Healthcare Solutions Room Pressure Monitors and Controls

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1 Healthcare Solutions Room Pressure Monitors and Controls

2 TOUCHSCREEN ROOM PRESSURE MONITOR The Touchscreen Room Pressure Monitor (PMT) provides precise room pressure monitoring for critical spaces such as isolation rooms, operating rooms, and compounding pharmacies. The PMT meets both the ASHRAE 170 Healthcare Ventilation Standard and the USP 800 and USP 797 Hazardous Drugs - Handling in Healthcare Settings requirements. Using an innovative contamination resistant pressure sensor, the PMT can accurately measure room pressure without risk of sensor or measurement degradation over time. The PMT utilizes BACnet MS/TP communication to seamlessly connect into your building management system. The PMT is BTL certified, providing simple yet dependable network integration. The PMT measures the differential room pressure through the low-profile room pressure sensor (RPS) assembly. The PMT s sleek, modern design and intuitive menu system ensures ease of set-up and use. SENSOR TECHNOLOGY Comparison of Price sensor to diaphragm sensor technology. Comparison of published accuracies. Room Pressure Reading Time (Years) Comparison of Price sensor to thermal anemometer sensor technology. Effects of a lint and dust saturated environment. Pressure Reading Time (Days) Price Sensor Error Range Reference Pressure Diaphragm Sensor Error Range Price Sensor Reference Sensor Thermal Anemometer Sensor PMT FEATURES Maintenance free pressure sensor (RPS) BACnet MS/TP High resolution 480x800 Audible and visual alarms Status Indication LED s that offer 180 degree viewing of current room status Multi-level password protected menus Setup Wizard walk through setup of PMT when first powered up Fire retardant, antimicrobial ABS case PMT OPTIONS Door Switches can be combined with the PMT to prevent nuisance alarms meeting the ASHRAE 170 requirement. Room Mode Key Switch enables rooms to be easily changed from isolation to setback mode in VAV systems Analog pressure output Alarm relay contact RPS FEATURES Maintenance free Simple connections using plug and play RJ-23 connection Stainless steel louvered wall plate Embedded LED indicates proper connection PMT RPS TOUCHSCREEN MULTI-VARIABLE MONITOR The Price Multi-Variable Monitor (MVM) is a touchscreen interface that displays critical information of each room. The MVM can be used as a remote station to monitor multiple rooms or used as a room interface for a single space. The device supports both BACnet MS/TP and BACnet IP to connect with the room level devices. The monitor can display any BACnet point including alarm status, room temperature and humidity, room pressure, air change rate per hour, and occupancy. MVM FEATURES 7 in. 800x480px high resolution BACnet MS/TP connection View up to 8 rooms on main screen Password protected menus Audible and visual alarms MVM EIGHT ROOM VIEW MVM OPERATING ROOM VIEW 1-Healthcare Solutions Healthcare Solutions-2

3 ISOLATION ROOM SOLUTIONS A dynamic offset room pressure control strategy is created by utilizing volumetric tracking control, with the added feature of adjusting the airflow offset based on actual room pressure as measured with the through-wall sensor. This ensures the desired pressure differential is maintained throughout the life of the room. GENERAL REQUIREMENTS ASHRAE 170 Section Minimum differential pressure of 0.01 in.w.c. (2.5 Pa). Room Pressure Controller BACnet MS/TP (BTL Listed) Controls differential pressure of the space (up to two spaces) Control of up to 4 valves or terminals Temperature and humidity control Integrated Reheat Coil Factory mounted transition Coil access door Thermostat LCD or blank face options Full setup and balancing functions Humidity sensing option Exhaust Venturi FX Unique airflow measurement prevents dust/lint contamination from degrading airflow reading Low pressure operation ( in.w.c.) Permanently installed device(s) to continuously monitor the differential pressure. Visual indication when differential pressure is not maintained. Switch of pressure relationships between spaces from positive to negative, and vice versa, shall not be permitted. Minimum of 12 air changes per hour. Air changes can be reduced when the space is unoccupied, provided that the required pressure relationship is maintained. ROOM TYPES Airborne Infectious Isolation (AII) rooms shall be at a negative pressure with respect to the corridor or common space. Protective Environment (PE) rooms shall be at a positive pressure with respect to the corridor or common space. Supply Venturi FX Low pressure operation ( in.w.c.) Closed-loop airflow control and measurement Combination Airborne Infectious Isolation/Protective Environment (AII/PE) rooms shall maintain one of the following pressure relationships: 1. The anteroom shall be at a positive pressure with respect to both the AII/PE room and the corridor or common space. 2. The anteroom shall be at a negative pressure with respect to both the AII/PE room and the corridor or common space. Room Pressure Sensor Maintenance and calibration-free sensor technology Accurate to 3% of reading Designed to prevent buildup of airborne particulates Touchscreen Room Pressure Monitor Elegantly designed with the industry s highest resolution Innovative 180 LED room status indicator BTL certified for reliable BACnet integration 3-Healthcare Solutions Healthcare Solutions-4

