Abstract: An automatic system for calibrating gas sensors comprising a source of SPAN gas and a source of ZERO gas, and a means to control the flow of these gases to sensors. The system schedules and makes all required sensor value corrections and adjustments without human intervention. High resolution monitoring enables life extensions for the sensors, as well as higher accuracy monitoring than would be reasonably expected from low cost sensors.
Type:
Application
Filed:
August 14, 2003
Publication date:
March 25, 2004
Applicant:
REL-TEK
Inventors:
Albert E. Ketler, Bradley H. Baker, Thayananthan Narayanan, Lauren E. Sargent, Ronald C. Smathers, Ehren R. Graber
Abstract: A field monitoring and communication system for arranging circuits and components for environmental and other types of monitoring systems includes:
(a) microprocessor-based modules for communications and a variety of input/output types and combinations:
(b) remote and optionally, proximal calibration and regulator modules:
(c) a variety of sensor inputs optionally comprising intrinsically safe barriers.
Abstract: An automatic system for calibrating gas sensors comprising a source of span gas and a source of zero gas, a means to control the flow of these gases to sensors. The system makes all required sensor value corrections and adjustments without human intervention.
Type:
Application
Filed:
June 28, 2001
Publication date:
January 2, 2003
Applicant:
REL-TEK
Inventors:
Albert E. Ketler, Bradley H. Baker, Robert G. Poydence, Lauren E. Sargent, Ronald C. Smathers
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