Liquid Level Switches

Optomax Industrial Series

GENERAL DESCRIPTION

The LLC Industrial Series liquid level sensor provides single point liquid detection via a TTL compatible output.

This  sensor  range  was  designed  to  directly  switch incandescent indicators, sounders, relays or applications which require higher output power.

An infra-red LED and phototransistor accurately positioned at the base of the sensing tip ensure good optical coupling between the two when the sensor is in air. When the sensing tip is immersed in liquid, the infra-red light escapes from the cone causing a change in the amount of light detected at the phototransistor which makes the output change state. Various electrical outputs are available to suit different applications.

FEATURES

  Liquid level switches that can detect almost any liquid type; oil or water based

  Choice of material; Polysulfone (standard) or Trogamid®

  Choice of threads and terminal connections

BENEFITS

  High power

  Industrial supply voltage

  Direct load drive design

TECHNICAL SPECIFICATIONS

Supply voltage (Vs)         4.5V DC  to 15.4V DC

Supply current (ls)         2.5mA max. (Vs = 15.4V DC)

Output sink and source current (lout)    1A

Operating temperatures      -40°C to +125°C

Storage temperatures        -40°C to +125°C

Housing material          Polysulfone

Sensor termination        20AWG, 250mm PTFE wires, 8mm tinned

OUTPUT VALUES

Output Voltage 3 (Vout):  lout = 1A

Vs = 4.5 ~ 15.4V DC

Output High           Vout = Vs - 1.5V max

Output Low           Vout = 0V + 0.5V max