Watermark Monitors

Watermark Monitors

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$50.00
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The WATERMARK Monitor is the standard wired version of our data logger, providing users with a reliable, simple, and effective means of collecting information.

This data can be evaluated to determine ways to improve the irrigation scheduling for optimum results. Individual sensor readings display on the Monitor and can be taken at any time manually. The In-Field display allows you to make on the spot checks as necessary for scheduling purposes while periodic readings are being taken to record the performance history.

Record soil moisture, soil temperature and switch positions for an accurate record of the performance of your irrigation schedule. Irrometer switching pressure gauges are used as switch position sensors to indicate when the system pressure is on and off to display the irrigation events. Temperature compensation of the soil moisture reading is automatic by using one or more temperature sensors or programming a default value. The Irrometer Model RSU (4-20mA transducer) can also be read (wiring adapters and auxilliary sensor power required).

Spring-loaded terminal strips are provided for sensor connections, which allow for easy installation and never need tightening. Included wire entry strain relief connectors keep enclosure sealed and retain wires. Data can be downloaded directly to a computer, with a PDA or via wireless telemetry.

The Watermark Monitor is user programmed for the individual characteristics of the site to be monitored:

  • A unique location name
  • The time interval to automatically take readings, from once every minute to once every day
  • A unique name for each sensor being read
  • The date and time you want readings to begin
  • The selection of sensor type for each input port:
  • Watermark Soil Moisture Sensor
  • Temperature Sensor in Fahrenheit
  • Temperature Sensor in Centigrade
  • Switch Position
  • Irrometer Model RSU (4-20mA transducer)
  • Stored readings are downloaded to a computer for display, as in this sample. Other display options are available.


The WaterGrarh software, included with the Watermark Monitor, is used to set up your individual site profile, launch the data-logger, download recorded history and graphically display the results.

The data file created can also be opened by some spreadsheet or graphing programs, like Microsoft Excel.

WATERMARK Monitor Features:

  • Automatically reads sensors at a selectable interval
  • 8 sensor capacity, can read:
  • WATERMARK Soil Moisture Sensors
  • Temperature Sensors
  • Tipping Bucket Rain Gauges (with 900M-RGA adapter)
  • IRROMETER Tensiometers (with RSU)
  • On/Off switch states
  • 4-20 mA
  • 0-5 V
  • Temperature compensation
  • WaterGraph Software included (MS Windows only)
  • In-field display of current reading
  • Download history to a computer
  • Outdoor mount
  • 9 Volt battery included
  • Complete with 8 sensors (1 Temperature & 7 WATERMARKs)

The WATERMARK Monitor is user programmed for the individual characteristics of the site to be monitored:

  • A unique location name
  • The time interval to automatically take readings, from once every minute to once every day
  • A unique name for each sensor being read
  • The date and time you want readings to begin
  • The selection of sensor type for each input port