Burster 9235 Manuale utente
In-Line Amplifier for Strain Gauge Sensors
Page 1
Model 9235
Preparations
for operation
Operation
Calibration
and adjustment
Maintenance and
customer service
Technical
data
Appendix General
Information
Operation
elements
In-Line-Amplifier for
Strain Gauge Sensors
Model 9235
© 2005 burster
präzisionsmeßtechnik gmbh & co kg
All rights reserved
Edition 22.04.2005
Manufacturer:
burster präzisionsmeßtechnik gmbh & co kg
Talstraße 1 - 5 PO Box 1432
76593 Gernsbach 76587 Gernsbach
Note:
The following information may be amended without prior notice. No part of this document may be
reproduced or processed using electronic systems without prior consent in writing.
burster provides no warranty of any kind with respect to this material, including the implied warranty
of merchantable quality and fitness for purpose.
burster is not liable under any circumstances for errors, incidental damage or consequential loss
sustained in connection with the function or use of this material.
Model 9235
Page 2
In-Line Amplifier for Strain Gauge Sensors
Preparations
for operation
Operation
Calibration
and adjustment
Maintenance and
customer service
Technical
data
Appendix General
Information
Operation
elements
1-2
In-Line Amplifier for Strain Gauge Sensors
Page 3
Model 9235
Preparations
for operation
Operation
Calibration
and adjustment
Maintenance and
customer service
Technical
data
Appendix General
Information
Operation
elements
Model 9235
Page 4
In-Line Amplifier for Strain Gauge Sensors
Preparations
for operation
Operation
Calibration
and adjustment
Maintenance and
customer service
Technical
data
Appendix General
Information
Operation
elements
In-Line Amplifier for Strain Gauge Sensors
Page 5
Model 9235
Preparations
for operation
Operation
Calibration
and adjustment
Maintenance and
customer service
Technical
data
Appendix General
Information
Operation
elements
Table of contents
Page
1. General Information
1.1 Safety information................................................................................... 7
1.2 Application .............................................................................................. 9
1.3 Description.............................................................................................. 9
2. Preparations for operation ............................................................................. 11
2.1 Unpcking of device ............................................................................... 11
2.2 Initial operation ..................................................................................... 11
2.3 Supply voltage ...................................................................................... 11
2.4 Pin assignment ..................................................................................... 11
2.4.1 Version with Submin-D-Connectors ......................................... 11
2.4.2 Version with clamps ................................................................. 12
2.5 Grounding and potential bonding ......................................................... 13
2.6 Function test ......................................................................................... 13
2.7 Checking / Calibration interval.............................................................. 14
2.8 Mounting............................................................................................... 14
2.9 Storage ................................................................................................. 14
3. Operation elements ......................................................................................... 11
3.1 Side wall ............................................................................................... 15
3.2 Top ................................................................................................. 15
4. Operation ................................................................................................. 17
4.1 Switch on after storage or blackout ...................................................... 17
4.2 Supply of sensor................................................................................... 17
4.3 Zero point ............................................................................................. 17
4.4 Amplification ......................................................................................... 17
4.5 Sensivity ............................................................................................... 18
4.6 Input reference point............................................................................. 18
4.7 Calibration shunt................................................................................... 18
Model 9235
Page 6
In-Line Amplifier for Strain Gauge Sensors
Preparations
for operation
Operation
Calibration
and adjustment
Maintenance and
customer service
Technical
data
Appendix General
Information
Operation
elements
Page
5. Calibration and adjustment of the instrument ................................................. 19
5.1 With physical values ................................................................................ 19
5.2 With prescision voltage source................................................................ 19
5.3 With strain gage simulator ....................................................................... 20
5.4 With calibration step ................................................................................ 20
6. Maintenance and customer service .................................................................. 21
6.1 Maintenance ............................................................................................ 21
6.2 Customer service..................................................................................... 21
7. Technical data .................................................................................................... 23
7.1 Measurement specifications .................................................................... 23
8. Appendix .................................................................................................... 25
8.1 Settling of malfuction ............................................................................... 25
8.1.1 Extention cable............................................................................ 25
8.1.2 Mounting of device ...................................................................... 25
8.1.3 Cable route.................................................................................. 25
8.1.4 Sensor installation ....................................................................... 25
8.2 Default settings........................................................................................ 27
8.3 AGeneral information to sensors / sensor data sheets ........................... 27
8.3.1 Measurement voltage.................................................................. 27
8.3.2 Parallel switching of sensors ....................................................... 27
8.4 Explosion protection / Safety barriers...................................................... 27
8.5 SAMPLE -EG-Conformity declaration- ................................................... 28
8.6 SAMPLE -Confirmation acc. to the device safety law- ........................... 29
In-Line Amplifier for Strain Gauge Sensors
Page 7
Model 9235
Preparations
for operation
Operation
Calibration
and adjustment
Maintenance and
customer service
Technical
data
Appendix General
Information
Operation
elements
1. General Information
1.1. Safety information
READ THE INSTRUCTION MANUAL CAREFULLY
PRIOR TO USING THE INSTRUMENT !
