Elster EK220 Operating instructions

EK220
Volume Conversion Device EK220
OperatingInstructionsandInstallationInformation
OperatingManual: 73020052 SWVersion: fromV1.20
Issued 01.09.2008 (b) Edition: 1

Volume Conversion Device EK220
2 © Elster GmbH

Volume Conversion Device EK220
© ElsterGmbH 3
All rights reserved.
Copyright © 2008 ElsterGmbH, D-55252 Mainz-Kastel
All thefigures anddescriptions inthisoperating andinstruction manualhave been com-
piled onlyaftercarefulchecking. Despitethishowever, the possibility of errors cannot be
completelyeliminated. Therefore, no guarantee can be given forcompleteness or for the
content. Also, the manualcannot be takenas giving assurancewith regard to product
characteristics. Furthermore, characteristics are also described initthatare onlyavailable
as options.
The right isreserved tomake changes inthecourse of technicaldevelopment. Wewould
be very grateful for suggestions for improvement and notification of any errors, etc.
Withregardtoextendedproduct liabilitythedata andmaterial characteristics given
shouldonlybetakenas guidevalues andmust alwaysbeindividuallycheckedand
correctedwhereapplicable. This particularlyapplies wheresafetyaspectsmust be
takenintoaccount.
Further support isavailablefromyour local branch office /agent. The addresses are avail -
ableon theinternet or fromElster GmbH.
Passing thismanualto third parties and its duplication, in full orinpart, areonlyallowed
with written permission fromElster GmbH.
The guaranteebecomes invalidifthe productdescribed here isnothandledproperly, re-
paired or modified by unauthorised persons orifreplacement parts which are n ot genuine
parts fromElster GmbH are used.
Mainz-Kastel, September 2008

Volume Conversion Device EK220
4 © Elster GmbH
Contents
ISafety information................................ ................................ ................................ ..................... 6
II Items suppliedandaccessories................................ ................................ ................................ 7
1Briefdescription................................ ................................ ................................ ........................ 8
2Operation................................ ................................ ................................ ................................ 10
2.1 Frontpanel................................ ................................ ................................ ....................... 10
2.2 Display ................................ ................................ ................................ ............................. 11
2.2.1 Line 1 =Labels................................ ................................ ................................ ........................ 11
2.2.2 Line 2 =Value with name and unit................................ ................................ ........................... 13
2.3 Keypad ................................ ................................ ................................ ............................. 13
2.3.1 Changing values................................ ................................ ................................ ...................... 14
2.3.2 Entering "sources"................................ ................................ ................................ ................... 15
2.3.3 Entry errors ................................ ................................ ................................ ............................. 15
2.4 Accessrights ................................ ................................ ................................ .................... 16
2.4.1 Calibration lock................................ ................................ ................................ ........................ 16
2.4.2 Certification data log................................ ................................ ................................ ................ 17
2.4.3 Supplier's lock and customer'slock................................ ................................ .......................... 17
2.5 Formationof thelist structure ................................ ................................ ........................... 17
3Functional description................................ ................................ ................................ ............. 22
3.1 User-Liste................................ ................................ ................................ ......................... 23
3.2 Standardvolume(volumeatbaseconditions) list................................ ............................. 24
3.3 Actual volume(volume at measurement conditions) list................................ ..................... 26
3.4 Pressurelist................................ ................................ ................................ ...................... 27
3.4.1 Submenu pressure sensor 2 „ SMenu Press. 2 “................................ ................................ ......30
3.4.2 Submenu pressure coefficients................................ ................................ ................................ 32
3.5 Temperaturelist................................ ................................ ................................ ................ 34
3.5.1 Submenu temperature coefficients ................................ ................................ .......................... 36
3.6 Volumecorrector list................................ ................................ ................................ ......... 36
3.7 Archivelist................................ ................................ ................................ ........................ 40
3.7.1 Findfunction forchecking the archive entries................................ ................................ ..........43
3.7.2 Measurement period archive 2 ................................ ................................ ................................ 43
3.7.3 Flexible archives1 to 4................................ ................................ ................................ ............43
3.8 Status list................................ ................................ ................................ .......................... 44
3.8.1 List ofstatus messages ................................ ................................ ................................ ...........47
3.8.2 Statusregister addresses................................ ................................ ................................ ........52
3.9 System list................................ ................................ ................................ ........................ 53
3.10 Servicelist................................ ................................ ................................ ........................ 55
3.10.1 Submenu ambient temperature “SMenu Amb.temp.”................................ ............................... 59
3.10.2 Submenu revisal“SMenu Revisal”................................ ................................ ........................... 60
3.11 Input list................................ ................................ ................................ ............................ 60
3.12 Outputlist ................................ ................................ ................................ ......................... 65
3.12.1 Brief summaryof output parameterisation................................ ................................ ................69
3.13 Interfacelist................................ ................................ ................................ ...................... 70
3.13.1 Submenu „GSM& SMS“................................ ................................ ................................ ..........76
3.13.2 Submenu "IDOM protocol"................................ ................................ ................................ .......78
3.13.3 Submenu “MODBUS parameters” ................................ ................................ ........................... 79
3.14 Energy list................................ ................................ ................................ ......................... 81
4Applications ................................ ................................ ................................ ............................ 82
4.1 Applicationinareas subject toexplosionhazards................................ ............................. 82
4.1.1 Applicationsin Zone 1 ................................ ................................ ................................ .............82
4.1.2 ApplicationsinZone 2 ................................ ................................ ................................ .............82
4.1.3 Ex identification lable................................ ................................ ................................ ...............83
4.2 Ratedoperatingconditionsfor the various conversion methods ................................ .......83
4.3 Connection ofacounter withLFpulsetransmitter ................................ ............................ 84
4.4 Applicationsfor Interface 2asRS485................................ ................................ ............... 85
4.4.1 FE260 Function Expansion................................ ................................ ................................ ......85
4.4.2 FE230 Function Expansion with modem ................................ ................................ .................. 86

