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The GF-N3000-US is provided with a single integrated duct probe but can handle up to two integrated universal standoff probes. The GF-N3000-US provides a linear analog output signal for the average airflow of one or two probes on analog output AO1. A second analog output, AO2, can be configured to output the airflow of the second probe for applications where two probes are installed in separate locations. Analog output AO2 can also be assigned to temperature or one of the notification alarms. A contact closure relay is provided that can be assigned to the notification alarms. The GF-N2000 can be configured for I-P or SI units of measure. Although the transmitter is “plug and play” and operates on power up, it is fully configurable in the field using the pushbutton interface and LCD. BAS connection is via RS-485 field selectable BACnet MS/TP or Modbus RTU. In addition to airflow, temperature, and alarm capability, device status is also available via the network.
Airflow Measurement: Provides the average airflow rate of one or two probes, or optionally of individual probes, in FPM [m/s] or CFM [LPS] on the LCD and via the network.
Temperature Measurement: Provides the velocity weighted or arithmetic average temperature in ⁰F [ ⁰C] on the LCD and to analog output AO2 when AO2 is assigned to temperature.
Notification Alarms
High/Low Airflow Alarm
System Trouble Alarm
Note: Alarms can be assigned to the contact closure relay
Display: 16-character alpha-numeric LCD
Navigation: 4-button interface
Type: Accepts GreenTrol IAT-DI, IAT-UI and IAT-US Thermal Dispersion Airflow and Temperature Measurement Probe (required). See appropriate IAT product data sheet for probe information.
Available Configurations: IAT-DI Probes
Single Probe: 1 probe x 1 or 2 sensor nodes/probe
Available Configurations IAT-UI and IAT-US Probes
Single Probe: 1 probe x 1 sensor node/probe
Dual Probe: 2 probes x 1 sensor node/probe
R1
Type: Dry contact w/ onboard jumper to drive a remote LED
Assignment: OAC alarms or Control Mode
Status: Normally Open (N.O.)
Rating: 30 VDC or 24 VAC @ 3 amp. max.
N1
Type: Non-isolated, field selectable MS/TP BACnet master or Modbus RTU connection (provide separate transformer to each GFN1000-DI or an RS-485 network isolator if isolation is required)
B.A.S. Object/Register Read/Write Access: Yes
Device Load: 1/8 load
Supported Baud Rates: 9.6, 19.2, 38.4 and 76.8 kbaud
Environmental Limits
Environmental Limits
Temperature: -20 to 120 ⁰F [-28.9 to 48.9 ⁰C]
Humidity: 5 to 95%
Important: Provide a weather-proof enclosure if the transmitter module is mounted outdoors
Power Requirement: 24 VAC (22.8 to 26.4 under load) @8.5V-A
Dimensions: 3.57H x 6.00W x 1.50D in. [90.7 x 152.4 x 38.1 mm]
Airflow Measurement: Provides individual sensor node airflow rates to compatible GreenTrol transmitters and controllers
Temperature Measurement: Provides individual sensor node temperatures to compatible GreenTrol transmitters and controllers
Type: -UI Universal Insertion Mount Thermal Dispersion Airflow and Temperature Measurement Probe
Available Configurations
Single: 1 probe x 1 sensor node
Dual: 2 probe x 1 sensor 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
Probe Tube
Material: Mill finish 6063 aluminum
Probe Mounting Brackets
Material: 304 stainless steel
Probe Length: 6, 8 or 16 in. [152.4, 203.2 or406.4 mm] (adjustable)
Sensing Node Housing
Material: Glass-filled Polypropylene
Sensor Potting Materials: Waterproof marine epoxy
Sensing Node Internal Wiring
Sensing Node Internal Wiring: Kynar® coated copper
Probe to Transmitter Cables
Material: FEP jacket, plenum rated CMP/FT6/CL2P, UL/cUL listed, -67 to 392 ⁰F [-55 to 200 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
Airflow Measurement
Averaging Method: Independent, arithmetic average
Installed Accuracy: Better than ±4% of reading to NIST traceable airflow standards
Calibrated Range: 0 to 3,000 fpm [0 to 15.24 m/s]
Calibration Points: 7
Temperature Measurement
Averaging Method: Independent, velocity weighted
Accuracy: ±0.15⁰F [0.08 ⁰C]
Environmental Limits
Temperature: -20 to 160 ⁰F [-28.9 to 48.9 ⁰C]
Note: Temperature limits for operation may be limited by the transmitter or controller selected
Humidity: 0 to 100%
