Kirchner und Tochter SMB Series, SMB-OE Series, SMB 80, SMB 150, SMB 200 Assembly And Operating Instructions Manual

Sprinkler measuring orifice

SMB

Assembly and operating instructions

Sprinkler measuring orifice

SMB/SMB-OE

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A. Kirchner & Tochter GmbH Dieselstraße 17 · D-47228 Duisburg

Version 2.1

Sprinkler measuring orifice

SMB

Table of contents

1 General 1

1.1 Preface ......................................................................................................... 1

1.2 Exclusion of liability .......................................................................................... 1

2 Safety 1

2.1 General safety information .............................................................................. 1

2.2 Proper use .................................................................................................... 2

2.3 Explanation of pictographs and signs ............................................................... 2

2.4 Information on safety for owner and operators ................................................. 2

2.5 Regulations and guidelines .............................................................................. 2

2.6 VdS approval ................................................................................................. 2

3 Transport and storage 2

4 Description 3

4.1 Application .................................................................................................... 3

4.2 Design and function ....................................................................................... 3

4.3 Peculiarity SMB-OE ........................................................................................ 3

4.4 Installation variants ....................................................................................... 4

5 Installation 5

5.1 Preparation for installation ............................................................................. 5

5.2 Installation of the orifice ring .......................................................................... 5

5.3 Installation of the dial gauge ........................................................................... 6

6 Commissioning 7

6.1 Zero point adjustment .................................................................................... 7

6.2 Initial startup ................................................................................................ 7

7 Maintenance 8

8 Service 8

9 Disposal 8

10 Technical data 9

10.1 General technical data.................................................................................... 9

10.2 Models .......................................................................................................... 9

10.3 Measuring range ............................................................................................ 9

10.4 Inlet and outlet sections ................................................................................. 10

10.5 Dimensions .................................................................................................. 11

10.6 Installation kits ............................................................................................. 12

11 Spare parts 13

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Version 2.1

Sprinkler measuring orifice

1

SMB

1. General

1.1 Preface

These assembly and operating
instructions apply to sprinkler
measuring orifices, type SMB with a
display of m3/min and to the SMB-OE
with percentage display.
All information contained in these
operating instructions on assembly,
operation, repairs and maintenance
have to be observed and adhered to.
The operating instructions form an
integral part of the sprinkler
measuring orifice; they have to be kept
at a suitable location in the vicinity of
the place of application and must be
accessible for the operators.
In case of interaction of different plant
components, the operating
instructions of those also have to be
observed.

1.2 Exclusion of liability

Kirchner und Tochter will not accept
any liability for damage or disruptions
caused by operating errors, non­observance of these assembly and
operating instructions, inexpert
execution of assembly and repair work
or by the improper use of the sprinkler
measuring orifice.

2. Safety

2.1 General safety information

These assembly and operating
instructions contain important
information to be observed on the
assembly, the operation, on repairs
and maintenance of the sprinkler
measuring orifice. Each person
charged with the assembly, the
operation, repairs and maintenance
must have read and understood these
operation instructions.
Non-observance of these assembly and
operating instructions, or inexpertly
conducted assembly and repair work
may result in disruptions of the
sprinkler system. As a consequence,
man or animal may be at risk or
material assets may be damaged.
Hazards by electric energy or released
media energy must be prevented.

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Sprinkler measuring orifice

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SMB

2.2 Proper use

The VdS approval of the sprinkler
measuring orifice is valid for the flow
measurement of water. Installation in
pipework may be effected only between
two flanges (intermediate flange
assembly).
Select the sprinkler measuring orifice
model in accordance with the pipe
cross-section at the location of
application for the sprinkler measuring
orifice.
The limit values of the sprinkler
measuring orifice are to be observed
as prescribed in chapter „Technical
data“. Rebuilding or other modifications
of the measuring device may be
effected by Kirchner und Tochter only.

2.3 Explanation of pictographs and
signs

Pictograph on work safety

This pictograph can be found at all hints
on work safety in these assembly and
operating instructions pointing out
hazards for life and limb of persons.
Further, this pictograph highlights
safety hints in these operating
instructions that point to regulations,
guidelines or operating sequences that
must be observed without fail. Non­observance may result in damages to
or a destruction of the measuring
orifice and / or other parts of the
installation.

2.4 Safety information for the owner
and the operators

The personnel charged with the
assembly, the operation, repairs and
maintenance must be qualified to fulfill
the respective tasks and must have
been trained and instructed with
regards to the task in question.

