Elster EK260, 83 462 140 Operating Manual And Installation Instructions

EK260

Volume Conversion Device EK260

Operating Manual and Installation Instructions

Operating Manual: 73016960 SW Version: from V2.52

Issued: 13.03.08 (p) Edition:

Volume Conversion Device EK260

All the figures and descriptions in this operating and instruction manual have been compiled only after careful checking. Despite this however, the possibility of errors cannot be completely eliminated. Therefore, no guarantee can be given for completeness or for the content. Also, the manual cannot be taken as giving assurance with regard to product characteristics. Furthermore, characteristics are also described in it that are only available as options.

The right is reserved to make changes in the course of technical development. We would be very grateful for suggestions for improvement and notification of any errors, etc.

With regard to extended product liability the data and material characteristics given should only be taken as guide values and must always be individually checked and corrected where applicable. This particularly applies where safety aspects must be taken into account.

You can obtain further support from the branch or representative responsible for your area. You will find the address in the Internet or simply enquire at Elster GmbH.

Passing this manual to third parties and its duplication, in full or in part, are only allowed with written permission from Elster GmbH.

The guarantee becomes invalid if the product described here is not handled properly, repaired or modified by unauthorised persons or if replacement parts which are not genuine parts from Elster GmbH are used.

Mainz-Kastel, March 2008

2 Elster GmbH

Volume Conversion Device EK260

Contents

I Safety instructions.......................................................................................................5

II Items supplied and accessories.................................................................................6

1 Brief description ..........................................................................................................7

2 Operation......................................................................................................................9

2.1 Front panel...............................................................................................................9

2.2 Display...................................................................................................................10

2.2.1 Line 1 = Labels...........................................................................................................10

2.2.2 Line 2 = Value with name and unit ............................................................................. 12

2.3 Keypad...................................................................................................................13

2.3.1 Changing values ........................................................................................................14

2.3.2 Entering sources........................................................................................................15

2.3.3 Entry errors................................................................................................................15

2.4 Access rights..........................................................................................................16

2.4.1 Calibration lock ..........................................................................................................16

2.4.2 Calibration logbook ....................................................................................................17

2.4.3 Supplier's lock and customer's lock............................................................................ 17

2.5 Formation of the list structure.................................................................................17

3 Functional description...............................................................................................22

3.1 Standard Volume (Volume at base conditions) list.................................................23

3.2 Actual volume (volume at measurement conditions) list..........................................25

3.3 Pressure list...........................................................................................................28

3.4 Temperature list.....................................................................................................31

3.5 Volume corrector list ..............................................................................................34

3.6 Archive list..............................................................................................................37

3.6.1 Device numbers and channel numbers for WinView and WinLIS............................... 40

3.6.2 Find function for checking the archive entries............................................................. 40

3.7 Status list................................................................................................................41

3.7.1 List of status messages .............................................................................................. 44

3.7.2 Status register addresses........................................................................................... 50

3.8 System list..............................................................................................................51

3.9 Service list..............................................................................................................53

3.10 Input list..................................................................................................................58

3.11 Output list...............................................................................................................64

3.11.1 Parameterising the HF output .................................................................................... 69

3.11.2 Brief summary of output parameterisation..................................................................70

3.12 Interface list............................................................................................................71

3.12.1 Printer log ..................................................................................................................78

3.12.2 Automatic setting of the clock by remote data transmission .......................................80

3.12.3 Modbus parameters...................................................................................................82

3.13 Energy list ..............................................................................................................85

3.14 User list..................................................................................................................87

4 Applications ...............................................................................................................88

4.1 Rated operating conditions for the various conversion methods............................88

4.2 Application as high flow display device ..................................................................90

4.3 Application as flow recording device......................................................................91

4.4 Connection of a counter with LF pulse transmitter .................................................91

4.5 Connecting a meter with encoder...........................................................................92

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Volume Conversion Device EK260

4.6 Application in areas subject to explosion hazards ................................................. 93

4.6.1 Applications in Zone 1................................................................................................ 93

4.6.2 Applications in Zone 2................................................................................................ 93

4.7 Applications for Interface 2.................................................................................... 94

4.7.1 Modem with control signals (standard modem) .......................................................... 94

4.7.2 Modem without control signals................................................................................... 94

4.7.3 FE260 Function Expansion with modem ....................................................................95

4.7.4 FE260 Function Expansion without modem ............................................................... 95

4.7.5 FE230 Function Expansion with modem ....................................................................95

4.7.6 Printer on the EK260 or on an FE260.........................................................................96

4.7.7 Other device with RS232 interface (e.g. PC).............................................................. 96

4.7.8 Modbus protocol.........................................................................................................96

4.7.9 Sending short messages by SMS...............................................................................97

4.7.10 Standard output data records for process data ("three-minute values")...................... 97

5 Installation and maintenance ................................................................................... 99

5.1 Installation procedure ............................................................................................ 99

5.2 Mounting.............................................................................................................. 100

5.2.1 Wall mounting ..........................................................................................................100

5.2.2 Meter superstructure................................................................................................ 101

5.3 Cable connection and earthing............................................................................ 102

5.4 Terminal layout.................................................................................................... 103

5.5 Connection of the serial interface ........................................................................ 105

5.5.1 Modem with control signals...................................................................................... 105

5.5.2 Modem without control signals.................................................................................106

5.5.3 Printer...................................................................................................................... 106

5.5.4 Other devices with RS-232 interface ........................................................................107

5.5.5 FE260 Function Expansion (optionally with modem)................................................ 107

5.5.6 FE230 Function Expansion ...................................................................................... 108

5.6 Connection of a low-frequency pulse transmitter (reed contacts) ........................ 108

5.7 Connection of an encoder.................................................................................... 109

5.8 Seals.................................................................................................................... 109

