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Monitoring Solutions for Water, Indoor, Outdoor, & Agriculture
Low-cost and fully integrated with Bluetooth wireless data offload, this soil moisture and temperature data logger measures the volumetric water content and temperature of soil using stainless steel needles. Moreover, this is ideal for saving water, improving crop yields, reducing harmful runoff, and protecting ecosystems.
Low-cost and fully integrated with Bluetooth wireless data offload, this soil moisture and temperature data logger measures the volumetric water content and temperature of soil using stainless steel needles. Moreover, this is ideal for saving water, improving crop yields, reducing harmful runoff, and protecting ecosystems.
Features
Applications
A free app redesigned with a new interface to improve the user experience and streamline common tasks. Now faster and easier than ever to configure HOBO MX Series data loggers and manage the collected data. Download the new and improved HOBOconnect app from the Apple App Store or Google Play to your mobile device, or download it from the Onset HOBO website to your Windows computer.
App features
System requirements
Download for free today
| Moisture Sensor | |
| Measurement Range* (select one at configuration) | 0.00 to 0.64 m3/m3 in mineral soils 0 to 0.7 m3/m3 in soilless media Apparent dielectric permittivity: 1 (air) to 80 (water) *The sensor data can be post-calibrated if necessary (e.g. the sensor is used in non-mineral soil types or a higher than standard accuracy is required). Users can apply a calibration equation to the data exported from the app. The VWC range will depend on the calibration equation. |
| Accuracy | ±0.031 m3/m3 typical in mineral soils that have solution EC <8 dS/m ±0.051 m3/m3 typical in soilless media Apparent dielectric permittivity: ±1 εa for the range 1 to 40 (soil range); ±15% for over 40 |
| Resolution | 0.001 m3/m3 Apparent dielectric permittivity: 0.1 εa |
| Dielectric Measurement Frequency | 70 MHz |
| Volume of Influence | 430 mL |
| Percent of Field Capacity (for VWC measurements only) | Range: 0 to 200% Resolution: 0.1% |
| Temperature Sensor | |
| Range | -40 to 212°F (-40 to 100°C), with tip and cable immersion in fresh water up to 122°F (50°C) for one year |
| Accuracy | ±0.45 from -40 to 32°F (±0.25 from -40 to 0°C) ±0.36 from 32 to 158°F (±0.2 from 0 to 70°C) ±0.45 from 158 to 212°F (±0.25 from 70 to 100°C) |
| Resolution | 0.072°F (0.04°C) |
| Drift | <0.018°F (0.01°C) per year |
| Response Time | 3 minutes in air moving 1 m/s; 20 seconds in stirred water 4 minutes in air moving 1 m/s with RS3-B solar radiation shield |
| Data Logger | |
| Operating Range | -13 to 140°F (-25 to 60°C) |
| Radio Power | 1 mW (0 dBm) |
| Transmission Range | Approximately 30.5 m (100 ft) line-of-sight |
| Wireless Data Standard | Bluetooth low energy (Bluetooth smart) |
| Logging Rate | 1 second to 18 hours |
| Modes | Logging: Fixed interval (normal, statistics) or burst Memory: Wrap when full or stop when full Start: Immediate, push button, date and time, or next interval Stop: When memory full, push button, date and time, or after a set logging period |
| Time Accuracy | ±1 minute per month at 32 to 122°F (0 to 50°C) |
| Memory | Capacity: 110,000 measurements, maximum (472 kB) Full memory download time: Approximately 60 seconds; may take longer the further the device is from the logger |
| Materials | Logger: Acetal, silicone gasket, stainless steel screws Soil moisture sensor: ASA plastic body with polyurethane epoxy filling and stainless steel pins Temperature Sensor: Stainless-steel waterproof tip Cable: PVC, UV resistant and rodent repellant (soil moisture sensor cable) |
| Environmental Rating | Logger: -13 to 140°F (-25 to 60°C); weatherproof; NEMA6 and IP67 Soil moisture sensor and cable: -40 to 140°F (-40 to 60°C) Temperature sensor and cable: Immersion in water up to 122°F (50°C) for 1 year |
| Battery | Type: 2/3 AA 3.6 volt lithium, user replaceable Lifetime: 2 years, typical with logging interval of 1 minute and Bluetooth Always On enabled 5 years, typical with logging interval of 1 minute and Bluetooth Always On disabled Faster logging intervals and statistics sampling intervals, burst logging, remaining connected with the app, excessive downloads, and paging may impact battery life |
| Dimensions | Housing: 4.25 x 2 x 0.88" (10.8 x 5.08 x 2.24 cm) Moisture Sensor: 2.95 x 2.02 x 0.95" (7.5 x 5.1 x 2.4 cm) Needle length: 2.13" (5.4 cm) Needle diameter: 0.13" (0.32 cm) Sensor cable length: 6.56' (2 m) Temperature sensor diameter: 0.21" (0.53 cm) |
| Weight | 5.875 lbs (267 g) |
Click on a category to view a selection of compatible accessories with the Onset HOBO MX2307 Soil Moisture and Temperature Data Logger, 70 MHz, -40 to 212°F.
