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Setra Blog

Mike Soper

Recent Posts

December 29, 2016

Can A Room Pressure Monitor Help Me Save Energy?

Monitoring and controlling room pressure in laboratory and healthcare settings can do more than just ensure directional airflow (positive or negative pressure rooms). Proper room pressure also contributes to saving energy. Overpressure or under-pressure scenarios mean that airflow, or even temperature control, are not optimal.

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December 19, 2016

Energy Savings Strategies For Operating Rooms

Operating Rooms consume a great deal of energy, considering the high airflow requirements needed, bright lighting, and significant plug load from patient care equipment. There are, however, strategies to conserve energy and still meet the stringent safety requirements of maintaining positive room pressure. Two conditions need to be met to enable OR energy savings. The first is a method to trigger occupied and unoccupied states. And the second is to act on that state change to setback both temperature and airflow.

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October 03, 2016

How do I pressurize an anteroom?

There are several techniques for managing safe and reliable pressurized rooms in healthcare and laboratory applications. When anterooms are present, such as those used for isolation rooms and pharmacies, it is not always clear how the anteroom should be pressurized in relation to the adjoining room and hallway. 

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June 20, 2016

What Is The Difference Between An Anteroom And An Ante Area?

Engineering proper HVAC systems for critical environments often involves distinct areas of room pressure control and directional airflow. An anteroom between a primary room and corridor ensures a safe airflow buffer zone between the controlled pressurized space and an unclean area. The two spaces are separated by a completely walled area with a door. However, in some applications an ante area without walls or a door can achieve the same effect.

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May 26, 2016

What Are Protective Environment Rooms?

Protective Environment (PE) rooms are hospital rooms designed to protect a high-risk immunocompromised patient from human and environmental airborne pathogens. These are positive pressure rooms intended to keep patients safe during recovery from cancer treatment or stem-cell transplant.

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May 23, 2016

What are Airborne Infection Isolation Rooms?

Airborne Infection Isolation (AII) rooms, commonly called negative pressure rooms, are single-occupancy patient care spaces designed to isolate airborne pathogens to a safe containment area. AII rooms are a specialized application of a hospital’s HVAC system, where the airflow supplied into the room is balanced with exhaust airflow to create at least -0.01” WC negative differential pressure with respect to an adjacent space, usually the hallway or an anteroom. In simple terms, this provides a gentle flow of air under a closed doorway and into the room so that no airborne particulates escape into nursing staff or public areas. Exhaust from these rooms is not recirculated in the HVAC system. Instead, exhaust air typically moves in dedicated ductwork to ventilation stacks on the rooftop, where atmospheric air provides sufficient dilution to make the resulting air safe.

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March 21, 2016

What can contaminate a cleanroom?

There is no guarantee of a perfect, contaminant free cleanroom. However by adhering to room pressure requirements, proper gowning procedures and by understanding the origins of the contaminants, users can minimize contamination risk to ensure safe testing and manufacturing environment. These are some of the things you may not have realized can compromise a cleanroom, and some possible ways to reduce the contamination of the source.

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January 07, 2016

How to Reduce Healthcare Nuisance Alarms

Hospital staffs face a barrage of beeping devices daily while caring for patients. Alarm fatigue, as it’s known, can cause staff to ignore alarms, especially if different devices have similar sounds or frequencies. Nuisance alarms are those sounds that do not represent a danger to the patient, but come from devices that cannot otherwise be configured to stop the alarm from sounding when a situation is neither important nor urgent.

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December 17, 2015

Onboard vs. External Differential Pressure Sensors

Pressure Sensor Installation: In the Wall or In the Ceiling?

The landscape of room pressure monitors is diverse, with many different options of product design from various manufacturers. One of the basic choices in product design is whether to include the differential pressure transducer on-board with the touch screen, or external in the ceiling or interstitial space. There are pros and cons for each approach, depending mostly on the preference of the A&E firm or customer.

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December 07, 2015

How Much Sensor Accuracy Do I Need?

A frequent question asked about room pressure monitoring applications is “how much sensor accuracy do I need?” The most common thought is to order the most accurate sensor available. For a moment, consider all things are equal with regard to price. Is the best accuracy the best choice? Not always. It depends on the application.

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