Combi module M-bus and pulses

This module is used if the ULTRAHEAT 2WR5 is connect-ed to an M-bus system and simultaneously has to passon pulses to systems or district heating controllers forlimitation and control.

Combi module for pulses and 20-mA current loop

This module is a combination of a 20-mA module anda pulse module.

Modem moduleIntegrated analogue modem without separate supply,can be called and can call itself, password protection,maintenance-free.

Unique and Universal –The ULTRAHEAT 2WR5 Heat Meter

Integrated service unit

The 2WR5 features an integrated service unit – noadditional equipment is required. The extensive self-diagnostics facilitates rectification of any problemswith the unit or system.

Communication is standard

The standard meter is already equipped with an opticalinterface for communication and can be read or pro-grammed via a PC or hand-held terminal. As an optionit is possible to expand the unit with reaction-freemodules. The 2WR5 automatically detects whichmodule is plugged in. Adaptations in parameterizationare therefore not required.

20-mA module (current loop):

This module allows you to read the heat meter with ahand-held terminal or a PC via a cable up to 100 m inlength (front gate reading).

M-bus moduleUp to 250 heat meters can be connected in a networkvia a 2-wire cable using this module and read from acentral location.

Pulse moduleThis module contains either two pulse outputs that areelectrically isolated from the heat meter – one forenergy and the other for volume –, or status informa-tion, e.g. to control rolling mills, or one fast pulseoutput, e.g. to control closed-loop controllers. Withthe higher pulse rates, a distinction is made betweentypes of pulses (linear/scaled), pulse duration, and thequantity transferred.

[

[

[[

[

[

[

[

Subject to change without prior notice

Order No. UH 702-101Printed in Germany259900 / 76025 Ke / Schö 04032.

Landis+Gyr GmbHHumboldtstrasse 6490459 NürnbergGermanyInternet: www.landisgyr.com

Communication – A standard feature

Good for the environment,good for quality.Certified to:DIN EN ISO 14001 andDIN EN ISO 9001

* in preparation **preliminary

2WR539

2.5

5.0

0.025

5.0

190

DN20

PN25

140

2WR546

3.5

7.0

0.035

7.0

260

DN25

PN25

65

2WR552

6.0

12

0.06

12

260

DN25

PN25

190

2WR561

10

20

0.1

20

300

DN40

PN25

120

2WR565

15

30

0.15

30

270

DN50

PN25

120

2WR570

25

50

0.25

50

300

DN65

PN25

70

2WR574

40

80

0.4

80

300

DN80

PN25

120

2WR582

60

120

0.6

120

360

DN100

PN16

140

2WR583

60

120

0.6

120

360

DN100

PN25

140

m3/h

m3/h

m3/h

l/h

mm

–

bar

mbar

2WR522

1.5

3.0

0.015

3.0

110

G3/4 B

PN25

130

2WR507

0.6

1.2

0.006

1.2

190

G1B

PN16

55

2WR509

0.6

1.2

0.006

1.2

190

G1B

PN25

55

2WR517

1.0

2.0

0.01

2.0

190

G1B

PN16

140

2WR519

1.0

2.0

0.01

2.0

190

G1B

PN25

140

2WR523

1.5

3.0

0.015

3.0

190

G1B

PN16

130

2WR525

1.5

3.0

0.015

3.0

190

G1B

PN25

130

2WR538

2.5

5.0

0.025

5.0

190

G1B

PN16

140

2WR540

2.5

5.0

0.025

5.0

190

G1B

PN25

140

2WR545

3.5

7.0

0.035

7.0

260

G11/4 B

PN16

65

2WR547

3.5

7.0

0.035

7.0

260

G11/4 B

PN25

65

2WR550

6.0

12

0.06

12

260

G11/4 B

PN16

190

2WR550

10

20

0.1

20

300

G2B

PN16

120

m3/h

m3/h

m3/h

l/h

mm

–

bar

mbar

2WR536*

2.5

5.0

0.025

5.0

130

G1B

PN16

190**

2WR537*

2.5

5.0

0.025

5.0

130

G1B

PN25

190**

[

[

[

[

The ULTRAHEAT 2WR5 –Reliability you can count on

Constant in measurement

The high resistance during measurement permitsrecalibration on a statistical basis and new service lives(> 15 years) – lowering the costs for heat measurementconsiderably. We supply the ULTRAHEAT 2WR5 for allcommon nominal flow rates from 0.6 to 60 m3/h and

the associated mounting lengths.

