TSI Instruments PRESSURA 8630-PM, Руководство по эксплуатации и обслуживанию

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User Basics 1
Part One
User Basics
Reading product manuals should not be a difficult and time-consuming process. This
section provides a brief but thorough overview of the PresSura product by maximizing
information with minimal reading. These few pages explain the purpose (The Instrument),
and the operation (Useful User Information, Digital Interface Module, Alarms) of the unit.
Technical product information is available in Part Two of the manual. The manual
focuses on hospital isolation rooms, but the product information is accurate for any room
pressure application.
The Instrument
PresSura Room Pressure Controller
measures and reports “room pressure”. Proper
room pressure can control airborne contaminants that can adversely affect patients and
hospital staff. For example, tuberculosis (TB) isolation rooms need negative room
pressure (air flowing into the room), to minimize TB exposure to staff and other patients.
Conversely, surgical areas and bone marrow patient rooms need positive room pressure
(air flowing out of the room), to keep out contaminants that may adversely affect the
patient.
Room pressure, or pressure differential, is created when one space (hallway) is at a
different pressure than an adjoining space (patient room). When a pressure differential is
created between two spaces, air is forced to flow from the higher pressure space to the
lower pressure space. The direction of air flow is one component of proper room
pressure. The second component of room pressure is the speed or how fast is the air
moving between the two spaces. The PresSura controller provides both pieces of
information by measuring whether the air is flowing into or out of a room, and the speed
of the air.
Negative room pressure is present when air flows from a hallway / ante room into the
patient room. If air flows from the patient room into the hallway / ante room the room is
under positive pressure. Figure 1 gives a graphic example of positive and negative room
pressure.
Figure 1: Room Pressure