Fisher MS11 User manual

IEC 61508
SIL2
Betriebsanleitung
MS11
Contact manometer
for difficult measuring conditions
09005142 • BA_EN_MS11 • Rev. ST4-A • 03/20 *09005142*

| Masthead FISCHER Mess- und Regeltechnik GmbH
2 BA_EN_MS11
Masthead
Manufacturer: FISCHER Mess- und Regeltechnik GmbH
Bielefelderstr. 37a
D-32107 Bad Salzuflen
Telephone: [phone]
Telefax: [phone]
eMail: [email protected]
web: www.fischermesstechnik.de
Technical editorial team: Documentation representative: T. Malischewski
Technical editor: R. Kleemann
All rights, also those to the translation, reserved. No part of this document may
be reproduced or processed, duplicated or distributed using electronic systems
or any other form (print, photocopy, microfilm or another process) without the
written consent of the company FISCHER Mess- und Regeltechnik GmbH, Bad
Salzuflen.
Reproduction for internal use is expressly allowed.
Brand names and procedures are used for information purposes only and do
not take the respective patent situation into account. Great care was taken
when compiling the texts and illustrations; Nevertheless, errors cannot be ruled
out. The company FISCHER Mess- und Regeltechnik GmbH will not accept any
legal responsibility or liability for this.
Subject to technical amendments.
© FISCHER Mess- und Regeltechnik 2020
Version history
Rev. ST4-A 03/20 Version 1 (first edition)

FISCHER Mess- und Regeltechnik GmbH Table of contents
BA_EN_MS11 iii
Table of contents
1 Safety instructions .......................................................................................................... 4
1.1 General................................................................................................................................... 4
1.2 Personnel Qualification........................................................................................................... 4
1.3 Risks due to Non-Observance of Safety Instructions............................................................. 4
1.4 Safety Instructions for the Operating Company and the Operator ......................................... 4
1.5 Unauthorised Modification...................................................................................................... 4
1.6 Inadmissible Modes of Operation........................................................................................... 4
1.7 Safe working practices for maintenance and installation work............................................... 5
1.8 Pictogram explanation............................................................................................................ 5
2 Product and functional description ............................................................................... 6
2.1 Delivery scope........................................................................................................................ 6
2.2 Equipment versions................................................................................................................ 6
2.2.5 Type plate .................................................................................................................................. 7
2.3 Intended use........................................................................................................................... 8
2.4 Function diagram.................................................................................................................... 8
2.5 Design and mode of operation ............................................................................................... 8
3 Assembly.......................................................................................................................... 9
3.1 General................................................................................................................................... 9
3.2 Process connection ................................................................................................................ 9
3.3 Electrical connections............................................................................................................. 11
4 Start-up ............................................................................................................................. 13
4.1 General................................................................................................................................... 13
4.2 Control elements .................................................................................................................... 13
4.3 Opening the enclosure ........................................................................................................... 13
4.4 Zero point correction............................................................................................................... 14
4.5 Switch point setting................................................................................................................. 14
4.6 Function test........................................................................................................................... 15
5 Servicing........................................................................................................................... 16
5.1 Maintenance ........................................................................................................................... 16
5.2 Transport ................................................................................................................................ 16
5.3 Service.................................................................................................................................... 16
5.4 Disposal.................................................................................................................................. 16
6 Technical data.................................................................................................................. 17
6.1 General Information................................................................................................................ 17
6.2 Input variables ........................................................................................................................ 17
6.3 Output parameters.................................................................................................................. 18
6.4 Operating conditions............................................................................................................... 18
6.5 Construction design................................................................................................................ 18
7 Order codes...................................................................................................................... 22
8 Attachments ..................................................................................................................... 24

