Elster Instromet TRZ, TRZ2, Q, TRZ-IFS Instruction Manual

Instruction Manual Turbine Gas Meter and Quantometers

Type TRZ  TRZ2  TRZ-IFS  Q

Contents

1. Intended use and field of application ....................................................................... 3

2. Technical data.......................................................................................................... 4

3. Operating location.................................................................................................... 5

4. Staff.......................................................................................................................... 6

5. Legal declarations.................................................................................................... 6

6. Installation / connection............................................................................................ 6

7. Pulse generators...................................................................................................... 7

8. Pressure test point ................................................................................................... 7

9. Temperature test points ........................................................................................... 8

10. Counter versions...................................................................................................... 9

11. Absolut ENCODER .................................................................................................. 9

12. Commissioning......................................................................................................... 10

13. Maintenance and lubrication .................................................................................... 11

14. Care and cleaning .................................................................................................... 11

15. Recycling and environmental protection .................................................................. 11

16. Annex A

ATEX approvals ....................................................................................................... 12

17. Annex B

Plastics used ............................................................................................................ 13

1. Intended use and field of application

This product is intended for calibratable volumetric metering using turbine gas meters and for non-calibratable volumetric metering using quantometers of

- flammable gases: natural gas/town gas/propane/butane/hydrogen

- non-flammable gases: air/nitrogen/inert gases

- suitable for use in potentially explosive atmospheres of Category 2 (Zone 1) of Class EX II 2 G c IIC

Other fields of application / media on request This product is not intended

- for metering of aggressive gases, e.g. biologically produced methane or sewage gases, oxygen, acetylene

Turbine gas meter with volume corrector

1 Meter housing 2 Measuring cartridge 3 Counter head 4 HF pulse generator 5 LF pulse generator 6 Pressure test point with three-way

cock 7 Temperature test point 8 Electronic volume corrector

Please contact your ELSTER After-Sales Service for assistance in commissioning, maintenance and installation of encoders, pulse generators and volume correctors for instance.

2. Technical data

- Turbine gas meters and quantometers in accordance with DIN EN 12261

Type TRZ / TRZ-IFS TRZ2 Q Size G 65 – G 16000 G 100 – G 1000 Q 65 – Q 16000 Nominal diameter

DN 50 – DN 600 DN 80 – DN 150

Rated pressure

PN 10 – 100 / ANSI 150 – 600

Housing material

Spheroidal graphite cast iron, cast steel,

welded steel Temperature ranges

- Gas

- Ambient

-20°C to +60°C

-20°C to +70°C

-10°C to +60°C

-20°C to +70°C

- Pulse generators LF pulse generator E1 (reed contact) HF pulse generator (in accordance with

DIN EN 50227)

max

= 24 V U

rated

= 8 V DC

max

= 50 mA

I ≥ 2.1 mA (exposed) I ≤ 1.2 mA (covered)

max

= 0.25 VA U < 5.9 V (exposed) U > 6.8 V (covered)

Ri = 100 Ω (series resistor) Ri = 1 kΩ

- Absolut ENCODER S1

Encoder S1

Counter Number of digit rollers 8 Temperature range -20°C to +60°C Safety class IP 67

NAMUR (II 2 G EEx ia IIC T4) or

SCR (II 2 G EEx ib IIB T4) or

Interfaces ATEX approval

M-Bus Meter types TRZ, Q all sizes LF pulse generator Optional or retrofittable INS-10, INS-11,

INS-12

max

= 24 V, I

max

= 50 mA, P

max

= 0.25 VA,

= 100 Ω (series resistor)

3. Operating location The length of the inlet and outlet section must be at least twice the nominal diameter

for reasons relating to measuring accuracy. The inlet section must be designed as a straight pipe section with the same nominal diameter as the meter.

