Capacitive Proximity Sensors
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1 Capacitive Proximity Sensors
2 Capacitive Proximity Sensors 电容式接近开关工作原理 Capacitive Proximity Sensors Capacitive Proximity Sensors detect all materials, including liquids, powders and metallic and non-metallic solids. These sensors are often used to control the levels of pellets, liquids and powders in production control. Like their inductive counterparts, they are manufactured in shielded and non-shielded configurations and are available in both AC and DC power formats. The shielded models are used to detect solid products such as cartons, stacks of paper, wood or liquids through the wall of a non-metallic container. The non-shielded models are used to detect liquids or powders where the product flows around the sensor. Shielded models have a shorter detection range since part of the field is lost in the shielding process. All detection ranges given on the following pages are for a steel target which is equal to, or larger than the diameter of the sensor. Non-conductive products, such as wood or plastic, will be detected at a reduced detection range. The range at which a product is detected is directly related to the dielectric constant of the material; the greater the dielectric constant, the greater the detection range. Shielded Configuration: Non-shielded Configuration: Shielded sensors have a straight-line electrical field. They scan for the presence of solids (e.g. wafers, components, PCB s, hybrids, cartons, bottles, plastic blocks and stacks of paper) at a distance. Shielded capacitive sensors can also detect liquids through a separating wall (glass or plastic up to a maximum of 4mm thick). Non-shielded sensors have a spherical electrical fi eld. They are designed to touch the product with their active surface. They are used to detect mainly bulk goods or liquids (e.g. granulate, sugar, fl our, corn, sand, oil, water or pastes). Sensitivity Adjustment All capacitive models have an adjustable sensitivity that allows the calibration to be made in the fi eld. This allows the sensitivity to be set for the target desired; for example, the sensitivity can be reduced to ignore a glass container but still detect the liquid inside the container. Similarly, the sensitivity can be reduced to ignore a build-up of a viscous product such as honey while still detecting the level when a large amount of the product reaches the sensor. To adjust the sensitivity on a Capacitive Proximity Sensor, mount the sensor in the working position. Allow the target material to reach the position where detection should take place. If the material has not been detected, rotate the sensitivity potentiometer clockwise, with the screwdriver provided, until detection fi rst occurs (LED will illuminate). Continue to rotate the potentiometer for another 1/4 turn. Remove the target material and ensure that the sensor turns OFF (LED will turn off). If the sensor turns OFF, leave the sensitivity at that position. If the sensor remains ON, decrease the sensitivity (counterclockwise rotation) until the sensor turns OFF. For best results, position the sensitivity potentiometer half way between these two points. 2
