PCI OAFE-2000 Instruction manual

OAFE-2000
Outdoor Airflow Measurement System
Installation, Operation
& Maintenance Manual
THE SENSEABLE SOLUTION

OAFE-2000 IO&M Manual
Paragon Controls Incorporated ii Revision Level 000
TABLE OF CONTENTS
1.INTRODUCTION ..............................................................................................................................1
1.1.Description..................................................................................................................................1
1.2.Basic Operation..........................................................................................................................1
1.3.Specifications .............................................................................................................................2
1.4.Safety .........................................................................................................................................2
1.4.1.Electrical Connections ........................................................................................................2 
1.4.2.Static Electricity ..................................................................................................................2
2.AIRFLOW MEASUREMENT STATION ............................................................................................3
2.1.Typical Installations ....................................................................................................................3
2.2.Installation Guidelines for Ducted Applications ..........................................................................4
2.3.Maintenance...............................................................................................................................4
2.4.Site Storage, Handling, and Spare Parts....................................................................................4
3.MTSE INSTALLATION .....................................................................................................................5
3.1.Product Installation Dimensions .................................................................................................5
3.2.Electrical Connections................................................................................................................6
3.2.1.Common Electrical Connections.........................................................................................7
3.3.Pneumatic Connections............................................................................................................10
4.MTSE CONFIGURATIONS ............................................................................................................11
4.1.Display Overview......................................................................................................................11
4.2.System Configurations .............................................................................................................12
4.2.1.Display Types ...................................................................................................................12
4.3.Display Features.......................................................................................................................13
4.3.1.Sensor Data Page Shortcut ..............................................................................................13
4.3.2.Keypad..............................................................................................................................14
5.MENU INFORMATION ...................................................................................................................15
5.1.Levels of Menus .......................................................................................................................15
5.2.Setup Menus ............................................................................................................................16
5.2.1.Operating Range Menu ....................................................................................................18
5.2.2.K-Factor ............................................................................................................................19
5.2.3.Analog I/O Configuration ..................................................................................................20
5.2.4.System Filters ...................................................................................................................21
5.2.5.Network Communications.................................................................................................21
5.2.6.Temperature Compensation & Altitude.............................................................................22
5.2.7.Alarm Options ...................................................................................................................23
5.2.8.Units and Precision...........................................................................................................25
5.2.9.ΔP Settings (Optional) ......................................................................................................26
5.3.Diagnostics Menu.....................................................................................................................27
5.3.1.Sensor Data Page ............................................................................................................28
5.3.2.System Overview..............................................................................................................29
5.3.3.Factory Defaults................................................................................................................30
5.3.4.Software Update ...............................................................................................................31
5.3.5.ScreenSaver .....................................................................................................................32
5.3.6.AutoZero Settings .............................................................................................................32
5.4.K-Factor Page Shortcut............................................................................................................33
5.5.Notification Page ......................................................................................................................33
5.6.Troubleshooting and Help Pages .............................................................................................35
ATTACHMENTS
A BACnet PROTOCOL IMPLEMENTATION CONFORMANCE STATEMENT
B MODBUS SOFTWARE CONFIGURATION PARAMETERS

OAFE-2000 IO&M Manual
Paragon Controls Incorporated 1 Revision Level 000
1. INTRODUCTION
1.1. Description
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 (Multi-Trans Smart Ecosystem) 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.
1.2. Basic Operation
The airflow measuring station produces pneumatic output signals referred to as total (high) and static
(low) pressure. These two pressure signals are piped to the MTSE where the static pressure is
subtracted from the total and the result indicated as velocity pressure (differential pressure). This
measured differential pressure is equal to the average velocity of the air stream moving through the
plane that the airflow measuring station is located in. This signal can be converted to air velocity and
flow using the following equations:
a
a
T
 460
921.29
325.1

a
V
P
V

7.1096AVQ 
Where:
a

 Actual density of air, in lb/ft
3
(0.075 lb/ft
3
at sea level and 68°F)
a
T
= Actual temperature, in °F (default value is 68°F)
P
V
= Velocity pressure, in inches H
2
O
V = Velocity, in fpm
Q = Flow, in cfm
A = Area, in ft
2