Flow

disturbanc

resulting

from:

Typical inlet

sections

Pipe sections

installed at a

distance of

2D upstream

of the meter

inlet

TRZ

PTB approval

symbol

TRZ2 / TRZ-IFS

PTB approval

symbol

Minor disturbanc es

- single manifolds

- twin manifolds

- diffuser and

- contractor s

L ≥ 2D

DN 50 – DN 150 No flow conditioner

DN 200 – DN 600 Flow conditioner (e.g. BLN 1) No flow conditioner if L ≥ 5D

L ≥ 2D

No flow conditioner

L ≥ 5D

Major disturbanc es

- Pressure

regulators for gas

- Other restrictor devices

L ≥ 2D

Flow conditioner (e.g. BLN 1)

L ≥ 2D

No flow conditioner

L ≥ 5D

Flow

conditioner

recommended

If you ..

- wish to mix in odorisation agents or

- use solenoid valves, please always fit them only downstream of the meter. Otherwise, the device may be damaged.

The flow through the meter must be free of vibration/pulsation in order to avoid measuring errors. Compliance with the specified operating and ambient conditions as indicated on the type label is absolutely essential for safe operation of the meter.

The gas may not contain suspended particles > 50 µm. In addition, the gas must be dry. Otherwise, the meter may be damaged.

In the case of new installations, we recommend temporarily installing a cone strainer (mesh size 250 µm) to protect the meter. The strainer should be removed after approximately 4 weeks.

4. Staff

These Instructions are aimed at staff who have adequate specialist and technical knowledge (in Germany, for instance, in accordance with DVGW Codes of Practice 492 and 495 or comparable technical regulations) on the basis of their training and experience in the sector of energy and gas distribution.

5. Legal declarations

- Declaration of Conformity – see enclosure

- Period of validity of calibration – this is based on the regulations of the country

concerned, in which the turbine gas meter will be used.

- The calibration of turbine gas meters is only valid for the period of validity of calibration. Once this has elapsed, turbine gas meters may no longer be used for purposes which are subject to obligatory calibration.

- The period of validity of calibration can be extended if an official random sample shows that the measuring instruments used provide correct results.

6. Installation / connection

Warning! Never clean the plastic cover of the counter with a dry cloth owing to the risk of explosion resulting from electrostatic discharge! Please only ever use an

adequately moistened cloth! Before installation please ensure:

- that the protective caps and/or plastic sheeting is or are removed,

- that the meter and accessories have been inspected for transport damage and

- that the accessories have been checked for completeness (e.g. plug connectors, oil for initial filling).

You will require the following items for installation

- Suitable seals/gaskets for the relevant gases, e.g. in accordance with the following table:

(mm) 50 62 80 100

100 125 150 178 200 223 250 278 300 334 400 412 500 506

600 600

The following seals and gaskets, amongst others, are suitable:

- Flat seals

- Spiral-wound gaskets and

- Grooved seals and gaskets

- suitable connection elements in accordance with the tables below for operation:

Hexagon screws and nuts for flanges in accordance with DIN EN 1092-1

Material / strength class

Screw Nut

Operating limits Standards

5.6 5

8.8 8

up to 40 bar

down to -10°C

DIN ISO 4014 DIN ISO 4032

CK 35 CK 35 up to 100 bar

down to -10°C

DIN 2510

Stud bolts with continuous thread for flanges in accordance with ANSI/ASME B 16.5

Material / strength class

Bolt Nut

Operating limits Standards

A 193 B6 A 194

Gr. 6

up to 100 bar down to 0°C

A 193 B7 A 194

Gr. 2H

up to 100 bar down to -50°C

ANSI/ASME B 1.1

Other equivalent materials may also be used.

7. Pulse generators LF pulse generators (Type IN-S) may be plugged onto the side of

the counter cover for volume pulse output to external devices (e.g. a volume corrector). Fit the pulse generator (if required) as follows:

- Slide both guides of the IN-S pulse generator into the guide slot on the counter cover until the guides can be heard to engage (clicking sound).

