GreenFlow
GF Series
 
    GreenFlow Product Family

The GreenFlow GF series airflow stations provide high quality economical general airflow measurement using advanced Thermal Dispersion (TD) technology for accurate, repeatable airflow and temperature measurement from zero flow (still air) to 2,000 FPM, and from -20° to 160° F [-28.9° to 71.1° C]. The GF series' accurate airflow measurement and flexible programmable alarm capabilities are key elements in the acquisition of LEED® credits for Energy and Atmosphere and Indoor Environmental Quality. An integral LCD display provides for local indication of measurement, device configuration and for local alarm status. The programmable alarm feature can be configured as dry relay contacts or as a direct driver for external LED alarm indication (15mA typical). In addition, an advanced variable airflow signal filter integration option can be engaged to minimize airflow fluctuations (resulting from transient wind gusts when installed near intake louvers) at low air flows, and an innovative Field Calibration Wizard can be engaged ensure simple, intuitive adjustment to factory calibration where required. The GF-2000 series accepts up to two airflow probes and provides two analog outputs with additional programmable PID capability. The GF-1000 series is equipped with a single airflow probe and single simple analog output interface. All GreenFlow products are backed by a 12 month limited warranty.

GF-2000 Series

The GF-2000 Series includes two separate outputs for airflow and temperature, or for measurement of two separate air streams on models equipped with two probes (GF-2200-A). The GF-2000 Series includes built-in PID options and tunable PID algorithms for 0-10VDC, 0-5VDC or 2-10VDC control of external devices such as VFDs, Damper Actuators or similar devices. The two-probe GF-2200 provides for an additional airflow traverse point in single air stream applications, or can be set up for measurement of two separate air streams - ideal for continuous OA/EX flow monitoring and maintenance of balance and efficiency in Energy Recovery Ventilators. GF-2000 series probes include versatile universal brackets designed for a wide range of equipment applications.

   
empty   GF-2200-A Universal Airflow/Temperature Measurement/Alarm/PID Control Solution

Model GF-2200-A includes two airflow/temperature probes factory calibrated to NIST traceable standards and a GF-2000 transmitter with dual selectable analog/PID control signal output options:

  • Flow/Flow: Probe 1 Airflow Rate Output / Probe 2 Airflow Rate Output

  • Flow/Temp: Probe 1+2 Avg. Airflow Rate Output / Probe 1+2 Avg. Temperature

  • Flow/PID: Probe 1+2 Avg. Airflow Rate Output / Corresponding PID Signal Output

  • PID/PID: PID 1 Output for Probe 1 flow / PID 2 Output for Probe 2 flow

  • LCD Display of Airflow, Temperature and Alarm Status

  • Alarm N.O. or N.C. Relay Contacts or Direct LED Drive (15mA typical) and LCD indication

  • Powerful variable airflow signal integration to minimize airflow fluctuations at low air flows

  • Innovative Field Calibration Wizard

  • 10 ft plenum rated FEP cable (optional cable lengths available up to 50 feet)

    Model GF-2200-A Data Sheet (PDF)
    Model GF-2100-A/GF-2200-A Manual (PDF)

    Guide Specification for GF-2000 Series (PDF)
    Guide Specification for GF-2000 Series (Word)
   
empty   GF-2100-A Universal Airflow/Temperature Measurement/Alarm/PID Control Solution

Model GF-2100-A includes a single airflow/ temperature probe factory calibrated to NIST traceable standards and a GF-2000 transmitter with dual selectable analog/PID control signal output options:

     

GF-1000 Series

The GF-1000 Series includes a single thermal dispersion airflow probe factory calibrated to volumetric airflow standards and a GF-1000 transmitter with single analog output. The airflow probe calibrated accuracy is 3% typical (4% maximum) of reading. The GF-1000 Series analog output can be configured for 0-10VDC, 0-5VDC or 2-10VDC (20 mA maximum) for communication with virtually all modern building automation systems (BAS). An innovative programmable alarm feature can be configured as dry relay contacts or as direct drive for external LED alarm indication (15mA typical). The GF-1200-A airflow probe version is well suited for a wide range of airflow measurement applications in ducts from 4 to 16 inches, and is ideal for small ducted outside airflow measurement applications. An integral insertion mounting bracket on the airflow probe provides for simple field installation. Model GF-1200-A includes an advanced variable airflow signal filter integration feature to minimize airflow fluctuations at low air flows (e.g. resulting from transient wind gusts when installed near intake louvers). The GF-1200-A also includes an innovative Field Calibration Wizard for simple, intuitive adjustment to factory calibration where required.

   
  GF-1200-A Universal Airflow/Temperature Measurement/Alarm Solution

Model GF-1200-A airflow measurement package includes a single 4 to 16-inch two sensor airflow probe factory calibrated to volumetric airflow standards (single sensor on 4 inch probe) and a GF-1000 transmitter with single analog output:

     
   
 


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