Dr.Fodisch PFM 92 C User manual

Particle Flow Meter PFM 92 C
Operation manual
Dr. Födisch Umweltmesstechnik AG Telephone: [phone]
Zwenkauer Strasse 159 Fax: [phone]
D - 04420 Markranstädt e-mail: [email protected]
Internet: www.foedisch.de

Dr. Födisch
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Page 2 of 30 Operation manual PFM 92 C Version 3.0
Dr. Födisch Umweltmesstechnik AG
Zwenkauer Strasse 159
D - 04420 Markranstädt
Telephone: [phone]
Fax: [phone]
e-mail: [email protected]
Internet: www.foedisch.de
Date of operation manual: 11.02.2010
File path: N:\PFM\PFM92C\Bedienungsanleitung\en\en.pfm92c 3.1a.doc
© Dr. Födisch Umweltmesstechnik AG 1992 - 2010
This operation manual is not subject to the service of change. Distribution and duplication of the operation
manual and all related documents as well as use and communication of its content are forbidden unless it
has not been permitted explicitly in written way by Dr. Födisch Umweltmesstechnik AG. Any violation obliges
to compensate the loss.
All rights are reserved for the case of a registration of a patent, utility patent or design patent.

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Version 3.0 Operation manual PFM 92 C Page 3 of 30
Table of content
1General remarks 5
1.1 General advices.........................................................................................................5
1.2 Advices for handling the manual ...............................................................................5
1.3 Warning advices........................................................................................................6
1.4 Approved use.............................................................................................................6
1.5 Qualified personnel....................................................................................................7
1.6 Warranty Information.................................................................................................7
1.7 Supply and delivery ...................................................................................................8
1.7.1 Scope of supply.........................................................................................................8
1.8 Standards and regulations.........................................................................................8
1.9 Declaration of conformity...........................................................................................8
2Safety advices 10
2.1 General safety advices............................................................................................10
3Structure and function 11
3.1 Structure..................................................................................................................11
3.1.1 Probe .......................................................................................................................11
3.2 Function...................................................................................................................12
3.2.1 Measuring principle .................................................................................................12
4Installation 13
4.1 Selection of the measuring point.............................................................................13
4.2 Installation of the weld-in sleeve..............................................................................14
4.3 Assembly of the probe.............................................................................................14
4.4 Electric connection ..................................................................................................15
4.4.1 Operational voltage (24 VDC) .................................................................................16
4.4.2 Operational voltage (110/230 VAC) ........................................................................17
4.4.3 Status signals ..........................................................................................................18
4.4.4 Analogue output.......................................................................................................18
5Set up 19
6Operation and handling 20
6.1 Measuring signal......................................................................................................20
6.2 Adjust amplification..................................................................................................20
6.3 Selection of operation mode....................................................................................21
6.4 Adjust limit values....................................................................................................23
7Shut down 24
7.1 Dis-assembly...........................................................................................................24
7.2 Disposal...................................................................................................................25
8Maintenance 26
8.1 Maintenance............................................................................................................26
8.1.1 Maintenance works..................................................................................................26
8.2 Cleaning...................................................................................................................26

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Page 4 of 30 Operation manual PFM 92 C Version 3.0
9Failure elimination 27
9.1 Failure.....................................................................................................................27
10 Technical data 28
11 Spare parts & consumables 29
12 Index 30
Figures
Fig. 3.1: Side view PFM 92 C ...........................................................................................11
Fig. 3.2: Measuring principle.............................................................................................12
Fig. 4.1: Entry and exit section..........................................................................................13
Fig. 4.2: Weld-in sleeve ....................................................................................................14
Fig. 4.3: Installation rule.................................................................................................... 14
Fig. 4.4: Probe head..........................................................................................................15
Fig. 4.5: Electric connection 24 VDC................................................................................16
Fig. 4.6: Electric connection 110/230 VAC.......................................................................17
Fig 6.1: Filter diagram with defective filter bags ..............................................................22
Fig. 6.2: Filter diagram with sound filter bags...................................................................22
Fig. 7.1: Disassembly........................................................................................................24
Tables
Table 4.1: Status signals.....................................................................................................18
Table 6.1: Status displays...................................................................................................20
Table 6.2: Conversion of dust signal in mA........................................................................20
Table 6.3: Amplification....................................................................................................... 21
Table 6.4: Test signal..........................................................................................................23
Table 8.1: Maintenance works............................................................................................ 26
Table 9.1: Failure messages............................................................................................... 27
Table 10.1: Technical data..................................................................................................28

