RXW-SMC-868 - HOBOnet Soil Moisture EC5 Sensor
The HOBOnet Wireless Soil Moisture Sensor integrates the field-proven ECH2O™ EC5 Sensor and provides readings directly in volumetric water content. The sensor's high-frequency design minimizes sensiti..
- Brands ONSET
- Product Code: RXW-SMC-xxx
- Availability: In Stock
Tags: HOBOnet sensor, RX3000, soil moisture, low soil volume
RXW-SMC-868 - HOBOnet Soil Moisture EC5 Sensor
The HOBOnet Wireless Soil Moisture Sensor integrates the field-proven ECH2O™ EC5 Sensor and provides readings directly in volumetric water content. The sensor's high-frequency design minimizes sensitivity to salinity and textural effects and gives it a wide measurement range. HOBOnet Wireless Sensors communicate data directly to the RX3000 weather station or pass data through other wireless sensors back to the central station. They are preconfigured and ready to deploy, and data is accessed through HOBOlink, Onset’s innovative cloud-based software platform.
Highlighted Features
Sensor Features
- ±3% accuracy in typical soil conditions, and ±2% accuracy with soil-specific calibration
- Measures a 0.3-litre volume of soil for taking readings at a specific depth or in a container
- High-frequency (70 MHz) circuit provides good accuracy even in high-salinity and sandy soils
Wireless Features
- 868 MHz wireless mesh self-healing technology
- 450 to 600 meter (1,500 to 2,000 feet) wireless range and up to five hops
- Up to 50 wireless sensors per RX3000
- Simple button-push to join the HOBOnet wireless network
- Onboard memory to ensure no data loss
- Powered by rechargeable AA batteries and built-in solar panel
- In what environment does this sensor operate?
- This sensor operates in an outdoor environment.
What measurements does this sensor support?
The RXW-SMC-xxx sensor supports the following measurement: Soil Moisture
For more information visit Onset or check out their YouTube channel
A complete system requires at least one HOBO RX3000 Remote Monitoring Station, a HOBOnet Wireless Manager (RXMOD-RXW-xxx), and a HOBOnet Wireless Sensor. HOBOnet Wireless Repeaters (RX-RPTR-xxx) can be added to extend the range. Still, think you might need some assistance in choosing the best solution?
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| Sensor | |
| Extended Range | -0.401 to 2.574 m³/m³ |
| Sensor Accuracy | ±0.031 m³/m³ (±3.1%) typical 0 to 50°C (32° to 122°F) for mineral soils up to 8 dS/m and ±0.020 m³/m³ (±2%) with soil specific calibration; see Notes 2 and 3 |
| Sensor Frequency | 70 MHz |
| Sensor Measurement Range | n soil: 0 to 0.550 m³/m³ (volumetric water content) |
| Sensor Operating Temperature Range | 0° to 50°C (32° to 122°F). Although the sensor probe and cable can safely operate at below-freezing temperatures (to -40°C/F), the soil moisture data collected at these extreme temperatures are outside of the sensor's accurate measurement range. |
| Sensor Resolution | 0.0007 m³/m³ (0.07%) |
| Volume of Influence | 0.3 litres (10.14 oz) |
| Wireless Mote | |
| Battery Life | With NiMH batteries: Typical 3–5 years when operated in the temperature range -20° to 40°C (-4°F to 104°F) and positioned toward the sun (see Deployment and Mounting), operation outside this range will reduce the battery service life With lithium batteries: 1 year, typical use |
| Data Rate | Up to 250 kbps, non-adjustable |
| Duty Cycle | <1% |
| Maximum Number of Motes | 50 motes per one RX Wireless Sensor Network |
| Modulation Employed | OQPSK (Offset Quadrature Phase Shift Keying) |
| Power Source | Two AA 1.2 V rechargeable NiMH batteries powered by built-in solar panel or two AA 1.5 V lithium batteries for operating conditions of -40 to 70°C (-40 to 158°F) |
| Radio Operating Frequencies | RXW-SMC-900: 904–924 MHz RXW-SMC-868: 866.5 MHz RXW-SMC-922: 916–924 MHz |
| Radio Power | 12.6 mW (+11 dBm) non-adjustable |
| Transmission Range | Reliable connection to 457.2 m (1,500 ft) line of sight at 1.8 m (6 ft) high Reliable connection to 609.6 m (2,000 ft) line of sight at 3 m (10 ft) high |
| Wireless Data Standard | IEEE 802.15.4 |
| Wireless Mote Dimensions | Cable length: 5 m (16.4 ft) Mote: 16.2 x 8.59 x 4.14 cm (6.38 x 3.38 x 1.63 inches) |
| Wireless Mote Environmental Rating | Mote: IP67, NEMA 6 |
| Wireless Mote Materials | Sensor: Weatherproof Mote: PCPBT, silicone rubber seal |
| Wireless Mote Memory | 16 MB |
| Wireless Mote Operating Range | Temperature: -25° to 60°C (-13° to 140°F) with rechargeable batteries -40 to 70°C (-40 to 158°F) with lithium batteries |
| Wireless Mote Weight | Mote: 223 g (7.87 oz) |
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