Metreg MTM Series User manual

livinggas.

Metreg Technologies GmbH

MTM Turbine

Gas Meters

Manual

living

gas.

livinggas.living

www.metreg-technologies.de

MTM_Manual_EN_16.01.2015

©2014MetregTechnologiesGmbH•Design:www.reidelsoltaugrakdesign.de

MTM Turbine

Gas Meters

Manual

www.metreg-technologies.de

Table of Content

Manual MTM Turbine Gas Meters

1. Purpose of this Manual ................................................................................................ 5

2. Basic safety instructions ............................................................................................... 5

3. Declaration................................................................................................................. 6

4. Use and Scope ............................................................................................................ 6

5. DesignoftheMTMTurbineGasMeter........................................................................... 6

6. TechnicalData......................................................................................................... 7- 8

7. Installation ................................................................................................................. 8

8. MountingPosition/DirectionofFlow........................................................................... 9

9. Preliminarywork.................................................................................................. 10-11

10. Lubrication and Maintenance of the MTM Turbine Gas Meter ........................................ 12

11. Maintenance of the MTM Turbine Gas Meter ............................................................... 13

12. Commissioning of the MTM Turbine Gas Meter ............................................................ 13

13. DecommissioningoftheMTMTurbineGasMeter........................................................ 13

14. Pulse Generators .................................................................................................. 14-15

15. Pressure Measuring Point ........................................................................................... 16

16. Temperature Measuring Point ................................................................................... 16

17. Cleaning ................................................................................................................... 17

18. Transport and Storage ............................................................................................... 17

19. Annex A ................................................................................................................... 18

20. Annex B .................................................................................................................... 19

1. Purpose of this Manual

The instruction manual is dedicated to technical sta with adequate training and technical

knowledgeinthesectorofgasdistributionindustryaccordingtotheapplicabletechnical

lawsandrequirements.ForexamplestawhoareeducatedaccordingDVGWcodesof

practices G 492 and / or G495.

2. Basic safety instructions

Requirements for the personnel

Theoperationalstamustbequalied,instructedandauthorizedaccordingtheassigned

functions.Allserviceandmaintenanceworkshallbeperformedexclusivelybypersonswith

provenexpertknowledge,includingknowledgeofoccupationalsafetyandenvironmental

protection.

Protectiveactionshavetobedenedaccordingthelegalregulations.

Designated use

TheturbinemeterMTMisdesignedforscalorin-plantvolumemeasurementofcombustible

gasesofthe1.,2.and3.gasfamily(naturalgas,towngas,propane,butaneandothers),

puriedanddriedbiogasaswellasotherinert,non-aggressivegasesandnon-explosive

gases and gas mixtures. The permissible operating pressure range reaches up to 100 bar

dependentonthedesignofthemeter,thetemperaturerangerunsfromatleast+5°C

to+55°C.

The manufacturer is not liable for damage caused by improper or not-designated use.

Safety at work

Weartherequiredpersonalprotectiveequipmentaccordingtofederal/nationalregulations.

Operational safety

The device is permitted to operate in technical faultless and fail-safe condition only.

Responsible is the operator.

Product safety

Thismeasuringdeviceisdesigned,manufacturedandtestedaccordingthestate-of-art

demands. It meets all legal requirements and complies with the EC directives.

Themanufacturerconrmsthedevice-specicECDeclarationofConformitybyxing

theCEmarktothedevice.

The device has left the factory in perfect condition.

Warrantycouldbeextendedonlyincaseofproperinstallationandoperationaccording

to this manual.

3. Declaration

Declaration of Conformity(AnnexA)

4. Use and Scope

TheturbinemeterMTMisdesignedforscalorin-plantmeteringofnaturalgasandapproved

according the European requirements of EN12261. The MTM turbine meter is suitable to be

installedinhazardousareaofCategory2(Zone1)II2GcIICT4X.

TheMTMturbinemeterissuitableforthefollowinggases:

• Naturalgas,towngas,propane,butane,ethylene,air,nitrogen,noblegases

• Hydrogen(withreducedmeasuringrange)

• conditionedbiogasacc.DVGWG260forcombustiblegases

• Furthergasesonrequest.