5.8.1 Seal layout of basic device....................................................................................... 110

5.8.2 Seal layout of temperature sensor............................................................................112

5.8.3 Sealing layout of pressure sensor ............................................................................113

5.9 Battery replacement............................................................................................. 114

A Approvals................................................................................................................. 116

A.1 EC Declaration of Conformance .......................................................................... 116

A.2 Approval for Ex Zone 1........................................................................................ 117

B Technical data ......................................................................................................... 122

B-1 General data (mechanical, terminals, ambient conditions).................................. 122

B-2 Batteries.............................................................................................................. 122

B-3 External power supply......................................................................................... 123

B-4 Pulse, status and encoder inputs......................................................................... 123

B-5 Signal and pulse outputs..................................................................................... 124

B-6 Optical serial interface......................................................................................... 124

B-7 Electrical serial interface (internal)....................................................................... 124

B-8 Pressure sensor .................................................................................................. 125

B-9 Temperature sensor ............................................................................................ 125

B-10 Measurement uncertainty .................................................................................... 125

C Index......................................................................................................................... 126

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Volume Conversion Device EK260

I Safety instructions

F The connections of the EK260 are freely accessible during setting up. Therefore, make

sure that no electrostatic discharge (ESD) can occur in order to avoid damage to the components. The person carrying out the installation can, for example, discharge himself/herself by touching the potential equalisation line.

F To avoid erroneous operation and problems, the operating manual must be read

before putting the EK260 into operation.

The EK260 Volume Conversion Device(Volume Conversion Device) is suitable for applications in Ex Zone 1 for gases in the temperature class T4 (ignition temperature > 135°C, e.g. natural gas) according to VDE 0170. (see Appendix A-2)

In this application it is essential to take note of the following information:

F Follow the regulations in the relevant standards, in particular DIN EN 60079-14 (VDE

0165 Part 1) and DIN EN 50014.

F Make sure that the limits quoted in the certificate of conformance (see Appendix A-2) for

the devices to be connected are not exceeded.

F The housing of the EK260 must be earthed directly to a potential equalisation strip. A

terminal screw is provided for this on the left housing wall.

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Volume Conversion Device EK260

II Items supplied and accessories

Items supplied:

The items supplied with the EK260 include:

a) EK260 Volume Conversion Device b) Dispatch list c) Configuration data sheet d) Operating Manual e) 3 blind insertion seals for gland-type cable entries f) Lead sleeves for sealing the pressure connection.

Ordering information and accessories

• EK260 Volume Conversion Device, complete

• EBL 50 Thermowell, complete with M10 x 1 weld-in sleeve

• EBL 67 Thermowell, complete with M10 x 1 weld-in sleeve

• EBL 160 Thermowell, complete with G 3/4" weld-in sleeve and sealing ring

• EBL 250 Thermowell, complete with G 3/4" weld-in sleeve and sealing ring

• Three-way test tap

• Shut-off ball valve with Ermeto 6L test connection

• Minimess test connection

• Operating manual, German

• Operating manual, English

• Operating manual, French

• Plug-in terminal, 2-pole black

• Calibration covering cap

Order no. 83 462 140 73 012 634 73 014 456 73 012 100 73 012 100 73 008 403 73 016 166 73 016 167 73 016 960 73 017 115 73 017 218 04 130 407 73 016 879

• Battery module, 13 Ah

6 Elster GmbH

73 015 774

Volume Conversion Device EK260

1 Brief description

The EK260 Volume Conversion Device is used for the conversion of the gas volume measured at line conditions by a gas meter into the base conditions and into the appropriate energy.

The pressure and temperature are measured for the determination of the line conditions. The inverted compressibility factor ratio (K-value) can alternatively be calculated according to S-GERG 88 or AGA-NX19 or it can be entered as a constant. The volume is converted into energy using the adjustable calorific value.

The integral recording device contains meter readings and maxima from the last 15 months and the consumption profile of the last 9 months for a measurement period of 60 minutes.

Power supply:

• Battery operation with a service life depending on operating mode ≥ 5 years.

• Optional double battery life is possible by connection of an additional battery pack.

• Battery replacement possible without loss of data and without violation of calibration seals.

• Data retention without battery supply due to internal EEPROM.

• Connection for external power supply unit.

Operator interface:

• Alphanumeric display with two lines of 16 characters.

• A display list freely assignable by the user.

• Programming via keypad possible.

• Calibration switch (separately sealed in the device).

• Calibration logbook according to PTB-A 50.7 for changing values relevant to calibration

without the calibration lock.

• Two user locks (supplier's and customer's locks) with numerical codes.

• Access rights for each individual value can be set separately via interface (with appropriate

rights).

Counter / signal inputs:

• 3 inputs for reed contacts or transistor switches, programmable as pulse or signal inputs.

• Connection provided for an Elster GmbH C1 Encoder Counter for digital transmission of

genuine counter readings (also in battery mode).

• Maximum counting frequency 2 Hz (adjustable).

• Pulse value for each input separately adjustable, also non-decade.

• Various counters for Vb and Vm and for each input (main counter, original counter,

disturbance volumes, totaliser, adj. counter, measurement period counter, day counter).

• Each input can be separately sealed and secured under official calibration.

Pulse / signal outputs:

• 4 programmable transistor outputs, each freely programmable as alarm / warning output, pulse output, signal output for limit monitoring.

• Each output can be separately sealed and secured under official calibration.

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Volume Conversion Device EK260

Data interface:

• Optical interface according to IEC 62056-21 (replaces IEC 61107 and EN61107).

• Permanently wired serial interface (RS232 or RS485).

