Tropf Blumat 5" Sensor - 1 Individual Sensor Bulk
Tropf Blumat 5" Sensor - 1 Individual Sensor Bulk
SKU: IG14607
$9.18
- Description
The Tropf Blumat is a ceramic soil moisture sensor that automatically waters your plants at their own preferred rate — no timers, no electricity, no programming. Each sensor reads soil moisture and opens or closes water flow accordingly, letting every plant determine its own irrigation schedule.
How It Works +
Each sensor is filled with water and voided of air before being connected to a supply line. The ceramic cone is the only point of contact with the soil.
- As the soil dries, it pulls moisture from inside the ceramic cone through osmotic pressure.
- Since the sensor is sealed, this creates a pressure differential that pulls on a plastic diaphragm inside the top of the sensor.
- The diaphragm opens the irrigation tube, allowing water to flow through gradually.
- Water is emitted and moisture is slowly restored to the surrounding soil.
- Once moisture equalizes, the pressure difference is relieved and the diaphragm closes the irrigation tube.
- The sensor resets and waits for the next dry cycle.
The brown adjustment knob on top can be calibrated to specific plant types, strains, or growing media.
Specs & Dimensions +
- Materials — Clay ceramic, silicone, plastic
- Weight — 1.3 oz
- Total length — 5.2"
- Max soil depth — 4"
- Cap width — 1.4"
- Sensor width — 1"
- Tubing length — 8"
- Flow rate — Adjustable
- Connects to — 8mm Blumat and SuperFlex tubing
- Standalone? — No — requires a water source
Installation Instructions +
Water your garden thoroughly (ideally overnight) before installation.
Prep the sensors:
- Fill a container with cooled, non-aerated water. Separate the ceramic bottoms from the plastic tops and soak both for at least 15 minutes.
- While holding the green top underwater, use a pipette or your thumb to push water into the holes in the cap to displace any air bubbles.
- Hold both parts underwater, confirm no air remains, and reassemble while still submerged. Keep sensors submerged until ready to install.
While sensors are soaking:
- Connect 8mm tubing to your reservoir or pressure reducer.
- Run the 8mm tubing to your plants.
Installation:
- Water the garden again and push the sensor into the soil where you want moisture sensed. The ceramic cone must be fully covered and firmly anchored.
- Cut the 8mm tubing and insert the included 8x8x3mm tee. For the last sensor, use the elbow instead. Add a shut-off valve after the final sensor as an air/debris purge valve.
Adjustment:
- Turn on water and open each sensor valve until flow is visible. Slowly tighten clockwise until a hanging drop is just achieved, then tighten two more triangles to calibrate to current moisture levels.
*If using BluSoak drip tape, stop at the hanging drop — do not tighten the additional two triangles.
Monitor: Check back in 12–24 hours and fine-tune. Tighten for less water, loosen for more. Use the Blumat Digital Moisture Meter to dial in precisely.

