Vaisala WAA151 Installation Manual download pdf (Page 104)

Installation Manual __________________________________________________________________

102 __________________________________________________________________ M010114en-B

Soil Temperature Sensors

QMT103

The QMT103 soil/water temperature sensor has a ready-made cable

and a connector. Connect the signal cable to an available receptacle

(for example Soil T1) at the bottom of the equipment enclosure (see

section Connecting Cables on page 129).

9901-012

Figure 96 QMT103 Soil/Water Temperature Sensor

QMT107

During a typical installation, QMT107 probe is pressed into pre-

formed holes, but they can also be placed into excavated holes that are

then filled. On hard or rocky ground, a pilot hole is pre-formed with

an auger rod. Drill a hole according to the following procedure:

1. Choose a desired location for the probe. Assure that probe holes

are located within cable length of the logging unit.

2. Drill a hole into the ground with the auger held as straight as

possible. After you have drilled about 20 cm, extract the auger

from the hole.

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Vaisala WAA151 Installation Manual Page 104