 

The KMP protocol is used in all Kamstrup consumption meters launched from 2006 onwards. The protocol is used for 
the optical eye.  

The KMP protocol has been designed to handle point to point communication in a master/slave system (e.g. a bus 
system) and is used for data reading of Kamstrup energy meters. 

Software and parameter protection 

The meter’s software is implemented in a Flash and cannot be changed, neither deliberately nor by mistake. 
Legal parameters cannot be changed via data communication. 
 

Software conformity 

Software check sum, based on CRC16, is available via data communication and in the display. 
 

Integrity and authenticity of data 

All data parameters include type, measuring unit, scaling factor and CRC16 check sum. 
Every produced meter includes a unique identification number. 
 
Two different formats are used for  communication between master and slave. Either a data frame format or an 
application acknowledgement. 

 

•

 

A request from master to slave is always sent in a data frame  

•

 

The response from the slave can either be sent in a data frame or as an application acknowledgement 

 

The data frame is based on the OSI model using the physical layer, the data link layer and the application layer.  

 

Bytes in each field 

1 

1 

1 

0-? 

2 

1 

Field designation 

Start byte  Destination 

address 

CID 

Data 

CRC 

Stop byte 

OSI – layer 

 

 

Application layer 

 

 

 

Data link layer 

 

Physical layer 

 

The protocol is based on half duplex serial asynchronous communication with the setup: 8 data bits, no parity and 2 
stop bits. The data bit rate is 1200 or 2400 baud. CRC16 is used in both request and response. 

Data is transferred byte for byte in a binary data format, in which the 8 data bits represent one byte of data.  

Byte Stuffing is used to extend the value range.  

 

 

 

 

 

Содержание MULTICAL 302

Страница 1: ...Technical Description MULTICAL 302...

Страница 2: ...MULTICAL 302 2 Kamstrup A S Technical Description 5512 1334_F1_GB_12 2016...

Страница 3: ...view 20 3 6 CONFIG EFGHHMMM 21 4 Dimensioned sketches 23 5 Pressure loss 25 5 1 Calculation of pressure loss 25 6 Installation 26 6 1 Installation requirements 26 6 2 Installation angle of MULTICAL 30...

Страница 4: ...direct sensor 60 10 3 Installation of direct sensor 61 10 4 Blind plug for sensor socket 62 11 Power supply 63 11 1 Built in A cell lithium battery 63 11 2 Built in 2 x A cell lithium battery 63 12 C...

Страница 5: ...CAL 302 Kamstrup A S Technical Description 5512 1334_F1_GB_12 2016 5 16 Approvals 84 16 1 Type approvals 84 16 2 The Measuring Instruments Directive 84 17 Troubleshooting 85 18 Disposal 86 19 Document...

Страница 6: ...site transducer first The time difference between the two signals can be converted into flow velocity and thereby also volume The temperature sensor type is Pt500 according to DS EN 60751 Accurately m...

Страница 7: ...o Description 1 Front cover 8 Meter tube assembly 2 Meter electronics 9 O rings 3 Calculator base 10 Hot brass casing 4 A cell battery 11 O ring for temperature sensor 5 Sealing cover for flow sensor...

Страница 8: ...ls marked LOCK IMPORTANT If the seals have been broken the meter may no longer be used for billing Therefore the case may only be opened by an accredited laboratory with authorisation to reseal the me...

Страница 9: ...the two mechanical locks have been released remove the top cover from the base Reassembling the meter the seals must be re established using 15 x 15 mm void labels Note If the meter is used for billi...

Страница 10: ...sensors Pt500 EN 60 751 2 wire hard wired connection EN 1434 designation Accuracy class 2 and 3 Environmental class A MID designation Mechanical environment Class M2 Electromagnetic environment Class...

Страница 11: ...ission interval 16 s Mode T1 OMS protocol according to EN13757 4 2013 and OMS Specification Volume 2 issue 3 0 1 Individual 128 bit AES encryption Transmission interval 15 min Power of temperature sen...

Страница 12: ...the calculator must be wall mounted in order to prevent condensation At medium temperatures above 90 C in the flow sensor the calculator must be wall mounted in order to prevent too high temperature...

