Minnesota Department of Transportation

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Road Research

MnROAD - Environmental Sensors

Staff installing sensors

Environmental Sensors (Static)

The matrix below contains the different sensor type descriptions, installation methods, and some of the data collected. Due to the complexity and amount of the data please contact us for custom data requests. Most of these documents are PDFs.

Sensor Type
Sensor Type Description
Sensors located in the following layers

Data

HMA
PCC
Base
Subgrade

Temperature

Description/Installation

TC Sensor Tree Construction

Thermocouples

TC

XB

x
x
x
x

Get TC Data

 

 

Thermistors

ET TH XD

XH XL XM

XT XV

x
x
x

Request

 

 

Volumetric Water

(Moisture) Content

Moisture Measurements

Moisture Installation

Moisture Gauge

EW RE TD

x
x

Request

 

 

Relative Humidity

Building MH Sensors

Humidity Gauge

MH MP MR

x
x
Matric Potential
Building WM Trees

Resistance 

WM  

x
x
x

Request

 

Heat Dissipation

HD

x
x
Stress

Vertical Pressure

PT

x
x

Lateral Pressure

PL

x
x
Strain

Static Strain

KB VG VM VW

x

Get VW Data

 

Electrical Conductivity/Resistivity

Conductivity

EC

x
x

Resistivity Probe

RP

x
x
x