3 Capacitive Proximity Sensors 电容接近开关的应用 Capacitive Sensor Oscillator Circuit Capacitive proximity sensors consist of an RC-oscillator with a special multi-part sensing electrode. The electrode and the oscillator circuit have a tube connected with earth potential for lateral shielding. This enables flush mounting of sensor in metal, since the electrical field is only present in front of the sensing electrode. This field is the active zone of the sensor. When the conductive material is removed from the active zone, the oscillator is undamped and the oscillation amplitude decreases. The amplifier os the oscillator voltage and the sensitivity of the sensor can be altered by the built-in potentiometer. The middle electrode together with the built-in re-coupling gives very effective compensation under conditions of humidity, dust or icing. Special circuitry automatically compensates for these influences. The preset sensing distance remains nearly constant. The electrode design, along with the compensating circuitry of capacitive sensors, is a unique design, and provides performance advantages far superior to other capacitive sensors. Applications for Capacitive Proximity Sensors 3
4 Capacitive Proximity Sensors 电容式接近开关 Material Correction Factor The reduction factors for the different materialsw are shown in the table below. If the material of the object to be sensied is not metal or water, the sensing distance is reduced. Actuating Material Sensing Distance Compared to Surface of Water 20mm 10mm 15mm 10mm Hand Square Steel Plate (100x100x1) Round Steel Plate (30 øx1) Stone (marble) Wood Glass Carbon PVC-block (30x30x5) Lupulin Granulate 1800H Head approx. 2mm immersed Polystyrene 454H Hostalen GC 8960H Head approx. 1mm immersed Vestyron Head approx. 3mm immersed Hostyren Head approx. 1mm immersed BM Scrap Material (Z) Head surrounded Hostalen GC Coarse Powder Head approx. 3mm immersed Lupulin Fine Granulate Head approx. 3mm immersed Hostaform C Hostyren (polystyrene) Head approx. 2mm immersed Hostalit S Head surrounded Hostalen PP Head surrounded Hostalit E Head approx. 4mm immersed Stryropor Unfoamed Styropor ø1.5 Antimony-trioxide Oil Maximum Sensing Distance Critical Point Conditions: Tu = 25 C; VA = 24 VDC In each case, the measurements were made from a level surface 4
