1. Logging and Alarms Apparatus monitored through GPIB – LakeShore temperatures – Agilent power supplies – AMI liquid level monitor Apparatus monitored through input modules in cROI – Pressure transducers LakeShore 336 temp. controller LakeShore 336 temp. controller Agilent N5749A 750W DC power Agilent N5749A 750W DC power Agilent N5749A 750W DC power NI cRIO 9073 RS232-GPIB Computer Cross-over cable GPIB bus AMI 185 liquid level monitor NI9203 8ch Analog Current Input (2) Pressure transducers NI 9871 4-port RS485/RS422 serial (3) Sierra Instruments mass flow controllers RS232

2. Temperature control PID Labview controls everything through the NI cRIO 9073, which is connected to a computer via a crossover cable Temperature control: – The GPIB bus is only used for monitoring – Temperature for PID loop is read by LabView through NI9203 on cRIO connected to an analog output on the LakeShores – The power output of the Agilent power supplies is controlled by providing 0-10V to the control input of the power supply. This voltage is provided by the NI9263 analog output module on the cRIO. – The PID calculation is performed in LabView on the computer. LakeShore 336 temp. controller LakeShore 336 temp. controller Agilent N5749A 750W DC power Agilent N5749A 750W DC power Agilent N5749A 750W DC power NI cRIO 9073 NI9263 4ch ±10V analog output Computer Cross-over cable Everything is on-hand NI9203 8ch Analog Current Input

3. Gas flow control Gas flow control (direction and rate) will be controlled by LabView through cRIO modules We do not have the NI9481 relay modules (3 required) NI cRIO 9073 NI 9871 4-port RS485/RS422 serial NI 9481 4ch relay [30VDC (2 A)] (3) Sierra Instruments mass flow controllers (9) ASCO Redhat-II solenoid valves (24V) Computer