User Manual - EL-CELL

User Manual - EL-CELL
User Manual
Release 1.0
Electrochemical Dilatometer
ECD-3
20. May 2015
© 2015 EL-CELL GmbH
The information in this manual has been carefully checked and believed to be accurate;
however, no responsibility is assumed for inaccuracies.
EL-CELL GmbH maintains the right to make changes without further notice to products
described in this manual to improve reliability, function, or design. EL -CELL GmbH does
not assume any liability arising from the use or application of this product.
EL-CELL GmbH
Tempowerkring 8
21079 Hamburg - Germany
phone: +49 (0)40 790 12 733
fax:
+49 (0)40 790 12 736
e-mail: [email protected]
web: www.el-cell.com
User Manual ECD-3 – Release 1.0
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Content
1
Product Description ...................................................................................... 4
2
Features ....................................................................................................... 7
3
Safety Precautions ....................................................................................... 8
4
Unpacking ..................................................................................................... 8
5
Start-Up ....................................................................................................... 10
6
Assembling the cell inside the glove box .................................................... 14
7
Further assembling outside the glove box .................................................. 18
8
EC-Link Software Installation ..................................................................... 22
9
Calibration and Settings .............................................................................. 22
10 Recording the Displacement Signal with an External Potentiostat ............ 23
11 Using the Reference Electrode ................................................................... 24
12 Dilatometer Disassembly and Cleaning ...................................................... 25
13 Care Instructions ........................................................................................ 26
14 Consumables ............................................................................................... 27
15 Technical Support ....................................................................................... 28
16 Warranty ..................................................................................................... 28
Appendix:
Components Sensor Unit ....................................................................................... 29
Components Cell Body ........................................................................................... 30
Connector and Cable Pin-out .................................................................................. 31
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1 Product Description
The ECD-3 electrochemical dilatometer is dedicated to the measurement of charge induced strain (expansion and shrinkage) of electrodes down to the nanometer range.
The ECD-3 has been particularly developed for the investigation of Li -ion battery and
other insertion-type electrodes. It may, however, also be used for many other
electrochemical systems utilizing aprotic organic electrolyte solutions . The electrode
materials used can either be bound film or single crystals/grains (e.g. or graphite
flakes). The maximum sample size is 10 mm x 1 mm (diameter x thickness).
The heart of the ECD-3 is an electrochemical cell, hermetically sealed against ambient
atmosphere. The two electrodes inside are separated by a stiff glass frit which is fixed
in position. The upper working electrode (WE) is sealed by means of a thin metal foil,
through which any charge-induced thickness change is transmitted towards the
sensor/load unit above. This working principle allows determining the height change of
the working electrode without any interference from that of the counter electrode (CE).
Load
Membrane
Sensor
Current collector
REF
WE (working electrode)
T-Frit
CE (counter electrode)
Current collector
A high-resolution displacement (LVDT) transducer detects dimensional changes of the
WE ranging from 100 nanometers up to 500 micrometers during one and the same
experiment that may last between a few minutes to many days.
The ECD-3 features an integrated USB data logger for recording the electrode
displacement, temperature, cell potentials and current. Analog outputs of displacement
and temperature are provided for integration with external instruments.
For best accuracy and drift stability, the dilatometer is to be operated inside a
temperature controlled chamber.
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Basic structure oft the ECD-3:
Sensor unit
Details shown on the following page
Cell body
Bracket
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Cut drawing oft the ECD-3:
Micrometer screw
LVDT sensor
Sensor plunger
Excenter
Flexure
Load
Locking screw
Sensor Tip
Spacer disc
Glas-T-Frit
Shut-off valve
Reference electrode
Piston
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2 Features
The ECD-3 is an electrochemical dilatometer for measuring changes of thickness of the
working electrode of a battery test cell. The main features of the ECD-3 are briefly
described in the following:

LVDT sensor system with <50 nm resolution, drift stability of <100 nm/hour
(sample-free instrument at constant temperature), and 500 µm full range.

Conditioning electronics with analog output signals (-10 to 10 V) for displacement
and temperature.

