SD Optical Level Switch0 pages

Operational Principle
Refraction index of plastic and air varies in big
range. Infrared light can be easily reflected totally
between plastic and air. In contrast, infrared light
would totally penetrate through plastic while plastic
and liquid are taken place. Optical switch operates
by sensing the difference of refraction index
between various mediums, which causes different
degree of refraction and penetration.
When dry, the transmitted light is reflected by the
prism back to the receiver. When the sensor is
wetted in liquid, only part of the transmitted light
would be reflected back to the receiver while most is
lost into the liquid. The received light then changes
the signal and controls the switching accordingly.
Optical switch is equipped with infrared source and
receiver. They are to detect and verify the status of
infrared light reflection and penetration between the
mediums in order to trigger the alarm output.

Product Dimension
PC or Polysulfone

M12*P1.0
E10.5

Product Feature
NPN, PNP open collector output to energize relay
or PLC.
Enclosure material of PC, Polysulfone, SUS304 for
acidity and alkaline; applicable in grease, waste
water, liquid solution, liquor, alcohol...etc.
Over-current and reverse polarity protected
LED Status indication.

Product Specification
1. Material: PC, Polysulphone or SUS304, SUS316
2. Protection: IP68
3. Operation Temperature: -10~125BC
4. Ambient Temperature: -10~80BC
5. Ambient light: Max. 5000 Lux (visible light)
6. Operation Pressure: Max.10kg/cm2(PC,Polysulfone)
Max.40kg/cm2(SUS304)
7. Power Supply: 10~28 Vdc
8. Load Current: Max. Load 100mA
9. Overload Current Protection: 100mA(3/8"G/PF)
10. Connection Thread:
M12 x 1 or 3/8"G(PF)or 3/8"(NPT)
11. Lead Wire: 2m CABLE(dia. 3.8) 3C PVC 22 AWG;
custom made if over 2m

Hex19

7.6

25

46.5

PC or Polysulfone

G3/8"
E10.5

Hex22

10

25
49

SUS304 or SUS316
G3/8"
E10.5

Hex22

15.5

24.5

46.3

SUS304 or SUS316
3/8"NPT
E10.5

Hex22

15.5

24.5
46.3