The EF‐x2000‐T is EBTRON’s top‐of‐the‐line measurement solution for round ducts between 4 and 16 inches in diameter. Ideal for most small duct airflow measurement and volumetric airflow tracking applications. More features than the EF‐x1000‐T make this the best choice for all small duct measurement applications.
EB-Flow
Series 2000
EF-x2000-TAirflow Measurement with Temperature & Alarm Capability
EF-x2000-T
EB-Flow
Series 2000
EF-x2000-TAirflow Measurement with Temperature & Alarm Capability
- Thermal Dispersion Technology
- Cost Effective Single Probe
- NIST-traceable Calibration
- %‐of‐reading Accuracy
- Airflow and Status Alarm
- Temperature Output Capability
- Analog and RS‐485 Output Models
- Dry Contact Relay
- Remote Transmitter with LCD Display
- 3‐year Warranty
Typical Applications
- High-Performance CV/VAV Terminal Box Measurement
- Small Duct Outdoor Air Delivery Monitoring
- Small Duct Airflow Tracking
- Hospital Pressurization
- Laboratory Pressurization
Benefits
- Improve Terminal Box Performance with Turndown
- Comply with ASHRAE Standards
- Satisfy LEED Prerequisites and Credits
- Provide Acceptable IAQ
- Save Energy
- Reduce Liability
- Improve Performance
Product Highlights
- Accurate & Repeatable
- Low Airflow Capability
- Volumetric or Mass Airflow Measurement
- Long-term Stability
- “Plug-and-Play” Operation
- Intuitive User Interface
- Waterproof Sensor Assembly
- FEP Plenum Rated Cable
GENERAL
Probe and Sensor Node Configurations
1 probe x 1 sensor node/probe (4 inch [101.6 mm] probe)
1 probe x 2 sensor nodes/probe (5 to 16 inch [127.0 to 406.4 mm] probes)
Installed Airflow Accuracy¹
Typically better than ±3% of reading
Sensor Node Averaging Method
Airflow: Independent arithmetic average
Temperature: Independent, velocity weighted or arithmetic average
Listings
UL: 60730-1; UL 60730-2-9 (HVAC Controls)
Environmental Limits
Temperature:
Probes: 0 to 2,000 fpm [0 to 10.16 m/s]: -20 to 160 ⁰F [-28.9 to 71.1 ⁰C]
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: Precision, hermetically sealed, bead-in-glass thermistor probe
Sensing Node Housing
Material: Glass-filled Polypropylene (Kynar® with /SS option)
Sensor Potting Materials: Waterproof marine epoxy
Sensing Node Internal Wiring
Type: Kynar® coated copper
Airflow Measurement
Accuracy: ±3% of reading to volumetric 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)
Calibrated Range: -20 to 160 ⁰F [-28.9 to 71.1 ⁰C]
Calibration Points: 3
Sensor Probe Assembly
Tube
Material: Mill finish 6063 aluminum (316 stainless steel with /SS option)
Mounting Brackets
Material: 304 stainless steel
Mounting Options & Size Limits
Insertion: 4, 5, 6, 7, 8, 9, 10, 12, 14, and 16 inch round [101.6, 127.0, 152.4, 177.8, 203.2, 228.6, 254.0, 304.8, 355.6 & 406.4 mm]
Probe to Transmitter Cables
Type: FEP jacket, plenum rated CMP/CL2P, UL/cUL listed, -67 to 392 ⁰F [-55 to 200 ⁰C], UV tolerant
Standard Lengths: 3, 10, 25 and 50 ft. [0.9, 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, AO2 = 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 at 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.
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