5 5 Capacitive Proximity Sensors DC Standard type HCM 6.5 Series Diamete Ø6.5 Ø6.5 Mounting Shielded Unshielded Shielded Unshielded Sensing Distance 1.0 mm 2.0mm 1.0 mm 2.0mm Max. Ripple Voltage Drop Switching Frequency Switching Hysteresis Repeat Accuracy Temperature Drift EMC Ripple<10% 100mA <1.5V 100Hz <15% (Sr) <1.0% (Sr) <10% (Sr) RFI>3V/M / EFT>1KV / ESD>4KV(contact) Shock / Vibration IEC ,Part / IEC ,Part Stainless steel Connection 2m PVC Cable M8 Connect or DC 3 wire 10-30V NPN N.O HCM6.5-D01NOB-M HCM6.5-D02NON-M HCM6.5-D01NOB-M HCM6.5-D02NON-M DC 3 wire 10-30V NPN N.C HCM6.5-D01NCB-M HCM6.5-D02NCN-M HCM6.5-D01NCB-M HCM6.5-D02NCN-M DC 3 wire 10-30V PNP N.O HCM6.5-D01POB-M HCM6.5-D02PON-M HCM6.5-D01POB-M HCM6.5-D02PON-M DC 3 wire 10-30V PNP N.C HCM6.5-D01PCB-M HCM6.5-D02PCN-M HCM6.5-D01PCB-M HCM6.5-D02PCN-M
6 Capacitive Proximity Sensors DC Standard Type HCM 08 Series Diameter HCM08 HCM08 Mounting Shielded Unshielded Shielded Unshielded Sensing Distance 1.0 mm 2.0mm 1.0 mm 2.0mm Max. Ripple Voltage Drop Switching Frequency Switching Hysteresis Repeat Accuracy Temperature Drift EMC Ripple<10% 150mA <1.5V 100Hz <15% (Sr) <1.0% (Sr) <10% (Sr) RFI>3V/M / EFT>1KV / ESD>4KV(contact) Shock / Vibration IEC ,Part / IEC ,Part Stainless steel Connection 2m PVC Cable M8 Connect or DC 3 wire 10-30V NPN N.O HCM08-01NOB-M HCM08-02NON-M HCM08-01NOB-M HCM08-02NON-M DC 3 wire 10-30V NPN N.C HCM08-01NCB-M HCM08-02NCN-M HCM08-01NCB-M HCM08-02NCN-M DC 3 wire 10-30V PNP N.O HCM08-01POB-M HCM08-02PON-M HCM08-01POB-M HCM08-02PON-M DC 3 wire 10-30V PNP N.C HCM08-01PCB-M HCM08-02PCN-M HCM08-01PCB-M HCM08-02PCN-M
7 Capacitive Proximity Sensors DC Standard Type HCM 12 Series Diameter HCM12 HCM12 Mounting Shielded Unshielded Shielded Unshielded Sensing Distance 1-3mm adjustable 1-6mm adjustable 1-3mm adjustable 1-6mm adjustable Max. Ripple Voltage Drop Switching Frequency Switching Hysteresis Repeat Accuracy Temperature Drift Ripple<10% 150mA <1.5V 100Hz <15% (Sr) <1.0% (Sr) <10% (Sr) Stainless steel Connection 2m PVC Cable M12 Connector DC 3 wire 10-30V NPN N.O. HCM12-03NOB-M HCM12-06NON-M HCM12-03NOB-M HCM12-06NON-M DC 3 wire 10-30V NPN N.C. HCM12-03NCB-M HCM12-06NCN-M HCM12-03NCB-M HCM12-06NCN-M DC 3 wire 10-30V PNP N.O. HCM12-03POB-M HCM12-06PON-M HCM12-03POB-M HCM12-06PON-M DC 3 wire 10-30V PNP N.C. HCM12-03PCB-M HCM12-06PCN-M HCM12-03PCB-M HCM12-06PCN-M DC 4 wire 10-30V Changeover NPN (N0&NC) HCM12-03NSB-P HCM12-06NSN-P HCM12-03NSB-P HCM12-06NSN-P DC 4 wire 10-30V Changeover PNP (N0&NC) HCM12-03PSB-P HCM12-06PSN-P HCM12-03PSB-P HCM12-06PSN-P
8 Capacitive Proximity Sensors DC Standard Type HCM 18 Series Diameter HCM18 HCM18 Mounting Shielded Unshielded Shielded Unshielded Sensing Distance 2-8mm adjustable 2-15mm adjustable 2-8mm adjustable 2-15mm adjustable Max. Ripple Voltage Drop Switching Frequency Switching Hysteresis Repeat Accuracy Temperature Drift Ripple<10% 200mA <1.5V 100Hz <15% (Sr) <1.0% (Sr) <10% (Sr) PBT Connection 2m PVC Cable M12 Connector DC 3 wire 10-30V NPN N.O. HCM18-08NOB-P HCM18-15NON-P HCM18-08NOB-P HCM18-15NON-P DC 3 wire 10-30V NPN N.C. HCM18-08NCB-P HCM18-15NCN-P HCM18-08NCB-P HCM18-15NCN-P DC 3 wire 10-30V PNP N.O. HCM18-08POB-P HCM18-15PON-P HCM18-08POB-P HCM18-15PON-P DC 3 wire 10-30V PNP N.C. HCM18-08PCB-P HCM18-15PCN-P HCM18-08PCB-P HCM18-15PCN-P DC 4 wire 10-30V Changeover NPN (N0&NC) HCM18-08NSB-P HCM18-15NSN-P HCM18-08NSB-P HCM18-15NSN-P DC 4 wire 10-30V Changeover PNP (N0&NC) HCM18-08PSB-P HCM18-15PSN-P HCM18-08PSB-P HCM18-15PSN-P
