The OAFE-2000 is a packaged and specifiable outdoor airflow measuring system capable of producing an overall ±0.5% of reading accuracy and will satisfy LEED, ASHRAE 62.1, ASHRAE 189.1, ASHRAE 170 and California Title 24 requirements for verifying the required ventilation rates or air changes per hour.
The OAFE-2000 is designed to tackle the challenges of outside airflow measurement which is often low velocity, loaded with particulate, and application specific. The packaged system consists of an integral transmitter and multiple airflow elements, factory mounted and pre-piped in a casing designed for flanged connection to ductwork, control dampers, louvers, etc. The airflow measurement station is constructed to comply with ASHRAE Standard 111 for equal area traversing of an airflow measurement plane.
Utilizing Paragon Controls’ full sheet metal capabilities, the OAFE-2000 can match up with almost any new or existing ductwork, hood, or outside air opening for a seamless engineered solution. An optional inlet bell is available for plenum applications. Application specific materials such as 316 Stainless Steel are available where salt-air may be a concern.
The integral MTSE Transmitter is a flow and pressure transmitter that has been engineered to provide a cost effective solution for accurate airflow measurement of up to three systems; perfect for air handling or rooftop units requiring ventilation rate monitoring at the outside air intake and supply and return fan/fan array airflow monitoring. The MTSE can connect to each fan’s existing piezometer ring airflow sensors or to field installed airflow stations; up to five flow sensing points. The MTSE can simultaneously measure up to four additional differential pressure sensing points such as pressure drop across filters or coils, duct static pressure, and plenum pressure. The total (summed) airflow rate for the individual flow systems differential pressure points is indicated on a 3.5-inch HMI touch screen.
The total airflow rate of each system is available to the BMS or local controller via dedicated field selectable 0-10 VDC or 4-20 mA analog outputs and via field selectable BACnet®-MS/TP Master or Modbus® RTU Slave network communications. Independent flow and pressure values for each of the nine sensing points is also available to the BMS or local controller via network communication.
|Outdoor Airflow Measurement System|
|Accuracy||±0.5% of Reading|
|Operating Velocity Range||100 to 10,000 FPM|
6063-T5 Anodized Aluminum (standard)
16 ga G90 Galvanized Steel (standard)
|Corrosion Resistance||Corrosive resistant and high temperature materials are available. Consult factory for further information.|
350°F (in air)
400°F (in air)
0 to 100%
|Power Supply||20-28 VAC/DC|
|Enclosure||IP-66, NEMA4X Rated
Fire Retardant Impact Resistant Polycarbonate
Modbus® RTU Slave
|Analog Inputs||(4) 12-bit
Field Selectable 0-5V, 0-10V, & 4-20mA
|Analog Outputs||(4) 16-bit
Field Selectable 0-10V & 4-20mA
Overvoltage & Overcurrent Protected
|Digital Inputs||(2) Dry Contact|
|Digital Outputs||(2) Open Collector|
|Temperature Limits||Operating: -4°F to 158°F (-20°C to 70°C)
Storage: -40°F to 257°F (-40°C to 125°C)