2.5 Regulations and guidelines

Apart from the information contained
in these assembly and operating
instructions, the regulations, guidelines
and standards such as DIN EN, as well
as the DVGW and VdS guidelines in
case of branch-oriented applications
must be observed; the same is true for
the regulations on the prevention of
accidents valid in the destination
country.

2.6 VdS approval

The sprinkler measuring orifice has
been approved by the VdS. During the
installation, operation, repairs and
maintenance, the VdS guidelines have to
be adhered to.

3. Transport and storage

At the factory, the sprinkler measuring
orifice was suitably packed for transport
and storage. Transport and storage
should be effected while in the original
packing only.

The measuring device is to be
protected against shocks and
blows!

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Sprinkler measuring orifice

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SMB

4. Description

4.1 Field of application

The sprinkler measuring orifice SMB is
a measuring device employed to measure
the flow rate in pipework of stationary
sprinkler systems.

4.2 Design and function

Due to physical reasons, different
pressure potentials are found on both
sides of the orifice (5). This differenti­al pressure acts quadratic proportional
to the volume flow inside the pipework
(4).
The scaling (1) of the dial gauge (3) is
realized in volume flow units (m³/min).
The dial gauge displays the present
volume flow inside the pipe via the
position of the hand (2).

4.3 Peculiarity SMB-OE

All information contained in these
assembly and operating instructions
are also valid for the measuring device
SMB-OE.
A peculiarity of the sprinkler measuring
orifice SMB-OE is the fact that the
scaling of the scale reading plate has
been subdivided in percent.
A label on the dial gauge serves to read
the effective flow values in m³/min for
the individual nominal cross-section of
the pipe.
This permits the combination of the dial
gauge with all nominal cross-sections
of the SMB-OE.

1 scaling
2 hand
3 dial gauge
4 pipe work
5 orifice
6 flange

Ill. 1

1

6 5 4

2

3

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Version 2.1

Sprinkler measuring orifice

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SMB

Ill. 2

4.4 Installation variants

Thanks to the special articulated design,
the dial gauge of the sprinkler measuring
orifice pivots by 180 degrees in both
directions. Therefore, an assembly in
various installation positions is possible
(refer to illustration 2).

Installation direction of flow
from left to right

Installation direction of flow
from top to bottom

Installation direction of flow
from right to left

Installation direction of flow
from bottom to top

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5. Installation

Installation may be effected by
trained personnel only!

5.1 Preparation for installation

•Verify the local conditions and the
direction of flow inside the pipework
at the place of installation of the
sprinkler measuring orifice.

•Make sure that the sprinkler
measuring orifice is suitable for
installation at the planned location
with regards to nominal cross-section,
min. inlet and outlet distance,
maximum working pressure and me­dium (also refer to chapter 10).

• Shut off and secure the pipework in
accordance with regulations and
empty the circuit.

•Lay out the installation kit for the
delivered measuring orifice (refer to
chapter 10.6).

5.2 Installation of the orifice ring

For an intermediate flange
installation of the sprinkler

measuring orifice, two flanges
PN 16 have to be installed in accordance
with DIN EN 1092-1 and the VdS
guidelines. The flange distance required
for installation is 40 mm with an additi­onal 2 mm each for both flange seals.

Sprinkler measuring orifice

5

SMB

Ill. 3

Pre-assemble the flanged connection in
such a way as to permit the insertion
of the measuring orifice with its seals
from the front (vertical piping) or from
above (horizontal piping), respectively.

Together with the seals attached on
both sides, place the measuring orifice
between both prepared flanges and
slide same all the way against the pre­assembled screws.
This serves to center orifice and seal.
The seals have to be in true alignment
with the entire circumference of the
measuring orifice.

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Sprinkler measuring orifice

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SMB

The flow direction has to coincide with
the hand on the measuring orifice.

Insert the remaining screws and
uniformly tighten all screwed
connections crosswise.

Note

The best measuring accuracy is
obtained with smooth inside pipe joints
and pipe configurations in accordance
with the VdS guidelines.

5.3 Installation of the dial gauge

Remove the shipping protection plugs (1,
ill. 4) from the threads of the dial gauge
and the screwed connections of the
measuring orifice. The sealing rings (9)
required during assembly have been
attached to the dial gauge with cable
binders.
Use screws (4 and 7) to fix the dial
gauge with its inserted sealing rings (9)
to the ball valves of the measuring
orifice. In the process, connect the plus
line of the dial gauge with the plus line of
the measuring orifice and minus line of
the dial gauge with the minus line of the
measuring orifice. Observe the respective
markings at the dial gauge and on the
lable of measuring orifice.
Position the dial gauge in such a way, as
to permit an unimpeded reading of the
display.
Tighten the fixing screws (4 to 7) with
a torque of 15 Nm.

