GroPoint GP-DU SDI-12 User Manual
The GroPoint GP-DU Handheld SDI-12 Reader is capable of reading all GroPoint SDI-12
sensors. It is a useful device for viewing current measurement conditions when sensors
are not connected to an SDI-12 Logger. The display unit automatically detects a sensor’s
address, issues the measure command, and then reports the results when the
measurement is completed. Although designed with GroPoint sensors in mind, the
display unit can also be used (with other SDI-12 sensors with some possible limitations).!
GP-DU!
Handheld SDI-12 Sensor
Reader!
USER MANUAL
Growing innovation.
1
GroPoint™ is a division of RioT Technology Corp.
1 833 GRO-POIN (N. America) or 250 412 6642
gropoint.com
Operating the Reader!
1. Press the POWER button to activate the reader. The message “READY” is displayed.
The reader is ready to take a reading.
2. Connect a sensor to the reader’s mating connector.
3. Press the MEAS button to start a measurement. The display shows “READING” while
the measurement is taking place. When the measurement is finished, the results are
shown. For GroPoint sensors, there will be a label indicating the type of
measurement, for example “MOIS” for a GroPoint Lite sensor’s soil moisture reading
and “TEMP” for its temperature reading. The table below lists the labels for the
various sensor types.
•
For devices that support multiple measurements, you may press the NEXT and PREV
buttons to scroll through the list of available measurements. Scrolling past the last
measurement displays the first measurement again, and vice versa.
•
You may press and hold the MEAS button to take continuous readings from the
currently displayed measurement value. The display is updated with the new value
and the next measurement will be immediately started.
•
If any kind of communication error occurs, for example an attempt to measure with no
sensor connected, then the message “ERRORNO SENSOR DETECTED” will be
scrolled across the screen. Check connections, then press the MEAS, NEXT or PREV
button to return the unit to the “READY” state.
Sensor
Parameter Measured
Label and Example Reading
GroPoint Lite
Soil Moisture (%)
Soil Temperature (°C)
MOIS.+23.6
TEMP.+22.8
GroPoint Profile
Soil Moisture (%)
Soil Temperature (°C)
SEG.n+23.6
(n is current segment)
T.n+22.8C
(n is current temp.sensor)
GroPoint Pro
Soil Moisture (%)
Bulk Elec. Cond (dS/m)
Soil Temperature (°C)
Wetting Front
MOIS.+23.6
EC.+2.06
TEMP.+22.8C
WF.+n (n is 0-9)
Other SDI-12 Sensors
Unknown
VAL.n.±d.d
(n is current measurement, d.d is
reading value)
Growing innovation.
2
GroPoint™ is a division of RioT Technology Corp.
1 833 GRO-POIN (N. America) or 250 412 6642
gropoint.com
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