METER ENVIRONMENT TEROS 10 Soil Moisture Sensor Instruction Manual
- June 3, 2024
- METER ENVIRONMENT
Table of Contents
TECH NOTE: TEROS 10 VS. GS1
Instruction Manual
TEROS 10 Soil Moisture Sensor
The TEROS 10 sensor is an improved
version of our GS1 sensor. We have eliminated cable noise, and the pins are
sharper on the TEROS 10 to improve soil contact during installation.
If you’d like to replace your GS1 sensors with TEROS 10 sensors, it will be
best to do an updated custom
calibration with the new TEROS 10 sensors, and
we always suggest custom calibrations to get the best accuracy out of any soil
moisture sensor. Custom calibrations do not take long and only require a scale
and oven.
If you do not have the ability to perform a custom soils calibration, we
suggest that you update your factory calibration from the GS1 mineral soils
calibration to the TEROS 10 mineral soils calibration. Below are the mineral
soil factory calibrations for the GS1 and TEROS 10. Please see the
manual
for potting soils factory calibrations.
- GS1 mineral soils factory calibration: (m³/m³) = 0.000362 * RAW 0.554
- TEROS 10 mineral soils factory calibration:
Θ= 1.895 X 10-¹⁰ RAW³ – 1.222 X 10-⁶ RAW² + 2.855 X 10-³ * RAW 2.154
If you do not have the ability to change the calibration, the TEROS 10 generally works as a drop-in replacement for the GS1. The TEROS 10 VWC readings will read slightly high at low water contents, and slightly low at high water contents when using the TEROS 10 calibration.