Watermark Soil Moisture Sensor

Description

Watermark Soil Moisture Sensor

Watermark Soil Moisture Sensor consists of a pair of highly corrosion resistant electrodes that are imbedded within a granular matrix.

A current is applied to the WATERMARK to obtain a resistance value. The WATERMARK Meter or Monitor correlates the resistance to centibars (cb) or kilopascals

(kPa) of soil water tension.

The WATERMARK is designed to be a permanent sensor, placed in the soil to be monitored and “read” as often as necessary with a portable or stationary device.

Internally installed gypsum provides some buffering for the effect of salinity levels normally found in irrigated agricultural crops and landscapes.

Features

Proven stable calibration

Range of measurement from 0 to 239 cb (kPa)

Fully solid-state • Will not dissolve in soil

Not affected by freezing temperatures

Internally compensated for commonly found salinity levels

Inexpensive, easy to install and use

Compatible with AC or DC reading devices (specialized circuit required)

NO maintenance required