Foreword
8207A_002-824e-07.23 Page 1
Foreword
Thank you for choosing a Kistler quality product
characterized by technical innovation, precision and long
life.
Information in this document is subject to change without
notice. Kistler reserves the right to change or improve its
products and make changes in the content without
obligation to notify any person or organization of such
changes or improvements.
© 2018 … 2023 Kistler Group. Kistler Group products are
protected by various intellectual property rights. For more
details visit www.kistler.com. The Kistler Group includes
Kistler Holding AG and all its subsidiaries in Europe,
Asia, the Americas and Australia.
Kistler Group
Eulachstrasse 22
8408 Winterthur
Switzerland
Tel. +41 52 224 11 11
www.kistler.com
Uniaxial high temperature accelerometer Type 8207A…
2 8207A_002-824e-07.23
Content
1. Introduction .................................................................................................................................. 4
2. Important information ................................................................................................................. 5
2.1 Protection and standards .................................................................................................... 5
2.2 Precautions ......................................................................................................................... 6
2.3 Disposal instructions for electrical and electronic equipment ............................................. 6
2.4 Personal safety warnings .................................................................................................... 6
2.5 Ex-Approval – Versions for operation in hazardous areas ................................................. 7
2.5.1 ATEX- and IECEx-Approval ................................................................................... 8
3. Product description..................................................................................................................... 9
3.1 Technical data ..................................................................................................................... 9
3.2 Ordering key ........................................................................................................................ 9
4. Operation .................................................................................................................................... 10
4.1 General instructions for operation ..................................................................................... 10
4.1.1 Ground isolated measuring chain ........................................................................ 10
4.2 Application in non-hazardous areas .................................................................................. 10
4.2.1 Sensor execution .................................................................................................. 10
4.2.2 Ground isolated measuring chain ........................................................................ 11
4.2.3 Marking ................................................................................................................. 11
4.3 Application in hazardous areas ......................................................................................... 11
4.3.1 Instructions for application in hazardous areas .................................................... 11
4.3.2 Sensor executions ................................................................................................ 12
4.3.3 Ambient temperature range ................................................................................. 12
4.3.4 Specific conditions of use for the safe operation ................................................. 12
4.3.5 Marking on sensor ................................................................................................ 13
4.3.6 Labeling and packaging ....................................................................................... 13
4.3.7 Non-sparking equipment (Ex-nA) for use only in zone 2 ..................................... 14
4.3.7.1 Non sparking measuring chain (Ex-version) ......................................... 14
4.3.7.2 Maximum values for electrical connection ............................................ 14
4.3.8 Intrinsic safety equipment (Ex-ia) ......................................................................... 15
4.3.8.1 Intrinsic safety measuring chain (Ex-version) ....................................... 15
4.3.8.2 Entity parameter of the sensor .............................................................. 15
5. Installation .................................................................................................................................. 16
5.1 Mounting bore ................................................................................................................... 16
5.2 Sensor mounting and removal .......................................................................................... 17
5.2.1 Mounting of the sensor ......................................................................................... 18
5.2.2 Sensor removal .................................................................................................... 19
5.3 Cable handling and fixation ............................................................................................... 20
5.3.1 Mineral Insulated hardline cable .......................................................................... 20
5.3.2 Cable fixation ........................................................................................................ 20
5.4 Electrical connection ......................................................................................................... 21
5.4.1 Options ................................................................................................................. 21
5.4.2 2-pole Lemo connector ......................................................................................... 22
5.4.3 2-pole 7/16”-connector ......................................................................................... 22
5.4.4 Open leads ........................................................................................................... 23
5.5 Service and maintenance .................................................................................................. 23
5.6 Measuring chain compontents and accessories ............................................................... 23
6. Calibration and repair ............................................................................................................... 24
6.1 Calibration ......................................................................................................................... 24
6.2 Repair ................................................................................................................................ 24
Introduction
8207A_002-824e-07.23 Page 3
7. Declaration of Conformity ......................................................................................................... 25
Total pages: 25
Uniaxial high temperature accelerometer Type 8207A…
4 8207A_002-824e-07.23
1. Introduction
Please read through this manual thoroughly to enable
you to fully exploit the various features of your product.
To the extent permitted by law Kistler accepts no liability
if this instruction manual is not followed or products other
than those listed under Accessories are used.
These instructions describe the piezoelectric uniaxial
high temperature accelerometer Type 8207A.
Our thermoacoustics product and application brochures,
in addition to our detailed data sheets, will provide you
with an overview of our product range.
