Introduction; Specifications - Decagon Devices 5TE Operator's Manual

1. Introduction

Thank you for choosing Decagon's 5TE for measuring
water content, temperature, and EC. This manual is
designed to help you understand the sensor's features and
how to use this device successfully.

Specifications

Range:
Apparent dielectric permittivity (ε
Resolution:
ε ε
: 0.1 (unitless) from 1-20, <0.75
a a
VWC: 0.0008 m
Accuracy:
ε ε
( ): ±1 (unitless) from 1-40 (soil range), ±15% from 40-80
a a
(VWC):
• Using Topp equation: ±0.03 m
in mineral soils that have solution electrical conductiv-
ity < 10 dS/m
• Using medium specific calibration, ±0.01 - 0.02 m
(± 1-2% VWC) in any porous medium
Range: 0-23 dS/m (bulk)
Resolution: 0.01 dS/m from 0 to 7 dS/m, 0.05 dS/m from 7
to 23 dS/m
Accuracy: ±10% from 0 to 7 dS/m, user calibration
required above 7 dS/m
Volumetric water content
3 3
/m (0.08% VWC) from 0 to 50% VWC
Electrical Conductivity (bulk)
5TE Operator's Manual
): 1 (air) to 80 (water)
a
ε
(unitless) from 20-80
a
3 3
/m (±3% VWC) typical
1
1. Introduction
3 3
/m