elf 1.01
Contents
1. la YOY Cycle period 1 average Average supply temp peri O Metrological test 80123 Annex B Displav of data recorded in cvcle 3 and 4 Registration time The data cvcles automaticallv everv 2 seconds Pressing the push button switches to the next registration displav Maximum flow E 7 GT f G 034 308 leD3eH4 ens jem temperature im SUD 1308 ie03cH ka j a2 28 29 30 31 ENVIRONMENTAL NOTICE Do not dispose of with regular waste trash Bring the product to a specialist collection point for disposal Vou will help protect the natural environment vLoz SOO N7I2. see the description of archived data the day of monthly data write cycle 3 01 see the description of archived data the month of annual data write cycle 4 01 see the description of archived data e the pulse output mode configuration available options e fast test output pulse rev e fast output pulse l with the constant dependent on the flow sensor body e the pulse value equal to 1 0 1 or 10 times the lowest heat unit shown on the LCD output disabled 5 3 Archive data Archiving of the heat meter data is fully configurable by the user with the ElfSerwis configuration so ftware see the detailed description in the separate document The user can configure 1 to 4 time cycles of data recording by selecting the number of registrations for each cycle setting 0 means that the given cycle is disabled The PC based configuration software calls the archive configuration function and shows the basic configuration of the registration number Once the required number of registrations per cycle is entered the number of available registrations for lower cycles is automatically corrected which is due to the fixed size of the flash memory archive partition The recording period of cycle 1 and 2 is set by the user in minutes from 15 60 to 1440 24h Cycle 3 and 4 are factory defined as the monthly cycle and the annual cycle respectively The following basic configuration of the archive is factory set cycle 1 no registratio
3. 90 C Flow disturbance resistance 2 UO DO class acc to EN 14154 3 2005 Installation arrangement H V Signal processing constant imp dm 90 50 40 40 32 Backflow no Accuracy class 2 acc to PN Class 2 3 EN 1434 1 2009 arrangement H V Water meter thread diameter G G 3 4 G3 4 G3 4 G1 G1 Water meter length L mm 110 110 110 130 130 Relative humidity lt 100 operation in closed indoor areas Operating temperature range 5 to 90 C Climate low humidity Environment Class A normal electrical and EM exposure levels low mechanical exposure level Mechanical Class M1 Electromagnetic Class E1 Electronic resolver Manufacturer mark APATOR POWOGAZ S A Energy unit selectable GJ kWh or Gcal Display type LCD 7 digits height 7 mm Type of resolver fastening to water end Rotary revolution angle 0 to 360 Transducer electronic circuit Integrated with the resolver electronic circuit Readings cycling One button A Communication modules M Bus Wireless M Bus USB Auxiliary modules R L modules with 4 pulse inputs max and 1 pulse output PNE range limits wg PN EN C Onmin 1 C Ona 105 C Limit MPE E 0 5 AO n AO Temperature sensors PT 500 Power supply Lithium battery 3 6 V 2 1 Ah minimum size AA Umin 3V Battery life lat 5 1 or 10 1 depending on heat meter version Protection class IEC 529 IP
4. Additional pulse input 4 Unique error number which triggered the write State change type 1 start 0 end CRC for the data 12 Total 6 HEAT METER OPERATING GUIDE LCD The heat meter is operated with a single push button and an LCD The push button has two functions short depress cvcles between the successive screens of one menu group long depress enters or exits a menu group If the readings need to be displayed or configured remotelv use the software interfaces and other tools from Apator Powogaz and follow the manuals enclosed with these products The display of data on Elf heat meters is divided into five menu groups which correspond to the func tionalitv of the data actual data group 1 e monthly recording data group 2 annual recording data group 3 service data group 4 test data group 5 The data from recording in cycle 1 and 2 and from failure recording can only be read via the communi cation interface 01 Press the button repeatedly until the desired group number is displayed with messages NEST Oe O E You can switch between the display groups as follows hold the push button for approx 2 seconds until the group number is displayed Release the button Then press and hold again until the first value of the selected group is displayed The successive values in group 1 4 and 5 actual service test are displayed by repeatedly press
5. 7 3 USB interface 8 SHIPPING AND MOUNTING 8 1 Sealing 8 2 Electrical interference 9 WARRANTY AND SERVICE 9 1 Recommendations for end of life 10 MARKING AND ORDERING GUIDELINE 10 1 Ordering the complete heat meter assembly 10 2 Ordering the communication modules 11 ANNEXES 1 SUBJECT This description is intended to present the characteristics parameters and operation of Elf compact heat meters manufactured bv Apator Powogaz The heat meters are intended to meter the heat consumption taken from heat distribution networks bv small loads e g apartments with the heat power rating of 0 3 kW to 850 kW with Building Code compliant treated water as the heating medium The heat meters are manufactured in five sizes for four nominal volume flow sizes The sizes differ in diameter and connection tvpes The heat meter consists of a flow transducer a pair of Pt 500 temperature sensors with wells and an electronic indicator resolver All components form an integrated set for the user i e the complete heat meter The installed sensors are type TOPE42 Pt 500 temperature sensors and butterfly flowmeters without magnetic coupling which must be operated with only one specific type of electronic resolver Elf heat meters are compatible with remote reading interfaces and with up to four additional devices e g a water meter or a gas meter equipped with pulsers The interfaces available are
