Fuel-cell testing

---

More 1 2 3 4

Fuel-cell Parameters to be Monitored and Controlled
Item	Channel type	Signal conditioning
Voltage	Analog input	Isolation, attenuation
Current	Analog input	Scaling attenuation
Pressure	Analog input	Scaling
Humidity	Analog input	Scaling
Flow rate	Counter input	Scaling
Temperature	Analog input	Scaling, amplification, excitation
Emergency shutoff	Digital output	Switching
Nitrogen purge	Digital output	Switching
Pressure valves	Analog output	Amplification
Heater and fans	GPIB or digital output	Switching (with digital output)
Load	GPIB or digital output	Switching (with digital output)

Fuel-cell Testing Hardware Components
Item	Description
PC/PXI controller	Performs the test execution and data storage
PC/PXI chassis	Houses controller and I/O components
Multifunction I/O	Performs the analog to digital conversion and controls the conditioning
Relays	Routes power output
Analog output	Controls pressure valves
Isolated/amplified analog input	Monitors voltage and current
Isolated thermocouple input	Monitors temperature from thermocouples
Isolated digital output	Controls shutoff, bypass, and purge valves
Programmable load	Absorbs power output of fuel cell
Mass flow controller	Controls gas flow
Fixturing/piping	Routes gases into and out of fuel cell

Magazine | eMedia | Advertising Info | Contact Us

©2009 SAE International. All rights reserved.