EP100G-L: Sub-surface soil moisture probes

EP100G-L: Sub-surface soil moisture probes

Soil sensor for continuous measurement of soil moisture and temperature along a vertical profile. With sensing depths from 40 to 160 cm, it provides root-zone insights beyond surface measurements – supporting optimized irrigation and agrometeorological monitoring.
Get a Quote or Consultation

EnviroPro sensitivity (per probe) as a function of sampled volume

  • EP100GL-04 – EnviroPro 40 cm (4 sensors): 6.4 litres total soil volume detected
  • EP100GL-08 – EnviroPro 80 cm (8 sensors): 12.8 litres total soil volume detected
  • EP100GL-12 – EnviroPro 120 cm (12 sensors): 19.2 litres total soil volume detected
  • EP100GL-16 – EnviroPro 160 cm (16 sensors): 25.6 litres total soil volume detected

Measurement characteristics
Moisture resolution 0.01%
Salinity resolution 0.001 dS/m
Temperature resolution 0.01 °C
Moisture accuracy +/- 2% @ 0% VWC to 50% VWC (*with respect to dielectric)
Useable salinity range 0 to 6 dS/m* (*upper limit of non-contact capacitance sensors.)
Salinity accuracy +/- 5% @ 0-4 dS/m at 10%-30% VWC
Temperature accuracy +/- 1 °C @ 25 °C
Units of measure
– Volumetric Water Content VWC%
– Salinity dS/m
– Temperature °C or °F
– Interface SDI-12 version 1.3
Operating temperature range -20 °C to 60 °C

Electrical characteristics (recommended voltage range 5.6 to 16 VDC)

EnviroPro
EP100GL-0440 cm (4 sensors)

EnviroPro
EP100GL-0880 cm (8 sensors)
EnviroPro
EP100GL-12120 cm (12 sensors)
EnviroPro
EP100GL-16160 cm (16 sensors)
Sleep current 0.45 mA max 0.90 mA max 1.35 mA max 1.80 mA max
Idle current 7 mA max 14 mA max 21 mA max 28 mA max
Active current (not sampling) 32 mA max 39 mA max 46 mA max 53 mA max
Active current (sampling) 72 mA max 79 mA max 86 mA max 93 mA max
Active time / sampling time** 380 ms 760 ms 1140 ms 1520 ms
** measurement sampling time occurs within the active time period
Diameter 33.5mm +/-0.2mm
Field of influence 55mm from wall of probe
Cable length 5m

*EC upgradable – ALL probe models utilise salinity compensation techniques for greater accuracy, but only pro models can output salinity metrics. Standard models can be upgraded to enable salinity metrics pre or post purchase and pre or post installation with an upgrade key.

Explore compatible products for your application.

More products from this category

Discover additional products from this category that complement your application. Browse the full range to find suitable solutions for your specific requirements.
SPA-2 complete product set with installation components

SPA-2

Analyzer for snowpack properties and continuous monitoring
Learn more
IDS-20 complete sensor installation in a neutral perspective view

IDS-20

IDS 20 ice detection sensor measures icing, freezing rain and ice thickness using impedance analysis. Integrates meteorological data such as temperature and humidity for plausibility checks to improve reliability of ice detection.
Learn more
SND complete outdoor installation in a neutral perspective

SND

Acoustic sensor for snow drift and wind measurement
Learn more
SMA-2 complete outdoor installation in a wide perspective

SMA-2

Analyzer for snowmelt processes and water run-off
Learn more
Reliable monitoring at global scale

Built on data. Proven worldwide.

KISTERS provides reliable monitoring solutions for water, weather, and environmental data – trusted by organizations around the world.
7.000+

Monitoring stations

Monitoring stations collect hydrological, meteorological, and environmental data across the globe.
14

KISTERS subsidiaries

Supporting customers across Europe, North America, Latin America, China, Australia, and New Zealand.
120+

Countries

Government agencies, research institutes, and utilities rely on KISTERS monitoring solutions in more than 120 countries.
50.000+

Connected sensors

Connected sensors measure water levels, rainfall, flow, and environmental parameters across intelligent monitoring networks.

“HailSens represents the culmination of years of dedicated research. As the only hail sensor that seamlessly integrates with hailpad data – the gold standard for scientists worldwide.”

Edgar Wetzel from KISTERS in a portrait photo
Edgar Wetzel
Global Head of Product Management Instrumentation HydroMet
Contact us

We’d love to hear from you.

Our friendly team is always here to talk.
Request product information

Fill out the form and our experts will get back to you shortly.

Product (Global)
Your data is safe with us. We will never share your information.
Logotipo KISTERS
Products enquiry
You are requesting information about:
EP100G-L probe with attached cable in a neutral front view
EP100G-L – Sub-surface soil moisture probes
Sub-surface soil moisture sensor to profile root zone

Sample more soil

EnviroPro® sensors are uniquely designed to have a much larger field of influence than other capacitance probes, providing more meaningful measurements of the local soil.

Compensated measurements

All EnviroPro® sensor models compensate salinity and moisture measurements for variations in temperature, as well as compensating moisture measurements for salinity variations. Without this compensation, the presence of salinity in the soil can cause critical over reporting of moisture content by capacitance probes.

Designed to last

EnviroPro® soil probes are long-life instruments that are fully encapsulated to provide maximum immunity to environmental degradation.

Maintenance-free

Each probe is individually calibrated in the factory, so they never need to be re-calibrated in the field.

Easy installation and removal

EnviroPro® installation kits used with recommended bentonite slurry make both install and removal of probes quick and easy.

Trusted by experts worldwide
120+

Countrys

500+

Organizations

60+
Years of
Experience
ISO

Certified

Request a callback
Leave your contact details and our team will call you back.
Callback (Global)
Your data is safe with us. We will never share your information.
KISTERS logo