A differential room pressure sensor monitoring system is for monitoring the pressure of a positive pressure room or negative pressure room. Also, it gives an alert in case the pressure difference is not adequate. The main applications are isolation rooms (AIIR) of hospitals, Sterile rooms (CSSD), clean rooms etc.
In all such cases, we need room pressure monitoring systems for continuously checking the pressure. This can be absolute pressure monitoring or relative pressure monitoring.
For absolute pressure monitoring, the customer needs to maintain a particular pressure value. In certain other applications, we need a relative pressure difference. Relative pressure will be either positive pressure or negative pressure. This is in relation to the pressure immediately outside this room.
Room pressure monitoring systems for Airborne infection isolation room (AIIR)
In all pressure monitoring systems, the system has to measure the pressure of the air. For this purpose, there will be a small opening in the unit, which is open to the air. There will be a membrane as part of the pressure sensor, which measures the air pressure. For measuring the absolute pressure, we need only one such pressure-sensing diaphragm. But, for negative or pressure monitoring, we need a system with two sensors. We measure the negative or positive pressure in comparison to the pressure outside the room. Hence, the system needs to measure the pressure inside the room as well as outside the room.
Functions of Room pressure monitoring system Model VAC-CPS-6000
The following are the main functions of this model:
- It checks and records the pressure difference between any two rooms. Also, it does the same between a room and the corridor inside a building.
- If the pressure difference is not enough, it generates a Phone call, SMS or siren alarm. (May need extra devices).
Applications of Room pressure monitoring and alert system Model VAC-CPS-6000
The following are the main applications of this model:
- Watch and record the air pressure difference between any two rooms. In case the pressure difference is not enough, it can generate alarms.
- Check and record the air pressure difference between a room and the corridor. In case the pressure difference is not enough, it can generate alarms.
- Track and record the air pressure of an isolation room and the corridor. This is to ensure that the isolation room is at a lower pressure at all times. In case the pressure difference is not enough, it can generate alarms.
- Watch and record the air pressure difference between a cleanroom and the corridor. This is to ensure that the cleanroom is at higher pressure at all times. In case the pressure difference is enough, it can generate alarms.
- Track and record the air pressure of an operation theatre room and the corridor. This is to ensure that the operation theatre is at a higher pressure at all times. In case the pressure difference is not enough, it can generate alarms.
- Watch and record the air pressure of a central sterile services department (CSSD) and the corridor. This is to ensure that the CSSD room is at a higher pressure at all times. In case the pressure difference is not enough, it can generate alarms.
Negative pressure monitoring sensor system
As an example, an isolation ward in a hospital will be a negative pressure room. The pressure is always lower than in the outside areas. In this case, the bacteria or virus inside the room will not go to the outside of the room. As the pressure is always lower, there will be a tendency for outside air to enter this room, but not vice versa.
Hence, the contaminated air from the patient room will not go outside this room. Our control panel will show the pressure difference between the rooms. In case the pressure difference reduces, the system will generate an alert. It is possible to connect different alert systems. These include a phone call, SMS alerts or a local siren with a flashing light.
For negative and positive pressure systems, we use the same differential pressure sensors. It is only the difference in the configuration of the pressure values. These sensors are for monitoring differences in pressure. Hence these are the differential pressure monitoring systems.
Positive pressure monitoring sensors for Central Sterile Supply Department (CSSD)
An example of a positive pressure room will be the Central Sterile Supply Department (CSSD) in a hospital. This room contains sterile items in a hospital. Contaminated air from other areas should not enter this room. Hence, this room has a higher pressure than the outside. The air inside the CSSD room may go out of the room, but not vice versa. If the air pressure inside the CSSD room becomes equal to the outside air pressure, it is an alarm condition.
Our system will immediately make a phone call, SMS, and local alarms. Eg. If the pressure in the corridor is 101 kPa, the CSSD room will be at 105 kPA. In case the pressure of the CSSD room comes down to 102 kPA, the system will generate an alert.
Differential Room Pressure recording connected to BMS
You may connect a differential room pressure monitoring system to a central computer. If you want to record only pressure it is possible. If you have many such rooms, we can centralize all the data and store it on a cloud-based server.
Also, we can connect our differential pressure sensors to automation systems. These include protocols such as Modbus and BACnet. We can also connect to your existing BMS but may need modifications to the existing systems. Our automation team will be able to assist you in this regard.
Negative and positive pressure monitoring with phone, SMS, and Siren alert
Our differential pressure monitoring system has audiovisual alerts on the control panel itself. In the case of an alert, there is a local beep and the screen will flash red. Apart from this, we can connect a SIM card-based phone call alert system.
This phone dialer system will generate calls to 4 operators and send SMS. It can deliver a custom-recorded voice message such as ‘pressure is low in CSSD room 2’. The system will call the operators one by one until anyone picks up the call. All people will receive SMS alerts.
Isolation room monitoring and alert
The same system is useful for isolation rooms in hospitals. It is mandatory to keep the negative pressure inside an isolation ward.
This means that the pressure in this room should be lower than that of outside rooms and corridors. This will prevent infected air from entering other areas.