Страница 13: ...ion proof brass CW 602N Stainless steel W no 1 4404 EPDM Thermoplastic PES 30 GF Thermoplastic PES 30 GF and stainless steel W no 1 4306 Flow sensor cover Thermoplastic PC 20 GF Wall bracket Calculato...

Страница 14: ...ICAL 302 typical accuracy Flow sensor Ef 2 0 02 qp q Ef 1 0 01 qp q Calculator Ec 0 5 min Ec 0 15 2 Sensor pair Et 0 5 3 min Et 0 4 4 6 0 4 0 2 0 0 0 2 0 4 0 6 0 0 01 0 10 1 00 10 00 Tol q m h MULTICA...

Страница 15: ...ring unit Resolution Can be changed via the pushbutton while the meter is still in transport state Later the seal I SETUP must be broken and the switch activated in order to change the configuration C...

Страница 16: ...le length 1 5 m and brass union QF Flow sensor qp m3 h Connection Length mm 0 6 G B R 110 10 DN15 With extension to 130 mm 11 With extension to 165 mm 12 1 5 G B R 110 40 DN15 With extension to 130 mm...

Страница 17: ...e g class 2 or 3 dynamic range pressure stage PN16 or PN25 and indicates approval and verification marks Please contact Kamstrup for further details on available country codes Currently available coun...

Страница 18: ...N nipple Copper alloy brass CW602N coupling 3 2 3 2 Gaskets for couplings Article number Size coupling 3130 126 G 3130 127 G1 Material Reinz AFM30 3 2 3 3 Extension pieces Article number Description L...

Страница 19: ...configuration or installation will result in a measuring error Further details on installation of flow sensor in inlet and outlet as far as heat and cooling meters are concerned appear from section 6...

Страница 20: ...either start with E1 E3 or E3 E1 DDD 210 310 410 510 610 are standard codes used by default A complete overview of all created DDD codes appears from Kamstrup document 5512 1256 The different loops ar...

Страница 21: ...a 02 Mode C1 according to EN 13757 16 s interval yearly target data incl E8 and E9 11 Mode C1 according to EN 13757 16 s interval monthly target data incl E8 and E9 12 Mode T1 OMS 900 s interval yearl...

Страница 22: ...12 and DD 1 28 Dep on country code setup Average time of max P and Q 1 1440 min 60 min hc Heat cooling shift Only active with meter type 6 See paragraph 7 4 for functionality 0 01 150 00 C hc 180 00...

Страница 23: ...02 Kamstrup A S Technical Description 5512 1334_F1_GB_12 2016 23 4 Dimensioned sketches Calculator Wall mounted calculator Wall fitting for calculator MULTICAL 302 mounted on flow sensor All measureme...

Страница 24: ...prox weight kg G B R 130 73 30 35 35 40 0 8 G B R 165 109 66 35 35 40 0 8 G1B R 190 124 81 38 38 50 1 0 G1B R 220 154 111 38 38 50 1 1 All measurements in mm The weight indication comprises the whole...

Страница 25: ...1 bar pressure loss m h p pressure loss bar qp Nom diameter p qp Q 0 25 bar m h mm bar m h A 0 6 G3 4B x 110 mm DN15 0 02 4 89 2 4 A 1 5 G3 4B x 110 mm DN15 0 09 4 89 2 4 B 1 5 G1B x 130 mm DN20 0 07...

Страница 26: ...order to prevent cavitation the operating pressure at the flow sensor must be min 1 bar at qp and min 2 bar at qs This applies to temperatures up to approx 80 C See paragraph 6 5 for further informat...

Страница 27: ..._GB_12 2016 27 6 2 Installation angle of MULTICAL 302 Figure 1 Figure 2 MULTICAL 302 can be installed horizontally vertically or at an angle Important MULTICAL 302 can be mounted at 0 horizontal and i...

Страница 28: ...on methods into consideration Figure 3 For general information concerning installation see CEN report DS CEN CR 13582 Heat meter installation Instructions in selection installation and use of heat met...

