HOBOnet Soil Moisture 10HS Sensor

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PT. Global Intan Teknindo

Deskripsi

Overview

Mengintegrasikan Sensor ECH2O™ 10HS yang telah terbukti di lapangan dan memberikan pembacaan secara langsung dalam kadar air volumetrik. Probe 10cm mengukur kelembapan tanah pada volume tanah yang lebih besar, sehingga membantu meratakan variabilitas tanah. Desain frekuensi tinggi sensor meminimalkan sensitivitas terhadap salinitas dan efek tekstur, serta memberikan rentang pengukuran yang luas.

Sensor nirkabel HOBOnet mengkomunikasikan data secara langsung ke stasiun HOBO RX3000 atau HOBO MicroRX, atau meneruskan data melalui sensor nirkabel lainnya kembali ke stasiun pusat. Sensor-sensor ini telah dikonfigurasikan sebelumnya dan siap digunakan, dan data diakses melalui HOBOlink, platform perangkat lunak cloud Onset yang inovatif.

Features

Sensor Features

  • ±3% accuracy in typical soil conditions, and ±2% accuracy with soil-specific calibration
  • Measures a large 1-liter volume of soil, providing a more accurate picture of average soil moisture
  • High-frequency (70 MHz) circuit provides good accuracy even in high-salinity and sandy soils.

Wireless Features

  • 900 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 or 336 data channels per HOBO RX station
  • 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

Spesifikasi

RXW-SMC-xxxRXW-SMD-xxx
Measurement RangeIn soil: 0 to 0.550 m³/m³ (volumetric water content)In soil: 0 to 0.570 m³/m³ (volumetric water content)
Extended Range-0.401 to 2.574 m³/m³; see Note 1-0.659 to 0.6026 m³/m³; see Note 1
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±0.033 m³/m³ (±3.3%) typical 0 to 50°C (32° to 122°F) for mineral soils up to 10 dS/m and ±0.020 m³/m³ (±2%) with soil specific calibration; see Notes 4 and 5
Resolution0.0007 m³/m³ (0.07%)0.0008 m³/m³ (0.08%)
Volume of Influence0.3 liters (10.14 oz)1 liter (33.81 oz)
Sensor Frequency70 MHz70 MHz
METER ECH2O Probe Part No.EC-510HS
Sensor Operating Temperature Range0° 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 is outside of the sensor’s accurate measurement 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 is outside of the sensor’s accurate measurement range. Extended temperatures above 50°C (122°F) will decrease mote battery life.
Wireless Mote
Operating Temperature Range-25° to 60°C (-13° to 140°F) with rechargeable batteries -40° to 70°C (-40° to 158°F) with lithium batteries
Radio Power12.6 mW (+11 dBm) non-adjustable
Transmission RangeReliable 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 StandardIEEE 802.15.4
Radio Operating FrequenciesRXW-SMC-900 and RXW-SMD-900: 904–924 MHz RXW-SMC-868 and RXW-SMD-868: 866.5 MHz RXW-SMC-921 and RXW-SMD-921: 921 MHz RXW-SMC-922 and RXW-SMD-922: 916–924 MHz
Modulation EmployedOQPSK (Offset Quadrature Phase Shift Keying)
Data RateUp to 250 kbps, non-adjustable
Duty Cycle<1%
Maximum Number of MotesUp to 50 wireless sensors or 336 data channels per one HOBO RX station
Logging Rate1 minute to 18 hours
Number of Data Channels2
Battery Type/ Power SourceTwo AA 1.2V 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)
Battery LifeWith 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
Memory16 MB
DimensionsRXW-SMC-xxx soil probe: 89 x 15 x 1.5 mm (3.5 x 0.62 x 0.06 in.) RXW-SMD-xxx soil probe: 160 x 32 x 2 mm (6.5 x 1.25 x 0.08 in.) 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)
WeightRXW-SMC-xxx sensor and cable: 180 grams (6.3 oz) RXW-SMD-xxx sensor and cable: 190 grams (6.7 oz) Mote: 223 g (7.87 oz)
MaterialsSensor: Weatherproof Mote: PCPBT, silicone rubber seal
Environmental RatingMote: IP67, NEMA 6
Compliance Marks 
Image
FCC Logo
 RXW-SMD-900
Image
ce
 RXW-SMD-868
Image
Australia/New Zealand General Compliance mark
 RXW-SMD-922 Taiwan NCC Mark RXW-SMD-921

Note 1:(RXW-SMC-xxx and RXW-SMD-xxx) The sensor is capable of providing readings outside the standard volumetric water content range. This is helpful in diagnosing sensor operation and installation. See the Sensor Operation section for more details.

Note 2: (RXW-SMC-xxx) This is a system level accuracy specification and is comprised of the probe’s accuracy of ±0.03 m³/m³ typical (±0.02 m³/m³ soil specific) plus the mote accuracy of ±0.001 m³/m³ at 25°C (77°F). There are additional temperature accuracy deviations of ±0.003 m³/m³ / °C maximum for the probe across operating temperature environment, typical <0.001 m³/m³ / °C. (The temperature dependence of the mote is negligible.)

Note 3: (RXW-SMC-xxx) Given the nature of the sensor design and sensor operating frequency, the system has inherent susceptibilities to Radio Frequency signals. The accuracy specification when subjected to certain RFI environments, such as those outlined in IEC 61000-4-3 and IEC 61000-4-6, is reduced to 0.061 m³/m³. The system level accuracy will be particularly affected when placed in an electric field of 3 V/m or greater in the 70 MHz range. RFI mitigation practices and physical deployment changes may reduce the systems susceptibility.

Note 4: (RXW-SMD-xxx) This is a system level accuracy specification and is comprised of the probe’s accuracy of ±0.03 m³/m³ typical (±0.02 m³/m³ soil specific) plus the mote accuracy of ±0.003 m³/m³ at 25°C (77°F). There are additional temperature accuracy deviations of ±0.003 m³/m³ / °C maximum for the probe across operating temperature environment, typical <0.001 m³/m³ / °C. (The temperature dependence of the mote is negligible.)

Note 5: (RXW-SMD-xxx): Given the nature of the sensor design and sensor operating frequency, the system has inherent susceptibilities to Radio Frequency signals. The accuracy specification when subjected to certain RFI environments, such as those outlined in IEC 61000-4-3 and IEC 61000-4-6, may be significantly reduced. The system level accuracy will be particularly affected when placed in an electric field of 3 V/m or greater in the 150 KHz to 1000 MHz range. RFI mitigation practices and physical deployment changes may reduce the systems susceptibility, however will yield reduced system accuracy. If deployments are planned in high RFI energy environments, Onset recommends on-site testing to determine system level accuracy.

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