WHAT ARE PRESET TROPF SENSORS?

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.

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



