Capacitive Proximity Sensors

Capacitive Proximity Sensors

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

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

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 20 10 158 10 Square Steel Plate (100x100x1) 20 10 15 10 Round Steel Plate (30 øx1) 11 6 4 2 Stone (marble) 18 8.5 8 5 Wood 13 5 5 3 Glass 12 4 6 2.5 Carbon 19 9 12 9 PVC-block (30x30x5) 8 4 1.5 - Lupulin Granulate 1800H 8 3 2.5 Head approx. 2mm immersed Polystyrene 454H 9.5 3 4 1 Hostalen GC 8960H 8.2 1.5 2 Head approx. 1mm immersed Vestyron 719-50 7.9 1.2 2 Head approx. 3mm immersed Hostyren 8.2 3 3 Head approx. 1mm immersed BM Scrap Material (Z) 6.7 1.4 1 Head surrounded Hostalen GC Coarse Powder 8 2 1.5 Head approx. 3mm immersed Lupulin Fine Granulate 7.7 1.5 1 Head approx. 3mm immersed Hostaform C 9.8 3.5 4 1 Hostyren (polystyrene) 7.4 2 2.5 Head approx. 2mm immersed Hostalit S 7.5 2 1.5 Head surrounded Hostalen PP 5 1.5 1.5 Head surrounded Hostalit E 7.2 1 1 Head approx. 4mm immersed Stryropor Unfoamed 8.1 3 3 Styropor ø1.5 Antimony-trioxide 6.2 0.9 2.5 Oil 9 3 5 Maximum Sensing Distance Critical Point 55 110 Conditions: Tu = 25 C; VA = 24 VDC In each case, the measurements were made from a level surface 4

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 60947-5-2,Part 7.4.1 / IEC 60947-5-2,Part 7.4.2 Stainless steel Connection 2m PVC Cable M8 Connect or DC 3 wire 10-30V NPN N.O HCM6.5-D01NOB-M2 6061008 HCM6.5-D02NON-M2 6062016 HCM6.5-D01NOB-M83 6061012 HCM6.5-D02NON-M83 6062020 DC 3 wire 10-30V NPN N.C HCM6.5-D01NCB-M2 6061009 HCM6.5-D02NCN-M2 6062017 HCM6.5-D01NCB-M83 6061013 HCM6.5-D02NCN-M83 6062021 DC 3 wire 10-30V PNP N.O HCM6.5-D01POB-M2 6061010 HCM6.5-D02PON-M2 6062018 HCM6.5-D01POB-M83 6061014 HCM6.5-D02PON-M83 6062022 DC 3 wire 10-30V PNP N.C HCM6.5-D01PCB-M2 6061011 HCM6.5-D02PCN-M2 6062019 HCM6.5-D01PCB-M83 6061015 HCM6.5-D02PCN-M83 6062023

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 60947-5-2,Part 7.4.1 / IEC 60947-5-2,Part 7.4.2 Stainless steel Connection 2m PVC Cable M8 Connect or DC 3 wire 10-30V NPN N.O HCM08-01NOB-M2 6081020 HCM08-02NON-M2 6082044 HCM08-01NOB-M83 6081024 HCM08-02NON-M83 6082048 DC 3 wire 10-30V NPN N.C HCM08-01NCB-M2 6081021 HCM08-02NCN-M2 6082045 HCM08-01NCB-M83 6081025 HCM08-02NCN-M83 6082049 DC 3 wire 10-30V PNP N.O HCM08-01POB-M2 6081022 HCM08-02PON-M2 6082046 HCM08-01POB-M83 6081026 HCM08-02PON-M83 6082050 DC 3 wire 10-30V PNP N.C HCM08-01PCB-M2 6081023 HCM08-02PCN-M2 6082047 HCM08-01PCB-M83 6081027 HCM08-02PCN-M83 6082051 6

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-M2 6121300 HCM12-06NON-M2 6121600 HCM12-03NOB-M83 6121306 HCM12-06NON-M83 6121606 DC 3 wire 10-30V NPN N.C. HCM12-03NCB-M2 6121301 HCM12-06NCN-M2 6121601 HCM12-03NCB-M83 6121307 HCM12-06NCN-M83 6121607 DC 3 wire 10-30V PNP N.O. HCM12-03POB-M2 6121302 HCM12-06PON-M2 6121602 HCM12-03POB-M83 6121308 HCM12-06PON-M83 6121608 DC 3 wire 10-30V PNP N.C. HCM12-03PCB-M2 6121303 HCM12-06PCN-M2 6121603 HCM12-03PCB-M83 6121309 HCM12-06PCN-M83 6121609 DC 4 wire 10-30V Changeover NPN (N0&NC) HCM12-03NSB-P2 6121304 HCM12-06NSN-P2 6121604 HCM12-03NSB-P83 6121310 HCM12-06NSN-P83 6121610 DC 4 wire 10-30V Changeover PNP (N0&NC) HCM12-03PSB-P2 6121305 HCM12-06PSN-P2 6121605 HCM12-03PSB-P83 6121311 HCM12-06PSN-P83 6121611 7

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-P2 6182800 HCM18-15NON-P2 6821500 HCM18-08NOB-P83 6182806 HCM18-15NON-P83 6821506 DC 3 wire 10-30V NPN N.C. HCM18-08NCB-P2 6182801 HCM18-15NCN-P2 6821501 HCM18-08NCB-P83 6182807 HCM18-15NCN-P83 6821507 DC 3 wire 10-30V PNP N.O. HCM18-08POB-P2 6182802 HCM18-15PON-P2 6821502 HCM18-08POB-P83 6182808 HCM18-15PON-P83 6821508 DC 3 wire 10-30V PNP N.C. HCM18-08PCB-P2 6182803 HCM18-15PCN-P2 6821503 HCM18-08PCB-P83 6182809 HCM18-15PCN-P83 6821509 DC 4 wire 10-30V Changeover NPN (N0&NC) HCM18-08NSB-P2 6182804 HCM18-15NSN-P2 6821504 HCM18-08NSB-P83 6182810 HCM18-15NSN-P83 6821510 DC 4 wire 10-30V Changeover PNP (N0&NC) HCM18-08PSB-P2 6182805 HCM18-15PSN-P2 6821505 HCM18-08PSB-P83 6182811 HCM18-15PSN-P83 6821511 8