Europe-wide approval

The ULTRAHEAT has Europe-wide approvaland complies with the stringent EN

requirements 1434 Class 2. It thereforemakes a contribution to confidence in

heat billing and avoids the expenseof dealing with meter failures.

Easy to operate

Whatever the volumes to bemeasured – the electronics andthe measurement principle andtherefore operation are alwaysthe same. That makes for morereliable handling. It is also pos-sible to read out data or makesettings easily via a hand-heldterminal or PC. The optical in-terface is used for that purpose.The ULTRAHEAT also features

self-monitoring. It provides earlywarning if the heating water is

contaminated. Standard mountinglengths and flow rates also permit

simple replacement of old units.

Economic to run

Long life, minimum failure rate, measurement stabilityand dynamics – all these features make this heat meterso economic to run. And accurate quantity measure-ment even for the lowest consumption brings addition-al revenue to our customers. The low pressure lossreduces the pump power. That means lower powerconsumption and fewer pumps.

A protected investment – way into the future

The communication modules make systemintegration possible: All modules can be addedsubsequently without a negative reactionand during operation. Functions liketariffs or the ”low-energy house” permitfuture billing variants of the energy con-sumption.

Quality you can rely on

Like its predecessors, the ULTRAHEAT2WR5 measures absolutely accurately andstably for many years. This has been prov-en by numerous tests on random sam-ples in various countries and in tests byindependent bodies. Its wear-free methodof operation and use of robust materialsensure a long life. And the newULTRAHEAT 2WR5 is the only heat meterin the world whose volume measuring unitis made of pure metal even for small flowquantities (qp = 0.6 to 2.5). Plastic parts havebeen eliminated.

[

[

[ Flow range

The mounting lengths correspond to the standarddimensions of vane-type meters – simple replacementis ensured. In addition to the permanent temperatureof 130 °C, an overtemperature of 150 °C is permissiblefor up to 2000 hours. Commissioning work, failures, andfast heating are therefore no problem.

Low pressure loss

The pressure loss on the ULTRAHEAT 2WR5 is muchlower than in conventional vane-type meters and isway below 200 mbar.

The heat meter can be mounted both vertically and

horizontally – filters or straight inlet and outlet sections

are not required. The straight measuring tube keeps

the pressure loss low and prevents the accumulation

of air and dirt.

The electronic unit can be mounted on the tube itself

or separately on a wall.

ULTRAHEAT 2WR5Technical data

Valid for Germany only:

Following a decision by the PTB (German Federal Insti-tute of Physics and Metrology), the values for theminimum flow qi will change to twice the value statedin our documentation for qp 0.6 m3/h to 2.5 m3/h.

2WR508

0.6

1.2

0.006

1.2

190

DN20

PN25

55

2WR518

1.0

2.0

0.01

2.0

190

DN20

PN25

140

2WR524

1.5

3.0

0.015

3.0

190

DN20

PN25

130

ULTRAHEAT 2WR5

Nominal flow rate qp

Maximum flow rate qs

Minimum flow rate qi

Response limit approx.

Mounting length

Thread

Nominal pressure

Pressure drop ∆p at qp

Flanged connection

2WR505

0.6

1.2

0.006

0.006

110

G3/4 B

PN16

140

2WR506

0.6

1.2

0.006

1.2

110

G3/4 B

PN25

140

2WR515

1.0

2.0

0.01

2.0

110

G3/4 B

PN16

60

2WR516

1.0

2.0

0.01

2.0

110

G3/4 B

PN25

60

2WR521

1.5

3.0

0.015

3.0

110

G3/4 B

PN16

130

ULTRAHEAT 2WR5

Nominal flow rate qp

Maximum flow rate qs

Minimum flow rate qi

Response limit approx.

