The Heron Sensors

Sensors and Interfaces

Heron supply a range of sensors to integrate with our irrigation and environmental controllers. The sensors can help to optimise your growing conditions, improving efficiency and increasing yield.

Soil Moisture Sensors

Two types of moisture sensors can be connected to Heron controllers, the Heron moisture sensor and the Decagon moisture sensor. The Decagon moisture sensor works at a higher frequency and provides a scientific measure of volumetric water content. The moisture sensors can be used to either initiate or disable irrigation or used for monitoring.

Light Sensor

The Heron light sensor allows irrigation to be controlled on light. Up to 8 different light
energy level thresholds can be set to initiate your irrigation.
• Can also be used to initiate irrigation based on light power
• Supplied on a stainless-steel bracket for mast or wall mounting.
• Can be used to reduce EC levels when using a fertilizer dosing system.
• Light Power Range 4-2000 Watts/cm2. Wave Length 420 – 675 nm.

Raining Sensor

The Heron raining sensor detects the immediate on set of rain fall. The raining sensor is usually
used for environmental control but can be used to immediately disable irrigation.
• Gold-plated heated plate for a very quick response time and long-term reliability.
• The unit is fully encapsulated.
• Rain fall as low as 0.005 mm will be detected.

Internal Temperature Sensors

Heron produce an aspirated and non-aspirated temperature sensor for internal temperature measurement. Irrigation can be enabled or disabled once a certain temperature threshold has been reached.
• The non-aspirated sensor is suitable for applications where the temperature is not changing rapidly and the sensor can be mounted in the shade.
• The aspirated sensor provides more accurate measurement of air temperature particularly when the temperature is changing.
• The aspirated sensor includes a water-resistant fan and can also be fitted with a humidity sensor.
• Accuracy to 0.1 C with a Range of -10 C – + 50 C.

Level Sensor Board

• The level sensor board allows level sensing in a water tank using stainless steel rods.
•  It provides a very accurate trip point and is ideal for small or shallow tanks.
• The board includes 2 sensor inputs for high and a low-level sensing. Hysteresis software on the output prevents the output changing to rapidly. The output will not change state until both the high and low sensor are in the same condition.
• Option to allow for tank filling or tank emptying applications.