Updated:2023-02-15
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Increased volume of influence (1010 mL)
Easy installation with borehole installation tool (minimizes air gaps for cleaning readings)
Dependable, long-life volumetric soil moisture sensor
Reduced sensor-to-sensor variability
3-year long-life guarantee
Check installation or troubleshoot with the ZSC Bluetooth sensor interface
Repeatability can be checked with an accuracy verification standard
Robust, epoxy body for tough field conditions
Minimizes salinity and textural effects by using 70 MHz frequency capacitance technology
Steel needles cut through the soil for better soil-sensor contact
Easy-to-use SDI-12 communication for non-METER data loggers
Ferrite core eliminates cable noise
Volumetric Water Content(VWC) | Range |
Mineral Soil Calibration:0.00-0.70 m³/m³ Soilless Media Calibration:0.0-1.0 m³/m³ Apparent Dielectric Permittivity (εa):1(air)to 80(water) NOTE:TheVWC range is dependent on the media the sensor is calibrated to.Acustomcalibration will accommodate the necessary ranges for most substrates. |
Resolution | 0.0010 m³/m³ | |
Accuracy |
Generic Calibration: ±0.03 m³/m³ (±3.00% VWC) typical in mineral soils that have solution EC <8,000 μS/cm Medium Specific Calibration: +0.01-0.02 m³/m³ in any porous medium Apparent Dielectric Permittivity (εa): 1–40 (soil range) , ±1 εa (unitless) 40–80, 15% of measurement |
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Measurement Specifications | Dielectric Measurement Frequency | 7MHz |
Measurement Volume | See comparison article | |
Temperature |
Range:-40 to +60°C Resolution:0.1°C Accuracy:±1.0°C from - 40 to 0°C ±0.5°C from 0 to + 60°C NOTE:Temperature measurement. for applicable sensors, may not be accurate ifsensoris not fully immersed in the medium of interest, due to longer equilibration time. |
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Communication Specifications | Output | DDI serial or SDI-12 communication protocol |
Data Logger Compatibility | METERZL6,EM60,and Em50 data loggers or any data acquisition system capable of 4.0-to 15-VDC power and serial or SDI-12 communication | |
Physical Specifications | Dimensions |
Length:9.4 cm(3.70in) Width:2.4 cm (0.95in) Height: 7.5 cm (2.95 in) |
Probe Length | 5.5 cm (2.17 in) | |
Operating Temperature Range |
Minimum:-40.00℃ Typical: NA Maximum:60.00°C NOTE:Sensors may be used at higher temperatures under certain conditions:contact Customer Support for assistance. |
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Cable Length |
5 m(standard) 75 m(maximum custom cable length) NOTE:Contact Customer Support if a nonstandard cable lengthis needed. |
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Cable Diameter | 0.165 +0.004(4.20+0.10mm) with minimum jacket of 0.030(0.760 mm) | |
Connector Types | 3.5-mm stereo plug connector or stripped and tinned wires | |
Stereo Plug Connector Diameter | 3.5 mm | |
Conductor Gauge | 22-AWG/24-AWG drain wire | |
Electrical and Timing Characteristics | Supply Voltage (VCC to GND) |
Minimum:4.0VDC Typical: NA Maximum:15.0 VDC |
Digital Input Voltage(Logic High) |
Minimum:2.8 V Typical:3.6 V Maximum:5.0 V |
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Digital Input Voltage (Logic Low) |
Minimum: -0.3 V Typical: 0.0 V Maximum: 0.8 V |
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Digital Output Voltage(Logic High) |
Minimum: NA Typical: 3.6 V Maximum: NA |
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Power Line Slew Rate |
Minimum: 1.0 V/ms Typical: NA Maximum: NA |
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Current Drain (During 25-ms Measurement) |
Minimum: 3.0 mA Typical: 3.6 mA Maximum: 16.0 mA |
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Current Drain (While Asleep) |
Minimum: NA Typical: 0.0 mA Maximum: NA |
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Power Up Time(DDI Serial) |
Minimum: 80 ms Typical: NA Maximum: 100 ms |
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Power Up Time(SDI-12) |
Minimum: NA Typical: 245 ms Maximum: NA |
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Power Up Time(SDI-12, DDI Serial Disabled) |
Minimum: 145 ms Typical: 155 ms Maximum: 165 ms |
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Measurement Duration |
Minimum: 25 ms Typical: NA Maximum: 150 ms |
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Other | Compliance |
Manufactured under ISO 9001:2015 EM ISO/IEC 17050:2010 (CE Mark) 2014/30/EU and 2011/65/EU EN61326-1:2013 and EN55022/CISPR 22 |
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