Optomax Digital Range of Liquid Level Switches

Name: Optomax Digital Range of Liquid Level Switches
Brand: SST Sensing
Price: 12.69 GBP
Availability: InStock

The Optomax Digital Level Switch is an excellent solution for applications with limited space that require a compact, energy-efficient, and cost-effective sensing device.

This solid-state sensor is microcontroller-based and utilizes an infrared LED and phototransistor. These components are optically coupled at the tip when the sensor is in air. When the tip is submerged in liquid, the infrared light escapes, causing the output state to change. The sensor can identify the presence or absence of nearly any liquid type, whether oil- or water-based. It is resistant to ambient light interference and unaffected by foam in air or small bubbles in liquid.

The TTL-compatible push-pull output can source and sink up to 100mA, operating within a supply voltage range of 4.5 to 15.4Vdc. It can be configured to provide a high or low signal in wet or dry conditions. Additionally, a fail-safe PWM option is available, functioning within a supply voltage range of 4.5 to 5.5Vdc.

The sensor offers versatile housing options for both internal and external mounting and is available in two operating temperature ranges: Standard (-25 to 80°C) and Extended (-40 to 125°C).

Downloads

Datasheets

Optomax Digital Liquid Level Switch

Application Notes

2D Drawings

3D STEP Files

Ask the expert Request A Quote

TECHNICAL SPECIFICATIONS

Supply Voltage (Vs)	4.5V_DC to 15.4V_DC or 4.5V_DC to 5.5V_DC @(PWM output)
Supply Current (ls)	2.5mA max. (Vs = 15.4V_DC)
Output Sink and Source Current (lout)	100mA
Operating Temperatures	Standard: -25°C to 80°C Extended: -40°C to 125°C
Storage Temperatures	Standard: -30°C to 85°C Extended: -40°C to 125°C
Housing Material	Polysulfone or Trogamid
Sensor Termination	24AWG, 250mm PVDF wires, 10mm tinned

OUTPUT VALUES

Output Voltage (Vout):	lout = 100mA
Output High	Vout = Vs - 1.5V max
Output Low	Vout = 0V + 0.5V max
PWM
Duty Cycle In Air	25% ±10%
Duty Cycle In Liquid	75% ± 10%
Frequency	2kHz ± 10%


*Note:*	Other sensor options available on request, email: technical@sstsensing.com

ELECTRICAL INTERFACE

Wire	Designation
Red	Vs
Green	Output
Blue	0V

Key Features

Protection against reverse polarity, electrostatic discharge (ESD), and transient over-voltage
Operates across a broad supply voltage range
Push-pull output design, capable of sourcing or sinking up to 100mA, suitable for driving small loads directly
Optional fail-safe pulse-width modulation (PWM) output feature
Available in both standard and extended temperature range variants
Choice of housing materials: Polysulfone or Trogamid
Flexible mounting options: internal or external
High-pressure configuration available as an option