Integrated USB data logger for the recording of displacement, temperature, cell
potentials and current.

3-electrode electrochemical cell

Sample (working electrode): bound electrode film or single crystal/grain;
max. sample size 10 mm x 1 mm (diameter x thickness)

Load on working electrode: 0.3 N or 1.3 N

Electrolyte volume: approx. 1 ml

Materials in contact with electrolyte: PEEK, borosilicate glass, EPDM rubber,
stainless steel 316L for aprotic, gold for aqueous electrolytes

Operating temperature range: Cell and sensor: -20 to +70 °C;
Conditioning electronics and data logger: 0 to + 40 °C
Dimensions of the ECD-3 (mm):
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3 Safety Precautions
Use proper safety precautions when using hazardous electrolytes. Wear protective
glasses and gloves to protect you against electrolyte that may accidentally spill out of
the instrument during filling, operation, and disassembly.
4 Unpacking
Check the contents of the packages against the list given below to verify that you
have received all of the required components. Contact EL-CELL, if anything is missing
or damaged. NOTE: Damaged shipments must remain within the original packaging for
freight company inspection.
List of Components:
1.
ECD-3 dilatometer ECD3-00-0025-A, assembled
2.
Box ECD-3 ECE1-00-0006-E, assembled
3.
ECD sensor cable ECE1-00-0036-A
4.
ECD cell cable ECE1-00-0033-E, assembled
5.
Power supply 15W/24V DC ELT9045
6.
Power supply adapter ELT9078
7.
USB cable typ A/B (2.0 m) ELT9167
7
1
6
5
3
4
2
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Accessories Kit:
ECD3-00-0400-A
1.
4 x O-Ring 33.05 mm x 1.78 mm DIC9005
2.
2 x O-Ring 9.75 mm x 1.78 mm DIC9006
3.
2 x O-Ring 2 mm x 1.5 mm DIC9025
4.
2 x O-Ring 50.5 mm x 1.78 mm DIC9026
5.
Membrane (aprotic) 1.4404 ECC1-00-0019-D
6.
Spacer disc (set) 2.1 - 2.3 ECC1-01-0012-F
7.
Demonstration kit (5 x activated carbon electrode foil w/5% PTFE Binder, 10 mm)
ECD1-00-0900-A
8.
Filling tube ECD3-01-0001-A
9.
CD containing EC-Link data logger software ECE1-00-0052-A
10. Tweezers WZG9001
11. Spherical allen screw driver 3 mm WZG9002
12. Allen screw driver 2.5 mm WZG9003
13. Vacuum tweezers WZG9004
14. Set allen wrench ECC1-01-0028-A
3
1
6
2
9
4
7
5
12
14
8
11
10
13
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5 Start-Up
If your are using the ECD-3 the first time, please follow the below procedure starting at
step 1.
1
2
After unpacking the ECD-3, remove the
transport lock from the sensor unit.
Remove the two inner screws first, then the
two outer screws. After that, screw off the
sensor unit from the bracket.
3
4
Screw off the cell body from the bracket.
Now unscrew the spring load from the
bottom of the cell body.
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5
6
Unscrew the reference electrode.
Remove the cover flange by loosing the
three screws.
7
8
There is a stiff plate under the cover
flange, which must later on be replaced by
the provided flexible membrane.
Remove the stiff plate from the cell body.
Later the stiff plate can be used for
checking the cell for leaks if necessary.
9
10
Now the frit flange with the O-Ring and the
piston in the middle are visible.
Slide out the frit flange from below the cell
body.
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11
12
Don’t loose the little O-Ring inside the cell
(it is not fixed).
Pull out the piston from the frit flange.
Remove the T-Frit afterwards.
13
14
Remove the dead volume cover from the
