CA2055101A1 - System for controlling the differential pressure of a room having laboratory fume hoods - Google Patents

System for controlling the differential pressure of a room having laboratory fume hoods

Info

Publication number
CA2055101A1
CA2055101A1 CA 2055101 CA2055101A CA2055101A1 CA 2055101 A1 CA2055101 A1 CA 2055101A1 CA 2055101 CA2055101 CA 2055101 CA 2055101 A CA2055101 A CA 2055101A CA 2055101 A1 CA2055101 A1 CA 2055101A1
Authority
CA
Canada
Prior art keywords
room
pressure
controller
differential pressure
volume
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA 2055101
Other languages
French (fr)
Other versions
CA2055101C (en
Inventor
Osman Ahmed
Steven Arthur Bradley
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens Industry Inc
Original Assignee
Landis and Gyr Powers Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Landis and Gyr Powers Inc filed Critical Landis and Gyr Powers Inc
Priority to CA 2055101 priority Critical patent/CA2055101C/en
Publication of CA2055101A1 publication Critical patent/CA2055101A1/en
Application granted granted Critical
Publication of CA2055101C publication Critical patent/CA2055101C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Devices For Use In Laboratory Experiments (AREA)
  • Ventilation (AREA)

Abstract

A system whereby the pressure of a room containing one or more fume hoods, such as a laboratory, is to maintained at a predetermined level relative to the pressure of a reference space in the building, which may be the pressure in an adjacent corridor or an adjacent room or the like. The system involves a room controller which is part of the heating, ventilating and air conditioning apparatus of the building. The room controller is of the type which can receive electrical signals from each fume hood controller, which signals are proportional to the volume of air that is being exhausted through each fume hood. The volume indicating signals communicated from each of the fume hood controllers to the room controller enable the system to modulate the volume of air that is being supplied to the room and thereby maintain the differential pressure at the desired level with relatively quick response times.
CA 2055101 1991-11-07 1991-11-07 System for controlling the differential pressure of a room having laboratory fume hoods Expired - Fee Related CA2055101C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA 2055101 CA2055101C (en) 1991-11-07 1991-11-07 System for controlling the differential pressure of a room having laboratory fume hoods

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA 2055101 CA2055101C (en) 1991-11-07 1991-11-07 System for controlling the differential pressure of a room having laboratory fume hoods

Publications (2)

Publication Number Publication Date
CA2055101A1 true CA2055101A1 (en) 1993-05-08
CA2055101C CA2055101C (en) 1999-03-23

Family

ID=4148716

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2055101 Expired - Fee Related CA2055101C (en) 1991-11-07 1991-11-07 System for controlling the differential pressure of a room having laboratory fume hoods

Country Status (1)

Country Link
CA (1) CA2055101C (en)

Also Published As

Publication number Publication date
CA2055101C (en) 1999-03-23

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Legal Events

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