Sutron Corporation RLR-0003-1 Manuel D’Utilisation
Bringing the Benefits of Real-Time Data Collection to the World
16
Automeasure
Automeasure refers to the radar‟s ability to automatically measure and log stage data. The user can determine
when this will occur by changing
Automeasure refers to the radar‟s ability to automatically measure and log stage data. The user can determine
when this will occur by changing
settings. Automeasure cannot be turned off.
Automeasure time and interval determine when the radar measures and logs data.
Automeasure time and interval determine when the radar measures and logs data.
E.g. Automeasure time 00:00:00 interval 00:10:00
00:10:00 data measured and logged
00:20:00 data measured and logged
00:30:00 data measured and logged
and every ten minutes afterwards…
E.g. Automeasure time 00:00:30 interval 00:05:00
00:00:30 data measured and logged
00:05:30 data measured and logged
00:10:30 data measured and logged
and every five minutes afterwards...
The
data can be accessed via SDI-12 and command line – please see page 18.
Operating Modes
There are two operating modes: normal and continuous:
There are two operating modes: normal and continuous:
In normal mode, radar spends its time in low power mode until it is time to measure or a
measurement is requested via the front panel, RS232 or SDI-12. Once the measurement is complete,
radar goes back to low power mode. This is the most commonly used mode and is recommended
unless the radar will be measuring very frequently.
measurement is requested via the front panel, RS232 or SDI-12. Once the measurement is complete,
radar goes back to low power mode. This is the most commonly used mode and is recommended
unless the radar will be measuring very frequently.
In the continuous mode, radar is constantly collecting data. When it is time to measure, radar will
use the previously collected data to instantly come up with a stage reading. The radar does not go
into low power in continuous mode. The continuous mode adds about 10 mA to the quiescent power
consumption compared with 0.25mA in the normal mode. Please note that Radar can hold only
180 samples in continuous mode. If the
use the previously collected data to instantly come up with a stage reading. The radar does not go
into low power in continuous mode. The continuous mode adds about 10 mA to the quiescent power
consumption compared with 0.25mA in the normal mode. Please note that Radar can hold only
180 samples in continuous mode. If the
and the
more than 180 samples are collected, the system will only use the last 180 samples. For example, if
the averaging time is 10 minutes, and the sample form period is one second, the radar compute the r
based on three and not ten minutes worth of data. Normal mode is unaffected by this limitation.
the averaging time is 10 minutes, and the sample form period is one second, the radar compute the r
based on three and not ten minutes worth of data. Normal mode is unaffected by this limitation.
These examples illustrate the difference between continuous and normal modes:
Normal mode with 10 second averaging:
1. 12:00:00 measure command is received (via SDI-12, front panel, RS232, or automeasure)
2. 12:00:00 sensors are powered on and measurement starts
3. 12:00:11 measurement completes with data collected between 12:00:00 and 12:00:10
4. 12:00:11 sensors are powered down
2. 12:00:00 sensors are powered on and measurement starts
3. 12:00:11 measurement completes with data collected between 12:00:00 and 12:00:10
4. 12:00:11 sensors are powered down
Continuous mode with 10 second averaging (sensors are powered on all the time):
1. 12:00:00 measure command is received (via SDI-12, front panel, RS232, or automeasure)
2. 12:00:00 measurement completes with data collected from 11:59:50 to 12:00:00
2. 12:00:00 measurement completes with data collected from 11:59:50 to 12:00:00
Desired Effect
Appropriate Mode
Low power consumption
Normal mode
Low power consumption and immediately ready data
readings (page 18)
Immediately ready and current data
Continuous mode
Very frequent measurements (every 15 seconds or less)
Continuous mode
More than 180 samples
Normal mode
Operating mode can be changed via front panel
, via
SDI-12