6. Specific maintenance action is necessary for operation after this period The minimum scope of maintenance is to replace the batteries and reassess the metrological performance The battery must be replaced by a qualified technician it requires breaking the housing seals and sol dering Flow meter handling and disposal requirements are the same as for household water meters 23 10 MARKING AND ORDERING GUIDELINE 10 1 Ordering the complete heat meter assemblv Product code 65 MJPPCIT WWW 65 Elf heat meter M installation location 0 return 1 supply J energy unit 0 GJ 1 kwh 2 Gcal PP transducer type 45 qp 0 6 m h DN15 46 qp 1 0 m h DN15 47 qp 1 5 m h DN15 48 qp 1 5 m h DN20 49 qp 2 5 m h DN20 C medium type 1 hot water 90 C interface type 0 no interface M Bus 4 pulse inputs M Bus 2 pulse inputs 1 pulse output 4 pulse inputs 3 pulse inputs 1 pulse output Wireless 868 MHz AUN T temperature sensor type 7 TOPE 42 1 battery as certified 8 TOPE 42 2 battery as certified WWW Design type 000 Basic MID design 001 Design for DAF Energy Turkey 002 Design for ADUNOS IMS 980 Design for Russia 982 Design for MessTechnik 983 Design for Ukraine 985 Design for GranSystema Belarus Example order code 65 0045107 000 Elf return GJ qP 0 6 m3 h DN15 no interface Basic MID v
7. one Wireless M Bus one M Bus interface which enables connecting 2 additional pulsers and features a pulse output an M Bus for connecting 4 additional pulsers and one M Bus with 4 additional pulser inputs or 3 pulser inputs and one pulse output 2 REGULATORY AND STANDARD COMPLIANCE Directive 2004 22 EC of the European Parliament and of the Council dated 31 March 2004 on measu ring instruments with specific consideration to Annex MI 004 Heat Meters PN EN 1434 Heat meters 6 parts PN EN 61000 Electromagnetic compatibility EMC Parts 2 4 PN EN 13757 Communication systems for meters and remote reading of meters Parts 1 4 3 DESIGN FUNCTIONAL DESCRIPTION amp BASIC CHARACTERISTICS Elf compact heat meters consist of an electronic resolver with a pair of Pt 500 sensors permanently integrated with a butterfly flowmeter The electronic system is located in a small tamper proof enclo sure which prevents access to electronic components and sensors after factory assembly The base of the electronic system enclosure is connected to the flowmeter body with a band clip locked with a wire seal The enclosure base is fastened to the rest of the enclosure with two screws the enclosure is sealed by applying a self adhesive seal made of a special brittle sheet at the enclosure separation line and on the fastening screw head opening The electronic circuit features special pins for a jumper The removal of the jumper disables access to c
8. the user basic operating mode with a minimum battery power consumption 4 BASIC SPECIFICATIONS PThe basic specifications are listed in the table below the maximum error values are listed for both complete heat meter unit and specific measurement components In accordance with PN EN 1434 1 2009 the MPE of the integrated heat meter is the arithmetic sum of errors of all components E 3 0 02 q q 4 AO AO min SA Flow transducer Manufacturer mark APATOR POWOGAZ S A JS90 0 6 JS90 1 JS90 1 5 JS90 1 5 JS90 2 5 Factory mark NI NI NI G1 NI NI Nominal diameter DN 15 15 15 20 20 Minimum volume flow 7 q dm h 6 10 15 15 25 horizontal arrangement H s Mini l fl PSR i q dmh 12 20 30 30 50 vertical arrangement V Nominal volume flow q m3 h 0 6 1 0 1 5 1 5 2 5 Maximum volume flow q m3 h 1 2 2 0 3 0 3 0 5 Starting threshold q dm h 2 5 2 5 4 5 4 5 7 5 Measurement range q q 100 horizontal arrangement H Measurement range q q 50 vertical arrangement V z Limit MPE ka E E 2 0 02 q q horizontal arrangement H p Counter reading range m3 10 Scale interval value dm 1 Maximum permissible bar PS16 operating pressure acc to bar MAP16 PN EN Nominal pressure bar PN16 1434 Maximum pressure loss at d 1 2009 bar AP25 Temperature range limits C Onin 9 1 C to O
9. writing of archive data to non volatile memory is disabled replace the battery in 60 days or following the heating season The codes can be totalled e g Er 12 means that both sensors are damaged Errors are automatically deleted once their cause s have been removed Even one instance of an error is recorded in the archi ve data The incorrect operation time meter is incremented only if the error persists for a whole hour There is a special archive of emergency operation failure states described further in the user manual The device also detects the error which consists in damage of the heat consumption register contents stored in the CPU RAM If this happens the data is reloaded to RAM from the flash memory If loading of data is impossible due to a flash failure or when the battery power is too low below 2 8V a proper message is displayed and the heat meter stops metering Error Lou BAt flash memory corrupt battery voltage too low 5 1 7 Real time The data of the real time clock is updated each second vet its displav is in the service data group The user can modify the data The calendar automatically switches to Polish davlight saving time and back Automatic switching to and from the daylight saving time can also be disabled The RTC is based on a standard 32768 Hz quartz crystal the accuracy of which depends on the ambient temperature Since the heat meter is operated at varying temperatures of as much as 90 C the clo
10. 2 Cvcle 2 record Data tvpe Size in bvtes Record number AMR 4 Year 1 Hour and minutes 2 Day 1 Month 1 Heat 4 Volume 4 Operating time 4 Error operating time 4 Additional pulse input 1 10 Additional pulse input 2 10 Additional pulse input 3 10 Additional pulse input 4 10 CRC for the data 1 Total 66 5 3 3 Monthly and annual cycle record Data type Size in bytes Record number AMR 4 Year 1 Hour 1 Day 1 Month 1 Heat 4 Volume 4 Operating time 4 Error operating time 4 Additional pulse input 1 10 Additional pulse input 2 10 Additional pulse input 3 10 a ln Data tvpe Additional pulse input 4 Size in bvtes o Maximum power per cvcle Minimum power per cvcle Maximum flow per cvcle Minimum flow per cvcle Maximum supply temperature per cycle Minimum supply temperature per cycle Maximum return temperature per cycle Minimum return temperature per cycle NP N N ND N ND ND ND Date and time when these extreme values occur Error code CRC for the data 5 3 4 Emergency failure state archive record Data type Record number AMR Total Year Hour and minutes Day Month Heat Volume Operating time Error operating time Additional pulse input 1 Additional pulse input 2 Additional pulse input 3
