Electro-optical level switch OPT-A2

for liquidspolysulfonestainless steel

An optical level switch works by emitting a beam of infrared light within a prism and measuring the amount of light received. When the measured fluid reaches the sensor the amount of emitted light received drops thus triggering the contacts. As the sensor is detecting the state between material covering or not covering the prism it can be used to detect the presence or absence of fluid thus preventing damage to pumps. The compact unit houses the infrared transmitter, the prism, the receiver and the electronics, there is also an external LED indicator to show the condition of the switch. The sensor requires a power supply of between 10-28 Volts Dc. The benefit of the modern optical sensor is that there are no moving parts that can retain material and get clogged up or damaged, simply fit and forget. Product Feature * High quality sealed unit with 2m lead * NPN,PNP open collector output to energise relay or PLC. * Enclosure material of PC (Polycarbonate), PSU (Polysulfone), 304 or 316 Grade Stainless Steel for acidity and alkaline; applicable in waste water, Wine, Vinegar solutions, liquor, alcohol....etc. * Over current and reverse polarity protected * LED Status indication * Not reccomended for use where fluids may leave residue. The OPT-A2 model is an electro-optic level switch, manufactured by The Comus Group. This product has a maximum 100 mA load current with 10-28 Volts DC power supply. The switch can operate with 40 kg/cm2 pressure, and includes a 3/8 G (BSP) and 3/8 NPT connecting thread. Specifications Load Current (Max): 100mA Power Supply: 10~28 Volts DC Operation Pressure: 40Kg/cm2 Connection Thread: 3/8” G (BSP) 3/8” NPT