• MODBUS protocol via the permanently wired serial interface.

• Automatic setting of the clock by remote data transmission with a modem connected.

• Sending short messages by SMS.

• Programmable standard output data records for process data ("three-minute values").

Pressure and temperature sensors:

• Pressure sensor type CT30 integrated in device,or external mounted.

• Pt500 temperature sensor, variable length.

Mechanical details / housing:

• Suitable for wall mounting and meter installation (with mounting bracket).

• Mounting + device installation without breaking the calibration seals.

• Ambient temperature range: -25°C...+55°C

Extended temperature range with restricted functions possible.

Approvals:

• Approval by calibration authorities

- as Volume Conversion Device acc. MID-Directive 2004/22/EG,

- as flow recording device acc. PTB-A50.7,

- as high flow display device acc. PTB-A50.7.

• Ex approval for use in Ex Zone 1 according to EEx ib IIC T4.

Monitoring functions

• Monitoring of signalling inputs.

• Monitoring of any values with respect to programmable limits.

• All monitoring can trigger appropriate reactions such as for example, entries in the status

Archive

Branching to the appropriate archive.

heading

Combination Similar to "Permanent value" (see above) but masked entry, i.e. only

the character currently being edited is visible, all others are masked out by a minus sign. With a closed lock it is opened on entering the correct combination. With an open lock, the combination is changed by the entry.

ENTER

Counters As "Permanent value" (see above.).

Computation

No change possible.

counter

Initial value No change possible,

sometimes branching to a submenu.

Archive value No change possible.

Status register

Flag No change possible.

Constant value with 0

Abbreviated text for the status messages can be called with <

ENTER

Initialisation is possible with the menu command Clr.

As "Permanent value" (DC = 8, see above), but the entry of "0" is always possible independent of the specified limits.

If a value is accommodated in a submenu, it cannot be changed independent of its data class by the keypad, since the key <

ENTER

> is then used for branching into the submenu.

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Volume Conversion Device EK260

2.3.2 Entering sources

At a number of points the entry of a "source" is required for parameterisation (e.g. SC.Qb in the volume at base conditions list, SC.O1 in the output list). The address of the desired value is entered as the source. It can be found in the tables at the beginning of each list (Chapter 3.1 ff.). In comparison to the addresses shown there however, the following supplements must be given:

- Completion of leading zeroes so that a total of four 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 volume at base conditions 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 table in 3.4) Enter: 0006:310_1 (Supplements printed in bold)

2.3.3 Entry errors

Entry error messages are displayed after invalid entries via the keypad. Display: ----x--- where x = Error code according to the following table

Code

1 2

Description

The archive is empty, no values are available yet. The archive value cannot be read.

The archive has possibly just been opened by the interface for reading out.

4 5

Parameter cannot be changed (constant). No authorisation for changing the value.

To change the value the appropriate lock must be opened.

6 7

Invalid value: The entered value is outside the permissible limits. Incorrect combination: The entered combination (numerical code) is incorrect and

the lock is not opened.

11 *

Entry not possible due to special setting or configuration

- The entry of Vm and VmD in the encoder mode (Md.I1 = 5) is not possible.

- Md.I1 cannot be set to "5" with devices without encoder capability.

The entry of this source (address) is not permitted. For the output source SC.O2, e.g. for output mode "8", the addresses of Qb, Qm, p and T are permissible, but no counter readings, etc.

The function can only by executed after the time (à3.8, Time) has been set (initialised) to its start value with the key combinations ← + ↑ .

Gas analysis parameters for AGA-NX-19 do not match. Example: For "H gas" (calorific value Ho.b over 11.055) the density ratio dr must not exceed the maximum value of 0.691. (à 3.5)

Value for the application-specific display is not defined. The value to be displayed can be defined by the user by entering the address. No value is displayed because this has not yet occurred.

* With an EK260 with a software version below 2.10, this error is displayed with code "8". Elster GmbH 15

Volume Conversion Device EK260

2.4 Access rights

The EK260 differentiates between four access parties and the calibration logbook. Each access party has a lock and a corresponding code. The locks have the order of priority

Calibration lock – Manufacturer's lock1 – Supplier's lock – Customer lock.

The access rights apply both for keypad inputs as well as for accesses via the optical or electrical (permanently wired) interface. If the lock is locked, all attempts to set values are answered with an appropriate error message (see Chap. 2.3.3).

Also the reading of values via the interfaces is only possible, for reasons of data protection, when at least one of the locks is open.

Normally, in addition to the access rights assigned to each individual value, values can also be changed by the access parties with higher priority. A value, which for example has "S" ("Supplier") as access rights, can also be changed by calibration officials and a value subject to the customer's lock can also be changed by suppliers.

Each party with write access for a value can also change the access rights (write and read access for each party) for this value via the interface. The rights of parties with higher priority can be changed.

2.4.1 Calibration lock

The calibration lock is used for securing parameters subject to calibration regulations. This includes all values which affect the volume counting.

The calibration lock is implemented as a pushbutton located within the EK260 housing below the circuit board cover panel. It can be secured with an adhesive seal (→ 5.8.1)

The parameters protected under calibration regulations are each identified with "C" in the lists in the functional description.

Depending on the applications, values, which are not included as inputs subject to calibration regulations, can be placed under the user lock via the WinPADS parameterising software, for example to be able to use them as signalling inputs.

The calibration lock is opened by pressing the pushbutton (the symbol "P" flashes in the display) and is closed again when it is pressed again (symbol "P" goes out). Closure is also possible by deleting the value "St.PL" (→ 3.9) via the keypad or interface. With the aid of the "WinPADS" parameterisation software a time in minutes can also set after which the calibration lock automatically closes.

