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The GF-A2000-US is provided with a single integrated duct probe but can handle up to two integrated universal standoff probes. The GF-A2000-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-A2000 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.
Airflow Measurement: Provides the average airflow rate in FPM [m/s] or CFM [LPS] on the LCD and to analog output AO1 and optionally AO2 when two probes are provided
Configurable Ranges: 0-5V/1-5V or 0-10V/2-10V- specify at time of order
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 or analog output AO2
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 sensor node/probe
Dual Probe: 2 probes x 1 sensor node/probe
AO1
Assignment: Average airflow output signal of connected probes (P1 and/or P2) or P1 if AO2 is assigned to P2
Configurable Ranges: A0-5V, 0-10V or 2-10V
AO2
Assignment: Airflow output signal of P2, average temperature output signal of connected probes or notification alarm
Configurable Ranges: A0-5V, 0-10V or 2-10V
Note: The VDC output circuit can drive the input circuit of devices designed to measure 4-wire, 4-20 mA, current loops with a resistive load ≥250 ohms
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.
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%
