Aircuity, Inc.

Phoenix Controls Corporation

Measured Air Performance, LLC

Other

Honeywell International Inc.

Eric M Desrochers

Gordon P Sharp

David L Farrington

Richard E Reiter

Michael G Gardell

Martin D Flansbury

Steven J Gaul

Herbert A Winters

Jerome Dean

Jeffrey P Schwartz

Robert Labrecque

Joseph W Fortier

David J Buzzeo

David A Rielly

Maurice R Vincent

A multi-point air sampling system that can use a field reference subsystem to process sensor feedback to efficiently and reliably monitor and improve air quality within a space. The field reference subsystem can interface with multiple types of multi-point air sampling systems to ensure that sensors are operational and producing accurate measurements. Included within the field reference subsystem can be one or more permeation sources for generating test gases used to evaluate the integrity of the sensors, a processor for receiving the results of the test-gas evaluations to recurrently verify the operation level of each sensor, and a reporting system for carrying out actions in response to the recurrent verification of the sensors.

Field calibration for a multipoint air sampling system

Methods and apparatus for an exhaust demand control system for measuring one or more contaminants at one or more exhaust locations within one or a plurality of exhaust ducts or plenums served by an exhaust fan system. Example systems and methods can include sensing the one or more contaminants within the one or more exhaust duct locations using a multipoint air sampling system having one or more sensors and flow control elements, comparing contaminant concentration measurements from the one or more of said exhaust duct or plenum locations against an action level to create a fan setback signal, and ensuring sensor accuracy and reliability by implementing a sensor protective mode when the contaminant concentration measurements from the one or more exhaust locations exceeds an action level.

Exhaust demand control system and methods

Methods, systems, and apparatus are described which can safely reduce a laboratory fume hood's minimum airflow and energy consumption when it is determined that the fume hood is not in active use, based on a condition monitoring approach. The condition monitoring approach may incorporate a combination of setback criteria to reliably determine if the fume hood is or is not in use. When a determination has been made that a fume hood is not in use, energy reduction is achieved via automatic methods of hood minimum airflow setback. Fume hood minimum flow reductions are automatically disabled when it is determined that the hood is in active use.

System and methods for controlling laboratory fume hood minimum airflow

Methods and apparatus for an exhaust demand control system for measuring one or more contaminants at one or more exhaust locations within one or a plurality of exhaust ducts or plenums served by an exhaust fan system. Example systems and methods can include sensing the one or more contaminants within the one or more exhaust duct locations using a multipoint air sampling system having one or more sensors and comparing contaminant concentration measurements from the one or more of said exhaust duct or plenum locations against an action level to create a fan setback signal.

Methods and apparatus for providing an air sampling system with first and second PID sensors to discriminate ammonia measurements. In one embodiment, air samples are taken from a vivarium environment to determine ammonia levels for controlling air flow to the vivarium.

Air sampling system providing compound discrimination via comparative PID approach

Methods and apparatus for controlling an economizer in a ventilation system based upon moisture related properties of a first input air source and a second input air source to minimize energy for conditioning air in a structure.

Methods and apparatus for differential energy based airside economizer changeover

A system for monitoring air quality conditions, comprising, a multi-point air monitoring system comprising, a plurality of sensors for collecting air quality data from a plurality of at least partially enclosed areas; one or more data processing units for processing one or more air quality parameters based on the collected air quality data; and one or more communication devices for communicating the data from the sensor to the processing unit; and a signal processing controller that generates one or more blended air quality parameter signals via the multi-point air monitoring system based at least in part on one or more of the processed air quality parameters representative of data from a plurality of the sensors.

Multipoint air sampling system having common sensors to provide blended air quality parameter information for monitoring and building control

This invention details apparatus and methods for a unique integrated duct probe assembly system that enables multipoint sampling systems to cost effectively measure air parameters in partially confined locations such as ductwork, plenums, and air handlers with both remote and local sensors with a minimum of duct penetrations.

Duct probe assembly system for multipoint air sampling

An air monitoring system includes a tubing having a metallic inner layer and an outer jacket to provide optimal transport of air samples.

Tubing for transporting air samples in an air monitoring system

An air monitoring system is disclosed having an air monitoring unit with at least one sensor for measuring data of an air quality parameter and a computer for storing the air quality parameter data received from the sensor. The air monitoring unit may use an installed or a portable system, or a combination of both, for measuring the air quality parameters of interest. A remote data center may be provided, and the data may be uploaded to the data center from the unit by a communications media such as the Internet. Information or instructions may also be downloaded from the data center to the unit via the communications media for controlling or modifying the function of the unit. An expert system may be provided with the air monitoring system for controlling the unit. The information or instructions downloaded to the unit may be generated by the expert system.

Method of making comparisons of indoor air quality scores

An air monitoring system includes a tubing having an electrically conductive inner surface. In one embodiment, the liner includes carbon based materials, such as for example carbon nanotubes. In another embodiment, a conductive layer is adhered to a substrate.

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Millis, MA, United States of America

Eric M Desrochers