SM150 User Manual 1.0 Introduction 5
Introduction
Description
The SM150measures soil moisture content.
Its sealed plastic body is attached to two sensing rods which insert
directly into the soil for taking readings.
A waterproof plug connects to a choice of signal cables.
Both extension cables and extension tubes can be used.
The soil moisture output signal is a differential analogue DC
voltage. This is converted to soil moisture by a data logger or meter
using the supplied general soil calibrations.
It can also be calibrated for specific soils.
Features
Soil moisture accurate to ± 3%
Low salinity sensitivity
Excellent stability
Minimal soil disturbance
Easy installation at depth in augured holes
Waterproof connector to IP68
Rugged, weather-proof and can be buried.
Good electrical immunity
Choice of cabling system options
Cable connector, cylindrical profile and
extension tube design simplifies removal for
servicing
Dedicated HH150 meter kit for simple readings
HH2 meter, GP1, DL6 or DL2e loggers compatible
See also Specifications on page 26