9 Capacitive Proximity Sensors AC/DC Standard Type HCM 18 Series Diameter HCM18 HCM18 Mounting Shielded Unshielded Shielded Unshielded Sensing Distance 2-8mm adjustable 2-15mm adjustable 2-8mm adjustable 2-15mm adjustable Operating Voltage Max. Ripple Voltage Drop Switching Frequency Switching Hysteresis Repeat Accuracy Temperature Drift EMC VAC / VDC Ripple<10% <2.5mA 100mA <10VAC; 8VDCV 25HZ AC ; 40HZ DC/ <15% (Sr) <1.0% (Sr) <10% (Sr) RFI>3V/M / EFT>1KV / ESD>4KV(contact) Shock / Vibration IEC ,Part / IEC ,Part PBT Connection 2m PVC Cable M12 Connector AC/ DC 2 wire V N.O. HCM18-08UOB-P HCM18-15UON-P HCM18-08UOB-P HCM18-15UON-P AC/ DC 2 wire V N.C. HCM18-08UCB-P HCM18-15UCN-P HCM18-08UCB-P HCM18-15UCN-P
10 Capacitive Proximity Sensors DC Standard Type HCM 18 Series Diameter HCM30 HCM30 Mounting Shielded Unshielded Shielded Unshielded Sensing Distance 2-20mm adjustable 2-30mm adjustable 2-20mm adjustable 2-30mm adjustable Max. Ripple Voltage Drop Switching Frequency Switching Hysteresis Repeat Accuracy Temperature Drift Ripple<10% 200mA <1.5V 100Hz <15% (Sr) <1.0% (Sr) <10% (Sr) PBT Connection 2m PVC Cable M12 Connector DC 3 wire 10-30V NPN N.O. HCM30-20NOB-P HCM30-30NON-P HCM30-20NOB-P HCM30-30NON-P DC 3 wire 10-30V NPN N.C. HCM30-20NCB-P HCM30-30NCN-P HCM30-20NCB-P HCM30-30NCN-P DC 3 wire 10-30V PNP N.O. HCM30-20POB-P HCM30-30PON-P HCM30-20POB-P HCM30-30PON-P DC 3 wire 10-30V PNP N.C. HCM30-20PCB-P HCM30-30PCN-P HCM30-20PCB-P HCM30-30PCN-P DC 4 wire 10-30V Changeover NPN (N0&NC) HCM30-20NSB-P HCM30-30NSN-P HCM30-20NSB-P HCM30-30NSN-P DC 4 wire 10-30V Changeover PNP (N0&NC) HCM30-20PSB-P HCM30-30PSN-P HCM30-20PSB-P HCM30-30PSN-P
11 Capacitive Proximity Sensors AC/DC Standard Type HCM 30 Series Diameter HCM30 HCM30 Mounting Shielded Unshielded Shielded Unshielded Sensing Distance 2-20mm adjustable 2-30mm adjustable 2-20mm adjustable 2-30mm adjustable Operating Voltage Max. Ripple Voltage Drop Switching Frequency Switching Hysteresis Repeat Accuracy Temperature Drift VAC / VDC Ripple<10% <2.5mA 100mA <10VAC; 8VDCV 25HZ AC ; 40HZ DC <15% (Sr) <1.0% (Sr) <10% (Sr) PBT Connection 2m PVC Cable M12 Connector AC/ DC 2 wire V N.O. HCM30-20UOB-P HCM30-30UON-P HCM30-20UOB-P HCM30-30UON-P AC/ DC 2 wire V N.C. HCM30-20UCB-P HCM30-30UCN-P HCM30-20UCB-P HCM30-30UCN-P
12 Rectangular Capacitive Proximity Sensors DC Standard Type HCQ30 /35 Series Diameter HCQ30 HCQ35 Mounting Shielded Unshielded Shielded Unshielded Sensing Distance 2-6mm adjustable 2-10mm adjustable 2-20mm adjustable 2-30mm adjustable Max. Ripple Voltage Drop Switching Frequency Switching Hysteresis Repeat Accuracy Temperature Drift Connection Ripple<10% 200mA <1.5V 2 KHz <15% (Sr) <1.0% (Sr) <10% (Sr) PBT 2m PVC Cable DC 3 wire 10-30V NPN N.O. HCQ30-06NOB-P HCQ30-10NON-P HCQ35-20NOB-P HCQ35-30NON-P DC 3 wire 10-30V NPN N.C. HCQ30-06NCB-P HCQ30-10NCN-P HCQ35-20NCB-P HCQ35-30NCN-P DC 3 wire 10-30V PNP N.O. HCQ30-06POB-P HCQ30-10PON-P HCQ35-20POB-P HCQ35-30PON-P DC 3 wire 10-30V PNP N.C. HCQ30-06PCB-P HCQ30-10PCN-P HCQ35-20PCB-P HCQ35-30PCN-P