If you require additional assistance beyond what can be
located online or in this manual, please contact Kistler‘s
extensive support organization or visit us online at
www.kistler.com/thermoacoustics
Important information
8207A_002-824e-07.23 Page 5
2. Important information
It is essential to review the following information, which is
intended to ensure your personal safety when working
with high temperature acceleration sensors and
contribute toward a long-fault-free service life.
To the extent permitted by law Kistler accepts no liability
if this instruction manual is not followed or products other
than those listed under Accessories are used.
2.1 Protection and standards
All equipment is tested and has left the factory in a
perfect, safe condition. In order to maintain this
condition and to ensure safe operation, it is essential
to follow strictly the instructions and warnings
contained in these operating instructions or printed on
the product itself.
Compliance with local safety regulations that apply to the
use of electrical and electronic equipment is to be
followed.
The sensor Type 8207A... is in compliance with CE and
complies with the following provisions of the directives:
• ISO 9001
• 2011/65/EU (ROHS)
• 2014/30/EU (EMC)
• 2014/34/EU (ATEX
Hazardous area:
The following harmonised standards were applied:
• EN 60079-0:2012+A11:2013/IEC 60079-0:2011
• EN 60079-11:2012/IEC 60079-11:2011
• EN 60079-15:2010/IEC 60079-15:2010
Uniaxial high temperature accelerometer Type 8207A…
6 8207A_002-824e-07.23
2.2 Precautions
Compliance with the following precautionary
measures is vital to ensure safe and reliable
operation:
The equipment should be used only under the
specified operating conditions.
If there is evidence that safe operation is no longer
possible, the instrument must be powered off and
rendered safe against accidental start-up.
Safe operation is no longer possible when the product
▪ shows visible signs of damage
▪ is no longer operating
▪ has been subjected to prolonged storage under
unsuitable conditions
2.3 Disposal instructions for electrical and electronic equipment
Do not discard old electronic instruments in municipal
trash. For disposal at end of life, please return this
product to an authorized local electronic waste
disposal service or contact your local Kistler Instrument
sales office for disposal instructions.
2.4 Personal safety warnings
Labels and markings are provided on the monitor to
guide the system integrator in the processes of choosing
appropriate interface equipment, determining safe use
conditions, and identifying recommended installation
procedures. The format of these markings are governed
by the standards that dictate safe use and environmental
compliance in a variety of regions and regulated settings.
Important information
8207A_002-824e-07.23 Page 7
2.5 Ex-Approval – Versions for operation in hazardous areas
Lesen und verstehen Sie das Handbuch vor
der Inbetriebnahme!
Read and understand manual before opera-
ting!
Lire et comprendre le manual avant d'utili-
ser!
WARNING: HAZARDOUS ENVIRONMENT
Risk of explosive atmosphere!
A potentially explosive atmosphere occurs where
there is a combination of flammable substances and
oxygen. Oxygen is usually present as a component in
the ambient air, which is why the warning of potential
explosion hazards must be considered very seriously.
Prevent corrosion and failure by checking that all
components are compatible as described in the
installation instructions.
Do not connect or disconnect the equipment when
energized unless the area is known to be non-
explosive.
Important:
▪ The sensor must not be modified in any way.
Otherwise the ATEX, IECEx and all other Ex
approvals will become invalid.
▪ Substitution of components may impair suitability for
hazardous area.
▪ Explosion Hazard. Do not connect or disconnect
when energized unless the area is free of ignitible
concentrations.
All Ex-relevant specifications have been adopted from
the EU type examination and Ex-certificates in these
operating instructions.
The special conditions for installation in hazardous
areas must be observed in particular!
If required, the Ex certificates can be ordered at the
manufacturer.
The IECEx certificate can be viewed online at
www.iecex.com
Uniaxial high temperature accelerometer Type 8207A…
8 8207A_002-824e-07.23
2.5.1 ATEX- and IECEx-Approval
All sensors of the 8207AE... series. are certified for use in
"potentially explosive atmospheres" according to the
ATEX directive and IECEx standards.
The sensors are certified as Ex-ia (intrinsically safe) and
Ex-nA (non-sparking).
Type of
protection
Ex-ia (intrinsically safe)
Ex-nA (non sparking)
ATEX
II 1G Ex ia IIC T6 … T710
SEV 17 ATEX0140X
II 3G Ex nA IIC T6 … T710
SEV 17 ATEX0140X
IECEX
Ex ia IIC T6 … T710 Ga
IECEx SEV 17.0012X
Ex nA IIC T6 … T710 Gc
IECEx SEV 17.0012X
Product description
8207A_002-824e-07.23 Page 9
3. Product description
Basic execution
Sensor Type 8207A… is a 2-wire, internally ground
isolated differential piezoelectric accelerometer. The
sensor is equipped with an integral mineral insulated
hardline cable and is available with different cable
terminations.
