Description
The GP2 Data Logger and Controller is a powerful, weatherproof, research grade data logger with unique features for recording and controlling field experiments
• 12 differential channels
• SDI-12 capable
• High performance microvolt sensitivity
• Easy to set up and select sensors
• Versatile communication options
• Compatible with DeltaLINK-Cloud data viewing & sharing platform
Overview:
The GP2 is a 12 channel field data logger with advanced control capabilities – ideal for demanding research applications and field work. It is weatherproof, rugged, battery powered and comes with 12 differential analog inputs, SDI-12 serial data interface and 2 relays as standard.
For many applications the GP2 is quicker and simpler to set up and install than competitive systems, while still providing access to a rich set of features. It can log most sensor types and accepts voltage, resistance, current, potentiometer, counter, bridge, frequency, SDI-12 and digital state inputs.
The relay outputs can control experiments and applications with exceptional sophistication using the Script Editor.
The GP2 has unique reliability – built on Delta-T’s 25 years’ experience in designing and manufacturing data loggers.
Sensors / Inputs:
• 12 differential (or 24 single-ended) analog inputs configurable as:
– Voltage
– Resistance (2-wire or 3-wire)
– Bridge
– Potentiometer
– Thermistor (3-wire)
• 4 digital inputs as:
– Counters, 2 fast + 2 slow
– Frequency
– Digital state
• 62 SDI-12 inputs or a single Delta-T Devices WET Sensor
The GP2 provides a versatile solution for both simple and complex recording and control applications. Simple point and click software makes it easy to configure channel set-up and recording intervals. Delta-T sensors can be selected from a menu.
Flexibility and customisation:
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 recording frequency and units, and provides recording options for sum, total, average, standard deviation, min and max, plus specialised wind options.
Users can add their own custom sensor types to the sensor library, exploiting the GP2’s detailed configuration options. The GP2 provides 4 analog input ranges down to microvolt resolution with adaptive autoranging, excellent analog accuracy, and configurable sensor power – 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).
Expansion:
A GP2-G5-LID Expansion Lid is required if 10 or more cables need to be connected to a GP2 (the standard GP2 Logger has 9 cable glands). The Expansion Lid provides 5 additional general purpose cable glands. An Expansion lId is essential for the connection of analog Profile Probes.
The number of programmable control relay outputs can be increased from 2 to 6 using the optional GP2-RLY Relay Expansion Module. Up to 7 Data Loggers can be networked to create complex monitoring and control systems.
Dependable quality:
The GP2 is rugged, sealed and completely dependable. Its program editor has built-in error checking, and enables the full logger configuration (including advanced features) to be road-tested before activation. Sensor integrity, set-up and connections can also be checked before or during logging by viewing real-time measurements.
Fault tolerance is provided by intelligent statistics (rejecting erroneous sensor measurements), and safety conditions
(upper and lower limits on active and rest periods). The relay outputs can be configured as intelligent alarm outputs,
and LEDs on the front panel provide a quick visual reassurance that logging is proceeding correctly.
Data storage and power options:
Up to 2.5 million readings (typical) can be stored in internal flash memory (4Mb).
The GP2’s 6 internal AA batteries are sufficient for ~300k readings. External power (10 – 15 V DC, 2 A) can be connected if required. Delta-T can provide complete systems including enclosures, batteries and solar power. An optional mains adapter is also available (type GP2-PSU).
Data collection, logger networks and modem communications:
Data can be collected automatically and remotely using DeltaLINK-Cloud via a modem gateway.
Alternatively, data can be collected manually on-site by laptop via USB/ RS232.
Up to 7 GP2 loggers can be networked to create efficient and flexible monitoring and control systems. Networked GP2s share communications and power via an M12 cabling network.
Applications:
• Demanding research projects
• Environmental monitoring
• Irrigation control
• PID control
• Soil moisture recording – simple connection to Profile Probes
