Soil volumetric water content and temperature measurement probe / HD3910 series

Added to bookmarks
Bookmarks list

Bookmark has been removed
Bookmarks list

You can't add any more bookmarks

By registering as a member, you can increase the number of bookmarks you can save and organize them with labels.
Free membership registration

Senseka (formerly Delta Ohm)

last updated：Feb 07, 2025

Official site

Capacitive sensor with low soil invasiveness, high environmental resistance due to resin-sealed housing.

- Two probes are prepared for measuring soil volumetric water content (VWC): the 2-electrode HD3910.1 and the 3-electrode HD3910.2. - Based on the principle of capacitance measurement, it allows for rapid and minimally invasive measurements in agricultural land. - The 3-electrode probe HD3910.2 is particularly suitable for measurements in small sample volumes (such as potted plants). - This probe is factory calibrated, and no additional calibration by the end user is required. - The circuit board is protected by a plastic housing and sealed with epoxy resin, enabling reliable measurements even under harsh environmental conditions. - The RS485 Modbus-RTU output and SDI-12 output versions can be connected to data loggers with respective digital inputs from other manufacturers. - The analog output version is equipped with two voltage outputs of 0.5–3V, 0–2.5V, 0–5V, or 0–10V.

Related Link - https://deltaohm.jp/environment-weather-instrument…

Inquire About This Product

basic information

■Volumetric Water Content Measurement Principle: Capacitance Measurement Range: 0–60% VWC Resolution: 0.1% VWC Accuracy (at 23℃): ±3%, for 0–50% VWC (standard mineral soil, EC < 5 mS/cm) Measurement Volume: φ100mm × H150mm (HD3910.1) φ80mm × H110mm (HD3910.2) Sensor Operating Temperature: -40 to +60℃ ■Temperature Sensor: NTC 10KΩ (at 25℃) Measurement Range: -40 to +60℃ Resolution: 0.1℃ Accuracy: ±0.5℃ Long-term Stability: 0.1℃/year ■Power Supply DC 3.6–30V (HD3910.xA2.x) DC 5–30V (HD3910.x.x and HD3910.xA.x) DC 6–30V (HD3910.xS.x) DC 7–30V (HD3910.xA5.x) DC 12–30V (HD3910.xA10.x) ■Current Consumption HD3910.x.x: Average 2mA, Peak 15mA (at DC12V) HD3910.xA.x: Average 2.5mA, Peak 15mA (at DC12V) HD3910.x5.x: Standby 300μA (at DC12V) During Measurement <15mA (at DC12V)