4 OPERATING ROOM SOLUTIONS Volumetric offset room pressure control is one of the most common and dependable approaches to controlling room pressure in operating rooms. Tracking pair VAV control is designed to maintain an offset between supply and exhaust valves to facilitate directional airflow control between adjacent spaces. Tracking Controller BACnet MS/TP (BTL Listed) Maintains offset during occupied and unoccupied periods Discharge air temperature control for spaces with high air change rates Integrated Reheat Coil Factory mounted transition Coil access door Exhaust Venturi FX Unique airflow measurement prevents dust/lint contamination from degrading airflow reading Low pressure operation ( in.w.c.) GENERAL REQUIREMENTS ASHRAE 170 Section 7.4 Room to maintain positive pressure with respect to all adjoining spaces at all times. Minimum differential pressure of 0.01 in.w.c. (2.5 Pa). Minimum of 20 air changes per hour. Air changes can be reduced when the space is unoccupied, provided that the required pressure relationship is maintained. If pressure-monitoring device alarms are installed, allowances shall be made to prevent nuisance alarms while doors are moving or temporarily open. Supply Venturi FX Low pressure operation ( in.w.c.) Closed-loop airflow control and measurement Multi-Variable Monitor 7 in. 800x480px high resolution BACnet MS/TP or IP connection Central location for critical room information Thermostat LCD or blank-face options Full setup and balancing functions Humidity sensing option Price OR Diffuser System Laminar array or HORD air curtain Integrated self-balancing plenum Ultrasuite system with integrated high-efficiency LED lighting Visit for more information Room Pressure Sensor Maintenance and calibration-free sensor technology Accurate to 3% of reading Designed to prevent buildup of airborne particulates Touchscreen Room Pressure Monitor Elegantly designed with the industry s highest resolution Innovative 180 LED room status indicator BTL certified for reliable BACnet integration 5-Healthcare Solutions Healthcare Solutions-6

5 COMPOUNDING PHARMACY SOLUTIONS Hazardous Drugs (HD) must be handled under conditions that promote worker safety and environmental protection. Volumetric offset is typically used to maintain room pressurization. Compounding pharmacies are constant volume spaces, operating at high air change rates 24/7. Exhaust airflow requirements can often be met with BSC exhaust in buffer isolation rooms, requiring a constant volume supply valve to provide offset control. Room Pressure Controller BACnet MS/TP (BTL Listed) Controls differential pressure of the space (up to two spaces) Control of up to 4 valves or terminals Temperature and humidity controls Constant Volume Venturi Valve Medium ( in. w.c.) or low ( in. w.c.) pressure operation Characterized and calibrated using NVLAP accredited test Analog operating pressure feedback Optional corrosion resistant coatings Exhaust Venturi Valves Electronic airflow feedback prevents dust/lint contamination from degrading airflow reading Medium ( in. w.c.) or low ( in. w.c.) pressure operation Characterized and calibrated using NVLAP accredited test Integrated silencer options Analog operating pressure feedback GENERAL REQUIREMENTS USP 797/800 A continuously operated biological safety cabinet (BSC) or compounding aseptic containment isolator (CACI) is used in the preparation of hazardous drugs (HDs). The drug preparation area is an isolated space kept at a negative pressure with respect to adjacent spaces. Required pressure differential: in.w.c. Required air change rate for nonsterile HD compounding: 12 ACPH. Required air change rate for sterile HD compounding: 30 ACPH. Room differential pressures to be continuously monitored and indicated. USP recommends separate rooms for sterile and nonsterile compounding. Supply Venturi Valves Medium ( in. w.c.) or low ( in. w.c.) pressure operation Characterized and calibrated using NVLAP accredited test Analog operating pressure feedback Touchscreen Room Pressure Monitor Elegantly designed with the industry s highest resolution Innovative 180 LED room status indicator BTL certified for reliable BACnet integration Integrated Reheat Coil Factory mounted transition Coil access door Room Pressure Sensor Maintenance and calibration-free sensor technology Accurate to 3% of reading Designed to prevent buildup of airborne particulate Multi-Variable Monitor 7 in. 800x480px high resolution BACnet MS/TP connection View up to 8 rooms on main screen Thermostat LCD or blank-face options Full setup and balancing functions Humidity sensing option 7-Healthcare Solutions Healthcare Solutions-8