Mounting length

Thread

Nominal pressure

Pressure drop ∆p at qp

Threaded connection

Mounting – made easy

[

[

[

[

The ULTRAHEAT 2WR5 –Reliability you can count on

Constant in measurement

The high resistance during measurement permitsrecalibration on a statistical basis and new service lives(> 15 years) – lowering the costs for heat measurementconsiderably. We supply the ULTRAHEAT 2WR5 for allcommon nominal flow rates from 0.6 to 60 m3/h and

the associated mounting lengths.

Europe-wide approval

The ULTRAHEAT has Europe-wide approvaland complies with the stringent EN

requirements 1434 Class 2. It thereforemakes a contribution to confidence in

heat billing and avoids the expenseof dealing with meter failures.

Easy to operate

Whatever the volumes to bemeasured – the electronics andthe measurement principle andtherefore operation are alwaysthe same. That makes for morereliable handling. It is also pos-sible to read out data or makesettings easily via a hand-heldterminal or PC. The optical in-terface is used for that purpose.The ULTRAHEAT also features

self-monitoring. It provides earlywarning if the heating water is

contaminated. Standard mountinglengths and flow rates also permit

simple replacement of old units.

Economic to run

Long life, minimum failure rate, measurement stabilityand dynamics – all these features make this heat meterso economic to run. And accurate quantity measure-ment even for the lowest consumption brings addition-al revenue to our customers. The low pressure lossreduces the pump power. That means lower powerconsumption and fewer pumps.

A protected investment – way into the future

The communication modules make systemintegration possible: All modules can be addedsubsequently without a negative reactionand during operation. Functions liketariffs or the ”low-energy house” permitfuture billing variants of the energy con-sumption.

Quality you can rely on

Like its predecessors, the ULTRAHEAT2WR5 measures absolutely accurately andstably for many years. This has been prov-en by numerous tests on random sam-ples in various countries and in tests byindependent bodies. Its wear-free methodof operation and use of robust materialsensure a long life. And the newULTRAHEAT 2WR5 is the only heat meterin the world whose volume measuring unitis made of pure metal even for small flowquantities (qp = 0.6 to 2.5). Plastic parts havebeen eliminated.

[

[

[ Flow range

The mounting lengths correspond to the standarddimensions of vane-type meters – simple replacementis ensured. In addition to the permanent temperatureof 130 °C, an overtemperature of 150 °C is permissiblefor up to 2000 hours. Commissioning work, failures, andfast heating are therefore no problem.

Low pressure loss

The pressure loss on the ULTRAHEAT 2WR5 is muchlower than in conventional vane-type meters and isway below 200 mbar.

The heat meter can be mounted both vertically and

horizontally – filters or straight inlet and outlet sections

are not required. The straight measuring tube keeps

the pressure loss low and prevents the accumulation

of air and dirt.

The electronic unit can be mounted on the tube itself

or separately on a wall.

ULTRAHEAT 2WR5Technical data

Valid for Germany only:

Following a decision by the PTB (German Federal Insti-tute of Physics and Metrology), the values for theminimum flow qi will change to twice the value statedin our documentation for qp 0.6 m3/h to 2.5 m3/h.

2WR508

0.6

1.2

0.006

1.2

190

DN20

PN25

55

2WR518

1.0

2.0

0.01

2.0

190

DN20

PN25

140

2WR524

1.5

3.0

0.015

3.0

190

DN20

PN25

130

ULTRAHEAT 2WR5

Nominal flow rate qp

Maximum flow rate qs

Minimum flow rate qi

Response limit approx.