11. See the separate operating manual for the instructions for driver installation and commu nication software setup USB module E closure Integrated with the heat meter main enclosure by 2 snap fasteners electrical connection 2x5 pin 2 54 mm matrix Operating temperature range eG 0 55 Power supply 5V DC directly from the USB interface port of the reader Data transmission speed b s 300 to 9600 Communication connector type USB A USB cable length m 1 5 20 8 SHIPPING AND MOUNTING Transport the heat meters oniv on fullv enclosed vehicles and with protection against shifting and da mage Store the heat meters in unit packaging in dry clean indoor areas above 45 C and below 90 of relative humiditv The heat meter can be identified traced bv the markings and technical data loca ted on the enclosure label The shipment addressee should inspect the condition of the parcel before unpacking the heat meter especiallv e the condition of the packaging e completeness of the shipment e the tvpes and versions against the order e the condition of the enclosure and its seals see section 8 1 The heat meters are delivered only as complete units with the sensor pair installed where one sensor is installed in the flow transducer enclosure and the other in the pipe tee installed in the heat pipe The quick user manual must be enclosed with the product Check the heat meter for mechanical damage b
12. is the increment by the lowest possible heat value displayed on the LCD one pulse is 10 times the lowest possible heat value displayed on the LCD Pulse output Heat unit configuration en kWh Gcal 0 1 0 1 MJ pulse 0 01 kWh pulse 0 1 Mcal pulse 1 1 MJ pulse 0 1 kWh pulse 1 Mcal pulse 10 10 MJ pulse 1 kWh pulse 10 Mcal pulse Note The pulses are output though the CMOS gate Proper performance requires galvanically separa ted interfaces from Apator Powogaz Operating the pulse output in the test fast mode the ma ximum frequency of which is 64 Hz will significantly increase the battery power consumption If this operating mode is continuous the battery life is reduced to approx 1 year Note Thepulsegenerationmethoderrorintheenergyorvolume proportionaloperatingmodeis pulse Whenverifyingtheresolverperformancebythetotalofpulsesattheoutput choosetheverificationtime i e the number of pulses to minimise the method error Example The body is 0 6 the operating mode is volume proportional and the flow Qp is 600 dm jh The recommended number of pulses for flow measurement accuracy verification is 500 Here the method error is 1 10 MPE i e 0 2 and the test will take approx 30 seconds 7 2 Wireless interface KEY FEATURES Easy installation and removal Installing the module does not tamper the heat meter verification markings Wireless data transmission Plug amp play system Remote readability
13. the wires are routed outside of the bu ilding use increased protection against electrical interference Detailed information is available from competent Apator Powogaz personnel 9 WARRANTY AND SERVICE The reliable operation of heat meters is guaranteed for 12 months from the commissioning date pro vided that operation will meet the requirements provided in this document The warranty does not include damage caused by improper shipping or operation The users rights from the warranty are void and null if unauthorised persons repair the product without permission of the manufacturer by breaking the seals 22 The warrantv is void and null when the following is found e repairs made by personnel unauthorised to perform warranty service e unauthorised removal of seals e modifications and changes of design installation or operation considered as unintented use in the user manual e mechanical damage to the resolver enclosure Elf heat meters self diagnose by indication of error codes Specific error codes are only displayed during an emergency failure if the error signal cause is removed the error signal will be automatically reset Example water hammering may occur during opening or closing the flow which cause error 32 overflow if the error signal is reset there is no need to call the service In the same way error 2 is normal when the flow is actually isolated however service assistance will be necessary if the err
14. water t1 supply water temperature t2 return water temperature Another value which is called the resolver metrological test is calculated to evaluate the metrological class of the electronic system as a stand alone resolver for the heat meter The calculations of instanta neous water volume flow and instantaneous power are performed in the heat gain calculation period of 8 seconds If not even 1 4 of revolution is detected over that period the instantaneous values will be reset to zero the situation corresponds to actual flows which are at least twice times lower than the minimum values listed in the technical data The electronic resolver allows the user to set the parameter called the averaging period The period 15 to 1440 minutes is used to calculate the average values of flow power and temperatures as well as to save the states of consumption registers including the heat register from the CPU RAM module to non vola tile flash memory Each time a heat consumption gain is added to the main register a special checksum is calculated if an operating disturbance occurs i e when the checksum is changed with an error e g when replacing the battery the consumption data is loaded from the flash memory to RAM If it is not possible to load the consumption data or the configuration data operation is no longer possible which is indicated by a suitable message The resolver determines the maximum and minimum values of flow power and t
15. 440 minutes default 60 of the values of flow power and temperatures and for saving the consumption register states including the heat consumption register from the CPU RAM to the non volatile flash memory the maximum and minimum values are determined with the input of the average values the cycle 2 recording period 60 to 1440 minutes the default is maximum i e 1440 minutes 1 day 24 hrs the minimum differential temperature value for determination of Error 2 10 C see the description of error codes the time to determine Error 2 42 h counted in full hours see the description of error codes the customer user number an eight digit identification number configured by the user the default is the heat meter serial number used for M Bus secondary addressing the pulse constants of additional pulse inputs 1 dm3 pulse available units dm3 pulse or pulse kWh only pulsers rated at below 0 5 Hz are supported higher frequencies require ordering custo mised interfaces the data recording archive configuration see the description of archive data 1 to 4 time cycles can be selected during which data will be recorded it is possible to selected the number of required regi strations for each cycle which is only limited by the flash memory partition dedicated to the archive the serial transmission parameters 2400 bauds parity even the M BUS network address number 01 the hour of monthly data write cycle 3 01
