Liquid Level Switches
Optomax Digital Series

GENERAL DESCRIPTION

The liquid level sensor provides single point liquid detection via a TTL compatible push pull output.

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 present at the phototransistor which makes the output change state.

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
  Low power
  Low cost
  Compact 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)  100mA
Operating temperatures                       -25°C to +80°C
Storage temperatures                          -30°C to +85°C
Housing material                                  Polysulfone
Sensor termination                               24AWG, 250mm PTFE wires, 8mm tinned

OUTPUT VALUES
Output Voltage 3 (Vout):      lout = 100mA
Output High                            Vout = Vs - 1.5V max
Output Low                             Vout = 0V + 0.5V max