AAS 920 479B Thermometrics TSW 10 052214 web

TSW-10
Turbidity Sensor
The TSW-10 module measures the turbidity
(amount of suspended particles) of the wash water
in washing machines and dishwashers. An optical
sensor for washing machines is a measuring
product for a turbid water density or an extraneous
matter concentration using the refraction of
wavelength between photo transistor and diode.
By using an optical transistor and optical diodes,
an optical washing machine sensor measures the
amount of light coming from the source of the light
to the light receiver, in order to calculate water
turbidity.
Amphenol
Advanced Sensors
Theory of Operation
22 ±0.4
5.7 ±0.1
Photo TR
(Light receiving part)
DIODE
(Light emitting part)
34 ±0.4
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. These turbidity measurements are
supplied to the washer controller, which makes
decisions on how long to wash in all the cycles. These
decisions are made based on a comparison between
clean water measurements (taken at the beginning
of the wash cycle) and the wash water turbidity
measurement taken at the end of each wash cycle.
By measuring the turbidity of the wash water, the
washing machine can conserve energy on lightly
soiled loads by only washing as long as necessary.
This will result in energy savings for the consumer.
Upper
Base Plane
30
Specifications
Part Number
1
TSW-10
Rated Voltage
2
3
Turbidity Sensor
DC 5V (between No #1 & Ground)
VCC + (+5V)
Voltage Differential
1.3V ± 20%
DIODE
(Light emitting part)
1
Pin
Test Method
After testing voltage in water (0 NTU),
voltage test in water (1000 NTU)
(Turbidity level Calibration -> Master NTU standard
liquid )
(Voltage between No #2 pin & Ground)
Photo TR
(Light receiving part)
Output
2
Pin
3
Pin
Ri 470W
Ro 4.7KW
Operating Temperature Range
GND
-30°C ~ 80°C
Storage Temperature Range
5.0
-10°C~ 80°C
4.5
Rated Current
4.0
Insulation Resistance
3.5
Min 100 MΩ by 500V DC
Application Section
Detecting the turbidity degree of water
V (Voltage)
Max. 30 mA
3.0
2.5
2.0
1.5
0
500
1000
1500
2000
NTU
Amphenol
Advanced Sensors
www.amphenol-sensors.com
© 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-920-479B-03/2014
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