Optomax Industrial Glass Range of Liquid Level Switches

  • Built-in protection against reverse polarity, ESD, transient over-voltage, and short circuits
  • Compatible with wide supply voltage ranges
  • N and P type outputs capable of sourcing or sinking up to 1A, suitable for directly driving small loads
  • Available in both standard and extended temperature ranges
  • Multiple thread options for external mounting
  • Rugged stainless steel body with durable borosilicate glass sensing tip
  • Optional output delay functionality available for applications with liquid sloshing

Description

The Optomax Industrial Glass Liquid Level Sensors from SST are designed for demanding environments that require a robust and reliable sensing solution. These single-point level switches are constructed with a stainless steel housing and a borosilicate glass tip, allowing them to operate under high pressure, high temperature, and chemically aggressive conditions.

These sensors use an internal microcontroller to manage a solid-state design that combines an infrared LED and phototransistor. When the sensor is in air, the infrared beam is internally reflected. Once the sensing tip is submerged, the light escapes, causing the sensor’s output to change state. The sensor is effective with a wide range of liquids, whether oil-based or water-based, and performs reliably in the presence of foam or bubbles.

SST’s Optomax Industrial Glass range offers versatile N and P type output options, able to source or sink up to 1A, and function across two voltage ranges: 4.5 to 15.4V DC or 8 to 30V DC. Outputs can be configured to signal either high or low depending on whether the sensor is wet or dry. This makes the sensors adaptable for a range of control systems, including digital interfaces and inductive loads.

With multiple threaded mounting options, these sensors are suitable for external installations and can operate within a wide temperature range of -40 to +125°C. Optional output delays are also available for systems where sloshing liquids could trigger false signals.

Samples are available upon request, and for volume production pricing or tailored options, please get in touch with SST’s engineering team.

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Contact our experienced engineers to discuss your application needs.

Additional information

Housing Material

Polysulphone, Trogamid

Thread

1/2 SAE, 1/4 NPT, M10x1, M12x1

Min. Temperature

-40, -25

Max. Temperature

80, 125

Output Polarity

High in air, Low in air, PWM output

Min. Supply Voltage

4.5

Max. Supply Voltage

15.4

Max. Pressure (bar)

7, 20

Output Circuit

N&P Push Pull

Output Current

100mA

Cable Termination

24AWG – 250mm – PTFE Wires – 8mm tinned

Supply Voltage

4.5Vdc to 15.4Vdc

Part Number

LLG210D3-003

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