66 -- CONTROL MONITORS!!! The USDA, Agricultural Research Service, intends to enter into a sole-source contract with Cryo Associates, Rockville, Maryland. This contract is to procure 10-22 TECH-2000 "Stand Alone" System Monitors with 120 VAC input control transformer to be mounted to government-owned Minnesota Valley Engineering XLC-1830 Liquid Nitrogen Cryogenic storage vessels. These monitors provide an interface that automatically controls filling operations and continuously monitors internal temperatures and LN2 levels using a dual port level transducer with filling tube. Cryo Associates hold Patent #5275007 on control hardware and the software is covered by copyright. Posted 09/14/99 (W-SN380221).

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