ブックタイトルWEB GUIDE CONTROL SYSTEMS

概要

WEB GUIDE CONTROL SYSTEMS

33The Photohead PH22 is a sensor designed to detect atransparent web or a nonwoven fabric in EPC. The sensoruses an SPD as the detector element and a white LEDas the light source, for long-term, stable meanderingdetection.System componentsThe Photohead PH21 photoelectrically detects the webedge.This sensor is a miniaturized model of PH16B, but withthe same functions.? Detects even a slight displacement of web by emitting lightwith uniform intensity.? Use of SPD enables faster reaction and improves the detectionaccuracy for high-speed operations.? Detects a 0.1mm displacement of web.? Use of white LED for the light source enables a long time, stableoperation and helps to reduce cost.Photohead PH22Photohead PH21Spotlight Distance 32 mmDetection field of view 6 mmLight source White LEDLight source wavelength Visible LightSensitivity 0.1 mm of displacement of webOutput voltage 0 to 5 V DCDetection element SPDPower supply ±15 V DCAmbient temperature 0 to +50?CAmbient humidity 35-85% RH (no condensation)Protective structure rating IP50Response frequrncy Filter ON 3 Hz (PH20A equivalent)Filter OFF 30 HzBody material Cast Aluminum AlloyMass Head: 450 g Cable: 250 gLight-emitting and lightreceivinggap 22 mmDetection field of view 6 mmLight source White LEDLight source wavelength Visible LightSensitivity Can detect a 0.1 mm displacement in atransparent webOutput voltage 0 to 4 V DC (depends on the web material)Detection element SPDPower supply ±15 V DCAmbient temperature 0 to +50?CAmbient humidity 35-85% RH (no condensation)Protective structure rating IP60 (when installed)Response frequrncy 30 HzBody material Aluminum alloy and stainless steelMass 1.3 kgSensor gap 10 mmRange of measurement ±4 mmLight source LED 12 V DCLight source wavelength 950 nmSensitivity 0.1 mm of displacement of webMaximum output 300 mV DC, ± 20%Detection element SPDPower supply DC11 V 37 mAAmbient temperature 0 to +50?CAmbient humidity 35-85% RH (no condensation)Protective structure rating IP50Body material Conductive plasticMass Head: 0.5 kg (including the cable)Screw guider: 0.5 kg? Applicable to vacuum environment? Sealing structure prevents outgassing? Corrosive gas resistant? For various web materials(transparent, opaque, and non-woven etc.)? Installable in a vacuum chamber. Machinery cost can be reducedThe PH22VAS is an EPC sensor designed to be installed ina vacuum environment.Its airtight design prevents component degradation withinthe sensor and stops outgassing. This design also prolongsthe life of the sensor in a corrosive gas environment.Photohead PH22VAS for vacuum environments