16. A APATOR Apator SA ul Gda ska 4a lok C4 87 100 Toru POLAND e mail apator apator com www apator com Sales Apator Powogaz SA ul K Janickiego 23 25 60 542 Pozna POLAND e mail handel powogaz com pl tel 48 61 8418 133 136 138 148 Compact Heat Meter KM Technical description For firmware versions 1 01 ISO 9001 PN N 18001 ISO 14001 Contents M SUBIEGR enea O b IB i a ta 3 2 REGULATORV AND STANDARD COMPLIANCE 3 DESIGN FUNCTIONAL DESCRIPTION amp BASIC CHARACTERISTICS 4 BASIC SPECIFICATIONS 5 DATA TYPES 5 1 Actual data 5 1 1 Heat consumption 5 1 2 Water volume 5 1 3 Supply and return temperatur 5 1 4 Power and flow zai 5 1 5 PUISG AMPS c O PN a O Od OO Eo A cvsscteds cestunanenaucdvesaeebdetecdvaeenais 8 5 1 6 Error codes 5 1 7 Real time 5 2 Calibration configuration and service data 5 2 1 Metrology specific calibration and configuration data 5 2 2 User c nfigutatl dala uzy tacts sade a PPE ne a a A ak A PY Aaa EA nazz fdin eekiiorEiniEJAZT 9 5 3 Archive data 5 3 2 Cycle 2 record 5 3 3 Monthly and annual cycle record 5 3 4 Emergency failure state archive record 6 HEAT METER OPERATING GUIDE LCD 6 1 Metrological test 7 REMOTE READING OF DATA 7 1 Wired M Bus interfaces and pulse I O interfaces 7 1 2 Interface technical parameters 7 1 3 Operating principle of the M Bus communication interface 7 1 4 Pulse output configuration 7 2 Wireless interface
17. IP54 Ambient temperature t C 5 to 55 Relative humidity w lt 90 Overall dimensions mm 70 x 75 x 80 Weight kg 0 35 Serial baud rate selectable Baud 300 600 1200 2400 4800 9600 Stop bits 1 Data bits 8 Parity Even Odd None Mean current consumption in the operating test operating mode Temperature sensor pair HA 25 100 Manufacturer mark APATOR POWOGAZ S A Thermometer resistor Pt 500 TOPE42 Method of connection with the resolver soldered Temperature measurement range C Onn 90 C Oras 105 C Differential temperature range kie Omn 3 C Opay 104 C Maximum operating pressure MPa 1 6 Maximum measurement current mA 5 Sensor well material steel 1H18N9 Outer well material No outer well Limit MPE E E 0 5 3 AO AO Connection cable spiral PU insulation 2x0 25 mm2 length 2m Overall dimensions mm 70 x 75 x 80 Weight kg 0 35 5 DATA TVPES The measured and calculated data can be divided into two groups actual data which is determined in 8 second intervals except for temperature values in the basic operating mode averaging period data period adjustable by the user displayed in the service data group archive data in up to 4 user configurable cycles configuration service data which can also be adjusted by the user if not metrology specific e test data displayed in the test mode The dat
18. a reading methods are described in the section of the heat meter operating guide The following presents the meaning and interpretation of measured values 5 1 Actual data This is the data from the measurements and from the calculations made with the input of current me asurements The data is updated every 8 seconds except for the temperature data which is updated every 16 seconds and only if the flow is present and displayed as basic data the exception is the real time clock and the metrological test which are service data despite the same update interval 5 1 1 Heat consumption Heat consumption is calculated as shown in Section 3 in one of three selectable energy units e g GJ kWh or Gcal the unit symbol is not displayed The user must select the unit upon ordering since it is not possible to change it once the heat meter has been sealed The heat consumption register is 11 decimal digits long with the least important four digits displayed in the test data group 5 1 2 Water volume Water volume is calculated by totalling very small volume doses per one revolution of the flow trans ducer rotor The revolution measurement resolution is 4 of revolution yet this resolution is only used in the sense of rotation detection Volume is summed only if a full revolution in the proper sense of rotation is detected The revolution value in millilitres varies with the instantaneous rotational speed which in turn is determined by measuring the
19. aking the meter seals The meter calculates the value test following each temperature measurement The best method for evaluating the resolver error is to calculate the average of several e g eight successive readings of the resolver test since a single measurement suffers from a certain statistical fluctuation of approx 40 5 at the minimum differential temperature 7 REMOTE READING OF DATA Elf heat meters feature a connector for communication interfaces which enable remote reading and wri ting of data The connector also enables connection of pulse signals with additional pulse inputs and to output the pulses generated by the heat meter to one of the output interfaces Only interfaces from Apator Powogaz shall be used since they ensure proper support of the heat meter The interfaces are installed on the heat meter without tampering with the heat meter verification markings as shown in the following diagrams Route the wiring for interface connections through proper penetrations to ma intain the declared enclosure protection rating It is recommended to have the interfaces installed by a competent service technician and sealed with the service sticker seal once installed and commissioned L PE zz 15 Wired M Bus interfaces are available for connecting of up to four additional pulse inputs and with one pulse output the pulse I O interfaces with a maximum of four auxiliarv pulse inputs and one pulse output a Wi
20. alibration and configuration of metrological parameters of the heat meter The part of the setup parameters which do not affect the measurement accuracy is adjustable by the user i e the administrator or the technical service The flowmeter rotor features a disk made of an EM immune metal The rotor revolutions are measured by the electronic system with induction coils only connecting the flowmeter to the electronic circuit makes the flow transducer complete addition of the temperature sensor pair completes the compact flowmeter The modern revolution detection method combines excellent metrological performance with resistance to strong magnetic fields The flow transducer system resolution enables detection of as little as 1 4 of rotor revolution moreover the implemented electronic calibration results in a very smooth error chart within the entire range of flow variations The temperature sensors are permanently soldered to the resolver PCB The temperature is measured in 16 second intervals in the basic operating mode when flow is present If there is no flow present the temperature is measured twice in the averaging period cycle 1 duration The heat gain is calculated and added to the total consumption register at an interval of at least 8 seconds only if volume gain occurs in the given period The calculation formula is V2 Q k tl t2 dV V1 Q quantity of consumed heat dV volume of flowing water k temperature coefficient of
