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SYSTEM
The ATMOS 41W stores encoded data for each sensor to make data storage and transmitting
convenient. ZENTRA software automatically decodes the sensor data to display them correctly.
3.2.12.2 INTERNAL SENSOR MEASUREMENT FREQUENCY
The ATMOS 41W has a data acquisition system that records measurements from the
individual sensors at predefined frequencies as described in
below. When the user-
defined sensor measurement interval (
) is reached, the measurements are
processed into the appropriate accumulations, averages, and maximums and output to final
storage for transmission to ZENTRA Cloud.
describes the internal measurement
timing and data type reported for each ATMOS 41W sensor.
Table 3 ATMOS 41W Internal Measurement Frequency and Reported Data Type
Measurement
Data Measurement
Frequency
Data Reported to ZENTRA Cloud
Each Measurement Interval
(
m
= number of minutes in
measurement interval)
Solar radiation
3 s
Average of 20
m
instantaneous solar
radiation measurements
Wind speed
3 s
Wind run is calculated from average of 20
m
saved values of both horizontal wind vectors.
Wind direction
3 s
Weighted direction calculated from 20
m
saved values of both horizontal wind vectors
Wind gust
3 s
Maximum wind gust recorded over 20
m
measurements during measurement interval
Vapor pressure
3 s
Average of 20
m
instantaneous vapor
pressure measurements
Rainfall
Each drop/spoon tip
Accumulation of rainfall over
measurement interval
Maximum rainfall rate
1 min
Maximum rainfall accumulation recorded for
a single 1-min period multiplied by 60 min/h
Air temperature
3 s
Average of 20
m
instantaneous
temperature measurements
Maximum air temperature
3 s
Maximum temperature recorded over 20
m
measurements during measurement interval
Barometric pressure
60 s
Average of
m
instantaneous barometric
pressure measurements
Barometric pressure
60 s
Average of
m
instantaneous barometric
pressure measurements
Electrical conductivity
Each spoon tip
Average of instantaneous electrical
conductivity measurements during
measurement interval
Orientation
60 s
Average of
m
instantaneous
tilt measurements
