GP2 - Advanced Data Logger and Controller SDI-12 compatible


Delta T


  • Powerful and rugged field Data Logger
  • 12 differential channels (or 24 single ended)
  • Ideal for demanding research applications
  • Compatible with our DeltaLINK-Cloud online data sharing platform
  • Calculation of full Penman-Monteith evapotranspiration equation

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.

1 400,00 €

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Environment of Use Indoor/Outdoor
Type of Logger Multicanal
With Display State LED's

GP2 Data Logger and Controller now SDI-12 compatible

The GP2 Data Loggerfeatures powerful controller functionality,and sophisticated programs can be easily created viaasimple scripting editor. Tolearn more about the advanced features of the GP2 click on the bluebutton above.

Power and flexibility
As the user’s needs change, the GP2 can adapt. Optional lids are available with additional cable entry points, dedicated Profile Probe inputs, or with wider diameter cable entry points. SDI-12 compatible for Delta-T or third party sensors.

The number of relay outputs can also be expanded - the standard GP2 has 2 relay channels but this can be increased to 6 with the optional Relay Expansion Module. The GP2 can also be networked with other GP2s.

Building systems with the GP2 Data Logger
The GP2 is the ideal data logger for field work, with applications ranging from agronomy, meteorology and hydrology to eco-physiology and soil science. We can supply complete systems including sensors, enclosures, solar power and communications options.

The GP2 Data Logger is compatible with all Delta-T sensors. For the Delta-T WET Sensor there is a dedicated input channel and for the PR2 Profile Probe there is an optional dedicated lid.

Delta-T has decades of experience of instrumentation for environmental research and can advise on all aspects of system specification.


The GP2 Data Loggercan log most sensor types and accepts voltage, resistance, current, potentiometer, counter, frequency, and digital state inputs.

The GP2’s analog inputs can be fully customised. Each channel can have its own input type and recording parameters. DeltaLINK software gives the user control over reading frequency, thresholds and units, and provides statistical recording options for Average, Minimum, Maximum, Standard Deviation and more. Specialised wind options are available including wind rose, gusts and wind averaging.

Users can add their own custom sensor types to the sensor library, exploiting the GP2’s detailed configuration options. The GP2 provides 4 input ranges down to microvolt resolution with adaptive auto-ranging, excellent analog accuracy, and configurable sensor excitation - enabling it to support nearly all analog sensors.

Calculations based on the measurements from several input channels can be recorded and displayed as additional virtual channels (calculated measurements).

Ease of use
Simple point and click software makes it easy to configure channel set-up and recording intervals. The menus that support the advanced customisation options can be displayed or hidden as required.

Sensor connections are laid out logically with clear, easy-to-follow diagrams and notes.

The GP2’s weatherproof case, battery power and convenient accessories make it very easy to install in the field – often without the need for a secondary enclosure.

Storage, communications and power

4 Mbytes of FLASH memory enable storage of 2.5 million readings (typical). Data can be collected by alaptop locally via USB/RS232 or remotely using the GPRS or GSM modem options.

The GP2 has 6 alkaline AA internal batteries as standard. An optional mains power adapter is available (type GP2-PSU). Up to 7 GP2s can share power and communications using an M12 cabling network.

The GP2 Data Logger has a wide range of environmental, agricultural and industrial applications:

Horticulture and Irrigation - Soil Science - Plant Physiology - Agronomy - Climate Research and Meteorology - Agriculture - Turf and Gardens - Amenity Landscaping - Ecology - Field Trials - Eco-Physiology

GP2-G5-LID Expansion Lid with 5 cable glands
MD-GPRS-1 GPRS modem kit for mounting with GP2 Logger into M-ENCL-B2 enclosure
M2-FSG 2m mast for GP2 Logger
M2-MIN-FSG M2-FSG 2m mast, excluding logger canopy
GP2-P2-LID Expansion Lid with 2 Profile Probe connectors
M2-Base M2 BASE Base socket for M2-FSG, M2-MIN-FSG or S-POLE
GP2-RLY Relay Expansion Module for GP2 - provides 4 extra relay outputs
GP2-NTP Network T-Piece for connection to M12 cabling network
GP2-NPC GP2 Network Power Cable
GP2-PSU Mains Power Supply for GP2 Data Logger
GPRS-BX1/SP GPRS Modem Box (solar power)
GP2-SER Service Pack for GP2 Data Logger
GP2-USB USB cable for GP2 Data Logger
GP2-RS232 cable for GP2 Data Logger
PC-UK Mains lead, UK plug to IEC connector
PC-EU Mains lead, EU plug to IEC connector
PC-US Mains lead, US plug to IEC connector
PC-IN Mains lead, India/S Africa plug to IEC connector
PC-CN Mains lead, China/Australia/NZ plug to IEC connector
M-ENCL-B2 Enclosure for GP2

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