In order to prevent leaks, the joining
pieces (1 and 2) should not be tightened
with a torque.
When tightening the screwed
connections (4 and 7) immobilize the
joining pieces (1 and 2) with a wrench.

Ill. 4

1

5

6

7

8
9
1

4

3

2

Next follow the steps in chapter 6
„Commissioning“.

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Ill. 5

Version 2.1

6. Commissioning

6.1 Zero-point adjustment

In case the hand of the dial gauge is not
within the range of the rest position
marked RP with the flow cut off, the
sprinkler measuring orifice has to be
readjusted as follows:

• Detach the screws (3) from the dial

gauge

• Remove the translucent cover lid

• With the zero-point adjustment screw

(4) adjust the hand to the center of the
rest postion (ill. 6)

• Put cover lid back on

• Insert screws and tighten same

6.2 Initial startup

The correct installation is a

prerequisite for commissioning.

The following steps have to be followed
for the initial startup:

• Close ball valves (1 and 2)

• Put conduit under pressure

• Simultaneously open the ball valves (1

and 2)

• Check tightness of all components of

the sprinkler measuring orifice.

Sprinkler measuring orifice

7

SMB

zero point Ok zero point not Ok

Adjust zero point concentric to

the rest position (RP)

Ill. 6

3

3

4

2

1

Ill. 7

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Sprinkler measuring orifice

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SMB

7. Maintenance

The sprinkler measuring orifice is
maintenance-free. In order to warrant
a reliable operation and a long service
life of the device, we recommend
regular checks of the device, such as:

• check of the display

• remove deposits inside the nozzles of

the banjo bolts

• check of the joints between orifice ring

and dial gauge

The exact checking cycles are
determined by the VdS regulations and
are to be adjusted depending on the
operating and surrounding conditions.

8. Service

All defective or faulty devices are to be
returned directly to our repair shop.
In order to process complaints of our
customers as quickly as possible, kindly
contact our Sales Department tel. no.
[phone] before returning
any parts.

9. Disposal

For a better environment.
Please help us protect our environment
by disposing of the parts used in
accordance with the relevant legislation
or by recycling same.

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Sprinkler measuring orifice

SMB

10. Technical data

10.1 General technical data

VdS approval G 4990049
Measuring principle Differential pressure metering at orifice
Materials:
Orifice hard-coated aluminum
Screwed connections nickel-plated brass, 1.4308
Ball valves nickel-plated brass
Dial gauge Aluminum
Scale in m³/min or % at SMB-OE
Measuring accuracy 2.5% FS
max. working pressure 16 bar
Installation intermediate flange installation in accordance with the VdS

guidelines

10.2 Models

The SMB is available in five different nominal cross-sections. The approved measuring
range of the SMB is at least 1:5. The SMB attains an accuracy of 2.5% at the approved
full-scale range and an accuracy of 5% at the approved measuring range start value.

10.3 Measuring range

Measuring range SMB

Model For pipes with Approved Max. deviation from the

inner diameter of measuring range full-scale range
[mm] / [DN] [m³/min] [m³/min] [%]

SMB 80 83.1 / 80 0,6 - 2.1 ±0.0525 ± 2,5
SMB 100 107.9 / 100 1 - 3.4 ±0.085 ± 2,5

SMB 150 160.3 / 150 2 - 7.25 ±0.18125 ± 2,5
SMB 200 210.1 / 200 4 - 12.35 ±0.30875 ± 2,5
SMB 250 264.0 / 250 4 - 18.12 ±0.453 ±2,5

9

Measuring range SMB-OE

DN80 DN100 DN150 DN200 DN250
Indication Indication Indication Indication Indication
% m³/min % m³/min % m³/min % m³/min % m³/min

100,00 2,10 100,00 3,40 100,00 7,25 100,00 12,35 100,00 18,12
90,00 1,89 90,00 3,06 90,00 6,53 90,00 11,12 90,00 16,31
80,00 1,68 80,00 2,72 80,00 5,80 80,00 9,88 80,00 14,50
70,00 1,47 70,00 2,38 70,00 5,08 70,00 8,65 70,00 12,68
60,00 1,26 60,00 2,04 60,00 4,35 60,00 7,41 60,00 10,87
50,00 1,05 50,00 1,70 50,00 3,63 50,00 6,18 50,00 9,06
40,00 0,84 40,00 1,36 40,00 2,90 40,00 4,94 40,00 7,25
30,00 0,63 30,00 1,02 30,00 2,18 30,00 3,71 30,00 5,44
28,57 0,60 29,41 1,00 27,59 2,00 32,39 4,00 22,08 4,00

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Sprinkler measuring orifice

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SMB

10.4 Inlet and outlet paths

A B

Ill. 8

The optimum accuracy is obtained, if the pipe configuration conforms to the VdS guidelines.
The following inlet and outlet sections that must not contain any valves, knees, elbows,
changes in cross-section or similar, apply to the various SMB models.
When using pumps creating fluctuations in the volume flow (possible with centrifugal
pumps driven by a diesel engine), we recommend to extend the inlet section from 10 d to
18 d.