21. and increase by 1 after the next write etc If the next registration occurs when the archive is viewed the registration data display will be stopped and restarted by showing the number of maximum registrations for the specific archive group If during the display of data in group 2 or 3 a configuration write of registration cycles is made the display will be stopped and the LCD will revert to group 1 of basic data If the symbol flashes when displaying the actual data an error has occurred and the error code is not zero If gt is displayed there is flow in the direction of counting volume and heat The symbol lt means that the current flow direction is wrong When very small flows occur the direction symbols will appear shortly The symbol 4 means that the jumper is installed and writing of calibration and configuration data is possible The LCD returns to the actual data display and shows the heat consumption in any operating mode if the push button is not operated for ca 3 minutes The annexes feature figures which provide guidance on operating the LCD Annex A shows the display in the basic operating mode of the heat meter with the recording configured to disable monthly and annual registrations Annex B shows the display of monthly and annual registrations provided that they are active and correct If the heat meter is unable to correctly read the configuration or consumption data following battery replacement its operation
22. at a range of up to 100 m IP54 protection rating 19 COMPLETE MODULE ASSEMBLY View from the connection pins side WIRELESS TRANS MITTER MODULE to be installed in the enclosure Wireless module specifications Integrated with the heat meter main enclosure bv 2 snap Enclosure fasteners electrical connection 2x5 pin 2 54 mm matrix Antenna Internal wire type YA Lithium battery 3 6 V 1200 mAh size AA installed in the wireless module enclosure battery life 10 years Power supply Operating temperature range C 0 55 Operating frequency MHz 868 950 Frequency variation kHz lt 2 5 Modulation FSK frequency deviation 50 kHz Transmitter power dBm 10 Receiver sensitivity dBm 105 Mode T1 data transmission period 120 s serial number error flags date heat energv main volume Transmitted registers supplv temperature return temperature last month heat energv 900 s the register refresh interval is the time at which Register refresh rate the wireless module polls the heat meter for the register contents The available module versions are for installation in the enclosure and fully enclosed assemblies 7 3 USB interface The USB communication interface enables quick and easy readouts of data from the meter and to configu re the available parameters The main advantage here is that the interface requires no additional transmis sion converters
23. ck readings can have a significant error of as much as several minutes per month The operating time and the error operating time are counted in hours The error operating time count increases only if an error persists for a whole hour 5 2 Calibration configuration and service data The data is is divided into two categories the data which affects the heat meter measurement accuracy and the data for configuration of operating functions The most critical parameters can be read from the LCD see the operating guide the rest is accessed only via serial communication see the description of the heat meter communication 5 2 1 Metrology specific calibration and configuration data During the manufacturing stage i e prior to closing the enclosure and applying the self adhesive seals the metrological parameters of the heat meter are calibrated and configured A partition of the flash memory is dedicated to this data group as isolated from other stored information and the programming is carried out with the use of the production line stand software When the production of a meter is complete the user of the meter cannot access that data 5 2 2 User configuration data This data can be configured by the user with the use of the ElfSerwis service software The following is a list of this data with their meaning factory default settings are shown in brackets the period of average calculation which is also the cycle 1 recording period 15 to 1
24. efore installation If any damage missing parts or discrepancies against the specifications is found send a claim for the affected unit The product must be installed in the heating system piping by a pro fessional service and according to the design requirements of the building and of PN EN 1434 6 2007 The flow direction shown by the arrow on the flow transducer body must match the actual flow in the metering circuit The heat meter must be installed in the correct pipe supply or return as indicated on the sticker on the enclosure If the heat meter is installed in the supply circuit mount the supply temperature sensor in the flow transducer body and the return sensor in the return line and vice versa i e if the heat meter is in the return circuit install the supply temperature sensor in the supply line and the return sensor in the flow transducer enclosure Seal the heat meter connections on both lines with the same sealing wire threaded through the holes in the threaded connections and through the special lug on the flow transducer body The following figure is an example of installation and sealing of the heat meter on the return line Return ETS Supply ht AD 8 1 Sealing Elf heat meters are sealed with self adhesive seals to prevent unauthorised access to the electronic circuit see the figure below The enclosure base is sealed together with the enclosure
25. emperatures from the values calculated in the averaging period It is possible to record the states of consumption logs and the maximum and minimum values in different time cycles 1 to 4 cycles can be configured with the data wri ting periods of the cycles and the number of recordings for each cycle The heat meter also records failure conditions e g failure of temperature sensors The electronic circuit is powered with a lithium battery or two lithium batteries size AA which guarantee uninterrupted operation for a minimum of 5 or 10 years respectively in normal operating conditions All interfaces this heat meter is compatible with are located in a separate enclosure which can be removed from this product without breaking the seal of the main enclosure Even if empty the interface enclosure must be properly attached to maintain the hermetic seal The heat meter measures the battery voltage under load and if voltage drops below the permissible value 3 V the heat meter issues the applicable error code when voltage drops below 2 7 V the heat meter operation is locked out The heat meter can work in three modes e the calibration mode with the jumper installed changing the calibration parameters or metrological configuration of the heat meter is available only in this mode e the test mode the electronic system operates at a higher power consumption and generates special signals to test the metrological class of the flow transducer
