Pressure | Temperature | Level

Industrial steam andhot-water boiler systems

About us
As a family-run business acting globally, with 10,200 highly
qualified employees, the WIKA group of companies is aworldwide leader in pressure and temperature measurement.
The company also sets the standard in the measurement oflevel, force and flow, and in calibration technology.
Founded in 1946, WIKA is today a strong and reliable
partner for all the requirements of industrial measurement
technology, thanks to a broad portfolio of high-precision
instruments and comprehensive services.

2With manufacturing locations around the globe, WIKA
ensures flexibility and the highest delivery performance.
Every year, over 50 million quality products, both standard
and customer-specific solutions, are delivered in batches of
1 to over 10,000 units.
With numerous wholly owned subsidiaries and partners,
WIKA competently and reliably supports its customers worldwide. Our experienced engineers and sales experts are yourcompetent and dependable contacts locally.

WIKA – Your partner for industrial
steam and hot-water boiler systems

Industrial boiler systems are used in the food and auto­motive industries as well as in hospitals and manyother areas.
In them, a whole series of modules work hand in hand:for example boilers, economisers, oil pressure control,
water treatment and return flow temperature safeguard.
The goal is the efficient provision of energy in the formof hot water or steam.

As a manufacturer of industrial steam and hot-water boiler
systems, you know how important it is to be able to rely on
every single component, one hundred percent.
As a supplier of safety-relevant measuring and switching
instruments, we understand this responsibility.
That is why WIKA focuses on the reliability and accuracyof the measuring instruments, as well as a high deliveryperformance. In the following pages, you will find the mostimportant measuring instruments that WIKA offers for thedifferent modules of a boiler system.

BurnerBoiler with economiser

Pressure booster system

Technical water treatment plant

Reverse osmosis system
3

Steam boiler with economiser
The majority of industrial boiler manufacturers offer additional modules that improve the efficiency, theperformance and the service life of an industrial boiler.

For steam boilers, one of these important modules is theeconomiser. Whether it is mounted and integrated directlyon the boiler or if it is assembled independently as a standalone module on-site later: The principle of the economiser
is that it uses the extracted heat from the flue gas to preheat
the feedwater. In this way the economiser improves theboiler efficiency in an ecological and environmental way asin addition, substantial savings can be operated through thismodule.
For this additional appliance an adequate indication andcontrol of the pressure and the temperature is needed.
For the economiser module, WIKA’s product range offers
all the instruments needed, from mechanical indication toelectronic sensing. The WIKA high temperature and highpressure resistance instruments made out of stainless steel
can be installed on each economiser even when aggressive
media are used (steam boiler are often supplied withchemical and thermally treated feedwater).

10698

1

Legend – Measuring locations:
123456789

Boiler pressure (transducer)
Boiler pressure (display)

Boiler temperature (limiter)

Boiler temperature (display)

Water level (display)Exhaust gas temperature (monitoring)Return water temperature (monitoring)Return water temperature (display)
Economiser pressure (display)

10 Exhaust gas temperature (display)

45234

7

Pressure
291

Level

Temperature
Bourdon tube
pressure gauge
113.53,100
211.11
212.20213.53, 23x.50.1x0
Pressure switch
PCS, PXS

Pressure sensor
A-10
S-20

676

4
810

4

3

Temperature switch
TCS, TXS

5Glass level gauge
LGG-E

Threaded thermo­
meter
TF37

Bimetal thermometer
TG54

Dial thermometer
A52

Expansion thermo­
meter
SB15, SW15

Accessories
2Syphon910.15

Valves
IV10, IV11, IV20, IV21

5

Industrial burner
The choice of a burner is essential while acquiring an industrial steam or a hot-water boiler. The energy source(fuel or gas), the burner power, the end user application and finally the choice of the burner manufacturer will be
the determining criteria of the selection of the burner model.

Reliability, energy efficiency, noise emissions and ease ofuse are further key buying factors that will decide an end user
to adopt one specific burner model.
The settings of the combustion system are decisive for economical operation and a long service life of the boiler.

Burner manufacturers need robust and reliable instrumentsfor pressure and temperature measurement. Whether pressure gauges for the oil and gas supply line, pressure sensors for monitoring the oil injection pressure or temperature
sensors involved in the pre-heating of air or oil to enable an
optimum combustion in the chamber – with its broad productrange, WIKA always offers the best solutions.