OAFE-2000 IO&M Manual
Paragon Controls Incorporated 2 Revision Level 000
This signal is scaled and linearized before being displayed and transmitted out as a 4-20mA or 0-
10VDC signal.
The AutoZero option detects and corrects any zero offset caused by large ambient temperature
changes. The Temperature Compensation option compensates the flow and velocity signal for density
changes caused by variations in the process air temperature.
1.3. Specifications
Power Requirements 20 - 28VAC/VDC Supported Protocols BACnet MS/TP
Modbus RTU Slave
Power Consumption 8.5W, 15.3VA Max Max communication length 4000 ft. (EIA-485)
Protection Circuit Polarity Protected
Self-Resetting Fuse
Operating Temperature -20°F to 158°F
(-29°C to 70°C)
Digital Outputs (2) Open Collector Digital
Outputs
Temperature Compensated Range -4°F to 158°F
(-20°C to70°C)
Digital Inputs (2) Dry Contact Digital Inputs Storage Temperature -40°F to 257°F
(-40°C to 125°C)
Analog Outputs (4) 16-bit Analog Outputs
Field Selectable 0-10V & 4-20mA
Overvoltage and Overcurrent Protected
Enclosure Impact Resistant Polycarbonate
IP-66, NEMA 4X Rated
Fire Retardant UL 94 V-0
Analog Inputs (4) 12-bit Analog Inputs
Field Selectable 0-5V, 0-10V & 4-20mA
Dimensions 9.50" L x 5.69" W x 3.56" H
Terminal Blocks Pluggable Screw Type
16 to 24 AWG
Pressure Connections 1/4" OD Barbed
Brass Fittings
Accuracy +/- 0.25% F.S.
1.4. Safety
1.4.1. Electrical Connections
Before any electrical connections are made, ensure the POWER SWITCH is in the OFF position.
1.4.2. Static Electricity
The circuit board contains components which are susceptible to damage caused by static electrical
discharge. Should it be necessary to remove the circuit board from the enclosure, appropriate
precautions must first be taken to ensure that the operator and the circuit board are at the same
electrical potential.

OAFE-2000 IO&M Manual
Paragon Controls Incorporated 3 Revision Level 000
2. AIRFLOW MEASUREMENT STATION
2.1. Typical Installations
ROOFTOP AHU WITH RAIN HOOD
EXTERIOR MOUNTED AIRFLOW STATION
ROOFTOP AHU WITH RAIN HOOD
INTERIOR MOUNTED AIRFLOW STATION
OA INTAKE PLENUM
(BY OTHERS)
OA CONTROL
DAMPER
(BY OTHERS)
AIRFLOW
STATION
F
L
O
W
RAIN HOOD
(BY OTHERS)
OA INTAKE PLENUM
(BY OTHERS)
OA CONTROL
DAMPER
(BY OTHERS)
AIRFLOW
STATION
F
L
O
W
RAIN HOOD
(BY OTHERS)
OUTDOOR AIR PLENUM MOUNTED AIRFLOW
STATION
OUTDOOR AIR PLENUM MOUNTED AIRFLOW
STATION
LOUVER
(BY OTHERS)
OA INTAKE PLENUM
(BY OTHERS)
OA CONTROL
DAMPER
(BY OTHERS)
F
L
O
W
AIRFLOW
STATION
LOUVER
(BY OTHERS)
OA INTAKE PLENUM
(BY OTHERS)
OA CONTROL
DAMPER
(BY OTHERS)
AIRFLOW
STATION
F
L
O
W
PLENUM MOUNTED MINIMUM OUTDOOR
AIRFLOW STATION DUCTED OUTDOOR AIRFLOW STATION
OA INTAKE PLENUM
(BY OTHERS)
DAMPER
ECONOMIZER
(BY OTHERS)
OA CONTROL
DAMPER
(BY OTHERS)
LOUVER
(BY OTHERS)
F
L
O
W
AIRFLOW
STATION
OA INTAKE PLENUM
(BY OTHERS)
OA CONTROL
DAMPER
(BY OTHERS)
AIRFLOW
STATION
FLOW

OAFE-2000 IO&M Manual
Paragon Controls Incorporated 4 Revision Level 000
2.2. Installation Guidelines for Ducted Applications
The station may be installed in any duct configuration. However, the accuracy of the installation is
dependent on the flow conditions in the duct. The minimum installation requirements based upon a
uniform velocity profile approaching the duct disturbance for flow rates less than 2,500 fpm are shown
below. These are not ideal locations. It is always best to locate the station as far as possible from all
duct disturbances, with upstream disturbances being the most critical consideration.
OPPOSED BLADE DAMPERS
2D
ELBOWS
3D
FLOW
D
FLOW
2D
FLOW
D/4
FLOW
D/6
FLOW
FLOW
15° MAX
TRANSITIONS
D/6
2D
4D
FLOW
D/2
FLOW
DUCT TAKE-OFFS
FLOW
D
Notes:
Rectangular Ducts:
D =

