Delta-T Devices has produced high quality data loggers for over 30 years.
We have a wealth of experience in the design of accurate, reliable, low-powered, weatherproof loggers. Our data loggers are versatile and cover applications across scientific research, environmental monitoring, horticulture and precision irrigation.
For those wishing to securely view, manage, and share their Delta-T Devices logger data online, we offer the DeltaLINK-Cloud platform. This sophisticated cloud-based solution enables users to remotely monitor live data on mobile devices (via customisable animated widgets) – and easily share access to data with project collaborators. It also provides a remote control connection between DeltaLINK software and logger – allowing the user to program the data logger and modify program settings at distance via the internet.
Our Data Logger range includes:
GP2 Data Logger
The GP2 Data Logger and Controller easy to use, versatile, rugged and reliable. It is compatible with most sensor types and is ideal for demanding field work. The GP2 has 12 differential channels, powerful controller functionality and has SDI-12 capability. Sophisticated programs can be easily created via a simple scripting editor.
Data Logger – DL6
The DL6 Data Logger is optimised for use with Delta-T soil moisture sensors. It can log Profile Probes or single point soil moisture sensors (ML3, SM150T). The DL6 can also accept a raingauge and soil temperature probe input.
GP1 Data Logger
The GP1 Data Logger is ideal for logging Delta-T soil moisture sensors: up to 2 ThetaProbes or 4 SM150Ts. The GP1 can also log readings from the WET Sensor, and is compatible with most other analog environmental sensors. Versatile control relay options are another key feature of the GP1 data logger.
DeltaLINK-Cloud – online data sharing and management
DeltaLINK-Cloud is a powerful online service for use with Delta-T data loggers and weather stations. It offers secure cloud-based connectivity, data management, and automatic data retrieval. Users can easily upload, store, view, and share their data.
Connection is made using a Delta-T Devices modem gateway. Reports can contain charts for data from one or more loggers. Charting is customisable and can be saved in report form for future use – which can be shared via a unique system-generated URL link.
- Online data viewing and management platform
- Share data and collaborate
|Differential analog channels||Additional input channels||Nominal analogue range||Number of readings||Relay out||PR2 Profile Probe connection|
|GP1||2||2 temperature or 2 additional SM150T Sensors  2 counters (33 kHz and 50 Hz 1 WET Sensor||0 – 2.5 V||600K||1||N/A|
|DL6||6||1 Temperature 1 Counter||0 – 1.15 V||16K||1||1|
|GP2||12||4 Digital counters – 2 fast & 2 slow 1 x Delta-T WET Sensor Channel Serial input channel: 62 SDI-12 sensors or a single WET Sensor||170 mV to 2.7 V 1.4 V to ±1.5 V ± 185 mV ± 23 mV (with optional auto ranging)||2500K||2 Standard (6 with Relay Expansion Module)||2 x PR2/6 or 3 x PR2/4 with appropriate lid.|
|Up to 50 x PR2/6 or 62 x PR2/4 with SDI-12|
 Temperature channels provide only single-ended inputs so should not be used with long cables or in noisy environments when used with soil moisture sensors. The accuracy figures quoted for GP1 soil moisture readings do not apply to these resistance channels when configured as soil moisture inputs.