Turck Proximity Sensors Catalog Page

Process
Automation

Hazardous Area Proximity Sensors

TURCK NAMUR proximity sensors are 2-wire sensing devices meeting the interoperability requirements of EN 60947-5-6.

Because NAMUR sensors operate on very low power, they can be designed to be intrinsically safe for use in hazardous
locations. Turck NAMUR compliant sensors have intrinsic safety approval from FM, CSA, ATEX and others.

Figure 1

The operation of NAMUR sensors is similar to that of a variable
resistor, with a change of impedance as a target approaches the
sensor. When no metal is being sensed, an inductive sensor is in a
low impedance state and draws a current of more than 2.2 mA.
When a metal target enters the high-frequency field radiated from
the sensor face, the impedance increases as the target approaches.
When fully damped, the sensor draws less than 1.0 mA. This
current change is used to trigger an external amplifier at a defined
switch point, usually about 1.5 mA.

NAMUR sensors contain a relatively small number of components, which allows the construction of small devices and helps
to ensure a high degree of reliability. As the sensors are 2-wire current loops with fairly low impedance, they are unaffected
by most transients.

General NAMUR Specifications

Differential Travel (Hysteresis) . . . . . . . . . . . 1-10% (5% typical)

Nominal Voltage . . . . . . . . . . . . . . . . . . . 8.2 VDC (EN60947-5-6)

Resistance Change from

Nonactivated to Activated Condition . . . . . . . . typical <1.0 to >8.0 kΩ

Resulting Current Change . . . . . . . . . . . . . . ≥2.2 mA to ≤1.0 mA

Recommended Switching Point for

Remote Amplifier . . . . . . . . . . . . . . . . . . >1.2 to <2.1 mA, typ. 1.55 mA ON/1.75 mA OFF

Power-On Effect . . . . . . . . . . . . . . . . . . . Realized in Amplifier

Reverse Polarity Protection . . . . . . . . . . . . . Incorporated

Wire-Break Protection . . . . . . . . . . . . . . . . Realized in Amplifier

Transient Protection . . . . . . . . . . . . . . . . . Realized in Amplifier

Shock. . . . . . . . . . . . . . . . . . . . . . . . . 30 g, 11 ms

Vibration . . . . . . . . . . . . . . . . . . . . . . . 55 Hz, 1 mm Amplitude in all 3 Planes

Repeatability . . . . . . . . . . . . . . . . . . . . . ≤2% of Rated Operating Distance

See TURCK Sensors Catalog for detailed individual specifications for all NAMUR sensors.

TURCK NAMUR proximity sensors are functionally compatible with all

switch amplifiers with input characteristics that meet the NAMUR
requirements. Their approved intrinsic safety entity parameters are
compatible with all TURCK safety switch amplifiers and remote I/O
systems. See Section B, IS Interface Technology, and Section C, IP 20
Slice I/O, for more information.

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TURCK
Process Automation – Sensors

NAMUR Barrel Style Sensors

Metal Barrel

Quick Disconnect Integral Cable

8 mm Diameter, Sensing Range 1.5-3 mm

Bi 1.5-EG08K-Y1-H1341 Bi 1.5-GS880-Y0
Bi 1.5-EG08K-Y1X-H1341 Bi 1.5-EG08K-Y1
Bi 1.5-EG08-Y1-H1341 Bi 1.5-EG08-Y1
Ni 1.5-EG08K-Y1-H1341 Bi 1.5-G08-Y1
Ni 1.5-EG08K-Y1X-H1341 Ni 2-G08-Y1
Ni 1.5-EG08-Y1-H1341 Ni 3-EG08K-Y1

12 mm Diameter, Sensing Range 2-5 mm

Bi 2-EM12-Y0X-H1141 Bi 2-EG12-Y0X
Bi 2-M12-Y1X-H1141 Bi 2-G12-Y0
Bi 2-MT12-Y0X-H1141 Bi 2-G12-Y0X
Bi 2-M12E-Y0X-H1141 Ni 5-G12-Y0
Ni 5-M12-Y1X-H1141 Ni 5-G12-Y0X
Ni 5-G12-Y0-H1141

18 mm Diameter, Sensing Range 5-10 mm

Bi 5-M18-Y1X-H1141 Bi 5-EG18-Y0
Ni10-M18-Y1X-H1141 Bi 5-G18-Y0
BiD2-G18-Y0-H1141/S212 Bi 5-EG18-Y0X

BiD2-G180-Y1/S212
Ni10-G18-Y0
Ni10-G18-Y0X

Plastic Barrel

Quick Disconnect Integral Cable Terminal Chamber

11 mm Diameter, Sensing Range 2-5 mm

Bi 2-K11-Y1
Ni 5-K11-Y0

12 mm Diameter, Sensing Range 2-5 mm

Bi 2-S12-Y0X-H1141 Bi 2-P12-Y0 Bi 2-P12SK-Y1X
Ni 5-S12-Y0X-H1141 Bi 2-P12-Y0/S100 Ni 5-P12SK-Y0X

Bi 2-P12-Y0X
Bi 2-P12-Y1X/S97
Ni 5-P12-Y0/S100
Ni 5-P12-Y0X
Ni 5-P12-Y1

18 mm Diameter, Sensing Range 5-10 mm

Ni10-K18-Y1 Bi 5-P18-Y0 Bi 5-P18SK-Y1X

Bi 5-P18-Y0X Ni10-P18SK-Y1X
Bi 5-P18-Y0/S100
Ni10-P18-Y0X
Ni10-P18-Y1
Ni10-P18-Y0/S100

20 mm Diameter, Sensing Range 10 mm

Ni10-K20-Y1

30 mm Diameter, Sensing Range 10-15 mm

Bi10-M30-Y1X-H1141 Bi10-G30-Y0

Bi10-G30-Y0X
Bi10-G30-Y0/S90
Ni15-G30-Y0
Ni15-G30-Y0X

See TURCK Sensor Catalog for detailed individual specifications for all NAMUR sensors.

20 mm Diameter, Sensing Range 10 mm

Bi10-P30-Y0X
Bi10-P30-Y1
Ni15-P30-Y0X
Ni15-P30-Y1

20 mm Diameter, Sensing Range 10 mm

Ni20-K40-Y1

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