ThingsLog Low Power Agri Data Logger

Precision Farming with ThingsLog Agri Loggers

The ThingsLog Agri Data Logger is engineered specifically for agricultural environments: outdoor exposure to sun, rain, dust, and frost; battery-powered operation for an entire growing season or longer; wireless communication to cloud over LoRa or cellular networks. Unlike general-purpose industrial data loggers adapted for outdoor use, the Agri Logger comes pre-configured for common agricultural sensor types — soil moisture, temperature, humidity — with agricultural-specific alarm logic and the ThingsLog Agriculture mobile app designed for farmers rather than engineers. Setup takes minutes, not days.

Soil Science and Smart Irrigation

Capacitive vs Tensiometric Soil Moisture

ThingsLog agri loggers support both capacitive (volumetric water content) and tensiometric (soil water potential or matric potential) soil moisture sensors. For irrigation management, matric potential — measured in centibars or kPa — is the most agronomically meaningful indicator: it shows how hard the plant roots must work to extract water from the soil, directly indicating plant water stress. By irrigating based on matric potential thresholds rather than fixed schedules, farmers can reduce water application by 20-40% while maintaining or improving crop yield.

Multi-Depth Soil Monitoring

The logger can connect sensors at multiple soil depths simultaneously — typically 20cm, 40cm, and 60cm. Monitoring the wetting front at different depths confirms that irrigation water is reaching the entire root zone without wasteful deep percolation into the subsoil. When the deepest sensor shows wetting while the shallowest remains relatively dry, it indicates preferential flow paths or soil layering that requires agronomic intervention. This level of insight is impossible to achieve with surface observations alone.

Weather Station Integration

The optional meteo station extension connects wind speed and direction (cup anemometer or ultrasonic), rain gauge (tipping bucket), and solar radiation (pyranometer) to the same logger. Combined with air temperature and humidity and barometric pressure sensors, this creates a complete agricultural weather station — all transmitted via a single device with a single battery and a single wireless connection. Calculated values derived from the raw measurements include evapotranspiration (ET0 via the Penman-Monteith equation), growing degree days (GDD), and chill hour accumulation — all agronomically critical metrics for crop management and phenology prediction.

Frost Alert and Crop Protection

A single unexpected frost event can destroy an entire season’s crop. ThingsLog agri loggers monitor canopy temperature and air temperature with configurable frost alerts sent directly to farmers’ mobile phones. When temperature approaches the frost threshold, the system can trigger irrigation (used as frost protection for delicate crops such as vines and fruit trees), activate heating systems in polytunnels, or simply call the farmer in time to take manual protective action. The logger’s low-latency alert delivery — typically under two minutes from measurement to phone notification — provides the response time that crop protection demands.

Season-Long Battery Life

Agricultural deployments have a specific requirement not shared by utility metering: sensors must operate through an entire growing season — typically 4 to 8 months — without battery change, often in remote locations accessible only by tractor or on foot. The ThingsLog agri logger achieves this by combining ultra-low-power sleep modes between measurements, efficient LoRa or NB-IoT transmission, and a large-capacity 3.6V lithium battery designed for wide temperature range operation (including below-zero winter temperatures that significantly reduce the capacity of alkaline batteries). In standard agricultural monitoring mode with hourly readings transmitted via LoRa, battery life exceeds one full growing season — allowing deployment at the start of the season and retrieval at harvest without any mid-season site visit.