ECD-3 base body by unscrewing the three
screws below the cell.
Remove both O-Rings.
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All the below shown parts need to be dried before they can be moved into the glove
box for assembly. Recommended drying conditions: 80°C, <0.01 mbar, 12 hours.
5
6
4
8
12
1
3
13
2
7
11
1.
Membrane (aprotic) 1.4404
2.
Spacer disc (height depends on the height of your electrode)
3.
T-Frit
4.
Cover flange with three screws
5.
Dead volume cover with three screws
6.
ECD-3 base body
7.
Frit flange
8.
Spring load
9.
Reference electrode
10
9
10. Piston
11. O-Ring 50.5 x 1.78 mm
12. 2 x O-Ring 33.05 x 1.78 mm
13. O-Ring 2 x 1.5 mm
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6 Assembling the cell inside the glove box
After moving the different parts of the disassembled cell body into the glove box, follow
the steps below. Protect yourself and handle the chemicals with care.
15
16
Inside the glove box: Attach the T-Frit
with the smaller side pointing downwards
into the frit flange.
Inside the glove box: Put the lithium
counter electrode (10 mm diameter) on top
of the T-Frit into the frit flange.
17
18
Inside the glove box: Attach the counter
piston from below.
Inside the glove box: Insert the two big
O-Rings and assemble the dead volume to
the cell base again.
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19
20
Inside the glove box: Put this assembly
into the cell base body. Make sure to
properly align the two grooves. Don’t forget
to insert the little O-Ring (see arrow)!
Inside the glove box: Insert the middle
O-Ring (see arrow, DIC9005). Then place
the working electrode with the active side
down on top of the T-Frit.
21
22
Inside the glove box: Put the spacer disc
(height depends on the height of your
electrode) on top of the electrode.
Inside the glove box: Then put the
membrane on top.
23
24
Inside the glove box: Attach the cover
flange.
Inside the glove box: Close the cell body
by tightening the three screws.
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25
26
Inside the glove box: Now screw in the
spring load into the cell base.
Inside the glove box: Before filling the
cell body close the shut-off valve clockwise.
27
28
Inside the glove box: Load the syringe
with approx. 1 ml of electrolyte. Then
connect the syringe to the cell body.
Inside the glove box: Pull back the
syringe piston in order to evacuate the cell.
Hold the vacuum for a few seconds. Then
release the piston.
29
30
Inside the glove box: The electrolyte will
be sucked into the cell by the vacuum
applied. Never push the syringe piston!
Then remove the fill line and syringe.
Inside the glove box: Pick up some
lithium with the reference pin. Make sure
that the hole of the reference pin is
completely filled with lithium metal.
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31
32
Inside the glove box: Lithium must not
come into contact with the Teflon of the
ferrule (see arrow)!
Inside the glove box: Attach the
reference pin to the cell body.
33
34
Inside the glove box: Make also sure that
there is no lithium outside the pin before
attaching it to the cell body.
Inside the glove box: The cell is now
assembled and hermetically sealed, so that
you can take it outside the glove box.
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7 Further assembling outside the glove box
36
35
3
2
1
Hook the assembly into the bracket and
fasten it with the two knurled screws. *
Unlock the locking screw (1) and the
