EB-Flow

Series 2000

EF-x2000-U

Airflow Measurement with Temperature and Alarm Capability

EF-x2000-U System

EB-Flow II

Series 2000

EF-x2000-U

Airflow Measurement with Temperature and Alarm Capability

The EF-x2000-U is a cost effective measurement solution for smaller rooftop packaged units, fan coils and classroom ventilators. Available with adjustable standoff or insertion mount universal probes. Dual airflow output capability makes it ideal for outdoor air and exhaust airflow measurement in RTUs with powered exhaust and in energy/heat recovery ventilators.

Thermal Dispersion Technology
Single or Dual Airflow Output
NIST‐traceable Calibration
%‐of‐reading Accuracy
Airflow and Status Alarm
Temperature Output Capability

Analog and RS‐485 Output Models
Two Universal Mounting Styles
Remote Transmitter with LCD Display
3‐year Warranty

EF-x2000-U Overview PDF

Overview
Specifications

Typical Applications

Smaller openings (≤ 8 sq ft [0.74 sq m]) for Outdoor Air Delivery Monitoring where 10% installed accuracy is acceptable
ERV/HRV Outdoor Air & Exhaust Air Monitoring
Classroom Unit Ventilator Outdoor Air Delivery Monitoring

Benefits

Demonstrate Proper Outdoor Air Delivery
Maintain Pressurization
Satisfy LEED Prerequisites and Credits
Provide Acceptable IAQ
Save Energy
Reduce Liability
Improve Performance

Product Highlights

Universal Mounting
Adjustable Brackets
Low Airflow Capability
Long-term Stability
Unsurpassed Quality
“Plug-and-Play” Operation
Intuitive User Interface
Waterproof Sensor Assembly
FEP Plenum Rated Cables

General

Probe and Sensor Node Configurations

1 probe x 1 sensor node

2 probes x 1 sensor node/probe

Installed Airflow Accuracy¹

≤ 8 sq.ft. [0.74 sq.m.]:±(3% to 15%), typical (increases with increasing opening size). May be improved by field adjustment using the Field Adjust Wizard (FAW) to a reliable reference.

> 8 sq.ft. [0.74 sq.m.]: Not recommended.

Sensor Node Averaging Method

Airflow: Independent (arithmetic average on 2 sensor configurations installed at a single measurement location)

Temperature: Independent (velocity weighted or arithmetic average on 2 sensor configurations installed at a single measurement location)

Listings and Compliance

UL: 60730-1, 60730-2-9; CAN E60730-1, E60730-2-9 (EF-A2000-U
Only)

FCC: This device complies with Part 15 of the FCC rules

RoHS: This device id RoHS2 compliant

Environmental Limits

Temperature:

Probes: 0 to 2,000 fpm [0 to 10.16 m/s]: -20 to 160 ⁰F [-28.9 to 71.1 ⁰F]

Probes: 0 to 3,000 fpm [0 to 15.24 m/s]: 0 to 160 ⁰F [-17.8 to 71.1 ⁰C]

Transmitter: -20 to 120 ⁰F [-28.9 to 48.9 ⁰C]

Humidity: (non-condensing)

Probes: 0 to 100%

Transmitter: 5 to 95%

Individual Sensing Nodes

Sensing Node Sensors

Self-heated sensor: Precision, hermetically sealed, bead-in-glass thermistor probe

Temperature sensor: High-performance encapsulated chip thermistor with parylene coating

Sensing Node Housing

Material: Glass-filled Polypropylene

Sensor Potting Materials: Waterproof marine epoxy

Sensing Node Internal Wiring

Type: Kynar® coated copper

Airflow Measurement

Accuracy: ±3% of reading (typical), 4% max. to NIST-traceable airflow standards (includes transmitter uncertainty)

Calibrated Range: 0 to 3,000 fpm [0 to 15.24 m/s]

Calibration Points: 7

Temperature Measurement

Accuracy: ±0.15 ⁰F [0.08 ⁰C] to NIST-traceable temperature standards (includes transmitter uncertainty)