Mounting length

Thread

Nominal pressure

Pressure drop ∆p at qp

Flanged connection

2WR505

0.6

1.2

0.006

0.006

110

G3/4 B

PN16

140

2WR506

0.6

1.2

0.006

1.2

110

G3/4 B

PN25

140

2WR515

1.0

2.0

0.01

2.0

110

G3/4 B

PN16

60

2WR516

1.0

2.0

0.01

2.0

110

G3/4 B

PN25

60

2WR521

1.5

3.0

0.015

3.0

110

G3/4 B

PN16

130

ULTRAHEAT 2WR5

Nominal flow rate qp

Maximum flow rate qs

Minimum flow rate qi

Response limit approx.

Mounting length

Thread

Nominal pressure

Pressure drop ∆p at qp

Threaded connection

Mounting – made easy

Equipped for the future –

The ULTRAHEAT 2WR5 heat meter

The 2WR5 is reliable, economic,

convenient. And it is future-proof:

The ULTRAHEAT® 2WR5 heat meter from

Landis+Gyr offers all the properties

of a modern unit for metering the

heat consumption. Because it measures

the flow using wear-free ultrasonic

technology and without moving parts.

A patented procedure for ultrasonic

signal routing makes the ULTRAHEAT

one of the most accurate meters

available today. And it makes it

independent of the flow profile,

the mounting conditions, and the

water temperature.

Functions for a full overview

The heat meter measures the flow and returntemperature and the flow of the heating waterwith measurement dynamics of 1:100 in flow measure-ment. It registers both the current values for power,flow rate, and temperature and their maximumvalues over a set measurement period.

On a preprogrammed date, the ULTRAHEAT 2WR5reads itself and stores the value which can be read offthe display. Tariff registers permit variable billing meth-ods. Tariffs can depend on the flow rate, the power,the temperature difference, or the return temperature.As an alternative, the supplied or returned quantity ofthermal energy can be metered. The ULTRAHEATcontinually stores 36 monthly values for thermalenergy, volume, maximum power, maximumflow rate of the tariff register, and error days.

The ULTRAHEAT can be used for many applications. It

is the ideal heat meter for transfer stations in district

heating networks, for large heating systems in

apartment blocks and housing estates, for low-energy

houses, but also for cooling plants 6º/12º with water.

It not only functions as a classic heat or cold meter

but also as a combined heat and cold meter, as a

condensate meter, or, if necessary, as an energy

evaluating warm water meter (Geyser meter), or

as a pure flow sensor. An overload up to twice

the nominal range even over the entire life of

the unit is no problem for the ULTRAHEAT.

[

[[ Displays and settings on the calculator

The displays are subdivided into a customer area anda service area with different display loops. It is possibleto select the dividing line between the two areas andto have the content and sequence programmedbefore delivery.

Modular power supply

The heat meter can be powered with 230 V and110 V line voltage, 24 V direct or alternating voltage,or with a battery (with a life of 6, 9, or 11 years). Thebattery is changed without tools.

Applications and functions –The multitalented ULTRAHEAT 2WR5

Equipped for the future –

The ULTRAHEAT 2WR5 heat meter

The 2WR5 is reliable, economic,

convenient. And it is future-proof:

The ULTRAHEAT® 2WR5 heat meter from

Landis+Gyr offers all the properties

of a modern unit for metering the

heat consumption. Because it measures

the flow using wear-free ultrasonic

technology and without moving parts.

A patented procedure for ultrasonic

signal routing makes the ULTRAHEAT

one of the most accurate meters

available today. And it makes it

independent of the flow profile,

the mounting conditions, and the

water temperature.

Functions for a full overview

The heat meter measures the flow and returntemperature and the flow of the heating waterwith measurement dynamics of 1:100 in flow measure-ment. It registers both the current values for power,flow rate, and temperature and their maximumvalues over a set measurement period.