In particular for applications not subject to the German calibration regulations, the level of protection for all parameters can be changed on request. For example, parameters which are as standard subject to the calibration lock can also be protected with the supplier's lock.

The manufacturer's lock is reserved for Elster and is not described here.

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Volume Conversion Device EK260

2.4.2 Calibration logbook

With the aid of the "Calibration logbook" according to PTB-A 50.7 (→ PLogB, page 42 ) some parameters relevant to calibration regulations can be changed also with the calibration lock closed. Prerequisites for this are:

- The calibration lock (see below) must be open.

- At least three entries must be available in the calibration logbook.

The affected parameters (e.g. cp value, meas urement period) are identified in the lists in Chapter 3 with the access right "PL".

A data row for the value is entered before and after the change for each change to such a parameter with the calibration lock closed.

If the calibration logbook has been written full, it can be cleared with the calibration lock open using the command ClrPL (→ page 43).

If the calibration lock is opened with the calibration logbook full, it canonly be closed again after clearing the calibration logbook.

2.4.3 Supplier's lock and customer's lock

The supplier's and customer's locks are used for securing all data which is not subject to calibration regulations, but which should also not be changed without authorisation.

The parameters which are write-protected under the supplier or customer locks are each identified with "S" or "K" in the lists in the functional description (→ 3). All values which are

shown with a minus symbol "-" cannot be changed, because they represent, for example, measurements or constants. The locks can be opened by entering a code (the "combination") under Cod.S or Cod.C and closed by entering "0" for St.SL or St.CL (→ page 54). With the aid of the parameterising software "WinPADS" a time in minutes can also be set for each lock under the addresses 1:174 ... 4:174 after which it automatically closes.

2.5 Formation of the list structure

The data display in the EK260 is structured in a tabular form. The individual columns in the table each contain associated values.

Values identified with U and Arc are submenus or archives which you can view by entering <ENTER> and leaving again with <ESC>. They each have, subordinate to the main menu,

a dedicated list structure, which is written in the corresponding list (→ 3). The archives are subdivided into a number of data rows (also termed "data records" ). All

values in the same data row are saved ("archived") at the same point in time. The maximum number of data rows and the number of values in a data row depends on

the relevant archive. Within an archive the number of values and their meaning are the same for each data row. Switching to another archive data row occurs with the keys ↑ (for "younger" data rows) and ↓ (for "older" data rows). After the last data row, the first follows again and vice versa. Switching to another value within a data row occurs with the keys → and ← . After the last value, the first follows again and vice versa.

A summary of the standard main menu (list structure) is shown on the following pages. By changing the value Menu (see page 87 ), a minimum main menu can be selected.

Elster GmbH 17

Volume Conversion Device EK260

↔

Volume at base

conditions

"User"

↔

Flow at base cond. Actual flow Lower warn. limit Lower warn. limit

Disturbance quant. Disturbance quant. Upper warn. limit Upper warn. limit

Total quantity Total quantity Lower alarm limit Lower alarm limit

Adjustable counter Adjustable counter Upper alarm limit Upper alarm limit

Source monitoring Source monitoring Meas. range bottom Meas. range bottom

Upper warn. limit Upper warn. limit Meas. range top Meas. range top

Lower warn. limit Lower warn. limit Substitute value Substitute value

Meas. per. counter Meas. per. counter

Month's maximum Month's maximum Pressure mode Temperature mode

Daily counter Daily counter Press. sensor type Temp. sensor type

Month's maximum Month's maximum Sensor serial no. Sensor serial no.

Std.V.

Vb ↔ Vm ↔ p ↔ T

Vol. at base cond. Actual volume Pressure Temperature

Qb ↔ Qm VbD ↔ VmD p.UW VbT ↔ VmT pMin VbA ↔ VmA pMax SC.Qb ↔ SC.Q MRL.p QbUW ↔ QmUW MRU.p QbLW ↔ QmLW p.F VbMP ∆

VbMP max S VbDy ∆ VbDy max S

Equ. coefficient 1 Equ. coefficient 1

Equ. coefficient 2 Equ. coefficient 2

Equ. coefficient 3 Equ. coefficient 3

Actual volume

↔

Act.V.

VmMP ∆

VmMP max S

↔

VmDy ∆ VmDy max S

Eq1p Eq2p Eq3p Eq3T

p1Adj

Adjustment val. 1 Adjustment val. 1

p2Adj

Adjustment val. 2 Adjustment val. 2

Prog

Accept adjust. Accept adjust.

p.Amb

Air press. fixed val. Temp. meas.

p.Mes

Pressure meas. Meas. period mean

p.Abs

Abs.pressure meas. Month's maximum

Meas. period mean Month's minimum

Month's maximum

Month's minimum

Pressure

Press.

p.LW

Pressure at base conditions

Md.p Typ.p SNp

p.MP ∅

p.Mon max S

p.Mon min S

Temperature

Temp.

T.LW T.UW TMin TMax MRL.T MRU.T T.F Tb

Temp. at base conditions

Md.T Typ.T SNT Eq1T

Eq2T

T1Adj T2Adj Prog T.Mes T.MP ∅

T.Mon max S T.Mon min S

To "Conv."

↔

18 Elster GmbH

Volume Conversion Device EK260

↔

"Temp."

Conversion

Conv.

↔ C ↔

Conversion factor Month archive 1 Status register Date and time

Gas law dev. factor Month archive 2 Momentary status Daylight saving: y / n

Ho.b

Calorific value Meas. per. archive Clear S. Reg Meas. cycle time

CO2 MPer

(depends on Md.K) Rem. time mea. p. Audit Trail Disp. switch-off time

(depends on Md.K) ArMP frozen

K substitute value

K mode Ambient temp.

