HAL300UA-A

Series:	HAL®
Packaging:	Tape & Box (TB)
Part Status:	Last Time Buy
Function:	Latch
Technology:	Hall Effect
Polarization:	South Pole
Sensing Range:	2.2mT Trip, -2.2mT Release
Test Condition:	25°C
Voltage - Supply:	4.5 V ~ 24 V
Current - Supply (Max):	6.8mA
Current - Output (Max):	30mA
Output Type:	Open Drain
Features:	Temperature Compensated
Operating Temperature:	-40°C ~ 140°C (TA)
Package / Case:	TO-226-3, TO-92-3 (TO-226AA)
Supplier Device Package:	TO-92UA-4

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HAL300UA-A is a type of magnetic sensor switch that communicates crucial aquatic information to the control system. It uses Hall technology to detect the presence of magnetic field, and provides highly accurate measurement or sensing signal to the control system. Its application field and working principle will be discussed below.ApplicationThe HAL300UA-A is widely used in various aquatic applications such as fish farming, aquaculture, environmental and water quality monitoring, and research. The switch could detect various aquatic parameters such as pressure, flow, and water level that affects the aquatic system. Moreover, due to its highly flexible design, this switch is also suitable for automatic water pump control systems, liquid level controlling, and liquid storage tanks’ water level assessing.Working PrincipleThe HAL300UA-A magnetic sensor switch is based on the Hall technology that measure the tiny motion of magnets present inside the liquid tank that the switch is placed in. By using analogue technique to measure the small changes in the magnetic flux, it is able to measure the water level, pressure and flow accurately.The small amount of motion from the magnets is sensed by the Hall elements, which produces output signals that are amplified and digitized. The output digital signals are then sent to the control system for further processing.The switch is equipped with highly sensitive Hall elements, which provides a large signal dynamic range. Moreover, the built-in amplifiers are highly linear with low distortion. This ensures the error free monitoring and eliminates the need for calibration.AdvantagesThe HAL300UA-A provides several advantages over other liquid level measuring systems. Firstly, this switch is extremely compact, making it easier to install in small areas. Secondly, due to its digitalized signal-processing technology, it provides highly accurate measurements with no need for calibration. Thirdly, this switch is highly resistant to shock and vibration, and thus suitable for tough aquatic environment where extreme thermal and physical shocks can be expected. Finally, the switch is energy efficient – it has low power consumption of 8 mA in average and 6 mA in standby mode – making it an ideal device for power sensitive applications.ConclusionThe HAL300UA-A is a highly sensitive, accurate, and energy efficient magnetic sensor switch suitable for a wide range of water environment. It is extremely reliable in providing accurate measurements that are crucial for controlling aquatic system. Through its highly flexible design, it can be applied to almost any kind of water-sensing application such as liquid level controlling, fish farming, and research.

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