1 | Safety instructions FISCHER Mess- und Regeltechnik GmbH
4 BA_EN_MS11
1 Safety instructions
1.1 General
This operating manual contains basic instructions for the installation, operation
and maintenance of the device that must be followed without fail. It must be
read by the installer, the operator and the responsible specialist personnel be-
fore installing and commissioning the device.
This operating manual is an integral part of the product and therefore needs to
be kept close to the instrument in a place that is accessible at all times to the re-
sponsible personnel.
The following sections, in particular instructions about the assembly, commis-
sioning and maintenance, contain important information, non-observance of
which could pose a threat to humans, animals, the environment and property.
The instrument described in these operating instructions is designed and manu-
factured in line with the state of the art and good engineering practice.
1.2 Personnel Qualification
The instrument may only be installed and commissioned by specialized person-
nel familiar with the installation, commissioning and operation of this product.
Specialized personnel are persons who can assess the work they have been
assigned and recognize potential dangers by virtue of their specialized training,
their skills and experience and their knowledge of the pertinent standards.
1.3 Risks due to Non-Observance of Safety Instructions
Non-observance of these safety instructions, the intended use of the device or
the limit values given in the technical specifications can be hazardous or cause
harm to persons, the environment or the plant itself.
The supplier of the equipment will not be liable for damage claims if this should
happen.
1.4 Safety Instructions for the Operating Company and the
Operator
The safety instructions governing correct operation of theinstrument must be
observed. The operating company must make them available to the installation,
maintenance, inspection and operating personnel.
Dangers arising from electrical components, energy discharged by the medium,
escaping medium and incorrect installation of the device must be eliminated.
See the information in the applicable national and international regulations.
Please observe the information about certification and approvals in the Tech-
nical Data section.
1.5 Unauthorised Modification
Modifications of or other technical alterations to the instrument by the customer
are not permitted. This also applies to replacement parts. Only the manufacturer
is authorised to make any modifications or changes.
1.6 Inadmissible Modes of Operation
The operational safety of this instrument can only be guaranteed if it is used as
intended. The instrument model must be suitable for the medium used in the
system. The limit values given in the technical data may not be exceeded.
The manufacturer is not liable for damage resulting from improper or incorrect
use.

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BA_EN_MS11 5
1.7 Safe working practices for maintenance and installation work
The safety instructions given in this operating manual, any nationally applicable
regulations on accident prevention and any of the operating company's internal
work, operating and safety guidelines must be observed.
The operating company is responsible for ensuring that all required mainten-
ance, inspection and installation work is carried out by qualified specialized per-
sonnel.
1.8 Pictogram explanation
DANGER
Type and source of danger
This indicates a direct dangerous situation that could lead to death or serious
injury (highest danger level).
1. Avoid danger by observing the valid safety regulations.
WARNING
Type and source of danger
This indicates a potentially dangerous situation that could lead to death or ser-
ious injury (medium danger level).
1. Avoid danger by observing the valid safety regulations.
CAUTION
Type and source of danger
This indicates a potentially dangerous situation that could lead to slight or seri-
ous injury, damage or environmental pollution (low danger level).
1. Avoid danger by observing the valid safety regulations.
NOTICE
Note / advice
This indicates useful information of advice for efficient and smooth operation.

2 | Product and functional description FISCHER Mess- und Regeltechnik GmbH
6 BA_EN_MS11
2 Product and functional description
2.1 Delivery scope
• Contact manometer MS11
• Operating Manual
2.2 Equipment versions
2.2.1 Pressure chamber
Aluminium Stainless steel
Pressure chamber
Fig.1: Material options for the pressure chamber
2.2.2 Assembly
Aluminium Stainless steel
Fig.2: Wall mounting
Aluminium Stainless steel
Fig.3: Mounting the control panel

FISCHER Mess- und Regeltechnik GmbH Product and functional description | 2
BA_EN_MS11 7
2.2.3 Protection class
Aluminium pressure chamber Stainless steel pressure chamber
Hood Makrolon
Fig.4: Protection class IP55
Aluminium pressure chamber Stainless steel pressure chamber
Bayonet ring enclosure
NG100
Fig.5: Protection class IP65
2.2.4 Electrical connection
Cable connection Cable socket/plug
Fig.6: Options for the electrical connection
2.2.5 Type plate
Devices pressure and voltage-free
Switching capacity: 5A/250V AC
Article no.
Measuring range
P max.
Prod. no.
0 - 1 bar
25 bar
MS11 02NA00B1000
1806610.01.002
Made in Germany
MESS- UND
REGELTECHNIK
GmbH
D-32107 Bad Salzuflen
Serial number
Order code
Fig.7: Type plate