- Assign the terminals on the plug in accordance with the pin assignment on the meter/pulse generator.

- Use a screened cable to the external device.

You can use HF pulse generators for higher frequencies (Types A1R and A1S) (if available). HF pulse generators are screwed into the meter housing pressure-tight. However, the connection plug can be turned.

- Assign the terminals on the plug in accordance with the pin assignment on the unit.

- Use a screened cable to the external device.

Pulse generators for subsequent installation are also available. HF pulse generators (Type A1S) can, however, be fitted only by the After-Sales Service. By contrast, you can connect the plug yourself, as described above.

Warning! All pulse generators are intrinsically safe and may be connected only to intrinsically safe circuits if used in potentially explosive atmospheres. The safety

barriers must comply with the requirements of ignition protection EEx ib IIC (see also Marking in Annex A).

8. Pressure test point

A straight male coupling in accordance with DIN 2353 is pre-fitted on the meter housing for connection of a pressure sensor for instance. The pressure test point is marked p

and is designed for connection of d= 6 mm steel

tube in accordance with DIN EN 10305-1 (e.g. steel grade E 235).

Important: Do not connect the straight male coupling to pipes made of stainless steel or pipes made of nonferrous materials. Note: We recommend that you use original Parker-Ermeto pipe unions. Functional safety and reliability are ensured only if the material combination of the union component and the pipe are intermatched. We recommend that you contact our After-Sales Service for conversion work and when installing additional devices.

9. Temperature test points

You can use a maximum of two temperature sensors for measuring the gas temperature in the meter housing for the meter sizes listed

in the table below (quantometers cannot be fitted with thermowells in the meter housing; on TRZ//TRZ-IFS/TRZ2 thermowells are optional up to nominal diameter DN 200):

Max. sens or ø

TRZ DN

Housing material

PN 10/16 EBL

PN 25/40 EBL

ANSI 150 EBL

ANSI 300 EBL

ANSI 600 EBL

GGG - - - - - 50 GS - - - - GGG 45 - 45 - - 80 GS 45 - 45 - GGG 50 - 50 - - 100 GS 50 - 50 - GGG 50 - 50 - - 150 GS 50 - 50 - GS 58 - 58 - - 200 St. - 67 - - GS 95 - 95 - - 250

St. 160 160 160 160 160 300 St. 160 160 160 160 160 400 St. 160 160 160 160 160 500 St. 160 160 160 160 160

6 mm

600 St. 160 160 160 160 160

GGG -> Spheroidal graphite cast iron; GS -> Cast steel; St. -> Welded steel EBL -> Rounded installation length of the thermowell in mm

Note that temperature measurement on measuring systems in the open air may be influenced by the ambient temperature. For this reason, the metering elements outside the pipe should be adequately insulated against ambient temperature influences. In order to achieve optimum thermal conduction, you should also always fill the thermowell(s) with a heat-conductive fluid or paste. If no temperature test points in the meter housing are scheduled, the temperature must be measured in the pipe downstream of the turbine gas meter at a distance of up to 3 x DN, but max. 600 mm away.

10. Counter versions

The meter can be equipped with various counter versions:

Counter head S1

- This is the standard version with an 8-digit mechanical roller counter

- Provides universal read-off

- Can be rotated up to 355° about its axis

- Suitable for outdoor installation

- Designed for LF pulse generators which can plugged on from the

outside and which can be exchanged on site

Counter head S1V

- This has the same features as counter head S1

- The mechanical roller counter can be read off from the top Counter head version II

- Provides universal read-off

- Can be rotated up to 355° about its axis

- Features a mechanical index drive pointing upwards in accordance with EN 12261

- LF pulse generator which is fitted and which cannot be exchanged on site

IMPORTANT! Version II is not suitable for outdoor installation.