42657

31
7

Legend – Measuring locations:
123Air preheating, forward flow (transducer)
Oil pressure, return flow (display)

Oil pressure, forward flow (display)

45676

Gas pressure (display)

Oil injection pressure (transducer)
Oil return pressure (transducer)
Shut-off device

44Pressure
23

4

5
6

Temperature
Bourdon tube pressure gauge
213.5323x.50Capsule pressuregauge
612.20Pressure sensor
A-10

1

1

Resistance thermo­
meter
TR10
TR31
Threaded thermo­
meter
TF35
TF37
TFT35
Expansion thermo­
meter with switch
contact
SB15
Expansion thermo­
meter
IFC

Accessories
7Ball valve
BV7

Technical water treatment plant

The correct function of the boiler can be maintained by usinga degassing system. The degassing will prevent the plant(especially the pipelines, the economiser, the feedwater
vessel and the boiler itself) from any corrosion coming fromthe feedwater. It will limit the oxidisation and keep a low levelof oxygen and carbon dioxide in the water and steam circuit.
For this specific process, different temperature, pressure andlevel measurements and controls are made. A low and higher
pressure will be measuremed and controlled through apressure gauge and a pressure transmitter, the temperaturelevel will be monitored through temperature sensors andfinally the water tank level will be checked through glass levelmeasurement.

42
3

Legend – Measuring locations:
12
3
4
5

8

Feedwater temperature (display)

Feedwater temperature (transducer)

Pressure – Feedwater vessel (display)Pressure – Degasser dome (transducer)
Feedwater level (display)15

Pressure
34

Temperature
Bourdon tube
pressure gauge
111.1x213.5323x.50Pressure gauge with
output signal
PGT23

12

2Dial thermometer
A52

Level
5

Bypass level indicatorBNA

Temperature switch
TSD-30Threaded thermo­
meter
TF35
TF37
TFT35

Accessories
3

Syphon910.159Pressure booster system
An industrial steam boiler is a complex heating device on which are mounted different types of components thatgenerally work under extreme conditions. Depending on the needs and the application of the end user, additional
integrated or stand-alone modules, such as economisers, reverse osmosis systems, superheaters, etc., can beadded to the steam boiler system in order to substantially increase and optimise the boiler efficiency.

A module that can be added and integrated into the boiler
system is the pressure booster system. Its role is to feed thesteam boiler with a continuous, regular or variable amount offeedwater corresponding to the demand of steam that has tobe generated.
In this case, the control of the pressure is essential to maintain the required pressure level.

Due to their compact design, the pressure measuring instruments from WIKA enable an easy installation.
Their resistance and reliability are also an advantage in casevibrations and shocks occur during the process.

321
3

3

Legend – Measuring locations:
12
3

10

System pressure (display)

System pressure (transducer)
Shut-off device

3Pressure
122

2

Bourdon tube
pressure gauge
113.53213.5323x.50Pressure switch
PSM02

Pressure switch,maximum pressure
limiter
PSM-520

Pressure switch
PSD-4-ECO

Accessories
3

Ball valve
BV

11

Reverse osmosis system
On industrial steam boilers, the use of an additional water treatment module, a reverse osmosis system, isgenerally required. The aim of the reverse osmosis system is to remove minerals from the feedwater and eliminate
deposits inside or outside the boiler tubes, as far as possible, as they affect the efficiency and the performance ofthe steam production.

For the measurement of the water pressure during thefiltering into the diaphragm system, robust and precisepressure measuring instruments are needed as vibration may
occur during the process. WIKA’s product range for pressure
measurement is particularly well suited to this application,

since our model 213.53 and 233.50 glycerine-filled pressuregauges will smoothly absorb any pump vibration.
Our pressure switches and pressure transmitters withcompact design enable an easy installation on the reverse
osmosis module.

775838

3

6

Legend – Measuring locations:234

12

Dry run protection

Pump pressure (transducer)

Pressure – Fine filter (display)
Pump pressure (display)

2481

1

5
6
7
8

Pressure – Concentrate (display)Pressure – Feedwater (display)
Permeate venting

Permeate tappingPressure
34
5
6

1
2

1

1

Bourdon tube
pressure gauge
111.1x113.53213.5323x.50Pressure sensor
A-10
O-10

Pressure gauge withswitch contacts
PGS23

11

3

Pressure switch
PSM01, PSM02

Pressure switch
PSM-700, PCS

Pressure measuringsystem
PME01
PMM01

Pressure switch
PSD-4-ECO

Accessories
7878

Ball valve
BV

Valves
IV10, IV11, IV20, IV21

13

Accessories
Pressure gauge stopcock/Pressure gauge
cock
910.10Instrument mounting
brackets
910.16

Ball valve
BV

Shut-off valve forpressure gauges
910.11Pressure gauge in-line
filters910.22

Needle valve andmultiport valve
IV10, IV11

Snubber for pressure
measuring instruments
910.12

Cooling element forpressure measuring
instruments
910.32Block-and-bleed valve
IV20, IV21

Settable overpressure
protector
910.13

Adhesive label set for
red and green circular
arcs
910.33

Precision digitalpressure gauge
CPG1500“myWIKA device” appPlay StoreSyphons andconnecting pipes
910.15

Calibration service

Consultation, design, implementation � all from one source
Precise calibration instruments are the starting point forresolving your test requirements. However, they only form
one part of a high-performance calibration system. From
our extensive product range, we can design a complete andindividual solution for you which contains all the relevant
components: with adaptability for test items, pressure andvacuum supply, components for pressure control and fineadjustment, through to voltage supply and multimeters for thecalibration of electrical test items.
Our particular strength lies in the project planning, develop­
ment and the building of complete, individual, applicationspecific systems – from simple manual workstations throughto fully automatic test systems in production lines.