2 | Product and functional description FISCHER Mess- und Regeltechnik GmbH
8 BA_EN_MS11
2.3 Intended use
The MS11 contact manometer is a combined measuring and switch device for
pressure measurements under difficult conditions, such as pressure impacts, vi-
brations, frequent switch processes or high requirements on the switch perform-
ance.
The device is suitable for gaseous media and fluid media. Please contact the
manufacturer before using this unit with dirty or aggressive media because the
unit needs to be adapted in terms of the parts that come into contact with the
media.
The device can be used as a functional safety components (SIL) as agreed with
the manufacturer (see order code).
The device is to be exclusively used for the applications agreed between the
manufacturer and the user.
2.4 Function diagram
1
2
3
4
5
6
7
1
+
Fig.8: Function diagram
1 Pressure chamber 2 Motion train
3 Tappet 4 Micro-switch
5 Switch point setting 6 Measuring diaphragm
7 Measuring springs
2.5 Design and mode of operation
The basis for this measurement and switch unit is a sturdy non-sensitive dia-
phragm measuring unit that is suitable for measuring over and under-pressure.
In the rest position, the spring forces on both sides of the membrane are bal-
anced out. Due to the pressure or underpressure to be measured, a single-
sided force is created on the membrane which shifts the membrane system
against the measurement range springs up to compensation of the spring
forces. In case of overload, the membrane supports against the metallic support
surfaces.
A centrally positioned tappet transfers the movement of the membrane system
on the motion train and operating elements of the micro-switches.

FISCHER Mess- und Regeltechnik GmbH Assembly | 3
BA_EN_MS11 9
3 Assembly
3.1 General
The device is designed for a direct process connection acc. to DIN EN 837. Op-
tionally, the device can also be supplied for wall mounting or with an installed
switch panel set.
NOTICE!At the factory, the device is calibrated for vertical installation and
only this installation position is allowed.
To ensure safety during installation and maintenance, we recommend installing
a suitable shut-off valve on the system (see accessories). A shut-off valve offers
the following advantages:
• The device can be depressurized or decommissioned.
• The device can be disconnected from the power supply within the applic-
able system for repairs or inspections.
• A function test of the device can be performed on-site.
3.2 Process connection
• By authorized and qualified specialized personnel only.
• The pipes need to be depressurized when the instrument is being connec-
ted.
• Appropriate steps must be taken to protect the device from pressure surges.
• Check that the device is suitable for the medium being measured.
• Maximum pressures must be observed (cf. Tech. data)
The pressure line must be kept as short as possible and installed without any
tight bends to avoid delays.
The pressurized line must be installed on a gradient so that no air pockets can
be created when measuring fluids and that no water pockets are created when
measuring gas. If the required inclination is not reached, water or air filters must
be installed at suitable places.
In the case of fluid media, the pressurized line needs to be vented because dif-
ferent fluid pillars in the lines can distort measurements.
If water is used as a measuring medium, the unit must be protected against
frost.
Pulsating pressure on the system side can lead to wear and functional prob-
lems. To safeguard this, we recommend installing absorption elements in the
pressure line.

3 | Assembly FISCHER Mess- und Regeltechnik GmbH
10 BA_EN_MS11
Fluid media
In the operational status, the reactor pins need to be set so that the measure-
ment display follows the pressure changes with a delay.
Settable reactor pins below the closing cap
G¼
Fig.9: Damping reactor
Gaseous media
Ø8
Capillary throttle MZ401
Fig.10: Capillary throttle

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BA_EN_MS11 11
3.3 Electrical connections
• By authorized and qualified specialized personnel only.
• When connecting the unit, the national and international electro-technical
regulations must be observed.
• Disconnect the system from the mains, before electrically connecting the
device.
• Install the consumer-adapted fuses.
• Do not connect the connector if strained.
The MS11 can be equipped with one or two micro-switches. Each micro-switch
has a changeover contact that is wired as follows.
231 645
Switch 1 Switch 2
Fig.11: Electrical connection
Cable socket
can be mounted offset by 180°
cable screw connection
Fig.12: Cable socket
Terminals 1 to 6 Brass Screw terminal up to 1.5 mm2
Ground terminal Nickel-plated brass Screw terminal up to 2.5 mm2
Cable screw connection Polyamide 6 M20x1.5
Sealant EPDM
Terminal range 7 to 13 mm

3 | Assembly FISCHER Mess- und Regeltechnik GmbH
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Plug connection
can be mounted offset by 180°
Cable screw connection
3
6
1 2
45
Fig.13: Cable plug
Terminals 1 to 6 Brass Screw terminal up to 1.5 mm2
Ground terminal
Cable screw connection Polyamide 6 M20x1.5
Sealant EPDM
Terminal range 7 to 13 mm
Numbered cables
For models with numbered cables, the cable numbers correspond with the
presented terminal numbers.