Volume Conversion Device EK220
© ElsterGmbH 5
4.4.3 Deviceswith RS485 interface,without modem (also FE260 without modem).......................... 86
4.4.4 EK220 connected to RS485-Bus(real RS485)................................ ................................ ........ 86
4.5 Applicationsfor Interface2asRS232................................ ................................ ............... 87
4.5.1 Modem with controlsignals................................ ................................ ................................ ..... 87
4.5.2 Modem without controlsignals................................ ................................ ................................ 87
4.5.3 Interface isolator MTL5051................................ ................................ ................................ ..... 88
4.5.4 Other deviceswith RS232 interface (no modem) ................................ ................................ .... 89
4.5.5 Sending short messagesby SMS................................. ................................ .......................... 89
4.5.6 Standard output data records forprocess data ("three-minute values") ................................ ... 89
4.6 Interfaceprotocols................................ ................................ ................................ ............ 90
4.6.1 Modbus ................................ ................................ ................................ ................................ .. 90
4.6.2 Idom protocol................................ ................................ ................................ .......................... 90
5Installationandmaintenance ................................ ................................ ................................ ..91
5.1 Installationprocedure ................................ ................................ ................................ ....... 91
5.2 Cableconnectionandearthing................................ ................................ ......................... 92
5.3 Checkingthepressuresensor................................ ................................ .......................... 92
5.4 Terminal layout................................ ................................ ................................ ................. 93
5.5 Connection ofalow-frequency pulsegenerator (reed contacts) ................................ ....... 94
5.6 Connection oftheserial interfaceRS485................................ ................................ .......... 95
5.6.1 FE260 Function Expansion (with or without modem)................................ ............................... 95
5.6.2 FE230 Function Expansion................................ ................................ ................................ ..... 96
5.6.3 Other deviceswith RS485 interface (no modem) ................................ ................................ .... 96
5.6.4 EK220 connected to RS485-Bus(real RS485)................................ ................................ ........ 97
5.7 Connection oftheserial interfaceRS232................................ ................................ .......... 98
5.7.1 Modem with controlsignals................................ ................................ ................................ ..... 98
5.7.2 Industrialmodem EM260 orModemwithoutcontrolsignals................................ .................... 98
5.7.3 Interface isolator MTL5051 ................................ ................................ ................................ ..... 99
5.7.4 Other deviceswith RS232 interface,EK220 battery powered................................ ................ 100
5.7.5 Other deviceswith RS232 interface,EK220 withexternalpower supply................................ 100
5.8 Seals ................................ ................................ ................................ .............................. 101
5.8.1 Seallayout of basic device ................................ ................................ ................................ ... 102
5.8.2 Seallayout of temperature sensor ................................ ................................ ........................ 104
5.8.3 Sealing layoutofpressure sensor -Type CT30................................ ................................ ...... 105
5.8.4 Sealing layoutofpressure sensor type 17002................................ ................................ ....... 106
5.9 Battery replacement ................................ ................................ ................................ ....... 107
AApprovals ................................ ................................ ................................ ............................. 109
A-1 EC DeclarationofConformance ................................ ................................ ..................... 109
A-2 ApprovalforEx Zone................................ ................................ ................................ ...... 110
BTechnicaldata ................................ ................................ ................................ ...................... 115
B-1 Generaldata(mechanical) ................................ ................................ ............................. 115
B-2 Batteries................................ ................................ ................................ ......................... 115
B-3 Externalpower supply ................................ ................................ ................................ .... 116
B-4 Pulseand status inputs ................................ ................................ ................................ .. 116
B-5 Signal andpulseoutputs ................................ ................................ ................................ 117
B-6 Optical serial interface ................................ ................................ ................................ .... 117
B-7 Electrical serial interface(internal)................................ ................................ .................. 117
B-8 Pressuresensor ................................ ................................ ................................ ............. 118
B-8.1 Type CT30................................ ................................ ................................ ............................... 118
B-8.2 Type 17002................................ ................................ ................................ .............................. 118
B-8.3 Installation information ................................ ................................ ................................ ............. 118
B-9 Temperaturesensor ................................ ................................ ................................ ....... 119
B-10 Measurementuncertainty ................................ ................................ ............................... 119
CIndex................................ ................................ ................................ ................................ ..... 120