Model Min. inlet path Min. outlet path

SMB 80 800 400
SMB 100 1000 500
SMB 150 1500 750
SMB 200 2000 1000
SMB 250 2500 1250

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AB
[mm] [mm]

A. Kirchner & Tochter GmbH Dieselstraße 17 · D-47228 Duisburg

Version 2.1

10.5 Dimensions

Sprinkler measuring orifice

11

SMB

104

2

2,5

1,5

SMB 100

3

3

m

/min

1

0,6

3,4

RP

0

P+

P-

SMB 100

3

q : 3,3m /min

max

3

q : 0,6m /min

min

P : 16bar

max

VdS Anerkennung
Nr.: G XXXXXXX
Ser. Nr.: 100000000
Kirchner und Tochter
D-47228 Duisburg
URL www.kt-web.de

40

Ill. 9

Model A B E

SMB 80 144 84.1 311
SMB 100 164 108.9 321
SMB 150 220 161.8 349
SMB 200 275 211.8 377
SMB 250 331 264.5 406

[mm] [mm] [mm]

96

E

B
A

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Sprinkler measuring orifice

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SMB

10.6 Installation kits

SMB Quantity Designator
installation kit

DN 80 8 hexagon bolt DIN 933 - M16 x 110 - 8.8 galvanized

DN 100 8 hexagon bolt DIN 933 - M16 x 110 - 8.8 galvanized

DN 150 8 hexagon bolt DIN 933 - M20 x 110 - 8.8 galvanized

DN 200 12 hexagon bolt DIN 933 - M20 x 110 - 8.8 galvanized

DN 250 12 hexagon bolt DIN 933 - M24 x 110 - 8.8 galvanized

1)

Use rubber seals or water-resistant seals.

8 nut DIN 934 - M16 - 8
8 washer DIN 125 - 17 - A2
2 seals

8 nut DIN 934 - M 16 - 8
8 washer DIN 125 - 17 - A2
2 seals

8 nut DIN 934 - M20 - 8
8 washer DIN 125 - 21 - A2
2 seals

12 nut DIN 934 - M20 - 8
12 washer DIN 125 - 21 - A2

2 seals

12 nut DIN 934 - M24 - 8
12 washer DIN 125 - 25 - A2

2 seals

1)

Ø 133 x Ø 86 x 2

1)

Ø 162 x Ø 109 x 2

1)

Ø 211 x Ø 162 x 2

1)

Ø 265 x Ø 223 x 2

1)

Ø 328 x Ø 274 x 2

Ill. 10

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11. Spare parts

Sprinkler measuring orifice

13

SMB

1

10

7

5

11

6

4

9

6

8

3

2

Bill of parts

Pos. Qty. Designator Material

1 1 Dial gauge AI
2 1 Measuring orifice hard-coated AI
3 2 Joining piece CuZn nickel-plated
4 2 Straight joint 1.4308
5 2 L-type joint 1.4308
6 4 Screw CuZn nickel-plated
7 2 Double-threaded nipple CuZn nickel-plated
8 2 Ball valve CuZn nickel-plated
9 12 Sealing ring CuZn nickel-plated/NBR

10 1 Clear-view cover Perspex
11 2 Screw with damping insert CuZn nickel-plated
12 1 Assembly and operating instructions -

Spare parts’ list

A) 1 orifice with joining pieces (Pos. 2, 3, 8, 9)
B) 1 set pre-assembled fittings (Pos. 4, 5, 6, 9, 11)
C) 1 dial gauge (Pos. 1, 7, 10)
D) 1 set of sealing rings (Pos 9)

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Sprinkler measuring orifice

SMB

The equipment from Kirchner und Toch­ter has been tested in compliance with
the applicable CE-regulations of the
European Community.
The respective declaration of
conformity is available on request.
The Kirchner und Tochter QM-System
will be certified in accordance with
DIN-EN-ISO 9001:2000. The quality is
systematically adapted to the
increasing demands.

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