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1 General remarks
Version 3.0 Operation manual PFM 92 C Page 5 of 30
1 General remarks
1.1 General advices
The product described by this manual has left the factory in a safety-related proper and
checked state. In order to keep this state and to achieve a perfect and safe product
operation it is only allowed to be used in the way described by the manufacturer.
Moreover the perfect and safe operation of this device requires a correct transportation,
storage and installation as well as a careful operation and maintenance.
This manual contains the necessary information for the determined use of the described
product. It is directed towards technically-qualified staff which have been specially
educated or have knowledge about measuring and control technology - called automation
technology further on.
The knowledge and the technically correct realisation of the safety hints and warnings
contained in this manual are the precondition for safe installation and putting into
operation as well as for safety during operation and maintenance of the product
described. Only professional staff have the required knowledge to interpret as well as to
realise correctly the general safety hints and warnings in the respective individual case.
This manual is within the scope of delivery even if a separated order respectively delivery
had been planned due to logistic reasons. In order to preserve clarity neither all details for
all types of the described product are contained, nor each possible case of installation,
operation, maintenance and use in systems can be considered. If you need further
information or if problems arise which are not treated explicitly in this manual please
contact the respective agency of Dr. Födisch Umweltmesstechnik AG being responsible
for you.
1.2 Advices for handling the manual
In the manual it is described how you can mount, set up, control and maintain the
measuring equipment. Please pay especially attention to texts of warning and advices.

1 General remarks
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Page 6 of 30 Operation manual PFM 92 C Version 3.0
1.3 Warning advices
Safety hints and warnings serve the avoidance of dangers for life and health of users or staff
respectively damages to property. In the manual they are marked by here defined signal words.
Moreover they are marked by symbols at the place of their appearance. The used signal words
mean in this manual and on the product itself the following:
WARNING
means, that death, heavy injuries and / or substantial damages to property can
occur, if necessary precautions are not taken.
Thereby the following risks are differentiated:
WARNING
Danger by electric current
WARNING
Danger by hot surface
ATTENTION
Means that an event or state which is not desired can occur, if the
corresponding advice is not observed.
HINT
Is an important information about the product itself, its handling or that chapter
of manual where special attention shall be paid to.
1.4 Approved use
The product described in this manual has been developed, manufactured, tested and
documented taking into account the appropriate safety standards. No danger therefore
exists in the normal case with respect to damage to property or the health of persons if the
handling guidelines and safety information described for configuring, assembly, approved
use and maintenance are observed. This device has been designed such that safe
isolation is guaranteed between the primary and secondary circuits. Low voltages which
are connected must also be generated using safe isolation. Correct and safe operation of
this analyser is additionally dependent on proper transport, storage, installation and
assembly, as well as careful operation and maintenance.