Software version

Software checksum

Carbon dioxide content

H2 / N2 MP.Re

Rhob / dr FrMP

K.F

Md.K

Meas. period Logbook Operating cycle time

Archive Status + Logbook

Archiv

ArMo1 Arc ArMo2 Arc ArMP Arc

Clr MCyc

Status

SReg S Stat S

Logb. Arc

AudTr Arc

PlogB Arc

Calibration Logb.

ClrPL SNo

clear Cal. Logb.

Ta.Rg Vers Chk

System

Time ↔

MdTim

OCyc

Disp

Aut.V

Disp. changeover

time

Serial number

To "Serv."

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Volume Conversion Device EK260

Service Inputs Outputs

"System"

Bat.R

↔

Remaining bat. life Orig. counter Input 1 Mode for Output 1

Bat.C cp.I1 SC.O1

Battery capacity Cp value Input 1 Source Output 1

Serv.

↔

Inputs

↔

Md.O1

Outp.

"Ser.IO."

↔

St.SL Md.I1 cp.O1

Supplier's lock Mode for Input 1 cp value Output 1

Cod.S V1 SpO1

Supplier's code Adj. counter Input 1 Status pointer O1

St.CL q.max Md.O2

Customer's lock

(only for encoder mode)

Mode for Output 2

Cod.C cp.I2 SC.O2

Customer's code Cp value Input 2 Source Output 2

St.PL Md.I2 cp.O2

Calibration lock Mode for Input 2 cp value Output 2

Contr V2 SpO2

Display contrast Adj. counter Input 2 Status pointer O2

Adj.T St.I2 Aj1O2

Clock adjust. factor Status on Input 2 HF adjust factor 1

Sel.p MdMI2 Aj2O2

Select. press. sensor Mode monitorino I2 HF adjust factor 2

Save SC.I2 f1.O2

Save all data Source monitoring I2 Freq. for Aj1.O2

Clr.A L1.I2 f2.O2

Clear archives

Limit 1 for I2 Freq. for Aj2.O2

Clr.V L2.I2 Md.O3

Clear counters Limit 2 for I2 Mode for Output 3

Clr.X SpI2 SC.O3

Initialise device Stat. pointer mon. I2 Source Output 3

Bin.T St.I3 cp.O3

Temp. raw value Status on Input 3 cp value Output 3

Bin.p MdMI3 SpO3

Pressure raw value Mode monitoring I3 Status pointer O3

Addr SC.I3 Md.O4

User display address Source monitoring I3 Mode for Output 4

... L1.I3 SC.O4

User display Limit 1 für I3 Source Output 4

WRp SpI3 cp.O4

Repair counter W Stat. pointer mon. I3 cp value Output 4

VbRp SNM SpO4

Repair counter Vb Serial no. gas meter Status pointer O4

VmRp

Repair counter Vm

Rep.

Revision mode

ArCal Arc

Frozen values

Frz

Freeze

Display test

20 Elster GmbH

Volume Conversion Device EK260

Interfaces Energy User list

"Outp."

Md.S2

↔

Mode, Interface 2 Energy Vb total

DF.S2 P VmT

Data format, Interface 2 Power Vm total

Ser.IO

↔

Energ.

↔

VbT

User

Bd.S2 WD p

Baud rate, Interface 2 Disturbance quantity Pressure

TypS2 WT T

RS-232 / RS-485 Total quantity Temperature

Num.T WA K

No. of rings bef. answrg. Adjustable counter Gas law dev. factor

M.INI Ho,b C

Initialise modem Calorific value Conversion factor

PrLog S

Printer log Source monitoring Status register

CSync S

Clock set by rem. trans. Upper warning limit Month's maximum Vb

GSM.N

GSM network Lower warning limit Of month's max. Vb

GSM.L

Reception field strength Meas. per. counter Of month's max. Vb

StM

Modem status (GSM) Month's maximum Flow at base cond.

P.Sta

Response to PIN code Daily counter Actual flow

PIN code Month's maximum Display menu

Resp1

Response to Message 1

Response to Message 2

Send message

Baud rate, Interface 1

Call window 1 start

Call window 1 end

(depends on setting)

ANT2 SEND Bd.S1 CW1.S CW1.E CW2.S / M.CW1 CW2.E / M.onl

SC.W P.UW P.LW

WMP ∆ WMP max S

WDy ∆ WDy max S

SReg VbMP max Date Time Qb

Qm Menu

"Std.V."

↔

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Volume Conversion Device EK260

3 Functional description

The data display is structured in tabular form (list structure) (→ 2.5). The individual columns in the table each contain associated values. The following functional description is orientated to this list structure.

Here, the following abbreviations are used:

- AD Abbreviated designation

Designation of the value in the display

- Access Write access

Indicates which lock must be opened to change the value (→ 2.4.1, 2.4.3):

- C = Calibration lock

- PL = Calibration logbook (PTB logbook, → page 42)

- M = Manufacturer's lock

- S = Supplier's lock

- K = Customer's lock If the letter is located in brackets, the value can only be changed via the

interface and not via the keypad.

- Address Address of the value.

This is required especially for data transmission via the serial interface. The address can be displayed by pressing the keys ← + → simultaneously.

