Language Brochures
ICT Australian Website
Sap Flow Tool
ICT Arabic Website - العربية
Japanese Brochures - 日本語
Spanish Brochures - Español
Portuguese Brochures - Português
Chinese Brochures - 中文
Korean Brochures - 한국의
Optimal logging solution: Soil Moisture Meter
10HS Soil Moisture Sensor
Measures the dielectric constant of the soil in order to find its volumetric water content (VWC)The 10HS is used to measure volumetric moisture content of soils and other material for scientific research and agricultural applications.
The 10HS measures volumetric water content via the dielectric constant of the soil using capacitance technology. The sensor uses a 70 MHz frequency, which minimises salinity and textural effects, making it an ideal sensor in agricultural and standard scientific projects.
More Details
10HS is an accurate, low cost sensor with 2%VWC accuracy following soil-specific in situ calibration and 0.1%VWC resolution.
The 10HS is ideally supported by the soil moisture meter (SMM), a stand-alone logging instrument with wireless option available from ICT International. With the SMM, 10HS sensors can be individually calibrated for maximum accuracy.
- The SMM can support up to 10 x 10HS sensors.
- For complete monitoring solutions, the 10HS is used in combination with tensiometers for soil water potential, ICTO2 soil oxygen sensor, or the ICT International automatic weather station.
What is Capacitance?
The capacitance technique determines the dielectric permittivity of a medium by measuring the charge time of a capacitor, which uses that medium as a dielectric. The capacitance sensor forms a pair of electrodes and the soil acts as a dielectric. The capacitor charge time is a linear function of the dielectric permittivity of the soil.Specifications
Sensor Specifications
| Measurement | |
| Range: | Apparent dielectric permittivity (εa) : 1 (air) to 50 Soil volumetric water content : 0 – 0.57 m3/m3 (0 -57% VWC) |
| Accuracy: | (εa) : ± 0.5 from (εa) of 2 to 10, ±2.5 from (εa) of 10 to 50 (VWC) VWC: Using standard calibration equation: ± 0.05 m3/m3 (± 5% VWC) typical in mineral soils. Using soil site specific calibration, ± 0.02 m3/m3 (± 2% VWC) |
| Resolution: | (εa): 0.1 from ea of 1 to 30, 0.2 from (εa) of 30 to 50 VWC: 0.0008 m3/m3 (0.08% VWC) in mineral soils from 0 to 0.50 m3/m3 (0-50% VWC) |
| Time | 10 ms (milliseconds) |
| Power | |
| Power requirements: | 3VDC @ 12mA to 15 VDC @ 15 mA
On board voltage regulator allows 10HS sensor to be used with any excitation voltage above 3V |
| Operating Conditions | |
| Operating Temperature: | 0 – 50 °C |
| Interface | |
| Frequency: | 70 MHz |
| Output: | 300 (dry soil) – 1250 (saturated) mV, independent of excitation voltage |
| Mechanical | |
| Connector Types | 3.5 mm "stereo" plug or stripped and tinned lead wires |
| Cable Length | 5 m standard |
| Dimensions | Dimensions 14.5 x 3.3 x 0.7 cm |
Meter Specifications
| Instrument Logging | |
| Instrument Specification Brochure | |
| Analogue Channels | 5 double ended or 10 single ended |
| Resolution | 0.00001V—24-Bit |
| Accuracy | 0.001V |
| Minimum Logging Interval | 1 second |
| Delayed Start | Suspend Logging, Customised Intervals |
| Sampling Frequency | 10Hz |
| Data | |
| Communications | USB, Wireless Radio Frequency 2.4 GHz |
| Data Storage | MicroSD Card, SD, SDHC & SDXC Compatible (FAT32 format) |
| Software Compatibility | Windows XP, Vista and Windows 7 |
| Data Compatibility | FAT32 compatible for direct exchange of SD card with any Windows PC |
| Data File Format | Comma Separated Values (CSV) for compatibility with all software programs |
| Memory Capacity | 2GB expandable to 64GB |
| Operating Conditions | |
| Temperature Range | -40 ° C to +80 ° C |
| R/H Range | 0-100% |
| Upgradable | User Upgradeable firmware using USB boot strap loader function |
| Power | |
| Power supply | 12V DC 2-wire non polarized bus |
| Power Consumption | 20 mA |
| Internal Battery Monitoring | Logging internal battery voltage & charging current |
| Charging Rate | Automatic variable rate of charging to maximise solar panel charging current on full sun days and or under low light cloudy conditions Variable current 10 mA to 200 mA |
Image Gallery
|
|
Features
10HS Sensor:
- High resolution allows daily or hourly tracking of water use
- Voltage output proportional to water content
- Low-cost dielectric water content sensor
- Low sensitivity to salt and temperature
- Very low power requirement
Optimal logging solution:
Soil Moisture Meter
Soil Moisture Meter
Logging:
- Stand-alone logging
- MicroSD expandable memory
- Wireless connectivity and data transfer
- Simple conversion and scripting
- Flexible sensor calibration, look-up tables, and user scripts
- 24-Bit resolution
- IP68 rated water proof enclosure
- Free Windows utility configuration software
- Optional wireless logging via MCC1
- Field: solar power and 12V battery
- Lab: main power supply
- Internal Lithium-Polymer battery
- Internal voltage regulation
- Optical isolation lightening protection
Applications
- Irrigation scheduling
- Vadose zone monitoring
- Plant-soil-water interaction studies
Links
ICT International has provided solutions for soil, plant and environmental monitoring since 1982.
© 2003 - , ICT International
© 2003 - , ICT International