Delta-T Devices Ltd.

- Model GP1 - General Purpose Irrigation Data Logger


GP1 Data Logger / Irrigation Monitor; Monitor soil moisture and other key growing conditions, use data to optimise irrigation, directly control irrigation using onboard relay. With the GP1 Data Logger it is possible to optimise or control irrigation, with measurable water savings of up to 60% achievable without reductions in yield or decline in quality. Control irrigation using combined sensor inputs – soil water, temperature, RH, rainfall, volume of water applied - with or without clock inputs.


Benefits from optimising crop irrigation can include:

  • a reduction in water use
  • applying less fertiliser – reduced run-off & environmental impact
  • lower energy costs for pumping water
  • compliance with national and international regulations
  • affect plant growth and development – improved quality
  • a saving in labour costs (e.g. less pruning)
  • increased profits

Compatible with Delta-T's FREE online data viewing and sharing service - 'DeltaLINK-Cloud'

DeltaLINK-Cloud is a free online data viewing and sharing services for Delta-T Devices data loggers. Connect, upload, then monitor, manage and share your sensor data with speed and ease.

  • FREE service
  • Remote data monitoring
  • Share data and collaborate
  • Automatic upload
  • Mobile, tablet and PC compatible
  • Flexible charting and reporting
  • Smart SIM card provided
  • Secure and encrypted
  • Multi-language (French, German, Spanish, Chinese)

More info on DeltaLINK-Cloud Here: (


Brief Specifications

  • Voltage range: -0.2 to +2.7V differential
  • Accuracy [1]: ± 0.05% ± 1.6mV
  • Resolution: 0.1mV
  • Temperatures: ± 0.13°C
  • Pulse counters: 1 x 50Hz, 1 x 33kHz max
  • Relay output:
  • Sensor excitation: Switched batt. 5 to 9V, 120mA max or precision 5V ref, 50mA max
  • Reading storage: > 600,000 readings, non-volatile
  • Connections: 4 cable glands
  • 5-way RS232 / external power connector
  • Environmental: Waterproof (IP67)
  • -20 to +60°C with lithium battery option
  • Size, weight: 140 x 105 x 45mm, 280g
  • Battery type, life: 9V 6LR61 (PP3), ~1 year with alkaline, ~3 years with lithium battery option

Customer reviews

No reviews were found for Delta-T - Model GP1 - General Purpose Irrigation Data Logger. Be the first to review!