Efento SP. J.
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fluctuation. For example, a user can set the sensor to compute the average value of five temperature
measurements, and check if the difference between the last sent measurement and the average value is
larger than 0,5 C.
There are two modes for the average value calculation:
● Moving average mode
- device calculates the average value out of the last N samples. If there
is a new measurement, it is taken to the average value calculation instead of the oldest one.
Users can define how many measurements should be taken into the account when calculating
the average value. For instance, if the user set the device to calculate the average value from the
last three samples, the device will calculate the average value from samples N-2, N-1 and N.
Once a new measurement is taken, the average value will be calculated from samples N-1, N,
N+1.
● Window mode
- device calculates the average value out of the all samples in the window size.
The window ‘moves’ once the device has taken a number of measurements equal to the window
size. Users can define how many measurements should be taken into the account when
calculating the average value. For instance, if the user set the device to calculate the average
value from the last three samples, the device will calculate the average value from samples N-2,
N-1 and N. The new average value will be calculated as soon as the device has taken three new
measurements (N+1, N+2, N+3).
In order to set the threshold values:
1. Connect to the sensor with Efento Logger, tap on the three dots in the upper right corner ->
“Settings” -> “Device settings” -> “Alarm thresholds”
2. Set the threshold values and types for each slot. If you want to, you can set the threshold for one
slot only or you can only set one type of threshold for a selected slot (lower, upper, differential)
Measurement interval
Measurement interval defines how often the sensor takes a measurement. It is possible to set the
measurement interval to any value from 1 minute to 10 days. Changing the measurement period
removes all measurement data from the device memory.
In order to set the measurement interval:
1. Connect to the sensor with Efento Logger, tap on the three dots in the upper right corner ->
“Settings” -> “Device settings” -> “Change measurement period”
Transmission interval
With this parameter you can set how often the sensor sends data to Efento Cloud platform or a server.
You can set any value from 5 minutes to 10 days. The maximum value of the transmission interval
depends on the measurement interval - it can be set to 60 times the measurement interval (e.g.
measurement interval = 1 minute, transmission interval can be set to any value from 5 minutes to 60
minutes).
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