HOBOnet T11 Soil Moisture/Temp Sensor

Jika anda berminat untuk membeli alat HOBOnet T11 Soil Moisture/Temp Sensor yang disediakan oleh Global Intan Teknindo, silahkan anda langsung hubungi kami melalui :

PT. Global Intan Teknindo

Deskripsi

Overview

Sensor nirkabel yang bekerja dengan sistem HOBOnet untuk tidak hanya memberikan pengukuran kelembaban tanah tingkat lanjut (kadar air volumetrik) dengan akurasi dan presisi yang lebih baik, tetapi juga mengukur suhu tanah dan konduktivitas listrik. Didesain untuk tahan terhadap kondisi lingkungan yang keras, sensor yang tahan lama ini dapat bertahan hingga 10 tahun, sehingga Anda dapat meninggalkannya di lapangan dalam waktu yang lama. Ujung probe baja tahan karat yang diasah memudahkan pemasangan, bahkan di tanah yang keras, dan peningkatan volume pengaruh memberikan hasil yang lebih akurat. HOBOnet T11 didukung oleh lebih dari 20 tahun penelitian kelembaban tanah dan dilengkapi dengan teknologi kapasitansi frekuensi 70MHz yang menjadi ciri khasnya, yang meminimalkan salinitas dan efek tekstur.

Features

Sensor Features

  • Soil moisture (volumetric water content) and soil temperature measurements with one device
  • Sensor lasts up to 10 years in the field
  • Largest volume of influence (1010 mL) relative to sensor size, resulting in more accurate soil moisture measurements
  • Easy installation with sharpened stainless-steel probes that are more resistant to damage/deterioration
  • Less sensor-to-sensor variability

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

Soil Moisture: Volumetric Water Content (VWC)
Measurement Range*0.00 to 0.70 m³/m³ in mineral soils
Accuracy±0.030 m³/m³ (±3%) typical from 0 to 50°C (32 to 122°F); ±0.020 m³/m³ (±2%) with soil specific calibration
Resolution0.001 m³/m³
Dielectric Measurement Frequency70 MHz
Temperature**
Measurement Range-40 to 60°C (-40 to 140°F)
Accuracy±1.0°C (1.8°F) from -40 to 0°C (-40 to 32°F) ±0.5°C (0.9°F) from 0 to 60°C (32 to 140°F)
Resolution0.1°C (0.18°F)
Wireless Mote
Operating Temperature RangeSensor: -40 to 60°C (-40 to 140°F) Mote: -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-T11-900: 904–924 MHz RXW-T11-868: 866.5 MHz RXW-T11-921: 921 MHz RXW-T11-922: 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 Channels3
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 Mounting and Positioning the Mote), operation outside this range will reduce the battery service life With lithium batteries: 1 year, typical use
Memory16 MB
DimensionsSensor: 7.47 x 9.4 x 2.39 cm (2.94 x 3.7 x 0.94 inches) Sensor needle length: 5.4 cm (2.13 inches) Sensor needle diameter: 0.32 cm (0.13 inches) 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-T11-xxx sensor and cable: 245 g (8.64 oz) Mote: 223 g (7.87 oz)
MaterialsSensor: ASA plastic body with polyurethane epoxy filling and stainless steel pins Cable: PVC, UV resistant and rodent repellent Mote: PCPBT, silicone rubber seal
Environmental RatingMote: IP67, NEMA 6
Compliance Marks 
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FCC Logo
 RXW-T11-900
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 RXW-T11-868
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Taiwan NCC Mark
 RXW-T11-921
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Australia/New Zealand General Compliance mark
 RXW-T11-922

* The sensor data can be post-calibrated if necessary (e.g. the sensor is used in non-mineral soil types or higher than standard accuracy is required). Users can apply a calibration equation to the data exported from HOBOlink. The VWC range will depend on the calibration equation.

** Temperature measurement, for applicable sensors, may not be accurate if sensor is not fully immersed in medium of interest, due to longer equilibration time.

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