Features The PF21 series of mini-type photoelectric sensors is a new and upgraded product. It includes through-beam, polarized reflective, and diffuse types of sensors Diffuse reflection type with background suppression function Non-sphere optical lens totally eliminate stray light and special optical structure has strong light resistance NPN/PNP output can be selected LIGHT ON/DARK ON can be selected Protection rating IP67 with the complex process Built-in reverse polarity protection, over-voltage protection, short-circuit protection The wiring outlet is integrally formed, and the sealing performance is better Detailed Photos Product Parameters PF21B Diffuse Photoelectric Sensor Model PF21B-150A PF21B-350A PF21B-900A General parameters: Working Principle Background suppression Sensing Range 2~150mm 5~350mm 5~900mm Light Source PinPoint-LED, visible red light LED, red light; Laser, infrared light Wavelength 630nm 630nm,940nm Spot Diameter &Phi;6mm @150mm &Phi;6.6mm @350mm LED:&Phi;23mm@500mm Laser:&Phi;16mm@500mm Electronic Parameters: Operating Voltage 10~30VDC No-load current Emitter <20mA; Receiver <15mA Output Current <100mA Voltage Drop <1.5V Response time <1.25ms <2.5ms 120ms switching frequency 400Hz 200Hz 8Hz Mode of Action Light on, dark on, light/dark on switching, according to model selection protection circuit Reverse polarity protection, short circuit protection Indicator Power is the green indicator, output is the yellow indicator Control output Transistor output, NPN/PNP according to model selection Mechanical parameters: Appearance Size 12mm&times;33mm&times;21.5mm Shell Material ABS+PC Lens Material PMMA Connection Type 2m cable; M8 connector; The M8 connector with 300mm cable Cable Diameter &Phi;3.4mm Conductor Cross Section 0.14mm&sup2; Environmental Parameter: Ambient brightness Sunlight 100000Lux; Incandescent lamp 3000Lux Operating Temperature -25~55&ordm;C Storage Temperature -30~70&ordm;C Protection rating IP67 Product Application Certifications Packaging & Shipping Product self-inspection steps 1. Detect whether the installation position of the object and the proximity sensor has deviated, slacked, or skewed; whether there is slack, poor contact, or disconnection in the wiring and connection parts 2. Whether there is adhesion or accumulation of metal dust, etc. 3. Is there any abnormality in using temperature conditions and environmental conditions? 4. Set whether the flashing of the display lamp type is abnormal. Suppose you must be careful not to disassemble and repair by yourself during the inspection, and to easily find out the fault. In that case, you can investigate the operating state of the sensor through the connection with the portable detector, and then repair it according to the situation. In order to make the photoelectric sensor work stably for a long time, it should be regularly checked with the same contents as the general control equipment to maintain its long-term function. The photoelectric sensor can also be stocked. Once a problem with the photoelectric sensor is found, we can replace it in time without affecting the use of the sensor. Company Profile Tianjin G-TEK sensor technology co..ltd is indicated in providing intelligent sensor products and customized solutions for logistics automation, factory automation and process automation. The predecessor of the company is Tianjin G-TEK automation technology Co.,ltd, a professional sensor manufacturer and sensor solution provider, which was established in 2003 with business ranges from Proximity switches, photoelectric sensors, measurement, and safety light curtains to Laser rangefinder sensors, laser rada