FISCHER Mess- und Regeltechnik GmbH Start-up | 4
BA_EN_MS11 13
4 Start-up
4.1 General
All electrical supply, operating and measuring lines, and the pressure connec-
tions must have been correctly installed before commissioning. All supply lines
are arranged so that there are no mechanical forces acting on the device.
Check that the pressure connections do not leak before commissioning.
4.2 Control elements
Zero-point connection
Switch point setting
Switch 1 Switch 2
Fig.14: Control elements
• Depending on the enclosure model, the switch point setting is accessible in
different ways.
• The enclosure must be opened to set the zero-point.
4.3 Opening the enclosure
4.3.1 Enclosure with protection class IP55
1
2
1
2
3
4
PH2
1. Remove the attachment screws (1) with a screwdriver. Ensure that the seal-
ing rings (2) do not get lost. The protection class is no longer guaranteed
without these sealing rings.
2. Remove the Makrolon in the hood (3) and the seal (4).
3. It is assembled in reverse order. The seal (4) must lie precisely in the
groove of the hood before the hood is screwed on.

4 | Start-up FISCHER Mess- und Regeltechnik GmbH
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4.3.2 Enclosure with protection class IP65
Ø100
1
2
34
1. Release the bayonet ring (1) by turning to the left. if the bayonet ring cannot
be opened by hand, use a pipe wrench (4).
2. Remove the glass pane (2) and the seal (3).
3. It is assembled in reverse order.
The bayonet ring in switch panel installation devices cannot be removed if in-
stalled. In this case, the device first needs to be removed before the enclosure
can be opened.
4.4 Zero point correction
1. Depressurise the measuring chamber.
2. Open the enclosure
3. Set the measurement value pointer to the zero-point scale (see fig. above
[}13]) using the zero point correction screw.
4. Close the casing.
4.5 Switch point setting
1
2
Switch point setting
1.2 x 8
1. Remove the plugs (1) and the seals (2) in the hood and/or open the bayonet
ring enclosure.
2. The required switch points can be set on the reference scale guide with a
screwdriver. The achievable accuracy is 5 %.
3. Replace the plug and/or the bayonet ring after completing the settings.

FISCHER Mess- und Regeltechnik GmbH Start-up | 4
BA_EN_MS11 15
4.6 Function test
Remove both plugs in the hood for testing or open the bayonet ring enclosure. If
the unit has two micro-switches, the stated test steps must be carried out for
both switches. After the test, the switch points need to be reset (see above).
Check when the system is depressurized.
• No measurement is shown and the measurement display point to zero.
• Turn the switch point setting button toward the zero-point until the micro-
switch is activated.
Test when the system is operational
• A measurement is shown.
• Turn the switch point setting button toward the measurement until the micro-
switch is activated.

5 | Servicing FISCHER Mess- und Regeltechnik GmbH
16 BA_EN_MS11
5 Servicing
5.1 Maintenance
The instrument is maintenance-free. We recommend the following regular in-
spection to guarantee reliable operation and a long service life:
• Check the function in combination with downstream components.
• Check the leak-tightness of the pressure connection lines.
• Check the electrical connections.
The exact test cycles need to be adapted to the operating and environmental
conditions. In combination with other devices, the operating instructions for the
other devices also need to be observed.
5.2 Transport
The measuring device must be protected against impacts. It should be transpor-
ted in the original packaging or a suitable transport container.
5.3 Service
All defective or faulty devices should be sent directly to our repair department.
Please coordinate all shipments with our sales department.
WARNING
Process media residues
Process media residues in and ondismantled devices can be a hazard to
people, animals and the environment. Take adequate preventive measures. If
required, the devices must be cleaned thoroughly.
Return the device in the original packaging or a suitable transport container.
5.4 Disposal
Please help to protect the environment by always disposing of the work pieces
and packaging materials in compliance with the valid national waste and recyc-
ling guidelines or reuse them.