Ex-Versions
All sensors of the series 8207AE... are certified fo ruse in
„hazardous areas“.
The sensors have the following approvals for hazardous
areas:
▪ ATEX
▪ IECEx
3.1 Technical data
The sensors may only be used acc. to the technical
specifications made in the respective data sheet.
The technical specifications are given in data sheet
003-333.
3.2 Ordering key
Fig. 1: Ordering key
Uniaxial high temperature accelerometer Type 8207A…
10 8207A_002-824e-07.23
4. Operation
For proper operation it is necessary to first determine
whether the sensor is installed in a potentially explosive
atmosphere.
4.1 General instructions for operation
The following instructions regarding the installation
and operation must be followed:
▪ The sensor is hermetically sealed. The
integral cable meets ingress protection IP50
and must be protected against adverse
environmental effects where necessary.
▪ The sensor may only be used for its intended
purpose. Any violation will waive all
warranties and responsibilities of the
manufacturer.
▪ IP degree has to be maintained.
▪ The sensors may only be used within the
specifications listed in the sensor’s data sheet
and operating instructions.
4.1.1 Ground isolated measuring chain
For measurements of very small pressure fluctuations
and in environments with electromagnetic interference, it
is recommended to operate the measurement chain
completely ground isolated.
This requires a differential charge amplifier. Depending
on the required application, Kistler recommends the
differential charge amplifier Type 5183 (Ex ia) of Type
5185 (Ex nA).
Measuring chain examples are shown in Kistler
document No. 960-201.
4.2 Application in non-hazardous areas
4.2.1 Sensor execution
In non-hazardous areas the sensor without Ex certifica-
tion Type 8207A- … can be used
Operation
8207A_002-824e-07.23 Page 11
4.2.2 Ground isolated measuring chain
Fig. 2: Recommended measuring chain for operation in non-hazardous areas
4.2.3 Marking
The standard execution, “non Ex-Version” is marked as
follows on the package:
Kistler Instrumente AG
Winterthur Switzerland
Sensor Type: 8207A- …
SN: …
4.3 Application in hazardous areas
4.3.1 Instructions for application in hazardous areas
In addition to the general instructions for proper
operation under 4.1 and Ex approvals 2.5, the
following instructions must also be followed when
installing and commissioning in hazardous areas:
▪ The sensor may be used in constantly, long-
term or frequently hazardous locations. Prior
to installation, the installation site and its
potential explosion hazard must be assessed
and the suitability of the sensors determined.
▪ The provisions of EN 60079-10 / EN 60079-
14 or the corresponding local regulations
must be met during installation and commis-
sioning of the sensor in hazardous locations.
The operation of the sensor should be carried
out by specially trained personnel.
▪ Installation of intrinsic safety circuits must be
conducted by qualified and authorized
personnel only and in accordance with the
instructions of the contractor.
▪ All electrical connections must be properly
connected. The input ratings are safety limit
values which must not be exceeded.
▪ No modifications are permitted on any equip-
ment that is certified for use in hazardous
areas.
Uniaxial high temperature accelerometer Type 8207A…
12 8207A_002-824e-07.23
▪ Defective sensors must be returned to the
manufacturer.
▪ Correlation between temperature class and
permissible ambient temperature range have
to be taken into account according to table 1.
▪ The specific conditions of use have to be
taken into consideration.
4.3.2 Sensor executions
For applications in hazardous areas the sensor version
Type 8207AE… (certified ‚Ex-nA‘ and‚ Ex-ia‘) must be
used.
4.3.3 Ambient temperature range
Permissible ambient temperature at the location of use
(for appropriate use):
Type 8207
Type 8209 & 8211
Temperature class
Ambient temperature range
Ambient temperature range
T6
–55°C … +75°C
–55°C … +75°C
T5
–55°C … +90°C
–55°C … +90°C
T4
–55°C … +125°C
–55°C … +125°C
T3
–55°C … +190°C
–55°C … +190°C
T2
–55°C … +290°C
–55°C … +290°C
T1
–55°C … +440°C
–55°C … +440°C
T490°C
–55°C … +480°C
–55°C … +480°C
T710°C
–
–55°C … +700°C
Tab. 1: Temperature classes and corresponding ambient
temperature ranges
4.3.4 Specific conditions of use for the safe operation
Specific conditions of use for ATEX- and IECEx-
Approval:
1. See equipment description for ambient tempera-
ture restrictions or in the Instruction manual at
4.3.3.
