METER TEROS 54 - Page 13

9
TEROS 54
CAUTION
Never hit the head of the TEROS 54 with a regular hammer. This can damage the probe. Only use the dedicated slide
hammer tool from METER.
The following steps detail how to use the TEROS 54 auger:
1. Assemble the auger using the handle and auger tip.
2. Mark the probe length 70 cm on the auger rod.
NOTE: Do not dig deeper than 70 cm to ensure that the probe is in good contact with the soil after installation.
3. Place the auger tip on the ground.
4. Place a level vertically on the rod of the auger.
5. Check the level for the proper angle until the auger tip is in far enough so the angle does
not change.
6. Hit the handle gently a few times with a dead blow hammer until the auger tip is 30 cm
in the soil.
7. Rotate the auger one revolution to cut off the soil in the borehole.
8. Pull the auger out of the borehole after 30 cm to avoid soil compaction.
9. Remove the soil inside the auger tip.
10. Place the auger back into the borehole to the previous depth.
11. Repeat step6 through step10 until the desired depth (maximum is 70 cm) is reached.
After drilling a hole for the TEROS 54, place the TEROS 54 with the pointed side (probe tip)
centered over the hole. Press the TEROS 54 as deep as possible into the soil and use the
slide hammer (available from METER) to help with installation in firm, compact soils.
1. Place the slide hammer vertically and centered on the head of the TEROS 54.
2. Bring the weight to approx. half the drop height.
3. Release the weight.
4. Repeat step2 and step3 until the TEROS 54 has reached its intended depth.
NOTE: The TEROS 54 should be driven approximately 1.0 cm (0.39 in) deep into the soil per drop. Increase the
drop height only if the installation comes to a standstill or the probe is being driven less than 1.0 cm per drop. In
that case, lift the weight all the way up to its maximum height.
NOTE: Allow the weight of the drop hammer to fall by gravity only, do not extend the drop distance or increase
the impact force by pushing or using a heavier weight.
NOTE: If the TEROS 54 cannot be installed to the intended depth due to rocky compact soil conditions, do not
use force, but change the installation location to avoid damaging the probe!
After installing the TEROS 54 in the soil to its maximum installation depth (the head of
the TEROS 54 should be approximately 5 mm deep in the soil), attach the protective cap
(Figure5) to the sensor head and connect the TEROS 54 to a data logger (Section2.2).