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BA_EN_MS11 17
6 Technical data
6.1 General Information
Reference conditions (acc. to IEC 61298-1)
Temperature +15 … +25 °C
Relative humidity 45 … 75 %
Air pressure 86 … 106 kPa 860 … 1060 mbar
Installation position vertical
6.2 Input variables
Measuring ranges Measuring accuracy Overpres-
sure
Under-pres-
sure
0 … 250 mbar ± 6.25 mbar 25 bar - 1 bar
0 … 400 mbar ± 10 mbar
0 … 0.6 bar ± 0.015 bar
0 … 1 bar ± 0.025 bar
0 … 1.6 bar ± 0.04 bar
0 … 2.5 bar ± 0.625 bar
0 … 4 bar ± 0.1 bar
0 … 6 bar ± 0.15 bar
0 … 10 bar ± 0.25 bar
0 … 16 bar ± 0.4 bar
0 … 25 bar ± 0.625 bar
-0.6 … 0 bar ± 0.015 bar
-1 … 0 bar ± 0.025 bar
-1 … +0.6 bar ± 0.04 bar
-1 … +1.5 bar ± 0.0625 bar
-1 … +3 bar ± 0.1 bar
-1 … +5 bar ± 0.15 bar
-1 … +9 bar ± 0.25 bar
-1 … +15 bar ± 0.4 bar
-1 … +24 bar ± 0.625 bar
Rated pressure of the measuring
system
25 bar
Test pressure 1.5 times the rated pressure
Zero-point setting Arranged in the front panel of the scale
Measuring accuracy ± 2.5% of the upper range value

6 | Technical data FISCHER Mess- und Regeltechnik GmbH
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6.3 Output parameters
Switch contacts 1 to 2 micro-switches
Switching function (per contact) Changeover contact
Switch point setting Can be set to reference scales from outside
Smallest settable value 5% of the upper range value
Switch hysteresis 2.5% of the upper range value
Per contact AC DC
Switching voltage 250 V 30 V
Switching current 5 A 0.4 A
Switching output 250 VA 10 W
6.4 Operating conditions
Increase ambient temperature -10 … +70 °C
Media temperature -10 … +70 °C
Storage temperature -15 … +75 °C
Enclosure protection class IP55 or IP65 acc. to EN 60529 depending on
model
NSR EN 61010-1:2010
RoHS EN 50581:2012
SIL2 EN 61508:2010 Parts 1-7
6.5 Construction design
Process connection Connection shank G½ B DIN EN 837
Electrical connection Permanently wired numbered cables
7-pin plug connection
Cable socket
Installation position vertical
Dimensions See dimensional drawings
Weight Pressure chamber in aluminium 1.2 kg
Pressure chamber in stainless
steel
3.5 kg
6.5.1 Werkstoffe
Parts in contact with the
medium
Pressure chamber Aluminium GkAlSi10(mg); painted black
Aluminium GkALSi10(mg); HART-COAT© surface
protection
Chromium nickel steel 1.4305
Measuring diaphragm NBR
VITON®
Inconel 718
Seals NBR
VITON®
Other inner parts Rustproof steel 1.4310, 1.4305
Process connection Pressure chamber in aluminium CuZn40
Pressure chamber in stainless
steel
1.4404

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BA_EN_MS11 19
Parts with no contact with the
medium
Cover hood IP55 Makrolon
Bayonet ring housing IP65 Stainless steel 1.4301
Dial face and needle Aluminium
Setting buttons AlCuMgPb 3.1645
6.5.2 Dimensional drawings
All dimensions in mm unless otherwise stated
The following are the dimensional diagrams for the different models of the pres-
sure chambers in aluminium. The dimensional diagrams for the pressure cham-
bers in stainless steel are similar. For this reason, there is no illustration.
6.5.2.1 Standard version (aluminium)
78
30°
87.5
20
3
Ø6
17.5
G½
41
37
12 103
5
Ø104
M16 x 1.5
cable screw connection
Option
process connection
SW22
Fig.15: Model IP55
Ø104
141
71
143
40
108
Ø104 Ø101
22
23
Fig.16: Model IP65

6 | Technical data FISCHER Mess- und Regeltechnik GmbH
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6.5.2.2 Wall structure (aluminium)
78
30°
87.5
20
3
Ø6
17.5
G½
46
16.5 108
5
Ø104
SW22
30°
Ø5
Ø127 Ø116
Fig.17: Model IP55
141
Ø120
Ø5
Ø116
Ø101
40
71
16.5
108
101
Ø127 Ø116
SW22
Fig.18: Model IP65