On a preprogrammed date, the ULTRAHEAT 2WR5reads itself and stores the value which can be read offthe display. Tariff registers permit variable billing meth-ods. Tariffs can depend on the flow rate, the power,the temperature difference, or the return temperature.As an alternative, the supplied or returned quantity ofthermal energy can be metered. The ULTRAHEATcontinually stores 36 monthly values for thermalenergy, volume, maximum power, maximumflow rate of the tariff register, and error days.

The ULTRAHEAT can be used for many applications. It

is the ideal heat meter for transfer stations in district

heating networks, for large heating systems in

apartment blocks and housing estates, for low-energy

houses, but also for cooling plants 6º/12º with water.

It not only functions as a classic heat or cold meter

but also as a combined heat and cold meter, as a

condensate meter, or, if necessary, as an energy

evaluating warm water meter (Geyser meter), or

as a pure flow sensor. An overload up to twice

the nominal range even over the entire life of

the unit is no problem for the ULTRAHEAT.

[

[[ Displays and settings on the calculator

The displays are subdivided into a customer area anda service area with different display loops. It is possibleto select the dividing line between the two areas andto have the content and sequence programmedbefore delivery.

Modular power supply

The heat meter can be powered with 230 V and110 V line voltage, 24 V direct or alternating voltage,or with a battery (with a life of 6, 9, or 11 years). Thebattery is changed without tools.

Applications and functions –The multitalented ULTRAHEAT 2WR5

Equipped for the future –

The ULTRAHEAT 2WR5 heat meter

The 2WR5 is reliable, economic,

convenient. And it is future-proof:

The ULTRAHEAT® 2WR5 heat meter from

Landis+Gyr offers all the properties

of a modern unit for metering the

heat consumption. Because it measures

the flow using wear-free ultrasonic

technology and without moving parts.

A patented procedure for ultrasonic

signal routing makes the ULTRAHEAT

one of the most accurate meters

available today. And it makes it

independent of the flow profile,

the mounting conditions, and the

water temperature.

Functions for a full overview

The heat meter measures the flow and returntemperature and the flow of the heating waterwith measurement dynamics of 1:100 in flow measure-ment. It registers both the current values for power,flow rate, and temperature and their maximumvalues over a set measurement period.

On a preprogrammed date, the ULTRAHEAT 2WR5reads itself and stores the value which can be read offthe display. Tariff registers permit variable billing meth-ods. Tariffs can depend on the flow rate, the power,the temperature difference, or the return temperature.As an alternative, the supplied or returned quantity ofthermal energy can be metered. The ULTRAHEATcontinually stores 36 monthly values for thermalenergy, volume, maximum power, maximumflow rate of the tariff register, and error days.

The ULTRAHEAT can be used for many applications. It

is the ideal heat meter for transfer stations in district

heating networks, for large heating systems in

apartment blocks and housing estates, for low-energy

houses, but also for cooling plants 6º/12º with water.

It not only functions as a classic heat or cold meter

but also as a combined heat and cold meter, as a

condensate meter, or, if necessary, as an energy

evaluating warm water meter (Geyser meter), or

as a pure flow sensor. An overload up to twice

the nominal range even over the entire life of

the unit is no problem for the ULTRAHEAT.

[

[[ Displays and settings on the calculator

The displays are subdivided into a customer area anda service area with different display loops. It is possibleto select the dividing line between the two areas andto have the content and sequence programmedbefore delivery.

Modular power supply

The heat meter can be powered with 230 V and110 V line voltage, 24 V direct or alternating voltage,or with a battery (with a life of 6, 9, or 11 years). Thebattery is changed without tools.

Applications and functions –The multitalented ULTRAHEAT 2WR5

[

[

[

[

The ULTRAHEAT 2WR5 –Reliability you can count on

Constant in measurement

The high resistance during measurement permitsrecalibration on a statistical basis and new service lives(> 15 years) – lowering the costs for heat measurementconsiderably. We supply the ULTRAHEAT 2WR5 for allcommon nominal flow rates from 0.6 to 60 m3/h and

the associated mounting lengths.