Страница 29: ...re 4 Threaded meter Mounting of couplings as well as temperature sensor mounted in MULTICAL 302 flow sensor Flow and temperature sensor can be installed in both PN16 and PN25 installations Enclosed co...

Страница 30: ...ug which can be used if the temperature sensor is removed from the flow sensor and e g installed in a sensor pocket is available 6 4 Position of calculator If the flow sensor is mounted in a humid or...

Страница 31: ...ed by a velocity rise in a contraction above the sensor The risk of these factors affecting accuracy is reduced by maintaining a fair pressure in the system In relation to above table the steam pressu...

Страница 32: ...called Tm and the other sensor is called To See examples below Config number A MULTICAL 302 is configured for flow sensor mounted in either inlet or outlet pipe The table below indicates installation...

Страница 33: ...e drawn separately and not parallel to e g power cables or other cables with the risk of inducing electromagnetic interference There must be a distance of min 25 cm between signal cables and other ins...

Страница 34: ...During this sequence water flow is measured at 2 second intervals Inlet and outlet temperatures are measured in the middle of the sequence and at the end of the sequence energy and volume are calcula...

Страница 35: ...scription 5512 1334_F1_GB_12 2016 35 Display loop Mode Measuring sequence Display off Normal mode Type number 302 x xx 1 and 2 32 s Fast mode Type number 302 x xx 3 8 s USER loop Fast mode 8 s TECH lo...

Страница 36: ...e Cooling energy E3 outlet temperature inlet temperature Both in the display and during data reading each energy type is uniquely defined e g Heat energy E1 V1 T1 T2 k Cooling energy E3 V1 T2 T1 k k i...

Страница 37: ...cribed by application examples below 302 Txxxxxx2xx Application A Closed heating system with one flow sensor Heat energy E1 V1 T1 T2 k T1 Inlet or T2 Outlet Flow sensor V1 is placed in inlet or outlet...

Страница 38: ...duct of m3 x T1 E9 m3 x tR E9 is increased by the product of m3 x T2 Resolution of E8 and E9 E8 and E9 depend on the resolution of volume m3 Volume resolution Resolution of E8 and E9 0000 001 m3 m3 x...

Страница 39: ...is only measured if the inlet temperature exceeds a preprogrammed temperature hc and correspondingly that cooling energy is only measured if the inlet temperature is lower than the preprogrammed temp...

Страница 40: ...d in the interval 1 1440 min in one minute leaps 1 440 min 24 hours Average period and target date must be stated in the order or reconfigured by means of METERTOOL HCW Unless otherwise stated in the...

Страница 41: ...tures below 0 C are displayed as 0 00 C and temperatures above 155 C are displayed as 155 00 C When the temperature sensors are outside measuring range Info 8 inlet or Info 4 outlet is set At negative...

Страница 42: ...e increase every 0 01 m3 or 0 001 m3 determined by the meter s configuration The display is updated every day at midnight The average temperatures are thus volume weighted and can be used directly for...

Страница 43: ...y reset 7 7 1 Info code types Info code Description Response time 0 No irregularities 1 Supply voltage has been interrupted 4 Temperature sensor T2 outside measuring range 32 s 8 Temperature sensor T1...

Страница 44: ...has been changed only available in Tech loop Example 4 Info logger If you press the push button once more data logger for information code is displayed only visible in Tech loop First the date of the...

Страница 45: ...t 4 8 Yes Yes When Info 4 or 8 is set or removed 16 2 Yes Yes When Info is set and when Info is deleted 32 Yes Yes At wrong temperature difference 128 Yes Yes Battery voltage below 3 0 VDC 7 7 4 Trans...

Страница 46: ...est one will be overwritten The meter only permits 25 reconfigurations which means that the config logger cannot be overwritten unless the seal is broken 7 8 1 Yearly monthly daily and hourly loggers...

Страница 47: ...rgy Clock hh mm ss Time If the info logger is read from the display the latest 36 changes including dates can be read too All of the 50 changes can be read by means of the PC program LogView HCW 7 8 3...