excenter (2) by turning them up clockwise .
Then turn down the micrometer screw (3).
*Before fitting the sensor unit on top of the cell body it must be ensured that the
sensor tip is in its highest possible position. This ensures that the sensor tip is not
pressed accidentally through the membrane when screwing on the sensor unit. When
the sensor tip is pressed through the membrane, the sensor unit may be damaged.
37
38
Attach the sensor unit.
Fasten the screws to fix the sensor unit on
top of the cell body.
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Now you have to connect all cables as showing in the following photo:
1.
EDC cell cable
2.
ECD sensor cable
3.
Power supply + power supply adapter
4.
USB cable
5.
Example: Individual Biologic data logger cable
(available on request)
5
3
1
4
2
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39
2
40
1
Release the locking screw (1). Then release
the excenter counter clockwise (2).**
Adjust the sensor position (gap width) by
turning the micrometer screw counter
clockwise.
** Countersink the sensor tip by turning the micrometer screw counter clockwise. Turn
the micrometer screw until the flexure will move to the central position. The central
position of the flexure is also displayed at the LED bar graph indicator at the electronic
box of the ECD-3.
41
42
Turn it until the bar graph indicator at the
controller box is approximately in the
center position.
Turn it until the bar graph indicator at the
controller box is approximately in the
center position.
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43
44
Open the shut-off valve in order to connect
the dead volume with the cell volume.
Example: Connecting a Biologic data logger
cable (available on request). View the
whole wiring on page 19.
Finally, connect your potentiostat or battery tester to the 4 mm jacks on the front panel
of the controller box. Make sure that both instruments share a common ground (GND)
potential. The rightmost column in the table below refers to the terminology used for
the lead connections of Biologic potentiostats (MPG-2, SP, VSP and VMP series).
http://www.bio-logic.info/electrochemistry-ec-lab/instruments/
Contoller Box
Potentiostat
Biologic Potentiostat, VSP, VMP3, etc.
I1
WE Current
WE
V1
WE Sense
Ref1
REF
Reference
Ref2
V2
-
Ref3
I2
CE
CE
GND
GND
GND
Before starting the electrochemical cycle we recommend holding the cell at constant
potential (or open-circuit) for several hours to allow for baseline stabilization. The initial
rest period helps to discern charging induced dimensional changes from the initial
creeping.
NOTE: All materials display a more or less pronounced creeping. They tend to shrink
when applying a load, and to swell when removing thi s load. A mayor contribution to
the initial creeping seen right after cell assembly is to be assigned to the construction
materials of the dilatometer. Creeping of the working electrode is induced each time the
mechanical properties of the working electrode are altered by charging. Therefore, each
charge induced height change is followed by some creeping. The charge induced
creeping effects are real and not artefacts of the measurement.
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8 EC-Link Software Installation
In order to record the displacement signal together with the cell voltage, cell current,
electrode potential and temperature, the software of the integrated data logger needs
to be installed on a Windows ® PC.

