Ductless fume hood gas monitoring and detection system

摘要

A ductless fume hood suitable for the removal of various chemical materials including toxic and non-toxic gases, vapors, particles, dust and unpleasant odors from a fluid stream. The ductless fume hood uses electronic devices and software to enable real time monitoring of gas levels in parts per million.

主权项

1. A system for a ductless fume hood and a chemical database, said system comprising:
a ductless fume hood comprising: a hood enclosure; two or more detectors comprising a photo-ionization detector (PID) sensor and at least one of a metal oxide sensor or an acid array sensor for monitoring for the presence of at least one contaminant species in the ductless fume hood; a control panel; a processor operatively coupled to the control panel and configured to execute computer readable instructions for an operating system configured to operate the ductless fume hood; an exhaust stack; and wherein a motor operatively coupled to the ductless fume hood draws an effluent stream of contaminated air through the hood enclosure and at least one filter for egress at the exhaust stack; a chemical database accessed by the operating system, wherein the chemical database comprises a plurality of chemical species, wherein each of the plurality of chemical species is associated with one or more filters that are approved for use with each of the plurality of chemical species in the ductless fume hood, and wherein each of the plurality of chemical species is associated with at least one of the two or more detectors that are approved for use with each of the plurality of chemical species; wherein the operating system is configured to determine, in response to a user selection of at least one chemical species from the plurality of chemical species from the chemical database, the at least one filter capable of removing the at least one chemical species from the effluent stream of contaminated air and to display in the control panel the at least one filter capable of removing the at least one chemical species from the effluent stream of contaminated air; and wherein the operating system is configured to determine, in response to the user selection of the at least one chemical species, when at least one of the two or more detectors is compatible with the at least one chemical species selected and allow operation of the ductless fume hood using the at least one of the two or more detectors that is compatible, and determine when at least one of the two or more detectors is incompatible with the at least one chemical species selected and prevent operation of the at least one of the two or more detectors that is incompatible.