Страница 48: ...urrent The meter uses four different loops for four different user situations User loop Tech loop Setup loop and Test loop It is only possible to display one loop at a time 8 1 Select display loop By...

Страница 49: ...p is primarily for technicians and other persons who are interested in viewing further data Tech loop displays all legal registers other important registers as well as logged data see paragraph 7 8 fo...

Страница 50: ...n by 2 07 7 1 E8 m3 T1 2 07 01 7 2 E9 m3 T2 2 07 02 8 0 Flow 2 08 8 1 Date of max yearly data 2 08 01 8 2 Max yearly data 2 08 02 8 3 Date of max monthly data 2 08 03 8 4 Max monthly data 2 08 04 9 0...

Страница 51: ...sport state which means that display loop Setup is available Setup loop is selected by activating the button continuously for 9 s until SETUP is displayed The meter remains in Setup loop until the fro...

Страница 52: ...Hour 3 04 5 0 Target date MM DD 3 05 6 0 Flow sensor in Inlet or Outlet code A 3 06 7 0 Measuring unit and resolution code B 3 07 8 0 M Bus primary address No 31 3 08 9 0 Average time of max P and Q...

Страница 53: ...g 3 06 is found by means of the button below the display Inlet If the meter is set to be a inlet meter the text inlet is displayed In order to change the setting press the button for two seconds Setup...

Страница 54: ...les below Example 1 GJ with 2 decimals B 2 This is an example of how the energy reading E1 can appear counted in GJ Example 2 GJ with 3 decimals B 6 Here the most significant digit has disappeared com...

Страница 55: ...s both transmitter and receiver Within ultrasonic flow measuring there are two main principles the transit time method and the Doppler method The Doppler method is based on the frequency change which...

Страница 56: ...wn factors The length which the signal travels can be expressed by V T L which can also be written as V L T where L is the measuring distance V is the sound propagation velocity T is the time 2 1 1 1...

Страница 57: ...off or negative MULTICAL 302does not measure any flow According to EN 1434 the upper flow limit qs is the highest flow at which the flow sensor may operate for short periods of time 1h day 200h year w...

Страница 58: ...908 573 841 575 773 40 577 704 579 635 581 565 583 495 585 424 587 352 589 280 591 207 593 134 595 060 50 596 986 598 911 600 835 602 759 604 682 606 605 608 527 610 448 612 369 614 290 60 616 210 618...

Страница 59: ...be removed Asymmetrical sensor installation one direct sensor and one pocket sensor is only advisable where national regulations allow this and never in systems with low differential temperature and...

Страница 60: ...ck when the coupling has reached the first knurling The coupling must not be pushed further down than the first knurling No matter where the direct sensor is installed it is very important that you ob...

Страница 61: ...direct sensor Use the O ring guide to slide the O ring into place and then push the sensor as far as it will go Fasten the plastic coupling manually The use of tools is not permitted The sensor is mo...

Страница 62: ...sensor socket If the sensors are to be mounted as pocket sensors dismount the temperature sensor which is mounted in the flow sensor and remove the plastic coupling from the sensor Subsequently mount...

Страница 63: ...battery on MC302 11 1 Built in A cell lithium battery The A cell lithium battery is sufficient to power MULTICAL 302 for a 6 year period of operation A cell lithium batteries include 0 96 g lithium e...

Страница 64: ...vals down to 5 minutes halves the battery lifetime We recommend a communication speed of 2400 Baud as the current consumption is higher at a communication speed of 300 Baud The following data can be r...

Страница 65: ...number Version Device type Hour counter Header Manufacturer Id Serial number Version Device type Hour counter Header Manufacturer Id Serial number Version Device type Hour counter Header Manufacturer...

Страница 66: ...low T1 T2 Hour counter Date Info code Current data Cooling energy E3 Volume V1 Power Flow T1 T2 Hour counter Date Info code Current data Heat energy E1 Cooling energy E3 Volume V1 Power Flow T1 T2 Hou...

Страница 67: ...display Integrity and authenticity of data All data parameters include type measuring unit scaling factor and CRC16 check sum Every produced meter includes a unique identification number Two differen...