14

Complete test assembly for pressure, temperature and electricalmeasurands

Manufacturer-independent calibration - fast and precise for ...
Pressure■ -1 bar … +10,000 bar■ Calibration using working standards(precise electrical pressure measuringinstruments) or high-accuracy reference
standards (pressure balances)■ With an accuracy down to 0.003 % ofreading for the standard used

■ In accordance with the directives DIN
EN 837, DKD-R 6-1 or EURAMET cg-3

Temperature■ -196 °C … +1,600 °C■ Comparative calibration in calibration
baths with an accuracy down to 10 mK■ Comparative calibration in tube
furnaces with an accuracy down to
100 mK

Current, voltage and resistance■ DC current from 0 mA ... 100 mA■ DC voltage from 0 V ... 100 V■ DC resistance from 0 Ω … 10 kΩ

■ In accordance with the directives
VDI/VDE/DGQ/DKD 2622

■ Calibration at fixed points of ITS-90 withan accuracy down to 2 mK
- Triple point of mercury (-38.8344 °C)- Triple point of water (0.01 °C)- Melting point of gallium (29.7646 °C)- Solidification point of tin (231.928 °C)- Solidification point of zinc (419.527 °C)- Solidification point of aluminium`(660.323 °C)■ In accordance with the appropriate
DKD directivesForce■ 1 kN … 200 kN with a measurement
uncertainty of 0.1 % in tension andcompression force direction inaccordance with DIN EN ISO 376(calibration certificate per ISO 17025)■ 500 N ... 6 MN with a system accuracyof 0.5 % in tension and compression
force direction (3.1 inspection certificate
in accordance with DIN EN 10204)

Length■ 3.1 inspection certificate (factorycalibration)■ Replacement of the measuring device
if required■ Calibration of special-purpose gaugesin accordance with customer drawings■ Calibratable measuring devices- Callipers to 800 mm- Testing pins to 100 mm- Ring gauges and plug gauges to 150 mm- Tapered thread gauges to 150 mm- Gauge blocks to 170 mm(also possible as a set)
- others on request

Mobile and on-site(pressure and temperature)■ In order to have the least possible
impact on the production process, weoffer you a time-saving, on-site DAkkS
calibration, throughout Germany, in themobile calibration laboratory and onsite.
■ In our calibration van or on your workbench■ With a DAkkS accreditation for pressure- from -1 bar … +8,000 bar- with accuracies down to 0.01 % of fullscale for the standard used
■ With a DAkkS accreditation fortemperature from -55 °C … +1,100 °C

Image sources:
Page 4:

Viessmann Industriekessel Mittenwalde GmbH

Page 10:Grünbeck Wasseraufbereitung GmbH

Page 8:Page 12:Viessmann Industriekessel Mittenwalde GmbH

Detailed information
can be found online

Grünbeck Wasseraufbereitung GmbH15

From idea to completed
implementation
Benefit from our experienced development and design-engineering staff in orderto break new ground. Together with us, develop your concept for measurement
technology so that it fits perfectly into your future system solutions. Regardless ofwhether you are modifying an existing measuring system with us or developing
a new measuring instrument from the ground up, you can benefit from our many
years of practical experience and our knowledge of the key aspects of your market
segment.

Whether in residential or office accommodation, in private households or publicbuildings; whether with wood, oil, gas or solar power: Modern heating technology
enables you to obtain an efficient and sustained supply of heat and hot water.
This conserves resources and the environment. Furthermore, it is subject tostringent standards and regulations.
Pressure | Temperature | Level

Heating technology

WIKA offers manufacturers and distributors a comprehensive range of pressure,temperature and level measuring instruments tailored to suit a wide range ofrequirements. With this brochure, we would like to provide you with an overview ofour products and services for heating technology.

WIKA Alexander Wiegand SE & Co. KG
Alexander-Wiegand-Straße 30∙63911 Klingenberg∙Germany
Tel. +49 9372 132-0∙info@wika.de∙www.wika.de14324764 04/2023 EN

WIKA segment brochure“Heating technology”