You must be logged into an account with Administrator privileges .

Save your work and close down all active programs.

On the installation CD, run X:\Driver_CDM20814_Setup (where X refers to the CD
drive). This will install the FTDI driver required to establish the USB connection
with the data logger.

On the installation CD, run X:\setup. This will install the data logger software.
Follow any instructions that may appear on your screen.

Once installation is finished plug in the provided USB cable into both the host PC
and the ECD-3 controller box.

Launch the data logger software if not already done.

After a few seconds, the data logger software should report a valid connection and
you are ready to start the measurement.
Additional information on the EC-Link software can be found in a separate manual
(http://el-cell.com/downloads/downloads-manuals).
9 Calibration and Settings
Calibration of the instrument has been carried out at the factory. The corresponding
settings of the EC-Link software are stored in the file settings.txt in the installation
directory on the local hard drive and on the installation CD. If the default settings have
been changed for any reason, the original settings can be restored by copying
settings.txt from the CD into the installation directory of the EC -Link software.
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10 Recording the Displacement Signal with
an External Potentiostat
Many of today’s battery testers and potentiostats provide additional analog inputs that
may be used to record sensor signals along with cell current and potential.
In the following, the combination of the ECD-3 with a Biologic potentiostat (MPG-2, SP,
VSP and VMP series) is described as an example. The Biologic potentiostats feature two
analog inputs that are used here to record both displacement and temperature.
1.
Connect the 9-pin Sub-D connector of the optional analog output cable to the
analog input of the respective VMP3 channel.
2.
In the Biologic EC-Lab software, load the experiment settings ECD-3.mps provided
on the ECD-3 documentation CD. The settings are shown in the External Devices
dialog (see screenshot below; actual settings may differ). Adapt the Parameter
Settings of the charge/ discharge protocol to your particular experiment, if
necessary.
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11 Using the Reference Electrode
The reference electrode assembly is comprised of the reference pin, the set collar
attached to the pin by means of a set screw, the fitting, the spring, and the hollow
screw, cf. the sketch below.
The hollow screw serves to apply the spring pressure on the set collar, thereby gently
pushing the reference pin against the glass frit. The blind bore on the tip of the
reference pin is intended for taking up the reference electrode material. For most
lithium ion chemistries the reference material may be a small piece of lithium metal
picked up by the reference pin. For other aprotic electrolytes, and also for some
aqueous systems, a piece of PTFE bound activated carbon may serve as the (pseudo)
reference material. The optional gold refer ence pin is recommended for use in aqueous
electrolytes.
NOTE: Do not use the gold reference pin in combination with lithium metal as the
reference material.
Components of the reference electrode:
Ferrule 1.5 mm PTFE ECC1-000029-C
O-Ring 5 x1 mm EPDM
DIC9023
Fitting long (with cone)
PPS Techtron 1000 natur
ECC1-00-0039-J
Reference electrode long 1.4404
ECC1-00-0062-L
Set collar 1.7 mm 1.4305
ECC1-00-0038-C
Set screw
DIN 916 – M 2 x 2
Compression spring (Au) 1.4310
FED9017
Hollow screw 1.4305
ECC1-00-0040-A
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12 Dilatometer Disassembly and Cleaning
When disassembling the dilatometer cell, wear protective gloves and glasses.
Collect parts that have been in contact with electrolyte on a separate tray for
subsequent cleaning.
1.
Disconnect the cell cable from the dilatometer cell.
2.
Remove the dilatometer cell from the temperature chamber.
3.
Detach the sensor/load unit from the dilatometer cell.
4.
Detach the cell from the bracket.
Then disassemble the cell body as described in chapter 5, starting at step 4.
It is very important to unscrew the spring load first. After unscrewing the sprin g load
you can detach the reference electrode.
In contrast to the initial start-up of the dilatometer, also the shut-off valve must be
dismantled after testing (see both pictures below).
Unscrew the socket screw.
Then remove the shut-off valve.
Clean all wetted parts right after disassembly. Ultrasonic cleaning with water and/or
detergent wash is recommended. Valves and tubing may clog if not properly purged
with water or other solvent. After cleaning, dry all parts in vacuum at 80°C overnight.
For further tests start at step 15, chapter 6 again.
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13 Care Instructions
Maintain the O-Rings regularly with silicone grease. We recommend to use new O-Rings
for each measurement in order to achieve best results.
Take some silicone grease on a sponge or
towel.
Clean the seals with the silicone grease.
Clean the O-Rings with the silicone grease.
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14 Consumables
Cell Body:

T-Frit 10/12.5 ECC1-00-0041-B

Membrane (aprotic) 1.4404 ECC1-00-0019-D

O-Ring 33.05 x 1.78 mm DIC9005

O-Ring 2 x 1.5 mm DIC9025

O-Ring 50.5 x 1.78 mm DIC9026

O-Ring 9.75 x 1.78 mm DIC9006

Accessories kit ECD-3 ECD-3-00-0400-A
Sensor Unit:

