1050 Hopper Ave, Santa Rosa, CA 95403 • Tel (800) AIRFLOW • www.airmonitor.com [email protected]
ELECTRA-flo G5 Transmitter Thermal Airflow & Temperature Measurement System 1015-3 - 07/18
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The Air Monitor BACnet stack supports the optional property “DESCRIPTION”. This is used
to indicate the type of information in the object. For example, for an ELECTRA-flo system,
the description will indicate as “Total Flow” for average flow, or “Avg Temp” for average
temperature. If the object belongs to a sensor in the system, it will be indicated as “SensorN
Temp” or “SensorN Flow”, where N is the sensor address. The amount of AI objects is
determined by the total number of sensors in the system x 2 with an additional 2 AI objects for
system average flow and system average temperature. For example, an ELECTRA-flo system
with 8 sensors will have a total of 18 AI objects.
Usage of Status Flags
• Each object supports status bits IN_ALARM, FAULT, and OUT_OF_SERVICE.
• The OOS property indicates the physical input to the object is not in service. This will
be set by the transmitter if someone intentionally removes the sensor from the network.
If the transmitter determines there is a problem with any sensor in question, the OOS bit
is set along with the FAULT bit. If the OOS property is set, data from the physical device
will not be used in any calculation.
• IN_ALARM is set for values which exceed the predetermined values set in the transmitter
memory. This field only affects the Avg Temp and Avg Flow Analog Input objects
BACnet Engineering Units for Analog Inputs (Defaults)
Flow Rates: Cubic feet per minute, Liters per minute
Temperatures: Degrees Fahrenheit, Degrees Celsius
ANALOG INPUT OBJECTS
Object Identifier
Function
Analog Input 1
Average Flow Rate
Analog Input 2
Average Temperature
Analog Input (2 + X)
Sensor X Flow Rate
Analog Input (3 + X)
Sensor X Temperature
ANALOG INPUT OBJECTS (Dual Channel)
Object Identifier
Function
Analog Input 0
Average Sys1 Flow
Analog Input 1
Average Sys1 Temperature
Analog Input 2
Average Sys2 Flow
Analog Input 3
Average Sys2 Temperature
Analog Input 4
Sys Flow Plus
Analog Input 5
Sys Flow Minus
Analog Input 6
Sys_1_Velocity_1
Analog Input 7
Sys_1_Temperature_1
The number of Sys_1_Vel & Sys_1_Temp objects will
vary depending on the number of sensors provided with
the channel 1 probe(s).
Analog Input X
Sys_2_Velocity_1
Analog Input X+1
Sys_2_Temperature_1
The number of Sys_2_Vel & Sys_2_Temp objects will
vary depending on the number of sensors provided with
the channel 2 probe(s).