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1 General remarks
Version 3.0 Operation manual PFM 92 C Page 7 of 30
WARNING
Danger of injury by electric current!
This device is operated by electricity. Following removal of the housing or
guard, or after opening the system cabinet, certain parts of the device/system
are accessible which may carry dangerous voltages. Therefore only suitably
qualified personnel shall work on this device. This must be thoroughly
acquainted with all sources of danger and the maintenance measures as
described in this manual.
1.5 Qualified personnel
Severe personal injury and/or extensive damage to property may occur following
unqualified work on the device/system or the failure to observe the warnings described in
the instructions or on the device/system cabinet. Therefore only suitably qualified
personnel may work on this device/system. Qualified persons in the sense of the safety
information of these instructions or on the product itself are persons who
 are either familiar as project engineers with the safety concepts of automation technology
 or have been trained as operators in the use of automation technology equipment and are
acquainted with the contents of these instructions which refer to operation
 or have been appropriately trained as commissioning and/or maintenance personnel for
such automation technology equipment or are authorised to energise, ground and tag
circuits and devices/systems in accordance with established safety practices.
1.6 Warranty Information
Your attention is drawn to the fact that the contents of these instructions are not part of a
previous or existing agreement, commitment or statutory right and do not change them. All
commitments are contained in the respective sales contract which also contains the
complete and solely applicable warranty conditions. These warranty conditions in the
contract are neither extended nor limited by the contents of this manual.
Changes in design or construction of the filter controller are not allowed. Any intervention
lead to a termination of the warranty.

1 General remarks
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Page 8 of 30 Operation manual PFM 92 C Version 3.0
1.7 Supply and delivery
The respective scope of delivery according to the valid contract is listed on the shipping
documents accompanying the delivery. When opening the packaging, please check that
the delivery is complete and undamaged. Please keep the packaging material in order to
return the device, if necessary.
1.7.1 Scope of supply
The Particle Flow Meter PFM 92 C consists in standard version of the following
components:
 1 probe
 1 1“-weld-in sleeve with screwing
 1 operation manual
HINT
Depending on the order configuration deviations in the technical design are
possible.
1.8 Standards and regulations
The harmonised European standards have been applied to the specification and
production of this device as far as possible. If no harmonised European standards have
been used, the standards and regulations for the Federal Republic of Germany apply.
1.9 Declaration of conformity
CE-Symbol
The Particle Flow Meter PFM 92 C complies with the requirements of the EU guidelines
listed below.
EG-low voltage directive
The Particle Flow Meter PFM 92 C complies with the requirements of the EU low voltage
directive 2006/95/EG dated 12. Dezember 2006.
EMC-Guideline
The Particle Flow Meter PFM 92 C complies with the requirements of the EU guideline
89/336/EEC “Electromagnetic Compatibility” in the product family norm EN 61326.
The Particle Flow Meter PFM 92 C is designed for the use in industrial applications.

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1 General remarks
Version 3.0 Operation manual PFM 92 C Page 9 of 30
Requirements for:
Emitted interference Interference immunity
EN 50081-1 EN 61000-6-2
Emitted interference Interference field intensity according to EN 55022 (CISPR 22)
Emitted interference Interference voltage according to EN 55022 (CISPR 22)
Interference immunity ESD according to EN 61000-4-2
Interference immunity HF radiated according to EN 61000-4-3
Interference immunity Burst according to EN 61000-4-4
Interference immunity Surge according to EN 61000-4-5
Interference immunity HF streamed into according to EN 61000-4-6
Interference immunity Power loss EN 61000-4-11
Declaration of conformity
In line with the above-mentioned EU guidelines, the EU declarations of conformity are
available at the following address for inspection by appropriate authorities:
Dr. Födisch Umweltmesstechnik AG
Zwenkauer Straße 159
D-04420 Markranstädt
Tel.: [phone]
Fax.: [phone]
e-Mail: [email protected]