Socket screw DIN-912 M4 x 12
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15 Technical Support
Technical support for this product is exclusively provided by EL-CELL GmbH.
EL-CELL GmbH
Tempowerkring 8
21079 Hamburg - Germany
phone: +49 (0)40 790 12 733
fax:
+49 (0)40 790 12 736
e-mail: [email protected]
web: www.el-cell.com
16 Warranty
For a period of one year from the date of shipment, EL -CELL GmbH (hereinafter Seller)
warrants the goods to be free from defect in material and workmanship to the original
purchaser. During the warranty period, Seller agrees to repair or replace defective
and/or nonconforming goods or parts without charge for mate rial or labor, or, at the
Seller’s option, demand return of the goods and tender repayment of the price. Buyer’s
exclusive remedy is repair or replacement of defective and nonconforming goods, or, at
Seller’s option, the repayment of the price.
Seller excludes and disclaims any liability for lost profits, personal injury, interruption of
service, or for consequential incidental or special damages arising out of, resulting
from, or relating in any manner to these goods.
This Limited Warranty does not cover defects, damage, or nonconformity resulting from
abuse, misuse, neglect, lack of reasonable care, modification, or the attachment of
improper devices to the goods. This Limited Warranty does not cover expendable items.
This warranty is void when repairs are performed by a non-authorized person or service
center. At Seller’s option, repairs or replacements will be made on site or at the factory.
If repairs or replacements are to be made at the factory, Buyer shall return the goods
prepaid and bear all the risks of loss until delivered to the factory. If Seller returns the
goods, they will be delivered prepaid and Seller will bear all risks of loss until delivery
to Buyer. Buyer and Seller agree that this Limited Warranty shall be governed by and
construed in accordance with the laws of Germany.
The warranties contained in this agreement are in lieu of all other warranties expressed
or implied, including the warranties of merchantability and fitness for a particular
purpose.
This Limited Warranty supersedes all prior proposals or representations oral or written
and constitutes the entire understanding regarding the warranties made by Seller to
Buyer. This Limited Warranty may not be expanded or modified except in writi ng signed
by the parties hereto.
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Components Sensor Unit
There are no further spare parts available for the
sensor unit. For repair, please contact EL-CELL.
Socket screw
DIN-912 M4x12
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Components Cell Body
Socket screw
DIN-912 M4x10
Cover flange
ECC1-00-0016-B
Membrane (aprotic)
ECC1-00-0019-D
O-Ring 33.05 x 1.78 mm
DIC9005
Frit flange
ECC1-00-0213-A
Spacer disc
ECC1-00-0018-x
T-Frit 10/12.5
ECC1-00-0041-B
O-Ring 2 x 1.5 mm
DIC9025
Shut-off valve (assembled)
ECC1-00-0155-B
WE
CE
Socket screw
DIN-912 M2.5x10
ECD-3 base body
ECC1-00-0212-A
O-Ring 50.5 x 1.78 mm
DIC9026
Reference electrode
long (assembled)
ECC1-00-0009-D
O-Ring 33.05 x 1.78 mm
DIC9005
Dead volume cover
ECC1-00-0211-A
Socket screw
DIN-912 M4x10
O-Ring 9.75 x 1.78 mm
DIC9006
Piston
ECC1-00-0126-B
Spring load (assembled)
ECD3-00-0008-A
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Connector and Cable Pin-out
Sensor Cable (5 x 1 x 0.14 mm2, shielded):
ECE1-00-0036-A
One end of the cable is terminated by a SUB-D F15 connector (to box); the other end is
terminated by a round Binder series 712 connector (to LVDT sensor). The cable shield is
tied to both connector housings.
Sub-D F15 Pin #
Series 712 Pin #
Signal
Cable Color
1
1
Secondary +
White
2
2
Secondary -
Brown
3
5
Secondary Mid
Grey
4
-
-
-
5
4
Primary -
Blue
6
3
Primary +
Black
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Cell Cable (4 x 2 x 0.25 mm2, TP, shielded):
ECE1-00-0033-E
One end of the cable is terminated by a Sub -D HD M15 connector (to box); the other
end is terminated by 2 mm banana connectors. A Pt100 sensor is located beneath the
black shrink tube at the end of the cable pointing to the dilatometer.The cable shield is
tied to the Sub-D connector housing.
Pin #
Signal
Cable Color
Color of 2 mm connector
1
V1
Red
Red
2
V2
Blue
Blue
3
-
-
-
4
REF
Grey
Grey
5
I2
Yellow
Yellow
6
-
-
-
7
-
-
-
8
-
-
-
9
-
-
-
10
I2
Green
Green
11
Pt100(1)
Brown
-
12
Pt100(2)
White
-
13
-
-
-
14
-
-
-
15
-
-
-
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Biologic Auxiliary Cable (2 x 2 x 0.14 mm2, TP, shielded):
ECE1-00-0039-B
One end of the cable is terminated by a Sub -D HD F15 connector (to the data logger
connector at the controller box); the other end is terminated by a Sub -D M9 connector
(to auxiliary input connector of the Biologic potentiostat). The cable shield is tied t o
both connector housings.
Sub-D HD F15 to box
Pin #
Sub-D M9 to Biologic AUX Input
Signal
Cable Color
Pin #
Signal
Comments
GND
Brown
7
GND
Temperature
Green
6
Analog IN 2
-10..10V; 200°C/V
Displacement
White
1
Analog IN 1
-10..+10V; ca. 50 µm/V
1
2
3
4
5
6
7
8
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User Manual ECD-3 – Release 1.0
Page 33 of 33
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