- DC Data class

The data class shows, amongst other properties, whether and how the value can be changed. (→ 2.3.1)

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Volume Conversion Device EK260

3.1 Standard Volume (Volume at base conditions) list

AD Designation / value Unit Access Address DC

Vb Volume at base conditions m3 PL 2:300 12 Qb Flow at base conditions m3/h - 2:310 4 VbD Vb disturbed m3 S 2:301 12 VbT Vb total m3 - 2:302 15 VbA Vb adjustable m3 S 2:303 12 SC.Qb Source for warning Qb - S 7:154 8 QbUW Upper warning limit Qb m3/h K 7:158 8 QbLW Lower warning limit Qb m3/h K 7:150 8 VbMP ∆

Measurement period counter Vb m3 - 1:160 16 VbMP max Max. meas. per. count. Vb current month m3 - 3:160 16 VbDy ∆

Daily counter Vb m3 - 2:160 16 VbDy max Max. daily count. Vb current month m3 - 4:160 16

Vb Volume at base conditions

The Volume at base conditions computed from the measured "actual volume" is summed here provided no alarm is present.

"Alarm" means "any message with the number "1" or "2" (→ 3.7 ). Vb = Vm ž C where Vm = Actual volume (→ 3.2) C = Conversion factor (→ 3.5)

Qb Flow at base conditions

Momentary flow at base conditions (standard flow rate). Qb = Qm ž C with Qm = Actual flow (→ page 25) C = Conversion factor (→ page 35) The measurement inaccuracy of Qb is maximum 2% to 11% depending on the boundary conditions quoted for Qm (→ page 25). In the alarm state Qb is computed with the substitute values of the disturbed

measurements.

VbD Vb disturbed

Here the volume at base conditions is summed while ever an alarm is present, i.e. a message with the number "1" or "2" is located in any momentary status (→ 3.7). In the alarm state the volume at base conditions is computed with the substitute values of the disturbed quantities. (→ 3.3: p.F, 3.4: T.F)

VbT Vb total

Here the sum of Vb + VbD is always displayed. Entries for Vb or VbD therefore also have an effect here. No entry for VbT itself can be carried out.

VbA Vb adjustable

Here, as with VbT, the total quantity, i.e. disturbed and undisturbed volumes, are counted. In contrast to VbT, VbA can however be changed manually. The counter is typically used for tests.

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Volume Conversion Device EK260

SC.Qb Source for Warning Qb QbUW Upper warning limit Qb QbLW Lower warning limit Qb

Using these three values, the flow at base conditions can be monitored in various ways. When the value to be monitored exceeds the upper limit QbUW or falls

below the lower limit QbLW, the message "Vb Warn Lim." is entered in St.2 (→ page 47 ).

Various actions can in turn be programmed for this message, such as for example, entry of the change of status in the logbook (→ 3.7) or activation of a signalling output (→ 3.11). With SC.Qb you can set which value is to be monitored.

SC.Qb Value to be monitored 0002:310_0 Qb Flow at base conditions 0001:160_0 0002:160_0

VbMP ∆ Meas. period counter Vb VbDy ∆ Daily counter Vb

For further details on entering a source for SC.Qb: See Chap. 2.3.2.

VbMP ∆ Measurement period counter Vb

VbMP ∆ is restarted at "0" at the beginning of each measurement period (→ 3.6) and indicates the progress of VbT (see above). The measurement period MPer can be set in the archive list (→ 3.6).

At the end of each measurement period VbMP ∆ is saved in the measurement period archive (→ 3.6). VbMP ∆ can be monitored by appropriate programming of SC.Qb and QbUW (see above) in order, for example, to issue a warning signal to a special-contract customer when a limit is exceeded.

VbMP max Max. measurement period counter Vb in current month

By entering <ENTER> you can branch to the submenu where the time stamp of the maximum is displayed.

The maxima of the last 15 months can be interrogated in the month archive 1 (→ 3.6).

VbDy ∆ Daily counter Vb

VbDy ∆ is restarted with "0" at the start of each day and indicates the progress of VbT (see above). As standard, the start of day is set to 06:00 hrs. and can be

changed with the calibration lock open via the serial interfaces under the address "2:141".

VbDy max Max. daily counter Vb in current month

By entering <ENTER> you can branch to the submenu where the time stamp of the maximum is displayed. The maxima of the last 15 months can be interrogated in the month archive 1 (→ 3.6).

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Volume Conversion Device EK260

3.2 Actual volume (volume at measurement conditions) list

AD Designation / value Unit Access Address DC

Vm Actual volume m3 PL 4:300 12 Qm Actual flow rate m3/h - 4:310 4 VmD Vm disturbed m3 S 4:301 12 VmT Vm total m3 - 4:302 15 VmA Vm adjustable m3 S 4:303 12 SC.Q Source for Warning Q - S 8:154 8 QmUW Upper warning limit Qm m3/h K 8:158 8 QmLW Lower warning limit Qm m3/h K 8:150 8 VmMP ∆

Measurement period counter Vm m3 - 8:160 16 VmMP max Max. meas. per. count. Vm current month m3 - 10:160 16 VmDy ∆

Daily counter Vm m3 - 9:160 16 VmDy max Max. daily count. Vm current month m3 - 11:160 16

(Legends: see page 22)

Vm Actual volume

The volume V1 (→ 3.10) measured on the input is summed here provided no alarm is present.

"Alarm" means "any message with the number "1" or "2" (→ 3.7 ). The entry of Vm is not possible in the encoder mode (Md.I1 = 5). An attempt to make an entry leads to entry error "11" (→ 2.3.3 ) In the encoder mode, to bring Vm to the gas meter reading and to clear VmD, Md.I1 (→ 3.10 ) can first be set to "0" and then set again to "5".

Qm Actual flow rate

Momentary actual flow (actual flow rate). The measurement inaccuracy of the displayed actual flow rate depends on

whether a pulse transmitter or an encoder is connected: With a connected pulse transmitter: With a pulse interval of a maximum of 15 minutes (at least four pulses per hour) and cp.I1 ≤ 1 (→ page 58) the measurement uncertainty of Qm is maximum 1%.