Europe-wide approval

The ULTRAHEAT has Europe-wide approvaland complies with the stringent EN

requirements 1434 Class 2. It thereforemakes a contribution to confidence in

heat billing and avoids the expenseof dealing with meter failures.

Easy to operate

Whatever the volumes to bemeasured – the electronics andthe measurement principle andtherefore operation are alwaysthe same. That makes for morereliable handling. It is also pos-sible to read out data or makesettings easily via a hand-heldterminal or PC. The optical in-terface is used for that purpose.The ULTRAHEAT also features

self-monitoring. It provides earlywarning if the heating water is

contaminated. Standard mountinglengths and flow rates also permit

simple replacement of old units.

Economic to run

Long life, minimum failure rate, measurement stabilityand dynamics – all these features make this heat meterso economic to run. And accurate quantity measure-ment even for the lowest consumption brings addition-al revenue to our customers. The low pressure lossreduces the pump power. That means lower powerconsumption and fewer pumps.

A protected investment – way into the future

The communication modules make systemintegration possible: All modules can be addedsubsequently without a negative reactionand during operation. Functions liketariffs or the ”low-energy house” permitfuture billing variants of the energy con-sumption.

Quality you can rely on

Like its predecessors, the ULTRAHEAT2WR5 measures absolutely accurately andstably for many years. This has been prov-en by numerous tests on random sam-ples in various countries and in tests byindependent bodies. Its wear-free methodof operation and use of robust materialsensure a long life. And the newULTRAHEAT 2WR5 is the only heat meterin the world whose volume measuring unitis made of pure metal even for small flowquantities (qp = 0.6 to 2.5). Plastic parts havebeen eliminated.

[

[

[ Flow range

The mounting lengths correspond to the standarddimensions of vane-type meters – simple replacementis ensured. In addition to the permanent temperatureof 130 °C, an overtemperature of 150 °C is permissiblefor up to 2000 hours. Commissioning work, failures, andfast heating are therefore no problem.

Low pressure loss

The pressure loss on the ULTRAHEAT 2WR5 is muchlower than in conventional vane-type meters and isway below 200 mbar.

The heat meter can be mounted both vertically and

horizontally – filters or straight inlet and outlet sections

are not required. The straight measuring tube keeps

the pressure loss low and prevents the accumulation

of air and dirt.

The electronic unit can be mounted on the tube itself

or separately on a wall.

ULTRAHEAT 2WR5Technical data

Valid for Germany only:

Following a decision by the PTB (German Federal Insti-tute of Physics and Metrology), the values for theminimum flow qi will change to twice the value statedin our documentation for qp 0.6 m3/h to 2.5 m3/h.

2WR508

0.6

1.2

0.006

1.2

190

DN20

PN25

55

2WR518

1.0

2.0

0.01

2.0

190

DN20

PN25

140

2WR524

1.5

3.0

0.015

3.0

190

DN20

PN25

130

ULTRAHEAT 2WR5

Nominal flow rate qp

Maximum flow rate qs

Minimum flow rate qi

Response limit approx.

Mounting length

Thread

Nominal pressure

Pressure drop ∆p at qp

Flanged connection

2WR505

0.6

1.2

0.006

0.006

110

G3/4 B

PN16

140

2WR506

0.6

1.2

0.006

1.2

110

G3/4 B

PN25

140

2WR515

1.0

2.0

0.01

2.0

110

G3/4 B

PN16

60

2WR516

1.0

2.0

0.01

2.0

110

G3/4 B

PN25

60

2WR521

1.5

3.0

0.015

3.0

110

G3/4 B

PN16

130

ULTRAHEAT 2WR5

Nominal flow rate qp

Maximum flow rate qs

Minimum flow rate qi

Response limit approx.