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 20-250VAC / 20-250VDC 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 60947-5-2,Part 7.4.1 / IEC 60947-5-2,Part 7.4.2 PBT Connection 2m PVC Cable M12 Connector AC/ DC 2 wire 20-250V N.O. HCM18-08UOB-P2 6182812 HCM18-15UON-P2 6821512 HCM18-08UOB-P82 6182814 HCM18-15UON-P82 6821514 AC/ DC 2 wire 20-250V N.C. HCM18-08UCB-P2 6182813 HCM18-15UCN-P2 6821513 HCM18-08UCB-P82 6182815 HCM18-15UCN-P82 6821515 9

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-P2 6322000 HCM30-30NON-P2 6323000 HCM30-20NOB-P83 6322006 HCM30-30NON-P83 6323006 DC 3 wire 10-30V NPN N.C. HCM30-20NCB-P2 6322001 HCM30-30NCN-P2 6323001 HCM30-20NCB-P83 6322007 HCM30-30NCN-P83 6323007 DC 3 wire 10-30V PNP N.O. HCM30-20POB-P2 6322002 HCM30-30PON-P2 6323002 HCM30-20POB-P83 6322008 HCM30-30PON-P83 6323008 DC 3 wire 10-30V PNP N.C. HCM30-20PCB-P2 6322003 HCM30-30PCN-P2 6323003 HCM30-20PCB-P83 6322009 HCM30-30PCN-P83 6323009 DC 4 wire 10-30V Changeover NPN (N0&NC) HCM30-20NSB-P2 6322004 HCM30-30NSN-P2 6323004 HCM30-20NSB-P83 6322010 HCM30-30NSN-P83 6323010 DC 4 wire 10-30V Changeover PNP (N0&NC) HCM30-20PSB-P2 6322005 HCM30-30PSN-P2 6323005 HCM30-20PSB-P83 6322011 HCM30-30PSN-P83 6323011 10

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 20-250VAC / 20-250VDC 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 20-250V N.O. HCM30-20UOB-P2 6322012 HCM30-30UON-P2 6323012 HCM30-20UOB-P82 6322014 HCM30-30UON-P82 6323014 AC/ DC 2 wire 20-250V N.C. HCM30-20UCB-P2 6322013 HCM30-30UCN-P2 6323013 HCM30-20UCB-P82 6322015 HCM30-30UCN-P82 6323015 11

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-P2 6302600 HCQ30-10NON-P2 6302100 HCQ35-20NOB-P2 6352200 HCQ35-30NON-P2 6352300 DC 3 wire 10-30V NPN N.C. HCQ30-06NCB-P2 6302601 HCQ30-10NCN-P2 6302101 HCQ35-20NCB-P2 6352201 HCQ35-30NCN-P2 6352301 DC 3 wire 10-30V PNP N.O. HCQ30-06POB-P2 6302602 HCQ30-10PON-P2 6302102 HCQ35-20POB-P2 6352202 HCQ35-30PON-P2 6352302 DC 3 wire 10-30V PNP N.C. HCQ30-06PCB-P2 6302603 HCQ30-10PCN-P2 6302103 HCQ35-20PCB-P2 6352203 HCQ35-30PCN-P2 6352303 12

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-P2 6130000 HCR26-15NON-P2 6260000 DC 3 wire 10-30V NPN N.C. HCR13-10NC-P2 6130001 HCR26-15NCN-P2 6260001 DC 3 wire 10-30V PNP N.O. HCR13-10PO-P2 6130002 HCR26-15PON-P2 6260002 DC 3 wire 10-30V PNP N.C. HCR13-10PC-P2 6130003 HCR26-15PCN-P2 6260003 13

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 10 150ms adjustment Potentiometer 35 m/s ABS Connection 2m PUR Cable M8 Connector DC 3 wire 10-30V NPN N.O. & N.C. HCR10NSP2 6100004 HCR10NSP83 6100006 DC 3 wire 10-30V PNP N.O. & N.C. HCR10PSP2 6100005 HCR10PSP83 6100007 14

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 10 150ms adjustment Potentiometer 35 m/s ABS Connection 2m PUR Cable M8 Connector DC 3 wire 10-30V NPN N.O. & N.C HCR15NSP2 6150008 HCR15NSP83 6150010 DC 3 wire 10-30V PNP N.O. & N.C. HCR15PSP2 6150009 HCR15PSP83 6150011 15

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 10 150ms adjustment Potentiometer 35 m/s ABS Connection 2m PUR Cable M8 Connector DC 3 wire 10-30V NPN N.O. & N.C. HCR20NSP2 6200008 HCR20NSP83 6200010 DC 3 wire 10-30V PNP N.O. & N.C. HCR20PSP2 6200009 HCR20PSP83 6200011

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 10 150ms adjustment Potentiometer 35 m/s ABS Connection 2m PUR Cable M12 Connector DC 3 wire 10-30V NPN N.O. & N.C. HCR30NSP2 6300004 HCR30NSP83 6300006 DC 3 wire 10-30V PNP N.O. & N.C. HCR30PSP2 6300005 HCR30PSP83 6300007 17

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