Ebtron GTC116 Installation Manual - Ebtron
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5.7 GTC116 ‐ Analog Output Type Selection and Setup
The analog output signal type at AO1 (OUT1, airflow) and AO2 (OUT2, temperature/alarm) can be set for mA or
VDC output by setting switches SW1/SW2 (Figures 6 and 7) and by selecting the 4‐20mA, 0‐5 VDC or 0‐10VDC
ranges in the ANALOG OUT sub menu options *AO1 RNGE= / *AO2 RNGE= settings. The transmitter is shipped
from the factory with SW1/SW2 and Setup menu options *AO1 RNGE= and *AO2 RNGE= set for 4‐20mA.
5.7.1 GTC116 ‐ Converting Analog Output Signal Values to Airflow and Temperature
Table 7 lists specific conversion equations for analog voltage or current output options.
5.7.2 GTC116 ‐ AO1/AO2 OUTPUT TEST ‐ Sending a Test Output Signal to the Host Control
System
A test output signal between 0 and 100% of the full scale output (4‐20 mA or 0‐5VDC/0‐10VDC) can be provided
by the GTC116 transmitter to verify proper conversion of the output signals from the transmitter at the host
control system. To set a fixed output signal for airflow and temperature, navigate to the OUTPUT TEST submenu in
the TOOLS menu. OUT1 and OUT2 tests are independently accessed, and the output will maintain the
% selected
until the “ESC” button is pressed and normal operation resumes.
Table 7. GTC116 Converting Analog Output Values to Airflow/Temperature
TO CONVERT TO
Airflow (FPM, MPS)
Output Voltage/10 x FS1
Output Voltage/5 x FS1
(Output Current-4)/16 x FS1
Airflow (CFM)
Area (SQF) x Output/10 x FS1
Area (SQF) x Output/5 x FS1
Area (SQF) x (Output - 4)/16 x FS1
Airflow (LPS)
Area (SQM) x Output/10 x FS1 x 1000
Area (SQM) x Output/5 x FS1 x 1000
Area (SQM) x (Output - 4)/16 x FS1 x 1000
TO CONVERT TO
Airflow (CFM, LPS)
Output Voltage/10 x FS1
Output Voltage/5 x FS1
(Output Current - 4)/16 x FS1
TO CONVERT TO
Temp (°F,°C)
Output Voltage/10 x (FS2-MS2) +MS2
Output Voltage/5 x (FS2-MS2) +MS2
(Output Current - 4)/16 x (FS2-MS2) +MS2
NOTES:
FS1 is AO1 full scale analog output value from ANALOG OUT MENU.
FS2 is AO2 full scale analog output value from ANALOG OUT MENU.
MS2 is AO2 minimum scale analog output value from ANALOG OUT MENU.
0-10 VDC
0-5 VDC
4-20 mA
ANALOG OUTPUT SCALING AND TYPE
0-10 VDC
0-5 VDC
4-20 mA
When OUTPUT 2 is Configured as Temperature (°F,°C):
ANALOG OUTPUT SCALING AND TYPE
0-10 VDC
0-5 VDC
4-20 mA
ANALOG OUTPUT SCALING AND TYPE
When OUTPUT 1 is Configured as Linear Airflow (FPM, MPS):
When OUTPUT 1 is Configured as Volumetric Airflow (CFM, LPS):