With a pulse interval of more than 15 minutes Qm = "0" is displayed. After a change of the gas flow the accurate value can only be shown once the gas meter has sent at least two pulses. With a connected encoder: If the counter reading changes every 2 seconds or quicker, the measurement uncertainty of Qm is maximum 1%. With counter reading changes every 200 seconds or quicker the measurement uncertainty is maximum 10%. It can be reduced down to 2% at MCyc = 4 seconds by reducing the measuring cycle MCyc (→ page 51). If the encoder counter reading does not change for longer than 200 seconds, Qm = "0" is displayed.

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Volume Conversion Device EK260

VmD Vm disturbed

Here the actual volume is summed while ever an alarm is present, i.e. a message with the number "1" or "2" is located in any momentary status (→ 3.7). The entry of VmD is not possible in the encoder mode (Md.I1 = 5). An attempt to make an entry leads to entry error "11" (→ 2.3.3 ) In the encoder mode, to clear VmD and to bring Vm to the gas meter reading, Md.I1 (→ 3.10 ) can first be set to "0" and then set again to "5".

VmT Vm total

Here the sum of Vm + VmD is always displayed. Entries for Vm or VmD therefore also have an effect here. No entry for VmT itself can be carried out.

With the connection of an encoder (Md.I1 = 5, → 3.10), VmT corresponds with two exceptions to the original counter Vo (→ 3.10 ) and so also to the gas meter

reading:

− When the gas meter runs backwards, VmT stops and only continues synchronously with the gas meter again when the meter has a higher reading than before it started to run backwards.

− VmT always has 9 pre-decimal and 4 post-decimal places, whereas the encoder always has 8 significant places and has between 6 and 9 pre-decimal places depending on the cp value of the gas meter. With a cp value of "1" VmT has one pre-decimal place more which is incremented with each overflow of the gas meter.

VmA Vm adjustable

Here, as with VmT, the total quantity, i.e. disturbed and undisturbed volumes are counted. In contrast to VmT, VmA can however be changed manually.

This counter is typically set to the same reading as the gas meter in order to be able to easily detect deviations by comparison of the two counter readings.

SC.Q Source for Warning Q QmUW Upper warning limit Qm QmLW Lower warning limit Qm

Using these three values, the actual flow can be monitored in various ways. When the value to be monitored exceeds the upper limit Qm.UW or falls below the lower limit Qm.LW, the message "Vm Warn Lim." is entered in St.4 (→ page 47 ). Various actions can in turn be programmed for this message, such as for example, entry of the change of status in the logbook (→ 3.6) or activation of a signalling output (→ 3.11). With SC.Q you can set which value is to be monitored.

SC.Q Value to be monitored

0004:310_0 Qm Actual flow rate 0008:160_0 0009:160_0

VmMP ∆ Measurement period counter Vm VmDy ∆ Daily counter Vm

For further details on entering a source for SC.Q: See Chap.2.3.2.

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Volume Conversion Device EK260

VmMP ∆ Measurement period counter Vm

VmMP ∆ is restarted with "0" at the beginning of each measurement period (→ 3.6) and indicates the progress of VmT (see above). The measurement period MPer can be set in the archive list (→ 3.6).

At the end of each measurement period VmMP ∆ is saved in the measurement period archive (→ 3.6). VmMP ∆ can be monitored by appropriate programming of SC.Qb and QbUW (see above) in order, for example, to issue a warning signal to a special-contract customer when a limit is exceeded.

VmMP max Max. measurement period counter Vm in current month

By entering <ENTER> you can branch to the submenu where the time stamp of the maximum is displayed.

The maxima of the last 15 months can be interrogated in the monthly archive 1 (→ 3.6).

VmDy ∆ Daily counter Vm

VmDy ∆ is restarted with "0" at the beginning of each day and indicates the progress of VmT (see above). As standard, the start of day is set to 06:00 hrs. and can be changed if required via the serial interfaces under the address "2:141".

VmDy max Max. daily counter Vm in current month

By entering <ENTER> you can branch to the submenu where the time stamp of the maximum is displayed. The maxima of the last 15 months can be interrogated in the month archive 1 (→ 3.6).

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Volume Conversion Device EK260

3.3 Pressure list

AD Designation / value Unit Access Address DC

p Pressure bar - 7:310_1 4 p.LW Lower warning limit pressure bar S 10:150 8 p.UW Upper warning limit pressure bar S 10:158 8 pMin Lower alarm limit pressure bar C 7:3A8_1 8 pMax Upper alarm limit pressure bar C 7:3A0_1 8 MRL.p Pressure meas. range lower limit bar C 6:224_1 8 MRU.p Pressure meas. range upper limit bar C 6:225_1 8 p.F Pressure substitute value bar S 7:311_1 8 pb Pressure at base conditions bar C 7:312_1 8 Md.p Pressure mode - C 7:317 7 Typ.p Pressure sensor type - C 6:223 8 SNp Serial no. of pressure sensor - C 6:222 8 Eq1p Coefficient 1 of pressure equation - C 6:280 8 Eq2p Coefficient 2 of pressure equation - C 6:281 8 Eq3p Coefficient 3 of pressure equation - C 6:282 8 p1Adj Adjustment value 1 for pressure bar C 6:260_1 8 p2Adj Adjustment value 2 for pressure bar C 6:261_1 8 Prog Accept pressure adjustment - C 6:259 2 p.Amb Air pressure fixed value bar C 6:212_1 8 p.Mes Pressure meas. bar - 6:211_1 4 p.Abs Absolute pressure measurement bar - 6:210_1 4 p.MP Ø Measurement period mean pressure bar - 19:160 16 p.Mon max Month's maximum pressure bar - 21:160 16 p.Mon min Month's minimum pressure bar - 22:160 16

(Legends: see page 22)

p Press.

p is the pressure which is used for computing the conversion factor (→ 3.5) and hence the volume at base conditions (→ 3.1). In disturbance-free operation the measurement p.Abs (see below) is used: p = p.Abs. With a relevant disturbance (alarm), the substitute value p.F (see below) is used: p = p.F. In addition, disturbance quantities are then counted ( → 3.1, 3.2) and the message "p Alarm Lim." displayed (→ page 45 ). Relevant disturbances are:

− p.Abs is located outside of the set limits pMin and pMax (see below).