Volume Conversion Device EK220
6 © Elster GmbH
I Safetyinformation
FThe connections of the EK220 are freely accessible during setting up.Therefore, make
surethatno electrostaticdischarge (ESD)can occurinordertoavoiddamagetothe
components. Theperson carryingouttheinstallationcan, forexample,discharge
himself/herselfbytouchingthepotential equalisationline.
FToavoid erroneous operationandproblems, theoperating manual mustbereadbe-
foreputtingtheEK220 intooperation.
The EK220 VolumeConversion Device (= ElectronicVolumeCorrector) canbe used in
ExZone 1 accordingVDE 0170 for gases of Temperature ClassT4(ignitiontemperature
> 135°C, e.g. naturalgas).See AppendixA-2 for EC prototype test certificate.
In this application itis essentialto take noteofthe following information:
FFollow therelevant applicablenational regulations andappropriatestandards,e.g.
EN 60079-14 andEN60079-11.
FMake sure thatthe limits quoted inthe EC prototype test certificate (see AppendixA-2)
for the devices to be connected are not exceeded.
FThehousingof theEK220must be eartheddirectly to apotentialequalisationstrip.A
terminal screw isprovidedforthisonthelefthousingwall.
FRepairsonthe EK220 mayonlybycarriedoutbyElsterGmbH.

Volume Conversion Device EK220
© ElsterGmbH 7
II Items suppliedandaccessories
Items supplied:
The items suppliedwith the EK220 include:
a) EK220 Volume Conversion Device
b) Dispatch list
c) Configuration datasheet
d) OperatingManual
e) Bag of accessories, EK220
Orderinginformationandaccessories Order no.
EK220 Volume Conversion Device, complete 83 462 540
EBL 50 Temperature Sensor Receptacle, complete with M10 x1 we ld-in sleeve 73 012 634
EBL 67 Temperature Sensor Receptacle, complete with M10 x1 weld-in sleeve 73 014 456
EBL 160 Temperature Sensor Receptacle, complete with G 3/4" weld-in sleeve
and seal
73 012 100
EBL 250 Temperature Sensor Receptacle, complete with G 3/4" weld-in sleeve
and seal
73 015 695
Three-way test tap 73 008 403
Shut-off ballvalve with Ermeto 6L test connection 73 016 166
Minimess test connection 73 016 167
Operatingmanual, German 73 020 054
Operatingmanual, English 73 020 052
Plug-interminal, 2-pole black 04 130 407
Calibration covering cap 73 017 456
Battery module, 13 Ah 73 015 774
Bag of accessories,EK220 73 020 169