TheMTMturbinemetercannotbeusedfor:Oxygen,Acetyleneandotheraggressivegasesas

well as for explosive gases or gas mixtures. The meter should not be used in applications with

the presence of strong pulsations. These conditions will result in an increased error and may

signicantlydecreasethemeter’slifetime.

5. Design of the MTM Turbine Gas Meter

Fig. 1: Sectional view of MTM turbine gas meter

Note: In case of failure or damage: Repairs are only allowed to be done

by authorized repair centers.

1Meter housing

2Turbine rotor

3LF-andanti-tamperingcontact

4Meter index head

5Flowconditioner

6Measuring unit

7Lubrication(oil)pump

6. Technical Data

Meter type MTM turbine meter

Approval:   MIDaccordingDINEN12261:2002

“Gas meters – Turbine gas meters”;

    OIMLR137-1&2:2012„Gasmeters“

Size: G 65 to G 4000

Nominal diameter:   DN50(3“)toDN300(12“)

Pressure rating: PN 10 up to PN 100 and ANSI CLASS 150 up to ANSI CLASS 600

Rangeability:   20:1orhigherdependingontheoperationpressure

Temperature ranges:

• gastemperature   +5°Cto+55°C

• ambienttemperature   +5°Cto+55°C

• storagetemperature   -25°Cto+55°C

Housing material: Aluminum,CarbonSteel

Max. operation pressure:   100bar(g

Accuracy: Qmin ≤ Q < Qt:±2.0%

Qt≤ Q ≤ Qmax:±1.0%

Rangeability Qt

  1:10,1:20 0,20Qmax

  1:30 0,15Qmax

1:50 0,15Qmax

Meter index

Numberofindexes: 1

Numberofdigitrollersperindex: 8

Meterindexhead:   Composite(optional:Aluminum)

Protectionclass: IP 65

Pulse generators

LF pulse generator:   1LF(reedcontact),add.1LFasoption

Contacttype:   makecontact(normallyopen)

Max.contactload:   10W

Max.switchingvoltage:   50VDC/200VDC

Max.switchingcurrent:   0.1A/0.5A

Resistance:   100Ωinseriestoreedcontact

fmax: 500Hz

HF-pulse generator: 1HF(inductivesensor,acc.NAMURspecs)

Supplyvoltage:   8.2VDC(internalresistanceof1kΩ)

Currentconsumption(sensorcovered): <1mA

Currentconsumption(sensorfree): >2.1mA

Max. switching frequency fmax:  1500Hz

Anti tampering contact: 1 Reed contact

Contacttype:   Normallyclosed

Max.contactload:   10W

Max.switchingvoltage:   175VDC

Max.switchingcurrent:   0.25A

Resistance:   100Ωinseriestoreedcontact

Rangeability and pulse weighting data

*)Theabsolutenumberofthepulsesdependsonthemetersizeandtheindividualmeteritself.

Thestatedvaluesareoftypicalsize.Exactvaluesdeterminedbycalibrationofthemeterare

located on the nameplate.

7. Installation

Recommendations and requirements for the installation of the MTM turbine meter:

•StraightInletpipe≥2DNandoutletpipe≥1DNisrequiredforscalmetering

in case of low level perturbations. In case of high level perturbations a straight

 inletpipe≥4DNisrequired.

•Avoid heavy vibrations and pulsations in the point of measurement.

 Installationofasuitablecompensatorcaneectivelydampdownthiskindofdisturbance.

•Drasticchangesinthegasowaswellasstronglypulsatingowwillincreasethe

measuring error. They arise for example during frequently switching on-o of solenoid

valves. The pressure impulses by opening the valve very fast may damage the ball bearings

of the turbine rotor and cause failure of the turbine meter.

•Filter(smallmeshsize)shouldbeinstalledupstreamofthemetertoprotectitfromany 

 contamination(suspendedparticles>50µm)duringstart-upandoperation.