2 Safety advices
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Page 10 of 30 Operation manual PFM 92 C Version 3.0
2 Safety advices
2.1 General safety advices
WARNING
Risk of injury due to non-observance of safety advices!
Operate the measuring device PFM 92 C only in perfect state and under strict
observance of the safety hints!
 Before the PFM 92 C is allowed to be used, the complete manual must have been read and
understood.
 The PFM 92 C as a whole as well as the single components are only allowed to be operated
in the original state. If elements are changed the manufacturer’s original parts shall be used.
 Elements are device-typically configured and, therefore, cannot be changed among various
PFMs.
 Changes in design or configuration of the PFM 92 C are not allowed.
 The filter controller PFM 92 C is only allowed to be connected to the supply voltage written
on the type plate (Standard: 24 VDC).
 The PFM 92 C is only allowed to be operated at a power supply with ground contact. The
protective effect must not be revoked by an extension cable without protective conductor.
Each interruption of the protective conductor inside or outside the device is dangerous and
not permitted.
 The PFM 92 C has to be secured by 2 A on input side..
 Before opening any component of the device the dust measuring device PFM 92 C has to be
made free of voltage by pulling the power connector.
 Neither it is allowed to use the PFM 92 C in potential explosive rooms nor to measure in
explosive gaseous mixtures.
 Cables and gas pipes should be assembled in a way that a danger of accident by stumbling
or getting caught on the pipes can be excluded.
 Parts of the probe can get into contact with hot measuring gas and can, therefore, be heated
up. Therefore please never touch these parts without temperature-resistant gloves or under
voltage.
 Changes in the configuration of the PFM 92 C , that means the mis-adjustment of
parameters which usually are not at the user’s disposal, can endanger the safety and
functioning of the filter controller and are done at one’s own risk! Therefore changes in
configuration shall be executed by authorised service technicians or by manufacturer’s staff.
 Coverings of PFM 92 C are only allowed to be removed in the state free of voltage.
 It should be possible to switch off the PFM 92 C by a switch being close to the device.
WARNING
Risk of injury due to lack of expertise!
Installation, operation, maintenance and all kind of repair have to be done
solely by skilled staff referring to the corresponding regulations.
(Zentralverband der Elektrotechnik- und Elektroindustrie e.V.).

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3 Structure and function
Version 3.0 Operation manual PFM 92 C Page 11 of 30
3 Structure and function
3.1 Structure
The filter controller PFM 92 C consists of the following components:
 1 in-situ probe
 1 weld-in sleeve
3.1.1 Probe
The probe PFM 92 C consists of a probe rod and a probe head. The probe rod is
assembled in a sleeve and an insulator which insulates it electrically from the case.
probe rod
insulator
probe head
cable entry
58 mm146 mm300 mm
173 mm
35 mm
Fig. 3.1: Side view PFM 92 C

3 Structure and function
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Page 12 of 30 Operation manual PFM 92 C Version 3.0
3.2 Function
The filter controller PFM 92 C is a highly sensitive system for continuous, triboelectric in-
situ filter monitoring. The qualitative monitoring of the exhaust gas is done hereby.
The measuring gas is measured triboelectrically in the exhaust gas flow by means of the
probe rod of the PFM 92 C (see 3.2.1 Measuring principle Page 12).
The signal resulting from the derived current is a degree for the exhaust gas’ dust content.
The micro controller integrated in the control unit produces a dust proportional signal
which is provided as 4 … 20 mA – signal.
3.2.1 Measuring principle
Probe
Probe rod
Insulator
Fig. 3.2: Measuring principle
Triboelectricity:
If 2 bodies get into contact with each other by
friction or touch, a charge transfer will occur. The
charge difference arises by the exchange of
electrons between atoms on the surfaces. So a
boundary layer with a positive and negative
surface charge within a very low molecular
distance from each other is formed.
This charge difference, also called charge fluctuation, is the basis for triboelectric dust
meters which use the charge exchange between measuring probe and nearby streaming
or direct impacting dust particles.
The triboelectric signal depends on the mechanical and electric properties of the dusts.
 Ci.B.  = dust concentration [mg/m³]
 S  = triboelectric measuring signal
.B.i
c~S
 at constant velocity!