Volume Conversion Device EK220
8 © Elster GmbH
1 Brief description
The EK220 VolumeConversion Device isused for the conversion of the gas volume
measured intheoperatingstateby agasmeter tothestandardstateandinthe appropri-
ate energy.
The momentary values of pressure and temperature are measured for the determination of
the operating state. The gas lawdeviation factor (K-value) can be computed alternatively
according toS-GERG-88, AGA 8GC method 1or 2, AGA-NX19 or AGA-NX19 according
Herning and Wolowsky or itcanbe entered as aconstant. The volumeisconverted into
energy using the adjustable calorific value.
The integralrecording device includes the consumption profile of a number of months for a
measurement period of 60minutes.
Powersupply:
·Battery operation witha servicelife dependingon operating mode ³5 years.
·Optionaldouble battery life by connection of an additionalbattery poss ible.
·Battery replacement possible withoutloss ofdata and withoutviolationof calibration
seals.
·Data retention without battery supply due tointernalnon -volatile memory.
·Connection for externalpower supply unit.
Operatorinterface:
·Alphanumeric display with two lines of 16 characters.
·A display list freely assignable bythe user.
·Programming via keypad possible.
·Calibration switch (separately sealed in the device).
·Two user locks (supplier'sand customer's locks) with numericalcodes.
·Access rights for eachindividualvalue canbeset separatelyvia interface (with appro-
priate rights).
Counter/ signal inputs:
·3inputs for reed contacts or transistor switches, programmableas pulse or signalin-
puts.
·Maximumcountingfrequency 2 Hz (adjustable).
·Pulse value for each input separately adjustable, also non-decade.
·Various counters for Vb and Vmas well as for each input (mainand originalcounter,
disturbance volumes, totaliser, adjustable counter, measurement period counter).
·Each input can be separately sealed and secured under official calibration.
Pulse / signal outputs:
·4programmabletransistor outputs, each freelyprogrammableas alarm/warning ou t-
put, pulse output,signaloutput forlimit monitoring.
·Each output can be separately sealedand secured under officialcalibration.
Data interface:
·Optical interface according to IEC 62056-21 (replaces IEC 61107 and EN61107).
·Permanently wired serialinterface, asRS485 or RS232 usable
·MODBUS protocolvia permanently wired serialinterface.
·IDOMprotocolvia the permanently wired serialinterface.

Volume Conversion Device EK220
© ElsterGmbH 9
·Short message via SMS
·Programmable standard output data records for process data("three -minute values").
Pressure sensor:
·Pressure sensor integrated in device, or externalmounted.
·Connection of secondpressure sensor possible(option).
·Alternatively absolute orgauge pressure measurement.
Temperature sensor:
·Pt500 (option Pt100)temperature sensor, different length
Mechanical details /housing:
·Suitablefor wallmounting and meter installation (with mountingbrack et).
·Mounting and deviceinstallation without violating the calibration seals.
·Ambient temperature range: -25°C...+55°C
Extended temperature with restricted functions possible.
Approvals:
·Approvalby calibration authorities as Volume Conversion Deviceacc.
MID-Directive 2004/22/EG
·Exapprovalfor use inExZone 1 according toII 2 G EExia [ia] IIC T4.
Monitoringfunctions
·Monitoring of signallinginputs.
·Monitoring of any values against programmablelimits.
·All monitoring can trigger appropriatereactions such as for example, entries inthe
status register, log book, archive or signallingvia outputs.
Archives
·Counterreadings and maxima fromthelast 24months for Vband Vm.
·Mean values, maximaand minima fromthelast24 months for pressure andtemperature
as well aspartially for the K-valueand conversion factor.
·Flexiblearchive formeasurement periodvalues(consumption profile) fromthe last
5months for Vb, Vm,p, T,Kand C(standardstructure of archive) for ameasurement
period of 60minutes. Themeasurement periodcan besetintherange fromone minute
upto onemonth.
·Archivefor measurement period values forsaving redundant measurement period archive
data fromthelast approx. 40days forVb, V, p,T, Kand C fora measurement period of 60
minutes.
·Day archive with 600 entries.Measurement period values fromthe last 20 month for Vb,
Vm, p, T, Kand C. Archiving oncea day.
·Event logbookwith 500entriesforevents such as for examplestatuschanges, signal-
ling inputs, limit violations.
·Changes logbook ("audittrail") with entry of the last 200changes to settings (param e-
terising steps).
·Certification data log with 50entriesfor changing of some parameters relevant to calibra-
tion regulations. A datarow forthe value is entered before and after the change for each
changeto sucha parameter.
·Four free configurable archives.
·Automatic summer timeselection can beset.

Volume Conversion Device EK220
10 © Elster GmbH
2 Operation
2.1 Frontpanel
The followingare positionedon the front panelfor operation:
·Two-line alphanumeric display with 16 characters perline.
·Four keys for the displayand entry ofvalues.
Identification label

Volume Conversion Device EK220
© ElsterGmbH 11
2.2 Display
Basic display structure (withan example):
Prefix Archive Device status Me n u
Æ á A W B A c t. V. à
Submenu
V m A 1 2 3 4 5 6 7 8 9 m 3
Both linesin the display are subdivided into fields which aredescribed below.
2.2.1 Line 1 =Labels
The firstline is subdivided into five fields ofwhich four are labelled onthe front panel.
1. Prefix (Type of computation)
The type of computation identifies so-called "initialvalues"(also termed "capture values").
These arevalues which have been formed over atimeperiod (e.g. the adjustablemea s-
urement period orone month). Labels:
- max Maximum – highest value within the time range
- min Minimum – lowest value within the time range
- DChange – volume within the time range
- ÆMean – meanwithin the time range
2. Archive
If an arrowpoints upwards to the label "Archive", thenthedisplayedvalue isan archived
value. This was frozen at a definedpoint intime and cannot be changed.