13 Ring Capacitive Proximity Sensors DC Standard Type HCR 13/ 26 Series Diameter CR13 CR26 Mounting Unshielded Unshielded Sensing Distance Ø8 Ø11 Ø12 Ø26 Max. Ripple Voltage Drop Switching Frequency Switching Hysteresis Repeat Accuracy Temperature Drift Connection Ripple<10% 200mA <1.5V 2 KHz <15% (Sr) <1.0% (Sr) <10% (Sr) PBT 2m PUR 电缆 DC 3 wire 10-30V NPN N.O. HCR13-10NO-P HCR26-15NON-P DC 3 wire 10-30V NPN N.C. HCR13-10NC-P HCR26-15NCN-P DC 3 wire 10-30V PNP N.O. HCR13-10PO-P HCR26-15PON-P DC 3 wire 10-30V PNP N.C. HCR13-10PC-P HCR26-15PCN-P
14 Ring Capacitive Proximity Sensors DC Standard Type HCR 10 Series Diameter Ø10 Ø 10 Min Detect Object Size (mm) 1.2 mm 1.2mm Max. Ripple <10% 100mA Voltage Drop < 2.0V Response time impulse width Sensitivity adjustment Detection Speed 0.5ms ms adjustment Potentiometer 35 m/s ABS Connection 2m PUR Cable M8 Connector DC 3 wire 10-30V NPN N.O. & N.C. HCR10NSP HCR10NSP DC 3 wire 10-30V PNP N.O. & N.C. HCR10PSP HCR10PSP
15 Ring Capacitive Proximity Sensors DC Standard Type HCR 15 Series Diameter Ø15 Ø15 Min Detect Object Size (mm) 2.0 mm 2.0mm Max. Ripple <10% 100mA Voltage Drop < 2.0V Response time impulse width Sensitivity adjustment Detection Speed 0.5ms ms adjustment Potentiometer 35 m/s ABS Connection 2m PUR Cable M8 Connector DC 3 wire 10-30V NPN N.O. & N.C HCR15NSP HCR15NSP DC 3 wire 10-30V PNP N.O. & N.C. HCR15PSP HCR15PSP
16 16 Ring Capacitive Proximity Sensors DC Standard type HCR 20 Series Diamete Ø 20 Ø 20 Min Detect Object Size (mm) 2.5 mm 2.5mm Max. Ripple <10% 100mA Voltage Drop < 2.0V Response time impulse width Sensitivity adjustment Detection Speed 0.5ms ms adjustment Potentiometer 35 m/s ABS Connection 2m PUR Cable M8 Connector DC 3 wire 10-30V NPN N.O. & N.C. HCR20NSP HCR20NSP DC 3 wire 10-30V PNP N.O. & N.C. HCR20PSP HCR20PSP
17 Ring Capacitive Proximity Sensors DC Standard Type HCR 30 Series Diameter Ø 30 Ø 30 Min Detect Object Size (mm) 3.5 mm 3.5mm Max. Ripple <10% 100mA Voltage Drop < 2.0V Response time impulse width Sensitivity adjustment Detection Speed 0.5ms ms adjustment Potentiometer 35 m/s ABS Connection 2m PUR Cable M12 Connector DC 3 wire 10-30V NPN N.O. & N.C. HCR30NSP HCR30NSP DC 3 wire 10-30V PNP N.O. & N.C. HCR30PSP HCR30PSP
18 Connections DC NPN NO or NC DC PNP NO or NC AC or AC / DC (Brass Housing ) AC or AC /DC Two Wiring (Plastic Housing ) DC 2 - Wire NAMUR 5 Way Rotatable Sensing Head Analog CONNECTIONS Picro-Style (M8) Picro-Style (M8) Micro-Style (M12 DC ) Micro-Style (M12 AC ) Warning : Hazardous Voltage can cause electrical shock and burns. Disconnect power before proceeding with any work on this equipment. 18
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