− With a connected encoder (Md.I1 = 5, → 3.10) no actual volume can be

measured for more than 20 seconds. Since the gas flow variation is not known for the time period and therefore no gas quantities can be assigned to the measured values of pressure and temperature, the correction occurs as disturbance quantities with substitute values for pressure and temperature.

(→ 4.5)

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p.LW Lower warning limit pressure p.UW Upper warning limit pressure

These values are used for monitoring the gas pressure p: When p exceeds the upper limit p.UW or falls below the lower limit p.LW, the message "p Warn Lim." is entered in St.7. (→page 47) Various actions can in turn be programmed for this message, such as for example, entry of the change of status in the logbook (→ 3.6) or activation of a signalling output (→ 3.11).

pMin Lower alarm limit pressure pMax Upper alarm limit pressure

The validity of the measured pressure p.Abs (see below) is checked based on these alarm limits. This monitoring does not occur when pMin = pMax. If p.Abs is located within the alarm limits, it is used as p (see below) for correction: p = p.Abs. If p.Abs is located outside the alarm limits, the substitute value p.F (see below) is used: p = p.F. In addition, disturbance quantities are counted in this case (→ 3.1,

3.2) and the message "p Alarm Lim." is displayed. (→ page 45)

MRL.p Pressure meas. range lower limit MRU.p Pressure meas. range upper limit

These details of the measurement range are used to identify the pressure sensor. They have no effect on the measurements.

p.F Pressure substitute value

If the measured pressure p.Abs is outside the alarm limits pMin and pMax (see below), p.F is used as pressure p for correction. p = p.F.

pb Pressure at base conditions

The pressure at base conditions is used for computing the conversion factor (→ 3.5) and hence the volume at base conditions.

Md.p Pressure mode

With Md.p = "1" the measured pressure p.Abs (see below) is used for correction, provided it does not violate the alarm limits.

With Md.p = "0" the fixed value (substitute value) p.F is always used for correction. No disturbance quantities are counted.

Typ.p Pressure sensor type

Here the designation of the pressure sensor is displayed which was selected in the service list with Sel.p. (→ 3.9).

SNp Serial no. of pressure sensor

Identification of the pressure sensor associated with the EK260.

Eq1p Coefficient 1 of pressure equation Eq2p Coefficient 2 of pressure equation Eq3p Coefficient 3 of pressure equation

The coefficients of the quadratic equation for calculating the pressure p.Mes from the raw pressure value Bin.p (→ 3.9):

p.Mes = Eq1p + Eq2p ž Bin.p + Eq3p ž Bin.p2 To adjust the pressure measurement circuit, the three coefficients of the quadratic

equation can either be found by the EK260 itself after entry of Prog (see below) or calculated and entered by the user.

The latter occurs based on three values for Bin.p and the corresp. set values.

Volume Conversion Device EK260

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Volume Conversion Device EK260

The EK260 itself assumes a linear characteristic and after the entry of Prog (see below) only determines the coefficients Eq1p and Eq2p. The third coefficient Eq3p remains unchanged. The standard value for Eq3p is "0".

p1Adj Adjustment value 1 for pressure p2Adj Adjustment value 2 for pressure Prog Accept pressure adjustment

These values are used for the adjustment of the pressure measurement circuit, i.e. for the internal computation of the equation coefficients for the pressure (see above). The adjustment takes place in three steps:

1. Apply measurement pressure 1 (= reference value 1) to the pressure sensor and enter as p1Adj.

2. Apply measurement pressure 2 (= reference value 2) to the pressure sensor and enter as p2Adj.

3. Enter Prog = "1" so that the EK260 calculates the equation coefficients.

After applying the measurement pressure, you should either wait about one minute each time before entering the adjustment or press <ENTER> number of times during the display of the pressure measurement p.Mes (see below) until the displayed value is stable.

Approx. 0.4 ž pMax and approx. 0.9 ž pMax should be selected as adjustment values.

p.Amb Air pressure fixed value p.Mes Pressure measurement p.Abs Absolute pressure measurement

p.Abs is the sum of p.Amb and p.Mes: p.Abs = p.Amb + p.Mes. "0" should be entered when using an absolute pressure sentors and the ambient

pressure when using a gauge pressure sensor. p.Mes is the absolute or gauge pressure depending on the pressure sensor. If the measured pressure p.Abs is within the alarm limits pMin and pMax (see

above), then it is used as the pressure p for correction: p = p.Abs.

p.MP Ø Measurement period mean pressure

p.MP Ø is the averaged value of all pressure measurements within the current measurement period.

At the end of each measurement period p.MP Ø is saved in the measurement period archive (→ 3.6).

p.Mon max Month's maximum pressure p.Mon min Month's minimum pressure

p.Mon max is the highest, p.Mon min the lowest of all pressure measurements within the current month.

By entering <ENTER> you can branch to the relevant submenu where the corresponding time stamp is displayed.

The maxima and minima of the last 15 months can be interrogated in the monthly archive 2 (→ 3.6).

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Elster EK260, 83 462 140 Operating Manual And Installation Instructions

Specifications and Main Features

Frequently Asked Questions

User Manual