6 APPLYING HIGH ACCURACY AIRFLOW CONTROL DEVICES SINGLE DUCT TERMINAL UNIT (SDV) Price SDV terminal units consist of an air inlet assembly, housing with an insulation liner and a discharge outlet. Leak Resistant Casing Robust Damper VENTURI FX (VFX) The Price Venturi FX (VFX) valve is a high accuracy, high turndown airflow control valve. Airflow is measured from the static pressure difference caused by the airflow velocity change through a venturi shaped body. Standard speed fail in place actuator for healthcare applications. Additional actuator options available. High accuracy low drift airflow sensor Venturi orifice airflow measurement Airflow is measured using the SP300 crossflow sensor which offers an aerodynamic profile with a minimum cross-sectional area and superior tensile strength compared to other flow sensors on the market. With no sensing elements within the airstream, the VFX is resistant to physical contaminants (dust/lint) degrading the airflow measuring performance. Multipoint Crossflow Sensor The integral high accuracy airflow transducer is not susceptible to the sensor drift found in diaphragm style sensors. This ensures continued performance and accuracy over the life of the building. PRODUCT FEATURE LIST Use this table to determine which valve type best meets your requirements. VENTURI VALVE (VV) Price Venturi Valves are mechanically pressure independent control devices designed specifically for room pressurization and fume hood control applications. With mechanical airflow regulation, the venturi valve offer unsurpassed speed of response, high turndown ratio, accuracy, and excellent system stability. Valve pressure measurement with analog pressure signal output High speed fail-safe actuator Optional flange connection for easy connection to stainless steel ductwork FEATURE Minimum Operating Pressure VV Venturi Valve (VV) VFX Venturi FX SDV Single Duct Terminal Unit 0.3 in.w.c. < 0.15 in.w.c in.w.c. Turndown Ratio 14:1 10:1 6:1 Sound Level Good Better Best Airborne Particulate Insensitivity Best Better Good DETAILS The VFX and SDV have a lower minimum operating pressure than venturi valves, contributing slightly to energy and cost savings. Both venturi valves and the VFX have a higher turndown ratio, facilitating energy savings during unoccupied hours The VFX features lower sound levels compared with venturi valves. Integral silencers are available for all airflow devices to improve acoustical performance. The accuracy of airflow sensors typically found in terminal units can be negatively impacted by the buildup of airborne lint. Venturi valves control flow based on factory calibration and characterization without the use of flow sensors, leaving them unaffected by particulates in the airstream. VFX valves utilize a venturi orifice instead of the cross flow sensor to achieve insensitivity to airstream particulates. Variable rate stainless steel cone spring Optional phenolic powder coating for chemical resistance Inlet/Outlet Insensitivity Best Better Good Speed of Response Best Good Good The VFX requires one duct diameter of straight duct leading into and out of the valve. Venturi valve performance is virtually unaffected by inlet or outlet duct configurations. Best practice with the SDV calls for three duct diameters of straight leading into the terminal unit for best accuracy. Mechanical airflow regulation ensures venturi valves have the highest speed of response and can achieve a one second speed of response for a fume hood system. VFX and SDVs utilize airflow measurement and feedback, slightly limiting the speed of response. System Stability Best Good Good Venturi Valves, with their mechanical airflow regulation, offer the best system stability without any PID loop adjustment. 9-Healthcare Solutions Healthcare Solutions-10

7 Product Improvement is a continuing endeavour at Price. Therefore, specifications are subject to change without notice. Consult your Price Sales Representative for current specifications or more detailed information. Not all products may be available in all geographic areas. All goods described in this document are warranted as described in the Limited Warranty shown at priceindustries.com. The complete Price product catalog can be viewed online at priceindustries.com. Price is a registered trademark of Price Industries Limited Printed in Canada. v300

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