AAS 920 156B Thermometrics Turbidity 091814 web

Turbidity Sensor
• Sensor for washing machines
• Accurate sensitivity
• Sensor for dishwashers
• Compact size
• Easy to install
Advanced Sensors
Turbidity Sensor Specifications
Theory of Operation
The sensor operates on the principle that when light is passed through a sample of water, the amount
of light transmitted through the sample is dependent on the amount of soil in the water. As the soil level
increases, the amount of transmitted light decreases. The turbidity sensor measures the amount of transmitted light to determine the turbidity of the wash water. Knowing this will result in energy savings for the
Rated Voltage
5 VDC (between number 1 and ground)
Voltage Off
2.7V ±20%
Test Method
After testing voltage in water (turbidity level
0%), voltage test in water (turbidity level
3.5%); (voltage between number 2 pin and
Operation Temperature Range
-14°F to 176°F (-10°C to 80°C)
Test Circuit
Storage Temperature Range
-22°F to 176°F (-30°C to 80°C)
Rated Current
Maximum 30 mA
Insulation Resistance
Minimum 100 MS by 500 VDC
Application Section
Detecting the degree of turbidity of water
Advanced Sensors
© 2014 Amphenol Corporation. All Rights Reserved. Specifications are subject to change without notice.
Other company names and product names used in this document are the registered trademarks or
trademarks of their respective owners.
AAS-920-156B - 09/2014
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