11. Absolut Encoder S1

- This has the same features as counter head S1

- Can be used as main counter on gas meters

- Available as a top-mounted unit (transmitter unit) on meters with mechanical index drive (counter head version II)

- The encoder is suitable for connection to a series-connected additional device (volume corrector, datalogger or bus system) in potentially explosive atmospheres (see table: Technical data). A device connected to the terminal box must feature at least the following approval as a related equipment for this:

[ EEx ia IIC ] for version with Namur interface [ EEx ib IIC ] for version with SCR interface

Connection of the Absolut ENCODER S1 unit to the mechanical index drive of the meter

- Connect the connector of the top-mounted unit to the mechanical index drive of counter head version II.

- Use a locking screw to secure the encoder top-mounted unit against pulling out.

- The locking screw must be lead-sealed for applications requiring mandatory calibration.

- If you wish to synchronise the encoder with the counter reading of your operating meter

after installation or conversion, you will require the Instructions “Encoder synchronisation” and a special tool. We recommend that you contact our ELSTER After-Sales Service in such cases.

Connection of the encoder

- Use only screened cable to connect the encoder and ensure that the pin assignment is correct (see sticker next to the cover of the terminal box).

- When connecting the Namur interface, ensure that the 2-wire connection has the correct polarity. The SCR interface is independent of the polarity.

Then install the meter

- gas-tight,

- with the supplied accessories,

- only in flow direction (as marked by an arrow on the meter housing),

- only unstressed and

- preferably in horizontal position with the counter at the top. The permitted installation/operating positions of the meter are specified on the meter housing in accordance with the designations “H, V or H/V” represented in accordance with DIN EN 12261. If you have specified the installation or operating position when ordering, all attachments will have been fitted in accordance with the installation position ex-works. If you wish to install the unit vertically at a later point and if an oil pump is present, the oil pump must also be fitted vertically. If this is not the case, you must turn the oil pump and its oil connection line and any other attachments, e.g. volume corrector, through 90° before installing the meter. We recommend that you contact our After-Sales Service for such conversion work.

- weatherproof.

- When fitting the seals and gaskets, ensure that they are aligned concentrically and do not project into the flow channel.

12. Commissioning

For meters without oil pump, continue with point “Placing the system into operation”. Meters with oil pump must be provided with initial lubrication

Before commissioning:

- First open the cover on the oil supply tank.

- Fill the oil supply tank with the supplied oil.

- The oil quantity is sufficient when the oil level reaches around ¾ of the tank volume.

- Operate the oil pump as instructed in Section “Maintenance and lubrication” and only then close the oil supply tank.

Placing the system into operation

In order not to damage the meter,

- slowly fill the system until operating pressure is reached.

- The pressure rise may not exceed 350 mbar/s. You should also use a bypass line for

filling (recommendation: 12 mm pipe diameter).

- Do no exceed the measuring range even briefly!

- Conduct a tightness test!

Important! Dirt particles, such as welding beads, swarf and other foreign bodies, may be contained in the gas for a short while after installation.

For this reason, always fit a coarse filter in order to avoid damage to the counter. Do not forget to remove the coarse filter after approx. 4-6 weeks since, should it become

saturated, this would produce an obstacle to flow.

13. Maintenance and lubrication

Meters without oil pump are maintenance-free. Meters with oil pump must be lubricated.

- You must open the cover of the supply tank before operating the oil pump’s hand lever.

- Ensure that the supply tank has an adequate quantity of oil. Use the filter insert in the supply tank when topping up with oil.

- Operate the oil pump by hand by fully pulling the hand lever down applying uniform pressure. Note that one pull corresponds to one stroke of the pump’s piston.

- After operation, you must re-close the supply tank firmly.

Lubrication instructions for turbine gas meters and quantometers

in the case of dry natural gas

DN 50 – DN 200 DN 250 – DN 600

4 – 6 strokes every 3 – 4 months 6 – 10 strokes every 3 – 4 months

10 strokes on commissioning

(initial lubrication)

15 strokes on commissioning

(initial lubrication)

Permitted lubricants:

Shell Risella 917

Shell Tellus T 15

Other oils not containing resin and acid, with a viscosity of approx. 30 cStokes at 20°C,

solidification point lower than -30°C, or equivalent oils may be used.

