Nanjing KJT Electric Co,.LTD
Datasheet excerpt: Technical data of NBB20-U4K-N0
| General specifications | ||
|---|---|---|
| Switching function | Normally closed (NC) | |
| Output type | NAMUR | |
| Rated operating distance | 20 mm | |
| Installation | flush | |
| Assured operating distance | 0 ... 16.2 mm | |
| Actual operating distance | 18 ... 22 mm typ. 20 mm | |
| Reduction factor rAl | 0.33 | |
| Reduction factor rCu | 0.31 | |
| Reduction factor r304 | 0.74 | |
| Output type | 2-wire | |
| Nominal ratings | ||
| Nominal voltage | 8.2 V (Ri approx. 1 kΩ) | |
| Switching frequency | 0 ... 300 Hz | |
| Hysteresis | typ. 5 % | |
| Reverse polarity protection | reverse polarity protected | |
| Short-circuit protection | yes | |
| Current consumption | ||
| Measuring plate not detected | ≥ 2.2 mA | |
| Measuring plate detected | ≤ 1 mA | |
| Switching state indicator | LED, yellow | |
| Functional safety related parameters | ||
| MTTFd | 1697 a | |
| Mission Time (TM) | 20 a | |
| Diagnostic Coverage (DC) | 0 % | |
| Compliance with standards and directives | ||
| Standard conformity | ||
| NAMUR |
EN 60947-5-6:2000 IEC 60947-5-6:1999 |
|
| Electromagnetic compatibility | NE 21:2007 | |
| Standards | EN IEC 60947-5-2 | |
| Approvals and certificates | ||
| IECEx approval | ||
| Equipment protection level Ga | IECEx PTB 11.0021X | |
| Equipment protection level Gb | IECEx PTB 11.0021X | |
| Equipment protection level Da | IECEx PTB 11.0021X | |
| ATEX approval | ||
| Equipment protection level Ga | PTB 00 ATEX 2032 X | |
| Equipment protection level Gb | PTB 00 ATEX 2032 X | |
| Equipment protection level Da | PTB 00 ATEX 2032 X | |
| UL approval | ||
| Ordinary Location | E87056 | |
| Hazardous Location | E501628 | |
| Control drawing | 116-0451 | |
| CCC approval | ||
| Hazardous Location | 2020322315002303 | |
| NEPSI approval | ||
| NEPSI certificate | GYJ16.1394X | |
| CML approval | on request | |
| Ambient conditions | ||
| Ambient temperature | -25 ... 100 °C (-13 ... 212 °F) | |
| Storage temperature | -40 ... 100 °C (-40 ... 212 °F) | |
| Mechanical specifications | ||
| Connection type | screw terminals | |
| Information for connection |
A maximum of two conductors with the same core cross section may be mounted on one terminal connection! tightening torque 1.2 Nm + 10 % |
|
| Core cross section | up to 2.5 mm2 | |
| Minimum core cross-section | without wire end ferrules 0.5 mm2 , with connector sleeves 0.34 mm2 | |
| Maximum core cross-section | without wire end ferrules 2.5 mm2 , with connector sleeves 1.5 mm2 | |
| Housing material | PA/metal | |
| Sensing face | PA | |
| Degree of protection | IP68 / IP69K | |
| Mass | 225 g | |
| Dimensions | ||
| Height | 40 mm | |
| Width | 40 mm | |
| Length | 118 mm | |
| Note | Tightening torque: 1.8 Nm (housing) | |
| General information | ||
| Use in the hazardous area | see instruction manuals | |
