Contact Us Today!     1-877-446-8765

Small Ducts & Rooftop Units

GF Series

Thermal Dispersion Airflow & Temperature Measurement with Optional Relative Humidity

The GreenTrol GF Series offers a versatile range of high-performance airflow and temperature measurement solutions tailored for small ducts, rooftop units, and outdoor air intakes. These devices deliver precision, flexibility, and reliability to optimize ventilation, improve indoor air quality, and enhance energy efficiency.

The GF Series features analog and RS-485 BACnet/Modbus transmitters and probes designed for various applications. Using integrated thermal dispersion technology, the series ensures accurate airflow and temperature measurements across round ducts and other air paths. Models like the GF-A2000 and GF-N3000 include advanced transmitter modules that support multiple probes, provide airflow alarms, and seamlessly integrate with building automation systems.

Model Suffixes:

Whether used as standalone devices or integrated into a building automation system, the GF Series offers unmatched performance and adaptability, making it the ideal solution for airflow and temperature measurement in smaller systems and rooftop units.

Model

Measurement

Application

Probe Type and Sizes

Remote Transmitter

Alarm

Connectivity

Airflow,

Temperature

Rooftop OA Hoods and Intakes

(≤ 8 ft2 opening)

-US: Universal Standoff

6", 8", or 16"

Dual Analog Outputs

Airflow,

Temperature

Square Ducts

(≤ 8 ft2 opening)

-UI: Universal Insertion

6", 8", or 16"

Dual Analog Outputs

Airflow,

Temperature

Round Ducts

(4 to 16")

-DI: Duct Insertion

4 to 16"

Dual Analog Outputs

Airflow,

Temperature

Round Ducts

(4 to 16")

-DI: Duct Insertion

4 to 16"

Single Analog Output

Airflow,

Temperature

Round Ducts

(4 to 16")

-DI: Duct Insertion

4 to 16"

Dual Analog Outputs

Airflow,

Temperature

Rooftop OA Hoods and Intakes

(≤ 8 ft2 opening)

-US: Universal Standoff

6", 8", or 16"

BACnet or Modbus

Airflow,

Temperature

Square Ducts

(≤ 8 ft2 opening)

-UI: Universal Insertion

6", 8", or 16"

BACnet or Modbus

Airflow,

Temperature

Round Ducts

(4 to 16")

-DI: Duct Insertion

4 to 16"

BACnet or Modbus

Airflow,

Temperature

Round Ducts

(4 to 16")

-DI: Duct Insertion

4 to 16"

BACnet or Modbus