Sensor Probe Assembly

Tube

Material: Mill finish 6063 aluminum

Mounting Brackets

Material: 304 stainless steel

Mounting Options & Overall Probe Length

Insertion: 6, 8 or 16 in. [152.4, 203.2 or 406.4 mm] (adjustable)

Stand-off: 6, 8 or 16 in. [152.4, 203.2 or 406.4 mm] (adjustable)

Probe to Transmitter Cables

Type: FEP jacket, plenum rated CMP/CL2P, UL/cUL listed, -67 to 302 ⁰F [-55 to 150 ⁰C], UV tolerant

Standard Lengths: 10, 25 and 50 ft. [3.1, 7.6 and 15.2 m]

Connecting Plug: 0.60” [15.24 mm] nominal diameter

Transmitter

Power Requirement: 24 VAC (22.8 to 26.4 under load) @8V-A

User Interface: 16-character LCD display and 4 button interface

B.A.S. Connectivity Options

EF-A2000 Transmitter: Two field selectable (0-5/1-5/0-10/2-10 VDC), scalable and protected analog output signals (AO1=airflow or airflow 1, AO2=airflow 2, temperature or alarm)

* The VDC output circuit of the EF-A2000 transmitter can drive the input circuit of devices designed to measure 4-wire current loops with a resistive load ≥250 ohms.

EF-N2000 Transmitter: One field selectable (BACnet MS/TP or Modbus RTU) and non-isolated RS-485 network connection – Individual sensor node airflow rates and temperatures are available via the network (provide individual 24 VAC transformers for each EF-N2000 transmitter for applications requiring isolated RS-485)

Relay

Type: Dry Contact w/ onboard jumper to drive a remote LED (R1=alarm)

Status: N.O. or N.C. via user setup configuration

Rating: 30 VDC or 24 VAC @ 3 amp. max.

Airflow Alarm

Type: Low and/or high user defined setpoint alarm

Tolerance: User defined % of setpoint

Delay: User defined

Zero Disable: Alarm can be disabled when the airflow rate falls below the low limit cutoff value (unoccupied periods)

Reset Method: Manual or automatic

Visual Indication: Yes, LCD display

Network Indication: Yes (EF-N2000 only)

Analog Signal Indication: Yes, on AO2 assignment (EF-A2000 only)

Contact Closure Relay: Yes, on R1 assignment

System Status Alarm

Type: Sensor diagnostic system trouble indication

Visual Indication: Yes, LCD display

Network Indication: Yes (EF-N2000 only)

Analog Signal Indication: Yes, on AO2 assignment (EF-A2000 only)

Contact Closure Relay: Yes, on R1 assignment

¹Installed airflow accuracy is the actual system accuracy expected and includes sampling uncertainty of the sensor probes when installation meets or exceeds placement guidelines.

Related Documents

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Data Sheets

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Wiring Guides

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Startup Guides

EF-A2000-U Startup Guide
Download | Print

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Startup Guides

EF-N2000-U Startup Guide
Download | Print

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Guide Specifications

Guide Specs [PDF]
Download | Print

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Guide Specifications

Guide Specs [DOC]
Download | Print

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Test Records

Saltwater and Acid Test Report
Download | Print

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Test Records

FCC Statement of Compliance
Download | Print

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Test Records

UL Certificate of Compliance
Download | Print

EB-Flow

Airflow Measurement with Temperature and Alarm Capability

EB-Flow II

Airflow Measurement with Temperature and Alarm Capability

Typical Applications

Benefits

Product Highlights

General

Probe and Sensor Node Configurations

1 probe x 1 sensor node

2 probes x 1 sensor node/probe

Installed Airflow Accuracy¹

≤ 8 sq.ft. [0.74 sq.m.]:±(3% to 15%), typical (increases with increasing opening size). May be improved by field adjustment using the Field Adjust Wizard (FAW) to a reliable reference.

> 8 sq.ft. [0.74 sq.m.]: Not recommended.