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4 Installation
Version 3.0 Operation manual PFM 92 C Page 13 of 30
4 Installation
4.1 Selection of the measuring point
WARNING
Risk of measuring failures.
The point of installation of the weld-in sleeve must be grounded Therefore the
weld-in sleeve has to be integrated into the local potential equalisation!
The place of installation of the probe has to meet the requirements of local valid
guidelines (e.g. EN 13284-1, in Germany: VDI 2066 page 1). In case of doubts it is
recommended to let have determined the measuring point by a responsible measuring
institute (in Germany according to §§ 26/28 BImSchG). We recommend to realise at least
5 times the diameter of the exhaust gas channel as entry and exit section.
Right!
Wrong!
< 5 x D
Right!
2 x D 5 x D
VDI 2066 pg. 1
EN 13284-1
VDI 2066 pg. 1
EN 13284-1
5 x D
VDI 2066 pg. 1
EN 13284-1
5 x D
Fig. 4.1: Entry and exit section
Basically it has to be considered that the dust and smoke gas distribution must prevail as
homogeneously as possible at the measuring point in order to get a representative
measurement of the dust content across the channel cross – section.
WARNING
Risk of measuring failures.
The probe profile should be protected against rain falling down!

4 Installation
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Page 14 of 30 Operation manual PFM 92 C Version 3.0
4.2 Installation of the weld-in sleeve
The weld-in sleeve of the PFM 92 C is installed according to Fig. 4.2: Weld-in sleeve
The installation position of the probe is horizontal or vertical from top.
weld-in sleeve
2°...5°
stack wall
weld-in angle
3 mm
Fig. 4.2: Weld-in sleeve
4.3 Assembly of the probe
At first the gasket has to be fitted into the sleeve. Then the probe is pushed up against it
and fixed with the quick clamp.
probe rod
probe head
58mm
146mm
300mm
173mm
35mm
5 Grad
weld-in sleeve
cable entry
flue gas
stack
1. fit gasket
3. close quick clamp
and screw probe
2. insert probe
Fig. 4.3: Installation rule

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4 Installation
Version 3.0 Operation manual PFM 92 C Page 15 of 30
4.4 Electric connection
WARNING
Risk of injury if safety advices are not observed!
The measuring device PFM 92 C must not be opened in potentially explosive
dust atmosphere!
The electric connections of the PFM 92 C are inside the probe head. The terminals are
arranged in a terminal strip which can be seen after removal of the cover. To get there 4
screws have to be unscrewed and the cover has to be removed.
Probe head
Cable entry
Screw
Screw
Screw
Screw
78 mm
173 mm
Fig. 4.4: Probe head
The terminals are designed as plug terminals. For connecting the cable no special tool is
required.

4 Installation
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Page 16 of 30 Operation manual PFM 92 C Version 3.0
4.4.1 Operational voltage (24 VDC)
not occupied failure failure limit value 2 limit value 2 limit value 1 limit value 1 not occupied not occupied analog output - 4...20 mA
3 4 5 6 7 8 9 11
L+ feeding 24 VDC L- 24 VDCfeeding
1 2
analog output +4...20 mA
12
switch to select gain
LED integration (yellow)
switch integration on/off
LED red)limit value 2 (
potentiometer limit value 2
LED red)limit value 1 (
potentiometer limit value 1
limit value switch
test terminals 0-1Volt = 0-100%
LED limit value 2 (green)
LED failure (green)
LED limit value 1 (green)
A
TTENTION:
only
Connect power supply
on this terminals!
Fig. 4.5: Electric connection 24 VDC
WARNING
The operational voltage 24 VDC is connected to the terminals 1 and 2!

