METER TEROS 21 - Operation; Safety Precautions for Operation; Sensor Installation Guide

2
OPERATION
2. OPERATION
Please read all instructions before operating the TEROS 21 to ensure it performs to its
full potential.
SAFETY PRECAUTIONS
METER sensors are built to the highest standards, but misuse, improper protection, or
improper installation may damage the sensor and possibly void the manufacturer’s warranty.
Before integrating TEROS 21 into a system, follow the recommended installation instructions
and have the proper protections in place to safeguard sensors fromdamage.
2.1 INSTALLATION
Follow the steps listed in Table 1 to set up the sensor. It is critical that the sensor has good
hydraulic contact with the soil to make accurate measurements.
Table 1 Installation
Tools Needed
Auger or shovel
Knife (if installing in shallow depth)
Water (for packing soil or making slurry)
Preparation
Check Sensor Functionality
Plug the sensor into the logger (Section 2.2) to make sure the sensor
isfunctional.
Field Installation
Create Hole
Auger or trench a hole to the desired sensor depth.
Pack Sensor
Moisten native soil and pack it rmly around the entire sensor discs. Ensure
the soil is in contact with all surfaces of the ceramic.
NOTE: Sandy soils may not adhere to the sensor even when wet. If so, place the sensor at
the bottom of the hole and carefully pack the soil around the sensor. Be sure to pack the
soil firmly around ceramic surfaces.