Страница 68: ...rTemp1 m Month to date average of T1 150 AvrTemp2 m Month to date average of T2 229 AutoIntT1Average T1 average of latest autointegration 230 AutoIntT2Average T2 average of latest autointegration 123...

Страница 69: ...al reading head must be held in place manually during brief data readings In connection with prolonged data readings reading of data loggers or if you want the optical reading head to be retained on t...

Страница 70: ...arate temperature baths is used it is important that the medium in the flow sensor and the temperature bath in which the temperature sensor mounted in the flow sensor is placed have the same temperatu...

Страница 71: ...with a view to the meter s approval and to maintain its protection class 14 1 2 Test loop Test loop includes six different main readings and three different sub readings Test loop Main Test loop Sub I...

Страница 72: ...must be in Test mode 14 2 1 Verification pulses When Pulse Interface type 66 99 143 is connected to power supply or battery the unit is placed on the meter and the meter is in test mode the following...

Страница 73: ...test volume and number of integrations over which the meter is to distribute the volume In MULTICAL 302 the high resolution test registers cannot be separately reset so the test must be based on the...

Страница 74: ...agraph 14 1 1 Verification pulses are connected as described in paragraph 14 2 1 above 14 3 1 4 Flying start stop Condition MULTICAL 302 must be in test mode see paragraph 14 1 1 Verification pulses a...

Страница 75: ...la of EN 1434 1 2007 or OIML R75 2002 For control calculations Kamstrup can supply an energy calculator The true energy at the most frequently used verification points is indicated in the table below...

Страница 76: ...They must be installed under the user login of the person who is to use the programs 15 1 2 Interface The following interfaces can be used Optical eye USB type 6699 099 Optical eye COM port type 6699...

Страница 77: ...liar with the calculator s functions before starting programming The Kamstrup Software product METERTOOL HCW 66 99 724 is used for MULTICAL 302 Before running the program connect your optical readout...

Страница 78: ...e left side of the screen a number of different options are available depending on mode Basic Advanced 15 2 2 Configuration Basic Advanced Mode The configuration of MULTICAL 302 can be read without se...

Страница 79: ...o be replaced after programming After shorting SETUP seal the meter will remain in Setup loop for 4 minutes To extend this period the front button can be pressed which will extend the Setup loop time...

Страница 80: ...igured with Dynamic info codes however the info code disappears when the error has been corrected A Static info code reset does not reset the info code logger 15 2 8 Leave transport state Advanced Mod...

Страница 81: ...tact The contact button gives you the links to Kamstrup s Website and mailbox Output This function shows the latest functions used in the program User manual Links to the user manual for the meter on...

Страница 82: ...4 3 Log Select the required data function Daily Data Monthly Data and Yearly Data allow read out of data logged by MULTICAL 302 with optional data period and values Info Data allows read out of the l...

Страница 83: ...ivating Graph Table toggle function In order to carry out a new data read out you just select a new period and new data registers If the formerly read values are not already saved you will be asked if...

Страница 84: ...cording to MID on the basis of EN 1434 4 2007 and prEN 1434 4 2013 MULTICAL 302 has a national Danish cooling approval TS 27 02 001 16 2 The Measuring Instruments Directive MULTICAL 302 is available w...

Страница 85: ...olume m3 Read info in the display Check the error indicated by the info code see paragraph 7 8 If info 2 Check that the flow direction matches the arrow on the flow sensor If info 4 8 or 12 Check temp...

Страница 86: ...Lithium and thionyl chloride 1 x A cell 0 96 g lithium Approved deposit of lithium cells PCBs in MULTICAL 302 remove LC display Coppered epoxy laminate components soldered on PCB scrap for metal reco...

Страница 87: ...glish German Russian Technical description 5512 1333 5512 1334 5512 1335 5512 1336 Data sheet 5810 1203 5810 1205 5810 1206 5810 1207 Installation and user s guide 5512 1350 5512 1351 5512 1352 5512 1...

Страница 88: ...MULTICAL 302 88 Kamstrup A S Technical Description 5512 1334_F1_GB_12 2016...

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