The Optomax Basic range of liquid level switches are an analogue optics only solution designed to meet the demand of price sensitive, high volume OEM applications.

The miniature sensor is solid state, containing only an infra-red LED and phototransistor which are optically coupled by the tip when the sensor is in air. When the sensing tip is immersed in liquid, the infra-red light escapes making the phototransistor output change state. The sensor can detect the presence or absence of almost any liquid type, oil or water based.

Because the Optomax Basic range of liquid level switches only contains Optoelectronic components the customer is responsible for interfacing the sensor to their application with technical support from SST. OEM applications can be very price sensitive so by removing the circuit protection, voltage regulation, processing electronics and output stage, the sensor cost is significantly reduced. Available in 3 wire (common cathode/emitter) and 4 wire (galvanically isolated) configurations.

With housing options for internal or external sensor mounting and available in two chemically resistant housing materials, Polysulfone, the standard choice for most applications or Trogamid, which is typically used in food and beverage applications.

The Optomax Basic Range of liquid level switches are only sold in high volumes and have an minimum order quantity of 100 units.

Features:

• Optics only solution
• Customer is responsible for interfacing the sensor to their application
• 3 wire (common cathode/emitter) and 4-wire (galvanically isolated) version available
• MOQ of 100 units
• Polysulfone or Trogamid housing material options
• Internal and external mounting options
• High pressure option available

The LLHP high performance level switches offer larger mounting threads and robust stainless steel housings that can survive in aggressive environments.

The microcontroller based sensor is solid state, incorporating an infra-red LED and phototransistor which are optically coupled by the tip when the sensor is in air. When the sensing tip is immersed in liquid, the infra-red light escapes making the output change state. The sensor can detect the presence or absence of almost any liquid type; oil or water based. It is insensitive to ambient light and is not affected by foam when in air or by small bubbles when in liquid.

A range of N and P type output configurations can sink or source up to 100mA at a supply voltage range from 4.5 to 15.4 Vdc or 800mA at a supply voltage range from 10 to 45Vdc, all of which can be configured to output a high or low signal in either a wet or dry state.

The LLHP high performance level switch combines a robust stainless steel housing with a chemically resistant Polysulfone or Trogamid sensing tip and a selection of termination options. With large threads suitable for external mounting and for use in two operating temperature ranges; Standard (-25 to 80°C) or Extended (-40 to 125°C).

Features:

• Designed for applications requiring a robust metal housing and larger threads for external mounting
• Reverse polarity, ESD and transient over-voltage protected
• Wide supply voltage ranges
• N and P type output configurations, capable of sinking or sourcing up to 800mA, can directly drive loads
• Standard and extended temperature ranges available
• Stainless steel housing with polysulfone sensing tip
• Choice of terminations
• High operating pressure

Optomax industrial glass range of liquid level switches which are often single point can operate in high pressure, high temperature, aggressive environments due to their stainless steel and glass construction while offering industrial supply voltages and outputs that can directly drive loads.

The microcontroller based Optomax Industrial Glass Range of single point Liquid Level Switches are solid state, incorporating an infra-red LED and phototransistor which are optically coupled by the tip when the sensor is in air. When the sensing tip is immersed in liquid, the infra-red light escapes making the output change state. The sensor can detect the presence or absence of almost any liquid type; oil or water based. It is insensitive to ambient light and is not affected by foam when in air or by small bubbles when in liquid.

A range of N and P type output configurations can sink or source up to 1A at supply voltage ranges from 4.5 to 15.4Vdc or 8 to 30Vdc and can be configured to output a high or low signal in either a wet or dry state. Options for connecting to inductive loads or digital interfaces are also available.

The 316L stainless steel single point liquid level switch can operate up to 600 bar (8700 psi) with housing threads suitable for external sensor mounting and for use in operating temperature range -40 to 125°C.

Samples for the Optomax Industrial Glass range of liquid level switches are available on request for this product. For high volume production orders, please contact us.

Features:

• Reverse polarity, ESD, transient over-voltage and short circuit protected
• Wide supply voltage ranges
• N and P type output configurations, capable of sinking or sourcing up to 200mA, can directly drive small loads
• Standard and extended temperature ranges available
• Thread options for external mounting
• Stainless steel housing with simex glass sensing tip
• Very high operating pressure
• Built-in output delays available on request for applications where sloshing causes intermittent switching

The Optomax Industrial level switch was designed to offer industrial supply voltages and outputs that can directly drive higher power loads.