DN G-type Qmin Qmax HF*)NF

[mm] [m3/h] [m3/h] [imp/m3] [imp/m3]

50 65 10 100 105000 10

80 100 8 160 26000 1

80 160 13 250 26000 1

80 250 20 400 26000 1

100 160 13 250 13500 1

100 250 20 400 13500 1

100 400 32 650 13500 1

150 400 32 650 5000 1

150 650 50 1000 5000 1

150 1000 80 1600 5000 1

200 650 50 1000 2200 1

200 1000 80 1600 2200 1

200 1600 130 2500 2200 1

250 1000 80 1600 1900 0,1

250 1600 130 2500 1900 0,1

250 2500 200 4000 1900 0,1

300 1600 130 2500 1200 0,1

300 2500 200 4000 1200 0,1

300 4000 320 6500 1200 0,1

•The gas should be dry. If condensate may be occur then the installation of a condensation

 trapupstreamofthemeterisrecommended(insomeltertypesitisintegrated).

In this case choose

o Flowdirectionfromtoptobottom

o DoNotinstallthemeteratthelowestpointofthepiping

Attention: The MTM turbine meter is not suitable for oxygen and other highly corrosive gases

as well as for explosive gases and gas mixtures.

8. Mounting Position / Direction of Flow

There are two positions of installation possible for the turbine gas meter:

Horizontal installation or vertical installation

Figure 2: Typical horizontal installation of the MTM turbine gas meter (recommended)

Figure 3: Typical vertical installation of the MTM turbine gas meter (only DN ≤ 150)

Notice: Preferably, the meter should be installed horizontally, with index head upward.

Ensure that the gas ow is in the same direction as shown by the arrow at the meter housing.

Isolation valve

Isolation

valve

Filter

MTM

Ventil

Isolation valve

Isolation

valve

Filter

MTM

Isolation valve

DN Pressure Flanges according DIN EN 1092-1

[mm] Class PN Hexagon screws and nuts

Min. operating Strength class Strength class

temperature screws nuts

of the screws

and nuts

  25 40  -10°C  5.6/8.8  5/8

  50 40  -10°C  5.6/8.8  5/8

  80 40  -10°C  5.6/8.8  5/8

  100 40  -10°C  5.6/8.8  5/8

  150 40  -10°C  5.6/8.8  5/8

  200 40  -10°C  5.6/8.8  5/8

  250 40  -10°C  5.6/8.8  5/8

  300 40  -10°C  5.6/8.8  5/8

9. Preliminary work

Before the installation of the meter make sure that the following steps has been observed:

1. Remove the plastic cover sheets at the inlet and outlet of the meter.

2.Inspectthemeterforcompleteness(e.g.plugs,providedoilvolume)

and for absence of any transport damages.

3. Cleantheangesurfaces(e.g.withpetroleum).

4. Checkbyblowingintothemeterthatturbinerotorrotateseasilyandstopssmoothly.

5. Priortothemeter’sinstallationcheckthatnocontaminations,condensate,dirtanddebris

are in the pipe. Especially the cleaning of elbows in vertical installations is important to

 preventdamageofthemeterbycontaminations,dirtanddebrispassing.Acone-shaped

 start-upsievemaybeinstalledforinitialoperation.After4-6weeksitshouldberemovedto

 avoidperturbationsoftheowprolewithresultingdecreaseoftheaccuracy.

6. Makesurethatthereisnointrusionofthesealingelementintothepipeduringinstallation

 andoperation(concentricmounting).

7. Checkthatinadditiontothemeter-lengththereisenoughinstallationspacefor

 thetwosealsbetweeninletandoutletanges.

8. The meter must be installed stress-free. Therefore in addition to point 7 observe strictly the

 properalignmentoftheturbinemeter’sinlettooutletaxiswiththeconnectingpipingaxis.

Necessary equipment for the meter installation:

1. Suitableandcerticatedgaskets:

•

DimensionsaccordingDINEN1514-1orDIN2690

2.ScrewsaccordingDINISO4014andASMEB1.1

3.NutsaccordingDINENISO4032andASMEB1.1

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