Volume Conversion Device EK220
12 © Elster GmbH
3. Devicestatus
Here amaximumof three of themost important itemsof status informationarecontinually
shown.
A flashing character signifies that the corresponding state isstillpresentand the corr e-
sponding message is present in the momentary status.
A non-flashing character signifies that the correspondingstate ispast, but the message in
the status register has not yet been cleared.
Meaning of the letters:
- A "Alarm"
At least one status message has occurred which has resultedin disturbance vol-
umes being counted.
Basically, all messages with numbers"1" or "2"represent alarms(e.g. "Alarmlimits
for pressureor temperature violated" ®3.8).
Alarmmessages are copied intothestatus register and areretained here,evenafter
rectification ofthecause of theerror,until theyare manually cleared.
- W "Warning"
At least one status message has occurred which is valid as awarning.
Basically, all messages with numbersin therange "3" to "8"represent warnings (e.g.
"Warning limits forpressure or temperatureviolated" or "Error on output" ®3.8).
Warning messages are copied into the status register andare retained here, evenaf-
ter rectification of the cause ofthe error, until they are manually cleared.
- B "Batteries discharged"
The remaining battery servicelife is less than 3 months.
This display corresponds toStatus Message "Batt. low" (®page 50).
- L "Calibration logbook full"
The calibration logbook is full; someparameters cannow only be changed with the
calibration lock open. (®PLogB,page 46 )
This display corresponds to the status message "PLogb full", (®page 50).
F
- If thecalibration lock isopened withthecalibration logbook full, it can only
be closedagain after clearingthecalibration logbook.
- P "Programming mode"
The programming lock (calibration lock) is open.
This display corresponds toStatus Message "Calibration lock" (®page 51).
- o "online"
Adata transfer via the opticalor permanentlywired interfaceis running.In each case
the other interface cannot then beused.
This display corresponds toStatus Message "online" (®page 50).
4. Menu
Here isdisplayedto which list according to Chapter 3 the currentlydisplayed value be-
longs.Insubmenus (indicatedby an arrowtothe left, seebelow)its nameisdisplayed
which isidenticalwith the abbreviated designation of the entry point.
5. Untermenü
- ›Arrow to the right
indicates that the displayed valueis theentry point of asubmenu. This canbe
called with thekey combination <ENTER>.
- ‹ Arrow to the left
indicates that you arelocated in a submenu which can be quitwith the key combi-
nation <ESC>. On pressing <ESC>youare returned totheentry point of the sub-
menu.
›
‹

Volume Conversion Device EK220
© ElsterGmbH 13
2.2.2 Line 2 =Value with name and unit
In thesecondlinethename, value and (when available) the unitofthedata are always
shown.
Example:
V m A 1 2 3 4 5 6 7 8 9 m 3
2.3 Keypad
Key(s) Designation Effect
¯Down cursor
key
Downwards movement within the list:
Fromthe first value inthe list movement isin the direction of the
last value orfromthe last value directly to the firstone.
-Up cursor
key
Upwards movement within thelist:
Fromthe last valuein the list movement is in the direction o
fthe
first value or fromthe first value directly to the last one.
®Right cursor
key
Movementto theright to a differentlist:
Fromthe first list movement is in the direction of the last list or
fromthe last list directly tothefirst one.
With similar lists (e.g.:Vb andVmskipping occurs tothe ap-
propriate value, otherwise to the firstvalue.
Switchover to the second part of the value for values dis-
played on twolines:
- Counter readings divided intopre- and post-decimalplaces.
- Dateand time(together one value) divided.
¬Left cursor
key
Movementto the left toa different list:
Fromthe last list movement is inthe direction of the first list or
fromthefirst list directly tothe last one. With similar lists (e.g.:
Vb and Vmskipping occurs to the appropriate value, otherwise
to thefirst value in theadjacent list.
-+ ¯Enter
Depends on the value displayed(Data class, ®2.3.1)
Activate the entry mode.
Open the submenu.
Update measurement (by pressing twice).
¯+ ® Escape
Return froma submenu to the entry point inthe higherlevel
mainmenu.
Cancel entry (thevalue remains unchanged).
¬+- Home / Clear
Skipsto first valuein the list
Updates a value in the entry mode
¬+® Help Displays the address (valuenumber)of the value
In the entry mode the keys change their functions, see Chapter 2.3.1.

