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Industrial Optical Sensors

Industrial Optical Sensors

OPT Series: 8-30 vdc Industrial Optical Level Sensors optical-plastic-large

For industrial level sensor applications, optical sensors can be used to provide a switch output with no moving parts. This Polysulphone liquid level sensor provides a single point liquid level detection via a TTL compatible push-pull output designed for price sensitive OEM applications. The liquid sensor provides a low power signal, making these optical sensors ideal for microcontrollers, when needing to detect the absence or presence of clean liquids. An infrared LED and phototransistor ensures dependable optical coupling when the sensor is in air to prevent false readings. When the sensing tip is immersed in liquid, the phototransistor senses the liquid to switch the output state.

Standard Sensors and Mounting Thread Types

Sensor ModelThread TypeSensor TypeAvailabilityWetted Material
OPT4210-24P1 M12x1 Wet - (high in air) 4 weeks Polysulphone
OPT4210-24P2 M12x1 Dry - (low in air) 4 weeks Polysulphone
OPT4610-24P1 1/2" SAE Wet - (high in air) 4 weeks Polysulphone
OPT4610-24P2 1/2" SAE Dry - (low in air) 4 weeks Polysulphone
OPT4710-24P1 1/4" NPT Wet - (high in air) Order Now Polysulphone
OPT4710-24P2 1/4" NPT Dry - (low in air) 4 weeks Polysulphone

For all models listed on this page, other fittings and voltages are available for order. Contact your sales representative to discuss your application.

Sensor Specifications

Sensor Specifications

Supply Voltage (Vs) +8Vdc to +30Vdc
Output Type -P1 (Wet Sensing) output high in air
-P2 (Dry Sensing) output low in air
Output sink / source current Push-Pull up to 1Amp
Operating Temperatures -40°C to +125°C (Extended)
Housing Material Polysulphone
Standard Leads 24AWG, 250mm PTFE wire
Pressure Rating 100 psi Max
Red Vs (supply)
Blue 0V (Gnd)
Output Voltage (Vout)
Vs = 8 - 30Vdc
Iout = 1A
Output High 
Vout = Vs - 1.8V Max
Output Low 
Vout = 0V + 0.7V Max
Output Voltage (Vout)
Vs = 8 - 30Vdc
Iout = 0mA
Output High 
Vout = Vs - 0.3V Max 
Output Low
Vout = 0V + 0.1V Max

ipdfIndustrial Plastic Optical Product Specifications 


Sensor Cleaning and Compatibility

Clean with alcohol or Freon based solvents. DO NOT use chlorinated solvents such as tricholorethane which can affect the sensor surface. Check chemical compatibility chart before fluid installation.