26. ersion 24 10 2 Ordering the communication modules 0949 500 090 Elf interface enclosure empty 0949 500 091 Elf MBUS interface 4 pulse inputs 0949 500 092 Elf MBUS interface 2 pulse inputs 1 pulse output 0949 500 093 Elf MBUS interface 4 pulse inputs 0949 500 094 Elf MBUS interface 3 pulse inputs 1 pulse output 0949 290 045 Elf Wireless 868 interface 0949 500 037 Elf USB interface Each interface is delivered in the enclosure Ordering example 0949 500 091 Elf MBUS interface 4 pulse inputs 25 11 ANNEXES Annex A Displav in the basic operating mode Heat consumption permanent mr uun LCD test Fizsb d AAO Le Pulse Input 1 j nnonn JUL Legend 4 Depress and hold lt Short depress a Automatic Other scenario examples Heat consumption at error uA 99999 Error code no sensors Pulse input item not displayed if the input is deactivated Item not displayed if no error is present Differential temperature on any sensor error LCD test Current date Operating time p in F mM OLLI SIA e924 6 f 308 Calibration pulse constant Firmware version Average power daily L ur BB f EJ d 09 User number BOBO 19 Average flow daily
27. ical coupler at l V 1 Wire insulation voltage rating V gt 500 Maximum wire length in network m 10 Max frequency Hz 64 Minimum pulse duration ms 7 8 Minimum pulse interval ms 7 8 Maximum cross section of supply wires mm lt 1 5 the length can be much shorter under high ambient interferences 18 7 1 3 Operating principle of the M Bus communication interface Once installed the interface of the resolver requires no further configuration settings Install the inter faces on the heat meter before supplving power to the M Bus network then the communication with connected heat meters is enabled The actual data transmitted over M Bus are buffered in the interface The actual data is read from the heat meter when the interface is installed on the device and the M Bus network power is on which in the operating mode is 1 minute after the last poll When the configuration is read written the commu nication is direct with the heat meter 7 1 4 Pulse output configuration Vou can configure six operating states of the pulse output basic state output inactive e pulse per revolution of the flow sensor rotor test mote the pulse value is directly proportional to the volume measured by the flow transducer and the pulse constant depends on the flow sensor heat proportional output available settings see the table below one pulse is a 0 1 increment of the lowest possible heat value displayed on the LCD one pulse
28. ing the button When switched to display the data in group 2 and 3 registered data the displayed values cycle every 2 seconds The first reading is the message with the number of maximum registrations available in the group This message is displayed only once per each access to the data group it does not repeat in cycling Le The displayed number depends on the user configuration If 0 is configured for the given group the group is disabled from recording This reading is followed by a cycled display of successive values in the record at the beginning of each record shows a message which record will be displayed at the given moment and how many records have been registered e g 010 010 the 10th registration the latest out of 10 is displayed Short press of the push button displays the next written record see the screen image below 009 010 the 9th registration the second latest out of 10 13 If the record is corrupted the CRC of the data in the record is incorrect the record number will be displaved alternatelv with the error message Example see below the messages will be displaved alternatelv to alert that the data is incorrect 009 010 Error If the next registration increases the number of registrations above the maximum set bv the user the 4 oldest registrations will be deleted and the new one written Hence the displaved number of re gistrations will decrease by 3
29. is halted and the following message is displayed Error The user can only call the technical service 6 1 Metrological test The value test is the heat quantity kJ per 1 m of water at the given differential temperature lt is used to verify that the resolver works correctly In order to test the meter call the indication test at the given differential temperature calculate the heat energy per 1m of water and then compare the result to the indication Use the heat measurement principle Q V k t1 t2 where Q heat V volume of medium k temperature coefficient of water t1 supply temperature t2 return temperature si The reference heat value per 1 m of the medium is Q0 1 k ftl t2 Example Input data t1 70 C t2 50 C The temperature coefficient for the heat meter supply side calculated acc to EN 1434 1 2009 Annex A k 4 09105 MJ m K Reference heat Q 1 4 09105 70 50 81 821 MJ 81821 kJ Assume that the tested meter shows OT 82000 kJ then the resolver error is E 82000 81821 81821 100 0 22 Compare the obtained error value E to the maximum permissible error values E from the technical data table If at the given differential temperature E lt E then the meter correctly calculates the heat energy quantity The test procedure presented here can be carried out on a working heat energy me tering system without stopping the heat meter or bre
30. n cycle 2 24h 147 registrations cycle 3 month 60 registrations cycle 4 year 12 registrations Saving the selected archive configuration deletes the entire recording memory partition if registrations from group 2 or 3 are displayed their reading is cleared from the LCD and the display returns to group 1 of basic data The data records written in cycle 1 and 2 vary by the average data per period the data records in cycle 3 and 4 are identical The following items of this description present the structure of these data records The data is recorded in cycle 3 and 4 on the day and at the hour set by the user The records of cycle 4 annual are written in the month set by the user Elf heat meters also feature the archive of emergency operation failure states in which the following data record is written when an emergency state occurs or ceases 5 3 1 Cycle 1 record Data type Size in bytes Record number AMR 4 Year 1 Hour and minutes 2 Day 1 Month 1 Heat 4 Volume 4 Operating time 4 Error operating time 4 Additional pulse input 1 10 Additional pulse input 2 10 Additional pulse input 3 10 Additional pulse input 4 10 10 Data tvpe Size in bvtes Average power per cvcle duration 2 Average flow per cvcle duration 2 Average supplv temperature per cvcle duration 2 Average return temperature per cvcle duration 2 CRC for the data 1 Total 74 5 3
