Controller knows how to deal with unplanned events
Article Abstract:
The i-Gmaxc controller from Intelligent Optimization Group incorporates a G2 expert-system-based shell that can decide in real-time the technologies and models to be used for process control requirements. The i-Gmaxc can run sequence control for startup and shutdown as well as switching to nonlinear control for handling transitions and discrete events. The lower level of its Multivariable Predictive Control can be reformulated internally in terms of the number of variables, dynamic models and tuning parameters at each execution cycle.
Publication Name: Chemical Engineering
Subject: Engineering and manufacturing industries
ISSN: 0009-2460
Year: 2000
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Temperature loggers accept J, K or T thermocouples
Article Abstract:
The HOBO Thermocouple dataloggers from Onset Computer Corp can measure temperature with three industry-standard thermocouples. The Type J model works with Type J thermocouples for measuring temperatures between O to 750 C. Similarly, the Type K model measures from 0 to 1,250 C while the Type T model measures from -200 to +180 C. The dataloggers feature cold- junction compensation, two measurement ranges for optimum resolution and accuracy. They also have internal temperature sensors to record ambient temperatures.
Publication Name: Chemical Engineering
Subject: Engineering and manufacturing industries
ISSN: 0009-2460
Year: 2000
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Determine vapor pressure of hydrocarbons evey five minutes
Article Abstract:
The Minivap On-Line from Petrolab allows for the direct vapor-pressure analysis of non-viscous liquids such as gasoline and crude oil. The device can perform both vapor-pressure and vapor-liquid ratio temperature measurements. Its analytical section is made up of a triple-expansion vapor-pressure measuring system, which correlates it directly to the EPA- mandated ASTM D5191 referee standard. The Minivap is explosion-proof, with an outdoor protection shelter and has an internal sample-conditioning system.
Publication Name: Chemical Engineering
Subject: Engineering and manufacturing industries
ISSN: 0009-2460
Year: 2000
User Contributions:
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