HW4
H = Duct height W = Duct width
2.3. Maintenance
Since the sensing elements have no moving parts, only periodic cleaning may be required. The
sensing elements should be inspected for fouling of the sensing holes as part of an annual preventative
maintenance program. Installations having viscous airborne particles may require more frequent
inspection. If the sensing holes on the elements have become fouled or plugged, the following
procedure is recommended. Caution, all instruments must be isolated (removed) from the
sensing lines prior to performing the following cleaning procedure.
- Backpurging: Connect clean/dry compressed air, set at a maximum pressure of 25 psi, to
the output pressure ports (total and/or static) of the sensing element being cleaned. While
purging the sensing element, wipe the surface of the cylinder with a cloth or brush to loosen
and remove all contaminant buildup.
- Cleaning: In applications where the sensing elements are subject to viscous contaminants
it is recommended that the surface be washed with a cleaning agent. The cleaning agent
used must be suitable for use on the type of material the sensing element is constructed of
(i.e. aluminum, stainless steel, etc.)
2.4. Site Storage, Handling, and Spare Parts
The sensing elements must be stored indoors, in the original shipping package, and in a dry place.
Failure to do so may result in internal blockage of averaging chambers due to dust migration and/or
insect infestation. Although the sensing elements are not fragile by design, care must be taken not to
damage or disfigure the cylinder surface when handling and installing. Particular attention must be
given to the surface areas in which sensing ports are located. The sensing elements come as a
complete fabricated assembly. No spare parts are required.

OAFE-2000 IO&M Manual
Paragon Controls Incorporated 5 Revision Level 000
3. MTSE INSTALLATION
The MTSE is rated for either indoor or outdoor installation. It can be mounted near the
supply/return/exhaust fans reducing the pneumatic tubing runs. Since the MTSE comes standard in a
NEMA 4X Enclosure it can also be mounted in the OA intake where it may be exposed to rain/snow or
near cooling coils, providing flexibility in the mounting location. Avoid locations that are subject to high
vibration. When installed outdoors, do not install the MTSE where the display screen is in direct
sunlight.
3.1. Product Installation Dimensions
Figure 3.1 – MTSE Enclosure

OAFE-2000 IO&M Manual
Paragon Controls Incorporated 6 Revision Level 000
3.2. Electrical Connections
Figure 3.2 – Terminal Block Description
J1 – Power In The MTSE can be powered with 24VAC or 24VDC. Allowable range is 20-
28V. Pin 1 on the power supply terminal is the positive leg, however the
device is reverse polarity protected.
J2 – Future Sensor
Module Expansion
Additional remote MTSE units will be daisy-chained together to expand the
sensing capability. Currently not available.
J3 - Service
Communication
Communication pins for Factory programming. DO NOT CONNECT TO
THESE PINS.
J4 - Network
Communication
BACnet/Modbus communication pins.
J5 - Digital Inputs and
Digital Outputs
Not Used
J6 - Future Sensor
Module Expansion
Will provide power for additional MTSE sensor module units. Currently not
available.
J7 - 24VDC Output to
Temp. Transmitters
Supplies power for external temperature transmitter(s).
J8 - Analog Inputs Analog Inputs are tied to the temperature inputs and are scaled to the
minimum and maximum values set in Temperature Compensation & Altitude
Setup Menus.
J9 - Analog Outputs System 1 Analog Process Output is System 1 Total Summed Flow (Process
Value) of the sensors in System 1. This is scaled to the Operating Range set
in the Setup Menus where 0V or 4 mA is 0 flow and 10V or 20 mA is the
operating range.

OAFE-2000 IO&M Manual
Paragon Controls Incorporated 7 Revision Level 000
3.2.1. Common Electrical Connections
PCI recommends cable should be low capacitance, shielded 24 AWG (minimum) twisted wire for all
electrical connections. When connecting multiple MTSE units on a common communication network,
connect shielding wires together and connect only one side of the shielding wire to earth ground at the
building automation system; do not connect both ends of the shield wire to earth ground.
Figure 3.3 – Typical 1 System connection to 24VAC/DC power, 4-20mA loop-powered
temperature transmitter, analog receiving device, or network communication.

OAFE-2000 IO&M Manual
Paragon Controls Incorporated 8 Revision Level 000
Figure 3.4 – Typical 3 System connection to 24VAC/DC power, 4-20mA loop-powered
temperature transmitters, analog receiving devices, or network communication.