Automation, Inc.
™
TM_GF-
A
2
1
00_2200_R1B
5
GF-A2100
AND
GF-A2200 A
IRFLOW
M
EASUREMENT
S
TATION
Air Flow Measurement, PID Control and Alarm Solution - Analog Output
GreenTrol Automation, Inc.
•
156 Holly View Lane Loris, SC 29569
•
Toll Free: 877-4GN-TROL (877.446.8765)
•
Internet:
GreenTrol.com
OVERVIEW
Models GF-A2100 and GF-A2200 are high quality economi-
cal programmable dual-output airflow/temperature meas-
urement and control instruments with options for analog air
flow, temperature, alarm, and corresponding PID control out-
puts for control of airflow set points. They are designed for
installation in specified critical applications that require pre-
cise measurement of air flow (down to zero flow) and temper-
ature, with available PID control for air flow set point. The
instrument includes factory calibrated probes (one with GF-
A2100, two with GF-A2200) and an advanced microproces-
sor controlled transmitter/controller with typical sensor accu-
racy of 3% of reading (4% maximum)* from 0 - 2,000 FPM.
Figure 1. GF-A2100/GF-A2200
Airflow Measurement Station
* Sensor accuracy is the calibrated accuracy of the individual sensor. The installed accuracy of the overall airflow station is application-dependent on the resulting sen-
sor density; typically better than 15% of reading.
Each sensor probe is equipped with a high reliability bead-in-glass heated thermistor element, factory calibrated to NIST
traceable standards from zero flow to 2,000 FPM. The transmitter is fully independent of the probe and does not require
field matching to the probe. An advanced microprocessor processes the raw probe signals and provides versatile pro-
grammable airflow measurement and alarm options with direct LED drive or N.O./N.C. relay dry contacts, and selectable
analog output signal options. A powerful variable input signal integration option can be engaged to reduce the effects
of transient input signal variations, and an innovative Field Calibration Wizard allows for simple, automated field adjust-
ment of the instrument if required. A 16 character LCD display indicates airflow, temperature, system status and is also
used for configuration and diagnostics. Field configuration is accomplished using a simple four-button user interface.
Individual airflow and temperature measurements can be displayed for use in HVAC system diagnostics.
An input signal filter with variable buffer integration can be engaged for transient flows, and a process low limit can be
set to force the output to zero when the airflow rate falls below a low limit. Both features are beneficial on outside air
intakes affected by transient wind gusts at low airflow rates. A simple to use Field Calibration Wizard permits one or two
point field adjustment to factory calibration for installations that require field calibration or adjustment. The transmitter
provides two independent programmable analog outputs with full scale ranges of 0-10VDC, 0-5VDC or 2-10VDC.
SPECIFICATIONS
System:
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Sensor Accuracy*: ± 3% of reading typical (4% maximum)
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Calibrated Range: 0 to 2,000 fpm [10.16 m/s]
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Operating Temperature: Transmitter: -20 to 120°F [-28.9 to 48.9°C]
Sensor: -20 to 160°F [-28.9 to 71.1°C]
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Operating Humidity Range: 0 to 99% non-condensing and protected
from exposure to precipitation.
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Power Requirements: 24 VAC (22.8-26.4 VAC) at 8VA maximum
Transmitter Enclosure
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Enclosure Material: Durable UL94V-0 rated electronic housing and
removable cover
•
Transmitter Dimensions:
3.570 x 5.002 x 1.502 in (HxWxD) [90.68 x 127.05 x 38.15 mm],
with two integral 0.502 [12.75 mm] mounting flanges. Overall width
with flanges 6.006 [152.55 mm]
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Transmitter Mounting: Two 0.190 in [4.76 mm] diameter holes on
left/right mounting flanges
Sensor Probe
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Probe Construction: Type 6063 aluminum standard
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Mounting Brackets: Universal mounting brackets or adjustable inser-
tion mounting brackets
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Probe Dimensions: 0.75 in [19.05 mm] diameter
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Standard Sizes: 8 and 16 inches [203.2 and 406.4 mm]
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Probes / Sensing Nodes: GF2100: 1 probe / 1 sensing node max.
GF2200: 2 probes / 1 sensing node max.
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Probe/Transmitter Cable: Standard 10 ft [3.05m] durable FEP
plenum-rated jacket with circular DIN plug; Optional length up to 50 ft
[15.24m]
Output Interface
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Analog Output: Non-isolated 0-10, 0-5 or 2-10 VDC (20 mA max.)
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Output Resolution: 0.021% FS: 0-10/2-10VDC; 0.42% FS: 0-5VDC
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Output Load: 500 ohm minimum (20 mA max)
Programmable Output Alarm Options:
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Airflow Low limit, High limit, Dead Band alarm/control output
(% above or below a specified flow) or System Trouble Alarm
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Alarm type: Selectable dry relay contacts, 30VDC/24VAC
3 Amps maximum or direct LED drive (15 mA typ) and local LCD
Programmable PID Control and Input Filter Options:
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Output can be configured as a PID control for air flow set point
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Powerful input signal filter with variable integration buffering
Field Cal Wizard:
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Automated menu-driven field adjustment of factory calibration if
required
System Diagnostics
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Sensor/transmitter diagnostic mode with notification
Warranty
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12 months from shipment
Model GF-A2100 (1 Probe)
Model GF-A2200 (2 Probes)
Universal
Mount
Adjustable
Insertion Mount