Volume Conversion Device EK220
14 © Elster GmbH
2.3.1 Changing values
The methods of entering andchangingvalues differ depending on the value. These are
therefore subdivided intoso-called"dataclasses" (abbreviation: "DC").Values inthesame
data class are treated identicallyduringentry. Aprerequisite foran entry isthat the lock
assigned to the valueis open.
The followingdata classes (DC) are presentin the EK220:
DC
Type Entry, change using"ENTER"
1 Display test
No change possible.
2 Function Triggers the function by entering "1".
3 Constant No change possible.
4 Measure-
ment
The valueisupdated by pressing <ENTER> twice.
5 Status By pressing <ENTER> short texts for statusmessages are available.
6 Initialisable
value
After <ENTER> value initialisation (standard setting) by pressing the
key combination <CLR> = ¬+ -.
7 Discrete
value
After <ENTER> value changeby selection from a list of possible val-
ues with the keys -and ¯.
Value initialisation is possible with ¬+ -.
8 Permanent
value
After <ENTER>, setting to any value withinthe validrange is possible.
Selection of eachindividualcharacter to be changed with ¬and ®
and changing with -und ¯.
Value initialisation is possible with ¬+ -.
9 Archive
heading
Branching to the appropriate archive.
11 Combina-
tion
Similar to "Permanent value" (see above)but masked entry, i.e.only
the character currently beingedited is visible, allothers are masked
out by a minus sign.
With a closed lock itisopened on entering thecorrect combination.
With an open lock, the combination is changed by the entry.
12 Counters As "Permanent value" (see above.).
15 Computa-
tioncounter
No change possible.
16 Initialvalue No change possible, sometimes branching to a submenu.
17 Archive
value
No change possible.
19 Status reg-
ister
By pressing <ENTER> short texts for statusmessages are available.
Initialisation (standard setting) by using menu-function <CLR>
If avalueisaccommodated inasubmenu, it cannot be changed independent of its data
class bythe keypad, sincethe key <ENTER> is then usedfor branching into the submenu.

Volume Conversion Device EK220
© ElsterGmbH 15
2.3.2 Entering "sources"
At anumber of points the entry ofa"source"isrequiredforparameterisation(e.g.SC.Qb
in the standard volume list, SC.A1 in the output list).
The address of thedesiredvalueisentered asthe source. Itcan befoundinthetablesat
the beginningof each list(Chapter 3.1 ff.).Incomparisonto the addresses shownthere
however, the following supplements must be given:
- Completion ofleadingzeroesso that a total offour numbers exist in front of the colon.
- If the address includes no underscore "_", then "_0" should be appended.
Example 1:
Source: 2:300 (Address of the standard volume Vb, see table in 3.1)
Enter: 0002:300_0 (Supplements printed in bold)
Example 2:
Source: 6:310_1 (Address of the temperature T, see tablein 3.5)
Enter: 0006:310_1 (Supplements printed in bold)
2.3.3 Entryerrors
Entry error messages are displayed ifincorrect entries are made viathe keypad.
Representation: ----x--- with x= Error code according to the following table.
Code
Description
1 The archive is empty, no values are available yet.
2 The archive valuecannotbe read.
The archive has possibly just been opened bythe interface for reading out.
4 Parameter cannot be changed(constant).
5 No authorisation for changing the value.
To change the value the appropriate lock must be opened.
6 Invalidvalue.
Entered valueis outsidethe permissiblelimits.
7 Incorrect combination.
The enteredcombination (numericalcode) isincorrectand the lock is not opened.
8Entry not possible due to specialsetting or configuration.
11 The entry of the calorific value Ho.bin theenergy listis not permitted. Please
change Ho.b in the Volume correctorlist (®3.6, page 36).
12 The entry of this source (address)is not permitted.
13 The function can only be executed after the clock (®3.9, Time) has been set (ini-
tialised) to its starting value with the key combination ¬+ -.
14
Gas analysis parameters for AGA-NX-19 do not match.
Example: For "H gas" (calorific value Ho.b over 11.055) the densityratiodr must
not exceed the maximumvalue of 0.691. (®3.6)
20
Value for the application-specificdisplay is notdefined.
The valueto be displayed can be defined by the user by entering the address. No
valueisdisplayed becausethis has not yet occurred.
21 Because the certification data logis fullthe calibration lock must be opened for
changing the parameter.