31. nclosure Operating temperature C Integrated with the heat meter main enclosur by 2 snap fasteners electrical connection 2x5 pin 2 54 mm matrix 0 55 Power supply M BUS optional Maximum voltage M Bus interfaces are powered bv the transmission lines Maximum interface current consumption mA 2 Wire insulation voltage rating V gt 500 Maximum wire length in network m lt 1000 Maximum no of interfaces in network depending on the permissible converter load Baud rate Baud 300 600 1200 2400 4800 9600 Maximum cross section of supply wires mm lt 1 5 Recommended M Bus cable YnTKSY 1x2x1 0 mm Maximum recommended readout frequ A 900 encv at 2400 bauds 60 the register refresh interval is the time Internal interface register refresh interval s at which M Bus polls the heat meter for the actual register status Pulse input dry contact NO open collector open drain Maximum voltage V 6 Maximum current mA 0 05 Wire insulation voltage rating V gt 500 Maximum wire length m 10 Maximum no of inputs qty 4 2 Max frequency of input pulse Hz 0 5 Input pulse duration ms 625 Input pulse interval ms 625 Maximum cross section of supply wires mm lt 1 5 Reel relay make input impedance kQ lt 10 Reel relay break input impedance Maximum voltage Pulse output optical coupler optional Maximum current mA 10 Voltage drop across opt
32. or code is not reset when the flow is opened since it means a fault of the flow transducer has occured The following table presents the troubleshooting procedures for Elf Problem Cause Remedy LCD blank push button non The battery is dead or Bring the product to the responsive damaged manufacturer technical service The corresponding Bring the product to the Error 4 or 8 persists 3 l p temperature sensor has failed manufacturer technical service The heat provider service must The intake filter of the flow make sure that the supplv pipe is A transducer is clogged or unobstructed and that the sensors The heat meter is suspected ROBA A e of under or overmetering undermetering is caused by have been properly installed if incorrect installation of the both are not correct bring the temperature sensors product to the manufacturer technical service The cut off valve is closed Open the valve The heat provider service must make sure that the supply pipe is Error 2 present The intake filter of the flow not clogged if it is unobstructed transducer is clogged and the error persists bring the product to the manufacturer technical service The temperature sensors have The heat provider technical Error 16 present been interchanged during service must interchange the installation sensor installation 9 1 Recommendations for end of life The water meters are designed for five years of uninterrupted operation
33. reless M Bus interface and an USB interface Interface M Bus Pulse OUT Pulse IN M Bus 4 pulse inputs 4 M Bus 2 pulse inputs 1 pulse output 1 2 4 pulse inputs 4 3 pulse inputs 1 pulse output 1 3 Wireless M Bus USB 7 1 Wired M Bus interfaces and pulse I O interfaces Data reading with the M Bus communication interface is based on the transmission protocol compliant with PN EN 13757 3 2005 and PN EN 1434 3 2009 The implemented protocol enables primary ad dressing with 1 byte network addresses secondary addressing with the 8 digit customer identifier and extended secondary addressing with the serial number The following is the list of data read over M Bus e heat meter serial number customer user number e current date e heat consumption e volume read from flow transducer e readings of counters on four additional pulse inputs as volume or energy in the additional tariff from 1 to 4 in succession NOTE the counter value is not transmitted if its input is deactivated e instantaneous temperatures flow and power error code operating time and error operating time It is possible to remotely read the data records registered as shown in section 5 3 of this description The configuration data reading and saving is only possible with the ElfSerwis software It is possible to remotely set the configuration parameters however some of them require installing the j
34. s signalled by issuing an applicable error code and by displaying a flashing q symbol and the corresponding value in the given temperature menu If the sensor inputs are shorted or the temperature is below range the value of 0 00 C is displayed If the circuit is broken or the temperature is above range the value of 999 99 C is displaved The same values are displaved for the temperature means determined during a temperature measurement error In both cases the displayed differential temperature is 999 99 C which is also indicated with the flashing error symbol The value transmitted to remote reading devices is labelled as a value during error and it is displayed as 999 9 C or 000 0 C 5 1 4 Power and flow Instantaneous flow is determined by measuring the duration of one full revolution of the flow transdu cer rotor The flow calculation accuracy error is below 4 If as low as 4 of revolution is not detected in 8 seconds the flow indication is reset to zero In practical terms it is a flow value which is appro ximately one half of the minimum flow value yet it is higher than the starting threshold for the given flow transducer type Instantaneous power is determined as the product of instantaneous flow and metrological test see section 6 1 5 1 5 Pulse inputs The heat meter can be connected to a maximum of four additional devices equipped with pulsers The user may configure the inputs as volumeters water meters or power me