2. For ignition protection type "nA":
▪ The connector or the flying leads of the integral
mineral insulated cable shall be installed in an
enclosure that provides a degree of protection
not less than IP 54 in accordance with lEC
60079-15.
▪ “Transient protection shall be provided that is set
at a level not exceeding 140% of the peak rated
voltage value at the supply terminals to the
equipment".
Operation
8207A_002-824e-07.23 Page 13
4.3.5 Marking on sensor
Marking on sensor top
Kistler
Type …
SN …
CE…
Minimal marking for ATEX / IECEx
Due to lack of space, the minimal Ex marking is engraved on
the sensor.
4.3.6 Labeling and packaging
The relevant declaration of conformance- and explosion pro-
tection symbols are shown on a label that is affixed to the
product package.
ATEX/ IECEX:
Uniaxial high temperature accelerometer Type 8207A…
14 8207A_002-824e-07.23
4.3.7 Non-sparking equipment (Ex-nA) for use only in zone 2
4.3.7.1 Non sparking measuring chain (Ex-version)
The sensor can be used in non-sparking measuring
chains in Ex-classified zone 2.
For application in hazardous areas the sensor must be
operated with an accordingly Ex-certified differential
charge amplifier.
Delivery includes the sensor only.
Appropriate apparatus such charge amplifier,
softline cable, junction box and galvanic
separation has to comply with the Ex-
certificate. For recommendations visit us on
www.kistler.com/thermoacoustics
Fig. 3: Example of a non-sparking measuring chain for zone 2
4.3.7.2 Maximum values for electrical connection
Maximum input voltage: 30 V
Maximum input current: 130 mA
Operation
8207A_002-824e-07.23 Page 15
4.3.8 Intrinsic safety equipment (Ex-ia)
4.3.8.1 Intrinsic safety measuring chain (Ex-version)
The sensor may be connected to intrinsically safe
measuring chain in Ex-classified zone 0, 1 and 2. To
ensure safe use, observe the electrical input ratings in
accordance with the temperature classes as specified
in the chapter "4.3.8.2 Entity parameter of the
sensor".
For operation in hazardous areas, the sensor must be
operated with an Ex-certified differential charge ampli-
fier and a corresponding Ex-certified barrier. The
entity parameters between the sensor and dif-
ferential charge amplifier respectively differential
charge amplifier and barrier must be appropriately
matched to each other.
Delivery includes the sensor only.
Appropriate apparatus such charge amplifier, softline
cable, junction box and galvanic separation has to
comply with the Ex-certificate. For recommendations
visit us on auf www.kistler.com/ thermoacoustics
Fig. 4: Example of an intrinsic safety measuring chain for zone 0, 1 or 2
4.3.8.2 Entity parameter of the sensor
Maximum values of electrical connection with
non-detachable cable:
Ui V ≤ 30
Li mA ≤ 130
Pi W ≤ 0,8
Ci pF ≤ 15 + 170 pF/m * cable length
Li μH ≤ 0 + 1.5 μH/m * cable length
Uniaxial high temperature accelerometer Type 8207A…
16 8207A_002-824e-07.23
5. Installation
The quality of the threaded holes as well as the
installation according to the instructions are essential to
assure proper performance of the sensor within the given
specification.
5.1 Mounting bore
An uneven contact surface significantly reduces the
accuracy of the frequency bandwith.
For the version with ARINC footprint (8207A_1C_J_)
prepare the mounting bores according to Figure 5.
For the version with the square footprint (8207A_2C_J_)
prepare the mounting bores according to Figure 6.
Fig. 5: Mounting bores for ARINC footprint sensor Type 8207A_1C_J_
Installation
8207A_002-824e-07.23 Page 17
Fig. 6: Mounting bores for square footprint sensor Type 8207A_2C_J_
5.2 Sensor mounting and removal
To remove the sensor do not pull on the cable but hold
the sensor body tightly and lift upwards.
Uniaxial high temperature accelerometer Type 8207A…
18 8207A_002-824e-07.23
5.2.1 Mounting of the sensor
Install the sensor with the according mounting screws,
see table 3.
High temperature screw paste Type 1059 must be
applied to the mounting srew.
The tightening torque must be observed.
Sensor
execution
Temperature
[°C]
Mounting screw
Tightening
torque
[Nm]
ARINC
footprint
8207A_1C_J_
<350
8445AS1
M4x12
2.9
>350
8445AS1HT
M4x12
2.9
Square
footprint
8207A_2C_J_
<350
8445AS2
M6x30
4
>350
8445AS2HT
M6x30
4
Table 3: Mounting screws depending on sensor footprint and operation
temperature
Fig. 7: Mounting of ARINC footprint sensor Type 8207A_1C_J_
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