To watch this, you can use our monitoring system. One pressure sensor will be inside the isolation room and the other will be outside the room. The system will check that the pressure inside the room is always at negative pressure. Otherwise, the system can provide alerts as programmed.
Pressure sensors for operation theatre in hospitals
Pressure sensors for Airborne infection isolation rooms (AIIR) and respiratory infection isolation rooms
Pressure sensors for CSSD rooms in hospitals
Pressure sensors for Pathology and histology laboratories
Pressure sensor for Absolute pressure
The absolute pressure means the exact reading of the pressure in kPA. Differential pressure means the difference between two pressure points. In the case of an operation room, there are two sensors. One is inside the room and the second one is outside the room. We connect both these sensors to our monitoring system.
The unit will be checking whether the operation theatre is always at a higher pressure. The exact pressure reading is generally not important in this case. But, there are applications in which you will want to know the exact reading.
As an example, if the building is at a high altitude, you will want to know the exact atmospheric pressure. If there is a gas pipe outlet, you may want to regulate the pressure. You will need an absolute pressure sensor for this purpose.
Price of Clean Room pressure monitor
Our simplest room pressure monitor starts from US$ 1,040.00 (Taxes and Duties in your country will be extra). It is very easy to install by any technician with simple instructions. We are supplying the same in programmed conditions. Hence your technician need not worry about extra programming.
Products details for pressure monitoring system for Airborne infection isolation room (AIIR)
- Brief Title of the device: Differential Pressure Monitoring and alert system for airborne infection isolation room (AIIR), CSSD rooms etc. in hospitals and Cleanrooms.
- Brief Description of the device: This differential pressure monitoring system is for negative and positive pressure rooms in hospitals. It monitors and gives an alert in case the pressure difference is proper. It is simple to install and operate.
- Model number: VAC-CPS-6000
- Brand: VackerGlobal
- Seller: VackerGlobal
- SKU Number: 1008000001
- Price (USD): 1040.00
- Price Validity: 30 June 2023
FAQ on monitoring sensors for negative pressure and positive pressure rooms
- These are suitable for isolation wards in hospitals for Covid19 patients? Yes, these are suitable for all types of isolation wards in hospitals.
- Can the system generate a phone call alert in case the room does not keep the pressure difference? Yes, we have models which can connect to an auxiliary phone device. It can generate phone calls & SMS to operators.
- Can I use it without connecting to a computer network? Yes, we have models which will work without a network connection. At later stages, you can connect with a network too.
- How does the programming of the system? You can use the touch screen. Also, we can supply it in programmed condition if you provide all the details.
- Where is the device manufactured? The monitoring system is manufactured in Sweden.
- What are the requirements for an airborne infection isolation room (AIIR)? : An AIIR should be slightly lower pressure than that out of its door. So always there will be air entering this room under the door. To keep the negative pressure, you need to continuously remove air from the room and clean using a HEPA filter (Please check the requirements of your local authorities).
- What is a negative pressure room?: For a negative pressure room, the room pressure will be slightly lower than the atmospheric pressure. eg. If the atmospheric pressure is 101.325 kilopascals (kPa), all the corridors and normal rooms of a hospital will be at this pressure.
A room with a pressure of 100.325 kilopascals is a negative pressure room. An example of a negative pressure room is an isolation room for a patient with respiratory sickness such as Covid-19.
- What is a positive pressure room?: For a positive pressure room, the room pressure will be slightly higher than the atmospheric pressure. eg. If the atmospheric pressure is 101.325 kilopascals (kPa), all the corridors and normal rooms of a hospital will be at this pressure.
A room with a pressure of 102.00 kilopascals is a positive pressure room. An example of a positive pressure room is an operation theatre.
- What is the pressure in a negative pressure room in kPA (kilo Pascals)?: Most of the international standards specify that the pressure difference in inches of Water Column (WC) between the corridor and the isolation room should be within minus 0.01 to minus 0.03 inches of WC.
This amounts to roughly minus 0.0024884 kPa to minus 0.0074652. This means that if the atmospheric pressure is 101.325 kPa, the pressure in the isolation room should be at least 101.325-0.0024884 = 101.3225116kPa.
- What is the pressure in a positive pressure room in kPa (kilo Pascals)?: Most of the international standards specify that the pressure difference in inches of Water Column (WC) between the corridor and a positive pressure room should be within plus 0.01 to plus 0.03 inch of WC.
This amounts to roughly 0.0024884 kPa to plus 0.0074652. This means that if the atmospheric pressure is 101.325 kPa, the pressure in the positive pressure room should be at least 101.325+0.0024884 = 101.3274884kPa.
- How to select a room pressure monitoring system? First of all identify your requirements: (a) Do you want a stand-alone or network-connected system? (b) Do you want to connect with your existing BMS system? (c) What are the types of alerts required – A phone call, SMS, Local beep etc. (d) Do you want to connect to a nursing station for alerts? (e) How many adjacent rooms need monitoring, so that you can select a single system which can connect as many rooms as possible? (f) Can the system add future rooms without much work?
The kPa values are given as examples only and you should follow your local regulations.
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