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OPT Optical Level Sensor
Brand: KOBOLD Instruments, IncThe optical level sensors of model OPT have been developed for monitoring transparent liquids. Due to the very small dimensions, very slight switching hysteresis and high repeatability, the instruments are also suited for service in small vessels.
The optical sensor is situated in a robust housing.
It comprises a plastic hollow hemisphere, in which the infrared diode is fitted as a transmitter and a semiconductor as a receiver. When the sensor is not wetted by liquid, the infrared light is reflected fully from the surface of the hemisphere to the receiver.
As soon as the sensor is covered with liquid, the refractive index on the boundary layer changes and most of the light escapes into the liquid.
Less light then reaches the receiver, which allows switching to take place. The level probe should not be fitted with the sensor pointing downwards, as errors can occur due to drops of liquid sticking to it.
1 - 12 of 24 Part Numbers
OPT-0 1 10
- Version - 5-12 Vdc, NPN, OEM (Without CE)
- Housing Material - Polypropylene
- Connection - M14 with Nut
OPT-0 1 22
- Version - 5-12 Vdc, NPN, OEM (Without CE)
- Housing Material - Polypropylene
- Connection - G1/2"
OPT-0 1 N4
- Version - 5-12 Vdc, NPN, OEM (Without CE)
- Housing Material - Polypropylene
- Connection - 1/2" NPT
OPT-0 2 10
- Version - 5-12 Vdc, NPN, OEM (Without CE)
- Housing Material - Stainless Steel
- Connection - M14 with Nut
OPT-0 2 22
- Version - 5-12 Vdc, NPN, OEM (Without CE)
- Housing Material - Stainless Steel
- Connection - G1/2"
OPT-0 2 N4
- Version - 5-12 Vdc, NPN, OEM (Without CE)
- Housing Material - Stainless Steel
- Connection - 1/2" NPT
OPT-4 1 10
- Version - 24 Vdc ± 15%, PNP
- Housing Material - Polypropylene
- Connection - M14 with Nut
OPT-4 1 22
- Version - 24 Vdc ± 15%, PNP
- Housing Material - Polypropylene
- Connection - G1/2"
OPT-4 1 N4
- Version - 24 Vdc ± 15%, PNP
- Housing Material - Polypropylene
- Connection - 1/2" NPT
OPT-4 2 10
- Version - 24 Vdc ± 15%, PNP
- Housing Material - Stainless Steel
- Connection - M14 with Nut
OPT-4 2 22
- Version - 24 Vdc ± 15%, PNP
- Housing Material - Stainless Steel
- Connection - G1/2"
OPT-4 2 N4
- Version - 24 Vdc ± 15%, PNP
- Housing Material - Stainless Steel
- Connection - 1/2" NPT
1 - 12 of 24 Part Numbers
Specifications
Brand
Applications
- Drinks Vending Machines
- Leakage Protection
- Medical Technology
- Motor Vehicle Industry
BSP Connection
- G 1/2”
Cable Length
- 5 feet (1.5 metres), Ø 0.177” (Ø 4.5 mm) - Cable
Cable Material
- Polyurethane
Electrical Contacts
- N/C Contact
- N/O Contact
Enclosure / Body Material
- 304L Stainless Steel
- Polypropylene
Environmental Protection
- IP68
- NEMA 6
Gasket Material
- FPM
Hysteresis
- ± 0.039” (± 1 mm)
Input
- 15 mA at 5 Vdc
- 17 mA at 24 Vdc
Maximum System Pressure
- psi: 145 (bar: 10, kPa: 1,000)
NPT Connection
- 1/2” NPT Male
Nut & Bolt Material
- Polyamide - Hexagon Nut
O-Ring Material
- FPM
Operating Temperature
- -20° to 80° C (-4° to 176° F)
Output
- 200 mA, Short-Circuit-Proof - OPT-4 & OPT-5
- 3 mA At, Max.
- Maximum
- NPN
- Open Collector
Power Requirement
- 24 Vdc ± 15 %
- 5-12 Vdc ± 5 %
Repeatability
- ± 0.039” (± 1 mm)
Response Time
- 1 second - with Falling Level
- 50 µs - with Rising Level
Sensor / Probe Material
- Polysulfone
Switch Type
- NPN Open Collector