35. ters It is possible to deactiva te each input by setting the pulse constant to zero If an input is deactivated the meter status for that input is omitted on the display and not transmitted in M Bus frames Only low frequency signals are used however it is possible to order custom interfaces of any type which will convert the signals to compatible pulses Only the interfaces from Apator Powogaz shall be used since they ensure proper interference protection of pulse inputs 5 1 6 Error codes This register is not displayed during correct operation error code 0 an error will be indicated by the flashing symbol A with the error code displayed in the basic data menu The failure states of the measurement system are indicated with the error codes meaning as follows e 2 no pulse from the water meter for 42 hours and AT gt 10 C both parameters hours and 10 C are user adjustable 4 return temperature sensor damaged or temperature outside of range e 8 supply temperature sensor damaged or temperature outside of range e 16 temperature sensors interchanged or negative differential temperature indicated if JATI gt 0 3 C the error is saved to archive data if AT gt differential temperature insensibility value 32 the maximum flow value calculated as the average of C1 period has been exceeded 64 error when writing to flash memory flash failure 128 battery voltage below minimum value 3 0 V
36. time interval between two successive revolutions The calibration of the flow transducer consists in experimental determination of the revolution value at characteristic points of the error curve of the flow transducer followed by recording the value in the electronic circuit memory module This results in a smooth error chart over the entire flow range for each transducer The revolution value is not changed at actual flows which are above the maximum value or below approx one half of the minimum value in this case calibration is inactive The volume is displayed as a value of seven digits with the accuracy of 1 dm litre In order to perform quick metrolo gical tests the heat meter can be switched to the test operating mode and enable the fast pulse output according to the technical data table An additional register of simulated volume is also enabled in the test operating mode see the test mode description 5 1 3 Supply and return temperatures differential temperature The temperature values are determined by measuring the Pt500 sensor resistance The RAM register stores the supply and return temperature values of the medium with the calculated differential tempera ture value Each temperature value is determined down to 0 001 C displayed with the accuracy of 0 01 C and transmitted to remote reading devices with the accuracy of 0 1 C of transmitted data If a failure or overflow of one of the temperature sensors occurs the failure i
37. tionally lower The CPU flash memory stores the number of transmissions sent by the heat meter so it is possible to check the data readout frequency following replacement of the dead battery If the defined transmission number is exceeded in the design operating life of 5 years of the heat meter which is approx 880 000 bytes of U ART transmission for M Bus readouts the manufacturer shall not be liable for premature battery discharge and shutdown of the device The transmission parameter defaults are 2400 8 e 1 network number 1 customer number is the serial number 7 1 1 Interface connection diagram The following diagrams show the sequence of signals on the screw terminals of the interfaces in all available heat meter versions The diagram shows the connection of dry contacts for the pulse inputs Version 1 M BUS 4 pulse IN Version 2 M BUS 2 pulse IN 1 pulse OUT M IN4 M IN2 M IN4 M IN3 M BUS 9 87 6 5 4 3 2 1 Li mu mi mm m um mi mu where INT IN2 IN3 IN4 are the pulse input terminals M are the pulse input terminals connected to the interface common M BUS is the I O for connection with the M Bus line any wiring connection sequence is allowed NPN transistor symbol is the pulse output NC is spare i e not used in the given module version 17s 7 1 2 Interface technical parameters The table below shows the technical parameters of individual interface blocks Interface parameters E
38. umper which enables the service mode The following are the parameters changed with the jumper installed e full metrological configuration selection of flow sensor type and its calibration e calibration of the resolver with the temperature sensors as the reference e selection of supply return e selection of GJ kWh Gcal e setting the initial value resetting of the heat consumption meter e differential temperature insensibility The list of parameters which can be set remotely without the jumper e setting the initial values resetting of all pulse inputs operating time error operating time and volu me counter pulse constants for all auxiliary inputs 16 e quantitative configuration of recording archives e setting the average calculation periods recording cycle 1 and of recording cycle 2 pulse output configuration e parameters of error 2 detection no flow at high differential temperature e setting the unique customer user number transmission number and baud rate requires respective changes in the user PC e selection of hours days of month and months of year for recording Note on readout frequency and default transmission settings Transmission of data from Elf increases consumption of the battery power If readout frequency is higher 15 minutes the battery life may be shorter This applies only for the default baud rate of 2400 if a lower baud rate is selected the readout frequency is propor
39. with a sealing wire threaded through the holes in the band clip Once closed the complete enclosure is sealed with stickers made of a special film which brittles when peeled The seals are located on the fastening screw and on the mating line between the base and the housing body The interface body is also sealed with a sticker see section 7 and the respective figure The technical se rvice of the user is allowed to remove the sticker when installing the interfaces Once the interfaces have been commissioned it is recommended to apply a service seal or an Apator Powogaz branded sticker Seal the heat meter connections on both lines with the same sealing wire threaded through the holes in the threaded connections and through the special lug on the flow transducer body see the figure in the previous section il 8 2 Electrical interference Elf heat meters do not require special electrical interference protection however electromagnetic inter ference must be avoided The sensor wiring must not lay directly at power cables or other high power electrical devices Do not cut extend or shorten the wires of measurement sensors The wiring of additional pulse inputs must be as short as possible the wire length of passive pulsers dry with open collector must not exceed 10 m if extension is necessary make it with an additional terminal strip located in a junction box If transmission network interfaces are used especially when
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