Powerful and rugged field data logger
12 differential (or 24 single ended) channels
Ideal for demanding research applications
Free use of DeltaLINK-Cloud data sharing service
The GP2 is a powerful 12 channel data logger that is easy to use, versatile, rugged and reliable. It can log most sensor types and accepts voltage, resistance, current, potentiometer, bridge, counter, frequency, and digital state inputs. DeltaLINK software helps the user set up logging sequences and provides control over reading frequency, sensor type, thresholds, units and much more. All Delta-T sensors can be selected from a menu.
Advanced features of the new GP2 Data Logger and Controller
Powerful, yet highly accessible Script Editor
Unique Simulator function
Smart irrigation and fertigation
Model implementation, simulation and evaluation
Evapotranspiration calculation and analysis
Customised control (simple or advanced)
Control conditions for experiments and applications can range from simple thresholding to sophisticated calculations using the Script Editor. Control parameters (e.g. target soil moisture level) can be adjusted without interrupting data logging.
The GP2 is a flexible and powerful research and control instrument – enabling model implementation, simulation and evaluation. The new Script Editor is easy to use, yet allows the creation of complex functions such as disease prediction, degree days, dew point, wind chill factor, PID control, and evapotranspiration calculation and analysis.
Script Editor creates sequences of operations to implement models
Advanced control and recording capabilities
Easy user interface: no typing out of commands; no programming language
Implement simple or complex conditions, algebraic expressions and record result values
Create and manipulate variables e.g. for disease risk factor
This powerful software feature creates step by step operations to control simple or complex processes or recording requirements. The editor interface is easy to use – no programming language is involved. It can also implement models, useful in areas such as disease prediction or multi-zone irrigation. This degree of sophistication, including the ability to apply PID control, means the potential applications are numerous and varied.
Calculations based on the measurements from several input channels can be recorded and displayed as additional “virtual channels”.
Test and optimise logging programs using the built-in Simulator.
Simulate how the program responds to changes in weather data, irrigation systems and soil moisture movement etc.
This unique software feature allows logging programs to be tested before real-world activation. For applications involving weather data, irrigation or soil moisture recording, the environmental variables can be changed to test how the program responds. Years of logging time can be simulated in just a few minutes.
12 differential (or 24 single-ended) analog inputs conﬁgurable as: Voltage, Resistance (12 3-wire or 24 2-wire), Bridge (12), Potentiometer (12)
4 digital inputs as: Counters, (2 fast + 2 slow), Frequency, Digital state
1 Delta-T WET sensor channel Unlimited virtual channels
Serial input channel: 62 SDI-12 sensors or a single WET Sensor
Control outputs 2 relay outputs expandable to 6 (1A)
Readings stored 2.5 Million
Recording rate 1 second to 24 hours
Communication options USB, RS232, ethernet or modem
Sensor excitation Calibrated 3V reference, +5 V and+12 V regulated, or 5 to 10.5 V (battery or external power), user selectable
Power 6 AA alkaline batteries or external power 10-15V DC
Battery life (dependent on usage) >310K readings, lasting 530 days
Enclosure rating IP65
Temperature range -20 to +60°C
Size 225 x 185 x 75 mm
Typical applications Demanding research projects
Varied control applications
Sensor compatibility (maximum number of sensors that could be connected 
ML3 ✓ (6) with temp / (12) without temp
SM150T ✓(6) with temp / (12) without temp
PR2 ✓(2 PR2/6 with expansion lid) (3 PR2/4 with expansion lid)
PR2 SDI-12 ✓ (50)
WET Sensor ✓ (1)
EQ3 ✓ 6 with temp / 12 without temp
Temperature ✓ (12)
Tensiometers ✓ (12)
Counters or Events ✓ (4) 2 fast 2 slow
Relay Output ✓(2) expandable to (6)