Important!

- Always fill the supply tank with oil in good time to prevent air entering the pipe system.

- Protect the oil pump against the ingress of water by keeping the oil tank firmly closed.

14. Care and cleaning

- Clean off dirt on the meter only with a damp cloth. Any media gentle on the applicable materials can be used as cleaning media.

- Do not clean the transparent tank of the oil pump with solvent.

15. Recycling and environmental protection

ELSTER has reduced the transport packagings of the measuring instruments to the bare essentials. Packaging materials are always selected consistently with a view to recycling. The cardboard items used constitute secondary raw materials for the paperboard and paper industry. The Instapak® foam packaging items are recyclable and can be reused. Plastic sheeting and strips/bands are also made of recyclable plastic. At ELSTER, subsequent recycling and disposal are already elements of the product development process. When selecting the materials, we allow for reusability of the materials, suitability of materials and subassemblies for dismantling and separation, and the risks of environmental pollution and health risks when recycling and dumping on landfill sites. The turbine gas meters and quantometers mainly consist of metallic materials which can be melted down again in steelworks and metallurgical plants and which can thus be reused a virtually unlimited number of times. The plastics used are listed in Annex B so that sorting and separating of the materials for the purposes of subsequent recycling is possible.

16. Annex A

The pulse generators used in turbine gas meters have their own ATEX approvals (Ex approvals) and are marked in accordance with the table below:

Pulse

generator,

Type

Designation of

the sensors

EC Type-Examination

Certificate

Directive 94/9/EC

Identification of the

pulse generators

Manufacturer

Reed contacts: KSK-1A81-0810 KSK-1C97-1020 2322 KSK-1B90UBV09904

TÜV 03 ATEX 2123

Ex marking:

II 2 G EEx ia IIC T4

Elster GmbH 55252 Mainz-Kastel Germany

LF pulse generators

IN-S.. PCB E1

IN-W11

Wiegand sensor: Series 2000 magnetic sensor

FTZÚ 04 ATEX 0277

Ex marking:

II 2 G EEx ia IIC T6/T4

TÜV 01 ATEX 1776

Ex marking:

II 2 G EEx ia IIC T4

Premagas s.r.o. 91601 Stará Turá Slovakia

Elster GmbH 55252 Mainz-Kastel Germany

Inductive proximity switch: N 95000

PTB 01 ATEX 2192

Ex marking:

II 1 G EEx ia IIC T6

IFM Electronic GmbH 45127 Essen Germany

HF pulse generators

A1 R, A1 S

Inductive proximity switches: NJ 1,5-10 GM-N NJ 1,5-8 GM-N (old version) (Both versions with identical electrical system)

*) NJ 3,5-12 GKN (old version) (Same electr. system as NJ 4-12 GK-N) NJ 1,5-6,5-N (TRZ DN 50 only)

PTB 00 ATEX 2048 X

Ex marking:

II 1 G EEx ia IIC T6

PTB 00 ATEX 2048 X

Ex marking:

II 2 G EEx ia IIC T6 *

*) NJ 3,5-12 GK-N

Pepperl + Fuchs GmbH 68307 Mannheim Germany

17. Annex B

Plastics used in turbine gas meters and quantometers, see also point 15 “Recycling and environmental protection”

Plastic parts

Abbreviation Chem. name

Pulse generators PA 6.6 Polyamide Flow bodies PAMXD6 Polyarylamide Gears and small parts POM Polyoxymethylene Counter cover and counter PC Polycarbonate Counter bottom section PPA Polyphthalamide Digit rollers PA 12

PPO

Polyamide Polyphenylene oxide

Elster Instromet TRZ, TRZ2, Q, TRZ-IFS Instruction Manual

Specifications and Main Features

Frequently Asked Questions

User Manual