The microcontroller based sensor is solid state, incorporating an infra-red LED and phototransistor which are optically coupled by the tip when the sensor is in air. When the sensing tip is immersed in liquid, the infra-red light escapes making the output change state. The sensor can detect the presence or absence of almost any liquid type; oil or water based. It is insensitive to ambient light and is not affected by foam when in air or by small bubbles when in liquid.

A range of N and P type output configurations can sink or source up to 1A at supply voltage ranges from 4.5 to 15.4Vdc or 8 to 30Vdc and can be configured to output a high or low signal in either a wet or dry state. Options for connecting to inductive loads or digital interfaces are also available.

With housing threads suitable for external sensor mounting and for use in two operating temperature ranges; Standard (-25 to 80°C) or Extended (-40 to 125°C).

Available in two chemically resistant housing materials, Polysulfone, the standard choice for most applications, or Trogamid, which is typically used in food and beverage applications.

The Optomax Industrial level switch was built to the highest quality standards and are not only highly accurate but they also have a good lifespan.

Features:

• Reverse polarity ESD, transient over-voltage and short circuit protected
• Wide supply voltage ranges
• N and P type output configurations, capable of sinking or sourcing up to 200mA, can directly drive small loads
• Standard and extended temperature ranges available
• Various mounting threads available
• LED output indication

The Optomax Digital Level Switch is Ideal For Applications With Restricted Space That Require A Miniature, Low Power And Low Cost Sensing Solution.

The microcontroller based sensor is solid state, incorporating an infra-red LED and phototransistor which are optically coupled by the tip when the sensor is in air. When the sensing tip is immersed in liquid, the infra-red light from the Optomax Digital level switch escapes making the output change state. The sensor can detect the presence or absence of almost any liquid type; oil or water based. It is insensitive to ambient light and is not affected by foam when in air or by small bubbles when in liquid.

The TTL compatible push-pull output can sink and source up to 100mA at a supply voltage range of 4.5 to 15.4Vdc and can be configured to output a high or low signal when in either a wet or dry state. A fail-safe PWM option is also available with a supply voltage range of 4.5 to 5.5Vdc.

With housing options for internal or external sensor mounting and for use in two operating temperature ranges; Standard (-25 to 80°C) or Extended (-40 to 125°C).

Available in two chemically resistant housing materials, Polysulfone, the standard choice for most applications or Trogamid, which is typically used in food and beverage applications although these liquid level switches can be used in other applications.

Features:

• Reverse polarity, ESD and transient over-voltage protected
• Wide supply voltage range
• Push-pull output, capable of sinking or sourcing up to 100mA, can directly drive small loads
• Optional fail-safe PWM output
• Standard and extended temperature ranges available
• Polysulfone or Trogamid housing material options
• Internal or external mounting options
• High pressure option available

The POS Glass Tip level switches are robust and rugged, ideal for operation in harsh industrial environments, aggressive chemicals and extreme temperatures up to 140°C.

The POS Glass Tip sensor is solid state, combining an infra-red LED and phototransistor which are optically coupled by the tip when the sensor is in air. When the sensing tip is immersed in liquid, the infra-red light escapes making the output change state. The sensor can detect the presence or absence of almost any liquid type, oil or water based.

Options of N and P type outputs can sink or source up to 200mA at a supply voltage range from 12 to 28Vdc and can be configured to be a high or low signal in either a wet or dry state. The sensor is available with a M12 connector or 3 core cable and also has LED output indication.

The stainless steel body combined with a crystal glass sensing tip allows the POS Glass Tip level switch to operate under high pressure conditions up to 80 bar and across two temperature ranges; Standard (-40 to 100°C) or Extended (-40 to 140ºC).

Features:

• Designed for applications requiring a robust metal housing and a wide operating temperature range
• Reverse polarity, ESD, transient over-voltage and short circuit protected
• Wide supply voltage ranges
• N and P type output configurations, capable of sinking or sourcing up to 200mA, can directly drive small loads
• Standard and extended temperature ranges available
• Stainless steel housing with simex glass sensing tip
• Choice of terminations
• Very high operating pressure
• LED output indication