Attention
_
To reduce the danger of fire and electrical shock, rain and other humidity should be
avoided.
_
To avoid the risk of an electrical shock, please do not open the housing. Repairs and
services must be effected only by qualified and well trained personnel.
Safety measures
Safety
•This instrument works on 15-30 VAC. Please make sure that the operational voltage
of the instrument is equal to the local feeding voltage. Check the power cable prior to
start of operation.
•If any parts or fluids should enter the device please take off the power cable
immediately. Qualified personnel must check the instrument before you operate it the
next time.
•If you do not want to use the device for a longer period of time you should take foff the
power cable. Always pull on the connector, not on the cable.
General
Information
Model 9235
Page 8
In-Line Amplifier for Strain Gauge Sensors
Preparations
for operation
Operation
Calibration
and adjustment
Maintenance and
customer service
Technical
data
Appendix General
Information
Operation
elements
Aufstellung
•Assure a sufficient airflow so that excessive heat inside the device is avoided.
•Do not place the instrument on surfaces such as carpets or blankets or near
materials such as curtains or wall textiles that could hinder the air circulation.
•Do not place the device near sources of heat such as radiators, hot air outlets
or at places where it is exposed to direct sunlight, light bulbs, excessive dust,
mechanical vibration or impacts
•Keep the device in sufficient distance to other instruments, machines or
installations that are the source to magnetic fields.
•Do not place heavy objects on the devices.
If the device is brought in from a cold to a warm room there might be liquid condensing
in the interior of the device. Please wait a few hours before you operate the
instrument
The necessary law and safety regulations have to be complied with for every
application case. This is valid also for the use of the accessories.
The device serves for signal processing of strain gage sensors. Every other
use is declared as not appropriate.
The device is not meant for unse under safety critical conditions and is not
a safety element in the sense of an appropriate use. The safe and sound
use of this device does imply an appropriate transport, handling, storage,
setup and mounting as well as careful operation and maintenance.
General
Information
In-Line Amplifier for Strain Gauge Sensors
Page 9
Model 9235
Preparations
for operation
Operation
Calibration
and adjustment
Maintenance and
customer service
Technical
data
Appendix General
Information
Operation
elements
1.2 Applikation
Inpracticalapplicationsitoftentimesbecomesnecessarytotransformthemeasuring
signal of a sensor in the most simple way to a standard signal in the sensor’s nearby
environment. This makes a transfer of the measurement values to the central
metrology department or the system’s control easily possible over larger distances
with low losses.
The In-Line-Amplifier offers this function in an ideal way as it is placed in the
connecting cable with the help of wrap connections. Based on its compact and
sturdy construction and its low weight it can be used in almost all applications. Even
movable places of actions that are subject to acceleration forces, e.g. on handling
devices do not pose problems. The device is designed mainly for use outside the
switchboard at almost all places and is configured firmly to one sensor. The
aluminium housing is very stable and offers good protection in rough, industrial
environment.
Users who want to integrate the amplifier on a present board or in another housing
can choose it as an open element with connecting clamps instead of plug contacts.
1.3 Description
The In-Line-Amplifier itself is operated at 15 to 30 V. From this it generates a stable
supply voltage for the sensor. The measuring signals of the sensor that usually
range from 0...5 mV up to 0...10 mV for bridge circuits with strain gages are
amplified to analog 0...10 V.
The values of the sensor are preset roughly by the DIP-switches through an
opening in the housing. The fine tuning of the zero point and amplifier setting is
done with multirange trimmers, accessible with a screw driver through the boring
on the side. The connections of the amplifier are realized by Sub-D-plugs resp.
sockets. Short circuit proof sensor supply and protection against polarity reversal
for the amplifier supply grant extra security. The mounting of the amplifier – if
necessary at all – is realized by clamping or gluing of the housing whereas the open
board has mounting holes for screws of type M 2,5. The limit frequency of the
amplifier is > 1kHz, its weight < 65 g.
General
Information
Model 9235
Page 10
In-Line Amplifier for Strain Gauge Sensors
Preparations
for operation
Operation
Calibration
and adjustment
Maintenance and
customer service
Technical
data
Appendix General
Information
Operation
elements
Device features
CE-sign
Input and Output protection for all measuring leads and energy lines
Wide input voltage range, protected against polarity reversal
10 V – voltage output
3 sensor values configurable
Connectable sensors: Strain gage bridge circuits 350 Ωto 5 kΩ
Sensor supply: 2,5 V without sense lines
Speed of measurements: Limit frequency 1000 Hz
Precision of measurements: < 0,1 % accuracy
Tare: Zero point configurable in wide range
Calibration shunts: externally connectable
Supply voltage range: 15 ... 30 V DC
Current input: max. approx.10 mA (with connected sensor)
General
Information
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