Commander, U.S. Army Engineer Waterways Experiment Station, Corps of Engineers, 3909 Halls Ferry Road, Vicksburg, MS 39180

66 -- AUTOMATED PRESSURE CONTROL SYSTEM SOL DACW39-97-Q-0016 DUE 122396 POC Mallorie O. Irwin, Purchasing Agent, (601)634-4116 WEB: Contracting Division Homepage, http://www.wes.army.mil/contract.htm. E-MAIL: Mallorie Irwin, irwin@ex1.wes.army.mil. The USAE Waterways Experiment Station (WES) proposes to award a contract to Advanced Pressure Products, Ithaca, NY under authority 10 U.S.C.2304(c)(1)for the purchase of an automated pressure control system for a visco-elastic concrete properties laboratory. The system must be commercially available. The automated pressure control system must be capable of controlling and independently pressurizing or depressurizing 12 different experimental stations to different hydraulic pressures or pressure ramps for separate creep/relaxation conditions from two independent controllers. The system shall be capable of operating with either or both controllers under a Windows NT-based data acquisition and control program capable of running on pentium or pentium pro personal computers (PC). Each station must include a motorized, piston-driven pressure generator for precise control of pressure with 12-bit control over motor speed and pressurization rate, two automated on-off motorized high-pressure valves, and a high-pressure transducer. The controllers must provide computer-driven, multiple fail-safe mechanisms against overpressure with automatic fluid refilling and automatic priming for each pressure generator with full manual-override control. The controllers must be capable of interfacing with the PC through an RS-232 port. Data must be capable of being collected in a variety of user-selected formats for transfer to other computers. The maximum pressure for each generator is 5000 psi with a system resolution of +/- psi. The controller software must operate under Windows NT 4.0 and provide multiple-slope pressure ramps and long-term constant pressure meeting resolution specifications for constant-stress creep experimentation. Automatic pressurization functions must be capable of being modified while an experiment is underway. The software must also provide control for stress relaxation experimentation. The PCs shall be provided separately and are not included in this contract. Required delivery time is 12 weeks after receipt of notice of award. In the event no other sources are found, the U.S. Government intends to award a contract to Advanced Pressure Products. Solicitation documents are not available. Any inquiries should be received within 15 days from the date of publication of this notice. (0341)

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