Safiery Ultrasonic Tank Sensor T his sensor permanently fixes under a water tank . It uses ultrasonic principles so therefore requires a sealed interface between the sensor and the tank shell. This sensor uses ultrasonic technology but is diffferent to "air based" ultrasonics which are less reliable. The ultrasonic signal travels through "solid" material to find an air interface. It is the same technology as used on pregnant women with "ultrasound" readings. Like that process, a gell is used when the sensor is positioned to ensure that it WILL WORK prior to fixing. The recessed groove captures excess glue when fixing. The install process requires just 12V power to be applied and the sensor held into position. The solid blue LED on the bottom of the sensor will illuminate with power and FLASH if the ultrasonic has found an air interface. The flashing confirms to the installer that the sensor will operate. It works exceedingly well with metal or propolyene tanks where there is no additional "skin" or potential air layer between the sensor and the tank. Excessive paint or rough surface will void operation. When operating successfully, the sensor flashes "blue" LED at the sensor itself. A gel couplant is included with the sensor.
Recommended application Water Tank IP68
Measurement mode Non-contact
Length of wire 450mm
Size (LxWxH)
27.7x27.7x17 mm
Work temperature - 15 – +60 °
Storage temperature - 25 – +8 °C
Electrical Parameters
Working voltage 1 2 V DC
Average current
<25mA
Blind zone
≤50mm
Measuring height of liquid level Response time (without water)
50-1,000mm
Response time (with water)
2s
2s
Output mode Analog voltage
Resolution 1mm
Center frequency
2mHz
ESD ±4/±8KV
Accuracy (normal temperature)
±(10 + current height of liquid level*1%)
LED indicator light instructions Long bright
Power on, but did not detect the liquid Slow flash Liquid is detected and the LED flashes at one frequency per second
Electronic Wire Connections
Red VCC
Black GND White NC
Yellow Signal Output +
The Relational Graph Between Distance
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