Sensor Node Averaging Method

Airflow: Independent (arithmetic average on 2 sensor configurations installed at a single measurement location)

Temperature: Independent (velocity weighted or arithmetic average on 2 sensor configurations installed at a single measurement location)

Listings and Compliance

UL: 60730-1, 60730-2-9; CAN E60730-1, E60730-2-9 (EF-A2000-U Only)

FCC: This device complies with Part 15 of the FCC rules

RoHS: This device id RoHS2 compliant

Environmental Limits

Temperature:

Probes: 0 to 2,000 fpm [0 to 10.16 m/s]: -20 to 160 ⁰F [-28.9 to 71.1 ⁰F]

Probes: 0 to 3,000 fpm [0 to 15.24 m/s]: 0 to 160 ⁰F [-17.8 to 71.1 ⁰C]

Transmitter: -20 to 120 ⁰F [-28.9 to 48.9 ⁰C]

Humidity: (non-condensing)

Probes: 0 to 100%

Transmitter: 5 to 95%

Individual Sensing Nodes

Sensing Node Sensors

Self-heated sensor: Precision, hermetically sealed, bead-in-glass thermistor probe

Temperature sensor: High-performance encapsulated chip thermistor with parylene coating

Sensing Node Housing

Material: Glass-filled Polypropylene

Sensor Potting Materials: Waterproof marine epoxy

Sensing Node Internal Wiring

Type: Kynar® coated copper

Airflow Measurement

Accuracy: ±3% of reading (typical), 4% max. to NIST-traceable airflow standards (includes transmitter uncertainty)

Calibrated Range: 0 to 3,000 fpm [0 to 15.24 m/s]

Calibration Points: 7

Temperature Measurement

Accuracy: ±0.15 ⁰F [0.08 ⁰C] to NIST-traceable temperature standards (includes transmitter uncertainty)

Sensor Probe Assembly

Tube

Material: Mill finish 6063 aluminum

Mounting Brackets

Material: 304 stainless steel

Mounting Options & Overall Probe Length

Probe to Transmitter Cables

Type: FEP jacket, plenum rated CMP/CL2P, UL/cUL listed, -67 to 302 ⁰F [-55 to 150 ⁰C], UV tolerant

Standard Lengths: 10, 25 and 50 ft. [3.1, 7.6 and 15.2 m]

Connecting Plug: 0.60” [15.24 mm] nominal diameter

Transmitter

Power Requirement: 24 VAC (22.8 to 26.4 under load) @8V-A

User Interface: 16-character LCD display and 4 button interface

B.A.S. Connectivity Options

EF-A2000 Transmitter: Two field selectable (0-5/1-5/0-10/2-10 VDC), scalable and protected analog output signals (AO1=airflow or airflow 1, AO2=airflow 2, temperature or alarm)

* The VDC output circuit of the EF-A2000 transmitter can drive the input circuit of devices designed to measure 4-wire current loops with a resistive load ≥250 ohms.

Relay

Type: Dry Contact w/ onboard jumper to drive a remote LED (R1=alarm)

Status: N.O. or N.C. via user setup configuration

Rating: 30 VDC or 24 VAC @ 3 amp. max.

Airflow Alarm

Type: Low and/or high user defined setpoint alarm

Tolerance: User defined % of setpoint

Delay: User defined

Zero Disable: Alarm can be disabled when the airflow rate falls below the low limit cutoff value (unoccupied periods)

Reset Method: Manual or automatic

Visual Indication: Yes, LCD display

Network Indication: Yes (EF-N2000 only)

Analog Signal Indication: Yes, on AO2 assignment (EF-A2000 only)

Contact Closure Relay: Yes, on R1 assignment

System Status Alarm

Type: Sensor diagnostic system trouble indication

Visual Indication: Yes, LCD display

Network Indication: Yes (EF-N2000 only)

Analog Signal Indication: Yes, on AO2 assignment (EF-A2000 only)

Contact Closure Relay: Yes, on R1 assignment

UL: 60730-1, 60730-2-9; CAN E60730-1, E60730-2-9 (EF-A2000-U
Only)