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4 Installation
Version 3.0 Operation manual PFM 92 C Page 17 of 30
4.4.2 Operational voltage (110/230 VAC)
PE protective conductor failure failure limit value 2 limit value 2 limit value 1 limit value 1 not occupied not occupied analogue output- 4...20 mA
3 4 5 6 7 8 9 11
L feeding 230/110 VAC N feeding 230/110 VAC
1 2
analogue output +4...20 mA
12
switch to select gain
LED Integration (yellow)
switch integration on/off
LED red)limit value 2 (
potentiometer limit value 2
LED red)limit value 1 (
potentiometer limit value 1
limit value switch
test terminals 0-1Volt = 0-100%
LED limit value 2 (green)
LED failure (green)
LED limit value 1 (green)
A
TTENTION:
only
Connect power supply
on this terminals!
Fig. 4.6: Electric connection 110/230 VAC
WARNING
The operational voltage 110/230 VAC is connected to the terminals 1, 2 and 3!

4 Installation
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Page 18 of 30 Operation manual PFM 92 C Version 3.0
4.4.3 Status signals
The status signals are made as potential-free contacts. These contacts are only allowed
to be loaded with low voltage 24 V, max. 0,1 A.. The following status signals are provided
at the PFM 92 C:
Signals Contact position
 Failure F9 Failure elimination page 27  Normally closed (NCC),
in case of failure opened
 Limit value 1  Normally closed (NCC),
in case of limit value violation opened
 Limit value 2  Normally closed (NCC),
in case of limit value violation opened
Table 4.1: Status signals
4.4.4 Analogue output
The analogue output of the PFM 92 C is made as 4 ... 20 mA output. An external
analogue separator has to be used for the galvanic isolation of the output signal. The
following signal can be provided by the PFM 92 C:
 Analogue output -> dust in [%]
WARNING
Risk of device demolition (loss of warranty)!
The analogue output of the PFM 92 C is active! It must not be supplied with
voltage under any circumstances!

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5 Set up
Version 3.0 Operation manual PFM 92 C Page 19 of 30
5 Set up
1. Switch on pre-fuse
2. Check provided measuring values for plausibility
3. Adjust measuring range / amplification , if necessary (see 6.2 Adjust amplification Page 20)
4. Adjust operation mode, if necessary (see 6.3 Selection of operation mode Page 21)
5. Adjust limit values (see 6.4 Adjust limit values Page 23)

6 Operation and handling
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Page 20 of 30 Operation manual PFM 92 C Version 3.0
6 Operation and handling
After all electric connections have been made, the device is ready for operation within ca.
10 to 15 min. All control elements of the PFM 92 C are on the signal board – a selector
switch for the amplification [S2], a switch for the selection of the operation mode
integration [S1] and a tip button [S3] for adjustment of the limit values as well as diverse
LED – displays (see Fig. 4.5).
WARNING
Risk by non-observance of the safety advices!
The measuring device PFM 92 C must not be opened in potentially explosive
dust atmosphere!
6.1 Measuring signal
The PFM 92 C does not have a display. The measuring signal is only provided via a
4 ... 20 mA analogue signal output. The signal output supplies a dust-equivalent signal.
Status messages are provided via status contacts and additionally via LED on the board
of the PFM 92 C (see Fig. 4.5).
 display Failure (at in operation: green)
 display of limit value violations (at below the value: green)
 display of integration (at Integration: yellow)
 display of limit value adjustment activated (at activated: red)
Table 6.1: Status displays
6.2 Adjust amplification
In order to adjust the sensitivity of the PFM 92 C the amplification of the electronic has to
be adjusted manually. The corresponding amplification selector is on the board of the filter
controller [S2] (see Fig. 4.5). The following procedure is recommended:
1. Turn amplification selector [S2] first on stage 3 and switch [S1] for the operation mode
Integration at on (LED [L1] flashes yellow).
For the standard operation of the filter plant the output signal between the cleaning cycles
should have a value between ca. 3 % and 25 % (ca. 4,5 mA ... 8 mA).
Dust signal in [%] Current output in [mA]
0 4,00
3 4,48
25 8,00
50 12,00
75 16,00
100 20,00
Table 6.2: Conversion of dust signal in mA