Pressure-Composition Isotherm (PCI)
Gas Reaction Controller
compounds such as and ALANTES absorb and store copious quantities of hydrogen
and release it in a controlled reversible operation. These hydrogen storage materials are
being increasingly used in fule cells, rechargeable batteries etc. The Pressure-Composition Isotherm (PCI) Measurement
System provides a convenient, reliable and reproducible way to
evaluate the gas absorption/desorption characteristics of these
materials. The unit operates with minimal attention by the operator.
An important feature of our product is the wide range of
operating pressure (0.01 to 200 atmospheres) and temperature
(-60°C to 900°C). Options include a cryostat to lower measurements to -100°C and operations with other gases
such as nitrogen. We can also supply a large sample container
as an accessory to prepare a fine powder employing hydrogen decrepitation.
Kinetic measurements and cycle life can also be determined with this equipment.
The instrument is supplied with a personal computer
(Intel/MS Windows platform) and software for
total automation of the experiments in a reliable manner. The data are shown on a
digital panel during the experiment, graphically displayed on the PC monitor and
is stored in the computer. At the end of an experiment, the stored data is processed to
provide results in a tabular and graphical format. Option exists to alter the experimental sequence during the process
The instrument has a safety provision to
ensure shut-off in case of accidental exposure to high pressures.
The standard product, the options and accessories,
can be further customized for individual customer's requirements. Our technical
staff will be happy to discuss this prior to finalization of the order.
A manual of operating instructions in (US) English
is provided along with the equipment.
Normal delivery period is 2-3 months.
The standard equipment measures 34" W X 30" H X 27" D (860x760x690 mm)
Weighs 300 lbs (135 KG). It can be shipped worldwide as air cargo.
Type of Gas:
Hydrogen, Nitrogen, Other inert gases (or their mixtures)
Temperatures to 900°C. Lower temperatures down to -100°C
and temperatures higher than 900°C are available as options.
Pressure Resolution Ranges:
0.005 to 1.5 atmospheres / 0.02 to 50 atmospheres / 0.1 to 200 atmospheres.
Accuracy and Resolution:
Absorption and desorption modes- 1 Cubic Centimeter of gas
Sample Holder Dimensions:
Standard is 2cc (~9.3 mm diameter
and 25 mm long)
Larger Sample Holder
200 cc is available as an option
Fully automated measurement of the PCI curves
Kinetic measurements during absorption and desorption
Color graphic display during the progress of an experiment
Cycle life of hydrogen storage materials
Manual operation, if necessary
Alarm and interlock for excess temperature/pressure.
The customers need to provide the following at their premises:
Vacuum pump (to provide a vacuum of the order of 0.02
the gases in cylinders with valves and regulators in compliance with the local
Power connections- 110 V, 60 Hz (or 220 V, 50 Hz ) Single phase , Maximum power:
Return to AMC
850 Poplar Street
Pittsburgh, PA 15220 USA
Tel : +1 (412) 921-9600 Fax : +1 (412) 921-1790