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WHAT ARE PRESET TROPF SENSORS?

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Dialed-In Watering, Right Out of the Box

Tropf Blumat sensors are the heart of a Blumat watering system—moisture-sensing valves that automatically open and close based on your soil’s needs. Now, with the preset Tropf Blumat sensor, setup has never been easier. Each sensor is bench-calibrated and hand-marked in our Colorado warehouse, so you can install with confidence in minutes—no calibration, no guesswork.

These are the key elements that make presets different.

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Preset Tropf Blumat
10% off
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Preset Tropf Blumat
Preset Tropf Blumat
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Preset Tropf Blumat
Preset Tropf Blumat
Preset Tropf Blumat
Preset Tropf Blumat
Preset Tropf Blumat
Preset Tropf Blumat

Preset Tropf Blumat

    A game changing innovation for fast, foolproof installation
$15.12
$15.12

The Preset Tropf Blumat is a hand-calibrated sensor that takes the guesswork out of Blumat setup. No soil calibration required — just insert, set to your pressure range, and grow. Available in 5", 9", and Watering Head Only.

Sensor Options
  • 5" Preset Blumat — Best for small containers under 5 gallons, shallow-rooted plants, or capillary mat systems.
  • 9" Preset Blumat — Best for larger pots and beds where you want to target root-zone moisture. Adjustable from surface level to 9" deep.
  • Watering Head Only — Already have Blumat sensors? Swap just the head for the preset version. Includes a union for easy connection without replacing tubing.
How Preset Calibration Works

Each sensor is hand-marked in our Colorado warehouse with two color-coded reference points on the adjustment dial:

  • Gold — for low-pressure systems like gravity setups
  • Silver — for high-pressure systems like hose bibs or pump kits

For medium-pressure systems, adjust between the two marks. The sensor is still fully adjustable at any time using the included adjustment key through the top access port.

What's Included
  • Preset Blumat sensor (5", 9", or head only based on selection)
  • Hand-marked adjustment dial with gold and silver reference points
  • Protective cap to prevent accidental adjustments
  • Adjustment key
  • 3mm union for easy install and repositioning


Preset Blumat Sensors come in 5 inch, 9 inch, and the Watering Head Only. We recommend using a 5" sensor on any pot smaller than 5 gallons and a 9" sensor for pots 5 gallons and above. The Watering Heads are to retro-fit your existing Blumat system.

download instructions 

Make the one time adjustment before installation based on your systems pressure. 

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