Download Temperature and Auxiliary Voltage Options

Stretching the limits of battery / fuelcell testing
14701/14702
Temperature and Auxiliary Voltage Options
The 1470 Battery Test System and
1480 MultiStat products have been
enhanced by the addition of a
comprehensive series of options
including auxiliary voltage
measurements (both for DC and
impedance), temperature measurement
and control of external devices.
14701A Temperature and Control
Output Option
The 14701A provides eight
temperature measurement channels
which are compatible with E, J, K and
T type thermocouples. Each main
channel has one temperature
measurement channel assigned which
can be used to terminate a schedule
step, provide temperature safety limits
or simply monitor the battery temperature.
The temperature range covered is a
function of the type of thermocouple.
This allows, for example, fuel cells to
be tested at very high temperature,
beyond 1000°C, or climatic tests to be
run on cells below freezing point. In
addition, the 14701A option provides
control switches which may be used to
control external devices such as valves,
relays, heaters etc. Solid state switches
are used, (two terminal devices which
can be used in similar ways to relays).
Each switch is opto-isolated and is
independent of the others. They can be
connected to external supplies (up to
50V) as required to provide switching
signals.
External devices can be switched on
and off at each step in a schedule.
Since schedule steps can be of very
short duration this can provide fast
switching if needed.
14702A Auxiliary Voltage Inputs
Impedance of Anodes / Cathodes
The 14702A is used in conjunction
with the 14701A and provides an
additional eight differential voltage
measurement channels which can be
used to monitor voltages within the
fuel cell or battery under test. The
auxiliary voltage inputs can be
connected across anodes or cathodes
within the cell to provide high speed
DC voltage measurements of individual
electrodes, (e.g. for analysis of mobile
phone GSM pulses or for ohmic drop
experiments).
The 14702A option also provides the
unique capability of measuring the
impedance of individual electrodes in a
cell, giving information relating to
interfacial effects on the
electrodes.This option card makes use
of a built in multiplexer to provide
impedance from any main channels or
auxiliary channel in the system, (a
Solartron Frequency Response Analyzer
is needed to perform the impedance
analysis).
The maximum data acquisition rate is
10,000 samples per second on the
auxiliary voltage channels and these
are precisely synchronised to the
measurements on the associated main
channel. This allows electrode effects
to be precisely related to effects in the
whole cell.
The auxiliary electrode connections to
the cell are provided by co-axial cables
which make use of driven shield
technology to ensure widest frequency
bandwidth performance.
14701A / 14702A Options
These new options provide the
complete capability for both research
and quality test of a wide range of
batteries, fuel cells and
electrochemical cells.
14701A Specification
14702A Specification
Temperature measurement
Auxiliary Voltage Channels
Number of channels
8
Number of channels
8
(each main channel has one temperature channel assigned). Max. aux. channels per main channel 4
Max. applied voltage
Thermocouple Types
E, J, K, T
(Hi or Lo to chassis)
10V
Temperature accuracy
± 1°C (plus thermocouple errors)
Inputs
Differential voltage
Cold Junction Compensation included
DC Measurements
Min (°C) Max (°C) Resolution (°C)
Maximum data acquisition rate 10,000 samples per
Type E
-200
1000
0.0625
second per auxilliary
Type J
-210
1200
0.0625
channel
Type K
-200
1372
0.0625
Ranging
fully auto-ranging
Type T
-200
400
0.0625
Impedance
CellTest software supports the following temperature
Built in multiplexer allows impedance on any
related facilities:main or auxiliary channel in the system.
• Temperature safety limits
Frequency range
10µHz to 1MHz
Compatible with
Any Solartron Frequency
• Temperature measurements with plots vs time
Response Analyzer
and other parameters
• Temperature step termination limits
A connection cable is provided between the instrument and
the Thermocouple Interface Unit which provides the cold
junction compensation (1 metre length). Thermocouples
must be purchased separately to suit temperature range
requirements etc.
(these are NOT included with the option).
CellTest software facilities
All graphs can have overlays of main and auxiliary channels
or historic data.
DC graphs
auxiliary voltage vs. time
auxiliary voltage vs.
current etc.
Impedance graphs
auxiliary channel
impedance on Bode
or Complex Plane
Control Outputs
Connection cables
24 switch outputs are available (each main channel has 3
control outputs assigned). These switches are similar to relays. Co-axial cables with driven shields for high bandwidth
measurements. (Cable set 8 channels).
Type
Opto-isolated solid state switches option 147021A (1 metre length)
Connections
2 per switch
option 147022A (2 metre length)
Max voltage
50V
Max Current
100mA
NOTE: The 14702A option requires the 14701A
Switch settings can be automatically changed at each step
in a schedule. The switches can be used to control external
devices (relays, lamps, heaters, valves etc.).
to be also fitted.
A D-type connector is provided for customers to make up
their own connection leads.
CellTest is a trademark of Solartron Analytical
Windows is a trademark of Microsoft Corporation
ZPlot and CorrWare are trademarks of Scribner Associates Inc.
Solartron Analytical
Unit B1 Armstrong Mall Southwood Business Park
Farnborough Hampshire GU14 0NR UK
Tel: +44 (0)1252 556800 Fax: +44 (0)1252 556899
19408 Park Row Suite 320
Houston Texas 77084-4860 USA
Tel: (1) 281-398-7890 Fax: (1) 281-398-7891
E-mail: [email protected] www.solartronanalytical.com
a Roxboro Group Company
Solartron Analytical's Quality
System is approved to
BS EN ISO 9001: 1994.
FM 01709
SA.14701/2/Iss01/0901