Volume Conversion Device EK220
16 © Elster GmbH
2.4 Accessrights
The EK220 differentiates between four access parties. Each access party has a lock and a
corresponding code. The locks have theorderof priority
Calibration lock – Manufacturer'slock1– Supplier'slock – Customer lock.
The access rights applyboth for keypad inputs as well as for accesses viathe opticalor
electrical(permanentlywired) interface. If thelock islocked, allattempts to set values are
answered with an appropriate error message (see Chap. 2.3.2).
Also thereading ofvalues viathe interfaces isonlypossible,for reasons of data prote c-
tion, when at least one of the locks is open.
Normally, inaddition to theaccess rights assignedto each individualvalue, values can
also bechangedby the access parties with higher priority. Avalue, which forexamplehas
"S" ("Supplier")as access rights, can also bechanged by calibration officialsand avalue
subject to the customer'slock can also be changed by suppliers.
Each party with write accessfor a value can also change the accessrights(write and read
access for each party) for this value viainterface. This means that also the rights of parties
with higher priority can be changed.
2.4.1 Calibration lock
The calibration lock isused forsecuringparameters subject to calibrationregulations. This
includes allvalues which affectthe volume counting.
The calibration lock is implemented as apushbutton locatedwithinthe EK220 housing be-
lowthe circuit boardcover panel. It can be secured with an adhesive seal.
The parameters protectedundercalibration regulationsareeachidentified with "C"inthe
lists in the functionaldescription.
Depending on theapplications, values, which are not includedas inputs subject to calibr a-
tionregulations, can beplacedundertheuserlock viathe WinPADS parameterisingsoft-
ware, for example to be able to use themas signallinginputs.
The calibration lock isopened bypressingthepushbutton (the symbol"P"flashes inthe
display)and isclosedagainwhen itispressed again (symbol "P" goes out).Closureis
also possible by deleting the value"St.PL" (®3.10) viathe keypad orinterface.
On request (during order procedure) parameters which are normallyprotected undercal i-
bration lock can be protected under a differentlock, e.g. supplier’s lock.
1The manufacturer's lock is reserved for Elster GmbH and is not described here.

Volume Conversion Device EK220
© ElsterGmbH 17
2.4.2 Certification data log
With the aidofthe"certificationdatalog" accordingto PTB-A50.7(®PLogB,
chapter 3.8) someparameters relevant to calibration regulations can be changed also
with the calibration lock closed. Prerequisites for this are:
The supplier’s lock (see below) must be open.
At least threeentries must be available in the certification data log.
The affected parameters (e.g. cp value,measurement period)are identified in the lists in
chapter 3 with the access right "PL".
Adata row for the value isentered before andafter the change for each change to such a
parameter with the calibration lockclosed.
If the certification data log has been written full,itcan be cleared with the calibration lock
open using the command ClrPL (®chapter 3.8).
F
If the calibration lock isopened with the certification data log full,itcan onlybe closed
again afterclearing the certification data log.
2.4.3 Supplier's lock and customer's lock
The supplier'sandcustomer'slocks are usedfor securingalldatawhich is not subject to
calibration regulations, butwhich shouldalso not be changed without aut horisation.
The parameters which are write-protectedunder the supplier orcustomer locks are each
identified with "S" or"K" inthe lists inthe functional description (®3).All values which are
shownwith aminus symbol"-"cannot be changed, because they represent, for exa mple,
measurements or constants.
The locks canbe opened byentering acode(the "combination"). (®3.10: St.SL, Cod.S,
St.PL, Cod.C)
2.5 Formation of the list structure
The data display in the EK220 is structured ina tabular form. The individualcolumns in the
table each containassociated values.
Values identifiedwith S and Arc are submenus or archives which you can viewby enter-
ing <ENTER> and leaving again with <ESC>. They each have,subordinate to themain
menu, a dedicatedlist structure,which is written in the corresponding list ( ®3).
The archives are subdivided intoanumber of data rows(alsotermed "data records" ).All
valuesin the same data roware saved ("archived") atthe same pointin time.
The maximumnumber of data rowsand the number of values inadatarowdepends on
the relevant archive. Within an archivethe number of values andtheir meaning are the
same for each data row.
Switching toanother archivedatarowoccurswith the keys -(for"younger"datarows)
and ¯(for"older" data rows). After thelast data row,the first followsagainand vice
versa.
Switching toanother value within a data rowoccurs with the keys ®and ¬.After thelast
value, the first follows again and vice versa.
Asummary of the standard mainmenu (list structure)isshownon the following pages. By
changing the value Menu (see chapter 3.1 ), aminimummain menu can be selected.