| Moisture Sensor | |
| Measurement Range* (select one at configuration) | 0.00 to 0.64 m3/m3 in mineral soils 0 to 0.7 m3/m3 in soilless media Apparent dielectric permittivity: 1 (air) to 80 (water) *The sensor data can be post-calibrated if necessary (e.g. the sensor is used in non-mineral soil types or a higher than standard accuracy is required). Users can apply a calibration equation to the data exported from the app. The VWC range will depend on the calibration equation. |
| Accuracy | ±0.031 m3/m3 typical in mineral soils that have solution EC <8 dS/m ±0.051 m3/m3 typical in soilless media Apparent dielectric permittivity: ±1 εa for the range 1 to 40 (soil range); ±15% for over 40 |
| Resolution | 0.001 m3/m3 Apparent dielectric permittivity: 0.1 εa |
| Dielectric Measurement Frequency | 70 MHz |
| Volume of Influence | 430 mL |
| Percent of Field Capacity (for VWC measurements only) | Range: 0 to 200% Resolution: 0.1% |
| Temperature Sensor | |
| Range | -40 to 212°F (-40 to 100°C), with tip and cable immersion in fresh water up to 122°F (50°C) for one year |
| Accuracy | ±0.45 from -40 to 32°F (±0.25 from -40 to 0°C) ±0.36 from 32 to 158°F (±0.2 from 0 to 70°C) ±0.45 from 158 to 212°F (±0.25 from 70 to 100°C) |
| Resolution | 0.072°F (0.04°C) |
| Drift | <0.018°F (0.01°C) per year |
| Response Time | 3 minutes in air moving 1 m/s; 20 seconds in stirred water 4 minutes in air moving 1 m/s with RS3-B solar radiation shield |
| Data Logger | |
| Operating Range | -13 to 140°F (-25 to 60°C) |
| Radio Power | 1 mW (0 dBm) |
| Transmission Range | Approximately 30.5 m (100 ft) line-of-sight |
| Wireless Data Standard | Bluetooth low energy (Bluetooth smart) |
| Logging Rate | 1 second to 18 hours |
| Modes | Logging: Fixed interval (normal, statistics) or burst Memory: Wrap when full or stop when full Start: Immediate, push button, date and time, or next interval Stop: When memory full, push button, date and time, or after a set logging period |
| Time Accuracy | ±1 minute per month at 32 to 122°F (0 to 50°C) |
| Memory | Capacity: 110,000 measurements, maximum (472 kB) Full memory download time: Approximately 60 seconds; may take longer the further the device is from the logger |
| Materials | Logger: Acetal, silicone gasket, stainless steel screws Soil moisture sensor: ASA plastic body with polyurethane epoxy filling and stainless steel pins Temperature Sensor: Stainless-steel waterproof tip Cable: PVC, UV resistant and rodent repellant (soil moisture sensor cable) |
| Environmental Rating | Logger: -13 to 140°F (-25 to 60°C); weatherproof; NEMA6 and IP67 Soil moisture sensor and cable: -40 to 140°F (-40 to 60°C) Temperature sensor and cable: Immersion in water up to 122°F (50°C) for 1 year |
| Battery | Type: 2/3 AA 3.6 volt lithium, user replaceable Lifetime: 2 years, typical with logging interval of 1 minute and Bluetooth Always On enabled 5 years, typical with logging interval of 1 minute and Bluetooth Always On disabled Faster logging intervals and statistics sampling intervals, burst logging, remaining connected with the app, excessive downloads, and paging may impact battery life |
| Dimensions | Housing: 4.25 x 2 x 0.88" (10.8 x 5.08 x 2.24 cm) Moisture Sensor: 2.95 x 2.02 x 0.95" (7.5 x 5.1 x 2.4 cm) Needle length: 2.13" (5.4 cm) Needle diameter: 0.13" (0.32 cm) Sensor cable length: 6.56' (2 m) Temperature sensor diameter: 0.21" (0.53 cm) |
| Weight | 5.875 lbs (267 g) |
Click on a category to view a selection of compatible accessories with the Onset HOBO MX2307 Soil Moisture and Temperature Data Logger, 70 MHz, -40 to 212°F.