Mounting length

Thread

Nominal pressure

Pressure drop ∆p at qp

Threaded connection

Mounting – made easy

* in preparation **preliminary

2WR539

2.5

5.0

0.025

5.0

190

DN20

PN25

140

2WR546

3.5

7.0

0.035

7.0

260

DN25

PN25

65

2WR552

6.0

12

0.06

12

260

DN25

PN25

190

2WR561

10

20

0.1

20

300

DN40

PN25

120

2WR565

15

30

0.15

30

270

DN50

PN25

120

2WR570

25

50

0.25

50

300

DN65

PN25

70

2WR574

40

80

0.4

80

300

DN80

PN25

120

2WR582

60

120

0.6

120

360

DN100

PN16

140

2WR583

60

120

0.6

120

360

DN100

PN25

140

m3/h

m3/h

m3/h

l/h

mm

–

bar

mbar

2WR522

1.5

3.0

0.015

3.0

110

G3/4 B

PN25

130

2WR507

0.6

1.2

0.006

1.2

190

G1B

PN16

55

2WR509

0.6

1.2

0.006

1.2

190

G1B

PN25

55

2WR517

1.0

2.0

0.01

2.0

190

G1B

PN16

140

2WR519

1.0

2.0

0.01

2.0

190

G1B

PN25

140

2WR523

1.5

3.0

0.015

3.0

190

G1B

PN16

130

2WR525

1.5

3.0

0.015

3.0

190

G1B

PN25

130

2WR538

2.5

5.0

0.025

5.0

190

G1B

PN16

140

2WR540

2.5

5.0

0.025

5.0

190

G1B

PN25

140

2WR545

3.5

7.0

0.035

7.0

260

G11/4 B

PN16

65

2WR547

3.5

7.0

0.035

7.0

260

G11/4 B

PN25

65

2WR550

6.0

12

0.06

12

260

G11/4 B

PN16

190

2WR550

10

20

0.1

20

300

G2B

PN16

120

m3/h

m3/h

m3/h

l/h

mm

–

bar

mbar

2WR536*

2.5

5.0

0.025

5.0

130

G1B

PN16

190**

2WR537*

2.5

5.0

0.025

5.0

130

G1B

PN25

190**

Combi module M-bus and pulses

This module is used if the ULTRAHEAT 2WR5 is connect-ed to an M-bus system and simultaneously has to passon pulses to systems or district heating controllers forlimitation and control.

Combi module for pulses and 20-mA current loop

This module is a combination of a 20-mA module anda pulse module.

Modem moduleIntegrated analogue modem without separate supply,can be called and can call itself, password protection,maintenance-free.

Unique and Universal –The ULTRAHEAT 2WR5 Heat Meter

Integrated service unit

The 2WR5 features an integrated service unit – noadditional equipment is required. The extensive self-diagnostics facilitates rectification of any problemswith the unit or system.

Communication is standard

The standard meter is already equipped with an opticalinterface for communication and can be read or pro-grammed via a PC or hand-held terminal. As an optionit is possible to expand the unit with reaction-freemodules. The 2WR5 automatically detects whichmodule is plugged in. Adaptations in parameterizationare therefore not required.

20-mA module (current loop):

This module allows you to read the heat meter with ahand-held terminal or a PC via a cable up to 100 m inlength (front gate reading).

M-bus moduleUp to 250 heat meters can be connected in a networkvia a 2-wire cable using this module and read from acentral location.

Pulse moduleThis module contains either two pulse outputs that areelectrically isolated from the heat meter – one forenergy and the other for volume –, or status informa-tion, e.g. to control rolling mills, or one fast pulseoutput, e.g. to control closed-loop controllers. Withthe higher pulse rates, a distinction is made betweentypes of pulses (linear/scaled), pulse duration, and thequantity transferred.

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Subject to change without prior notice

Order No. UH 702-101Printed in Germany259900 / 76025 Ke / Schö 04032.

Landis+Gyr GmbHHumboldtstrasse 6490459 NürnbergGermanyInternet: www.landisgyr.com

Communication – A standard feature

Good for the environment,good for quality.Certified to:DIN EN ISO 14001 andDIN EN ISO 9001