Volume Conversion Device EK220
18 © Elster GmbH
User list Standard volume
Actualvolume Pressure
to
„Energ.“ User Std.V. Act.V. Press to „Temp.“
«Vb « Vb « Vm « p «
Vol.at base cond.
(pre-dec. places) Vol.at base cond. (post-dec. places) Actual volume Pressure
VmA Qb Qm pMin
Actual vol. adjust. Flowat base cond. Actual flow Lower alarmlimit
p VbD VmD pMax
Pressure Disturbance quant. Disturbance quant. Upper alarmlimit
T VbT VmT MRL.p
Temperature Total quantity Total quantity Meas. range bottom
Z VbA VmA MRU.p
Compressibility
factor Adjustable counter Adjustable counter Meas. range top
Zb VbME VmME p.F
Compressibility
factor atbase cond.
Month end value Month end value Substitute value
C Time Time pb
Conversion factor Timeof VnME Timeof VbME Press. at base cond.
K.F Md.p
K subst. value Pressure mode
VbME Typ.p
Month end value Press. sensor type
Time SNp
Timeof VbME Serial no. of sensor
VmME SMenu p coeff. S
Month end value Submenu p coeff.
Time pAdj1
Timeof VmME Adjustment val.1
Menu pAdj2
Dislpay menu Adjustment val.2
Prog
Accept adjust.
p.atm
Amb. press.fixed
value
p.Mes
Pressure meas
p.Abs
Absolute press.
SMenu Press.2 S
Submenu p-sens. 2
(acc. to Selp2)
p2Mes
Pres. measp-
sens.2
(acc. to Selp2)

Volume Conversion Device EK220
© ElsterGmbH 19
Temperature Conversion Archive Status + Logbook
to
„Press“ Temp. Conv. Archiv Status to „System“
«T « C «
ArMo1 Arc
«
S.Reg S
«
Temperature Conversion factor Month archive 1 Statusregister
TMin K ArMo2 Arc Stat S
Lower alarmlimit Compressibility
ratiofactor Month archive 2 Momentary status
TMax pbX ArDay Arc Clr
Upper alarmlimit pb for gasanalysis
(acc. to Md.K) Day archive Clear S.Reg
MRL.T TbX ArMP Arc Logb. Arc
Meas. range bottom Tb forgasanalysis Meas. per. archive Logbook
MRU.T Ho.b MPer AudTr Arc
Meas. range top Calorific value
(acc. to Md.K)
Meas. period AuditTrail
T.F CO2 MP.Re PLogB Arc
Substitute value Carbon diox. cont. Rem.timemea. p. Certification data log
(acc. to PL ®p. 58)
Tb H2 FrMP ClrPL
T atbase cond. Hydrogen content
(acc. to Md.K)
Freeze ArMP Clear cert. datalog
(acc. to PL ®p. 58)
Md.T Rhob
Temperature Mode Densitygas atbase
cond.(acc.toMd.K)
Typ.T N2
Temp. sensor type Nitrogen content
(acc. to Md.K)
SNT dv
Serial no. of sensor
Density ratio
(acc. to Md.K)
SMenu T coeff. S
K.F
Submenu p coeff. Substitute value
TAdj1 Md.K
Adjustment val.1 K mode
TAdj2
Adjustment val.2 K mode changeo-
ver
Prog Md.K =0
Accept adjust.
T.Mes
Temp. meas. Conv.
C
Conversion factor
Ho.n
Calorific value
K.F
Substitute value
Md.K
K mode

Volume Conversion Device EK220
20 © Elster GmbH
System Service Inputs
to
„Status“
System Serv. Inputs to
„Outp.“
«Time «
Bat.R «cp.I1 «
Date and time Remaining bat.life cp-value Input1
MdTim Bat.C
cp.I2
Daylightsav.: y-
es/no
Battery capacity cp-value Input2
MCyc St.SL Md.I2
Measurement
cycle
time
Supplierlock Mode for Input2
MCPul Cod.S St.I2
Measurement cycle
triggered by input
pulse
Suppliercode Statuson Input 2
OCyc St.CL MdMI2
Operating cycle
time
Customer lock Mode monitoring I2
Disp Cod.C SC.I2
Disp. switch-off
time
Customer code Source monitoring I2
Aut.V St.PL L1.I2
Disp. changover
time
Calibration lock Limit 1forI2
SNo Contr L2.I2
Serial no. device Display contrast Limit 2forI2
Ta.Rg Adj.T SpI2
Ambienttemp. Clock adjust. factor Stat.pointer mon.I2
Vers Save St.I3
Software version Savbe alldata Statuson Input 3
Chk Clr.A Selp2 MdMI3
Software checksum Clear achives Selectp sensor 2 Mode monitoring I3
Clr.V SMenu Amb. temp. S SC.I3
Clear counter Submenu ambienttemp. Source monitoring I3
Clr.X Addr L1.I3
Initialise device Addr. user display Limit 1forI3
Bin.T ... SpI3
Temp. binary value User display Stat.pointer mon.I3
Bin.p SMenu RevisalS SNM
Pressure binary value Submenu Revisal Serial no. gas meter
Binp2 ArCal Arc
Press. 2 binary value Frozen data
Sel.T Frz
SelectTsensor Freeze
Sel.p -
Selectp sensor Display test