Serviceline Industrial Sensors
Serviceline Explosion Protection

Inductive sensor NBB20-U1K-N0

NBB20-U1K-N0
  • Sensor head bidirectional and rotatable
  • 20 mm flush


NAMUR sensors must be operated with approved switch amplifiers. Please find suitable devices below:

Please note: All product-related documents, such as certificates, declarations of conformity, etc., which were issued prior to the conversion under the name Pepperl+Fuchs GmbH or Pepperl+Fuchs AG, also apply to Pepperl+Fuchs SE.

Download the complete datasheet as a PDF:


Datasheet excerpt: Technical data of  NBB20-U1K-N0

General specifications
Switching functionNormally closed (NC)
Output typeNAMUR
Rated operating distance20 mm
Installationflush
Assured operating distance0 ... 16.2 mm
Actual operating distance18 ... 22 mm
Reduction factor rAl 0.37
Reduction factor rCu 0.35
Reduction factor r304 0.79
Output type2-wire
Nominal ratings
Nominal voltage8.2 V (Ri approx. 1 kΩ)
Switching frequency0 ... 250 Hz
Hysteresis1 ... 15 typ. 5 %
Reverse polarity protectionreverse polarity protected
Short-circuit protectionyes
Current consumption
Measuring plate not detected≥ 3 mA
Measuring plate detected≤ 1 mA
Switching state indicatorLED, yellow
Functional safety related parameters
MTTFd1697 a
Mission Time (TM)20 a
Diagnostic Coverage (DC)0 %
Compliance with standards and directives
Standard conformity
NAMUREN 60947-5-6:2000
IEC 60947-5-6:1999
Electromagnetic compatibilityNE 21:2007
StandardsEN 60947-5-2:2007
EN 60947-5-2/A1:2012
IEC 60947-5-2:2007
IEC 60947-5-2 AMD 1:2012
Approvals and certificates
IECEx approval
Equipment protection level GaIECEx PTB 11.0021X
Equipment protection level GbIECEx PTB 11.0021X
Equipment protection level DaIECEx PTB 11.0021X
Equipment protection level MbIECEx PTB 11.0021X
ATEX approval
Equipment protection level GaPTB 00 ATEX 2032 X
Equipment protection level GbPTB 00 ATEX 2032 X
Equipment protection level DaPTB 00 ATEX 2032 X
EAC conformityTR CU 012/2011
UL approvalcULus Listed, General Purpose
Ordinary LocationE87056
Hazardous LocationE501628
Control drawing116-0451
CCC approval
Hazardous Location2020322315002303
NEPSI approval
NEPSI certificateGYJ16.1394X
ANZEx19.3001X
Marine approvalDNVGL TAA00001A5
Ambient conditions
Ambient temperature-25 ... 100 °C (-13 ... 212 °F)
Storage temperature-40 ... 100 °C (-40 ... 212 °F)
Mechanical specifications
Connection typescrew terminals
Information for connectionA 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-sectionup to 2.5 mm2 , stripped insulation length: 7 mm
Minimum core cross-sectionwithout wire end ferrule 0.5 mm2 , with connector sleeves 0.34 mm2
Maximum core cross-sectionwithout wire end ferrule 2.5 mm2 , with connector sleeves 1.5 mm2
Connection (system side)screw terminals , M20 x 1.5 cable gland , usable thread length 9.1 mm , screw-in depth max. 9.1 mm
Housing materialPA
Sensing facePA
Degree of protectionIP66 / IP68 / IP69K
Mass225 g
NoteTightening torque: 1.8 Nm (housing)
General information
Use in the hazardous areasee instruction manuals

Classifications

SystemClasscode
ECLASS 10.0.127270101
ECLASS 9.027270101
ECLASS 8.027270101
ECLASS 5.127270101
ETIM 7.0EC002714
ETIM 6.0EC002714
ETIM 5.0EC002714
UNSPSC 12.139121550

Documents: NBB20-U1K-N0

Instruction manualsLanguageFile TypeFile Size
Instruction manualENGPDF170 KB
BetriebsanleitungGERPDF170 KB
Technical information
Technical informationENGPDF195 KB
Technische InformationGERPDF134 KB

CAD+CAE: NBB20-U1K-N0

CADFile TypeFile Size
3-D model / 3-D-ModellSTP2003 KB

Approvals+Certificates: NBB20-U1K-N0

Statements of complianceCertificate No.File TypeFile Size
EU-Declaration of conformity / EU-KonformitätserklärungDOC-5078PDF1222 KB
Certificates
- DNV GL MarineTAA00001A5 Rev. No: 3PDF393 KB
Australia Test SafeANZEx 19.3001XPDF6749 KB
Canada USA UL Hazardous LocationE501628:1:1PDF405 KB
Canada USA UL Ordinary LocationUL-US-2123898-0 / UL-CA-2119599-0PDF548 KB
China SITIIAS CCC Ex Certificate2020322315002303 (Pepperl+Fuchs (Vietnam) Company Limited)PDF2291 KB
EU PTB ATEX ia 2G, 1G, 1D s. certificatePTB 00 ATEX 2032 XPDF6355 KB
Russia NANIO "CCVE"TC RU C-DE.AA87.B.00394PDF3971 KB
Worldwide PTB IECEx iaIECEx PTB 11.0021XLINK---
Control drawings
Control drawing UL / Control drawing UL   PDF294 KB

Associated Products: NBB20-U1K-N0

Accessories

Mounting aid for VariKont and +U1+ fa

Single-channel terminal amplifier with line breakage detection, input for NAMUR sensors, DC 24 V supply voltage, standardized interface to prevent signal transmission errors, switching state display, LED yellowfa
Modular mounting bracket fa
1-channel isolated barrier, 24 V DC supply (Power Rail), Dry contact or NAMUR inputs, Usable as signal splitter (1 input and 2 outputs), Relay contact output, Fault relay contact output, Line fault detection (LFD), Housing width 12.5 mm, Up to SIL 2 acc. to IEC 61508pa

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