HOBO RX3000 Remote Monitoring Station Manual
13
minimum, maximum, average, and standard deviation.
The selected statistics will be calculated between each
logging interval at the sampling interval rate you select.
Each statistical value will then be logged at each logging
interval.
d.
Enable “Use excitation power” if you want sensors to
use the 12 V DC excitation voltage provided by the
station. Select warmup and enter the seconds or
milliseconds (5 milliseconds to 120 seconds), or select
continuous. Note that the excitation power selected will
be used for all of the module’s configured sensors.
•
With warmup, the station supplies excitation power,
12 V DC, for a brief period prior to each
measurement. This allows you to select the minimum
warm-up time needed to allow for sensor
stabilization while conserving battery power. For
example, if you specify a warm-up of one second and
set the logging interval for the module to one minute,
the station will power the external sensor for one
second, log a measurement, and then turn off the
excitation power for the next 59 seconds. Note that
the excitation mode is automatically set to
Continuous if the warmup time selected is within one
second of or greater than the logging or sampling
intervals.
•
With continuous, the station supplies constant
excitation power to the sensor for the entire duration
of the deployment. Continuous mode is required if the
sensor needs more than two minutes of warm-up time.
Important:
Continuous mode operation will greatly affect
battery operating life and is not recommended.
Note that excitation power will not be enabled until
logging begins (if “Logging” is blinking on the LCD, then
excitation is not being used).
e.
Click Save. You can also click Next to move from one
analog channel to the next.
f.
Click one of the four analog sensor channels from the
menu, such as Channel 1 shown in this example.
g.
Select “Enable Graph” if you want the sensor data to be
graphed in HOBOlink.
h.
Select “Enable this channel” if you want the station to
record data for this channel. If the channel is not
enabled, then it will not be part of the channel count
shown on the LCD.
i.
Type a label for the sensor (optional).
j.
Select the sensor/input type, which is needed to set the
voltage or current range for the analog input.
k.
Click the Enable Scaling checkbox and then enter the raw
and scaled unit values as defined in the sensor manual.
Type the scaled measurement type.
l.
Click Save. You can also click Next to move from one
channel to the next.
m.
Repeat steps f–l for any additional analog sensors you
need to configure for the module.
Relay Module Configuration
a.
Click one of the three relays from the menu on the left,
such as Relay 1 in the following example.
b.
Type a label and select Open or Closed for the Normal
Relay State. The label can be used to show what Open
or Closed corresponds to in your system (for example,
“closed relay turns pump on”).
c.
Select what should happen on the next connection with
the station: open relay, close relay, or leave it at its
current state.
d.
Click Save or click Next.
e.
Repeat steps a–d for any additional relays you wish to
configure.
Tip:
Refer to
Setting System and Sensor Alarms
for details on
using sensor alarms to activate the relays.
11.
Start logging.
After you have finished configuring all the settings in
HOBOlink, you can start logging when ready. Press the Start
button on the station to start logging. The station will
connect to HOBOlink (“Connection” will blink on the LCD)
and then logging will begin at the logging interval specified
for smart sensors and analog sensors (if applicable).
You can also start logging from HOBOlink. Select Start/Stop
from the Configure menu in HOBOlink and click Start.
Press this button to start logging
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