Lanbao NAMUR Cylindrical Inductive Sensor Family

Lanbao LR12X, LR18X, and LR30X NAMUR inductive sensors are designed for intrinsically safe or low-energy input circuits where 8.2V NAMUR signaling is required instead of standard PNP or NPN switching.

Review sensing principle, target model, mounting clearance, electrical interface, and service format together before freezing the part number. The linked datasheet, CAD drawing, STEP model, and compliance files should be used for final design review.

Features

• Covers the common cylindrical Lanbao NAMUR bodies across M12, M18, and M30 sizes.
• Includes both flush and non-flush options so the body can be matched to the mounting envelope and target size.
• Useful for hazardous-area architectures or barriers that expect classic NAMUR current behavior.
• Provides family-level CAD and 3D resources for layout review before choosing the final body size.

Specifications

Parameter	Value
Family scope	LR12X, LR18X, and LR30X cylindrical NAMUR inductive sensors
Output type	NAMUR current interface
Supply voltage	8.2V DC
Output current	Triggered <=1mA / Not triggered >=2.2mA
Load resistance	>=1kOhm
Rated distance	M12 2mm flush or 4mm non-flush / M18 5mm flush or 8mm non-flush / M30 10mm flush or 15mm non-flush
Assured distance	M12 0-1.6mm or 0-3.2mm / M18 0-4mm or 0-6.4mm / M30 0-8mm or 0-12mm
Switch-point drift	<= +/-10% of Sr
Hysteresis	1% to 20%
Repeat accuracy	<= 3%
Switching frequency	M12 2000Hz flush or 1500Hz non-flush / M18 1500Hz flush or 1000Hz non-flush / M30 1000Hz flush or 800Hz non-flush
Ambient temperature	-25C to 70C
Ambient humidity	35% to 95%RH
Protection degree	IP67
Housing material	Nickel-copper alloy
Connection type	2m PVC cable

Integration Notes

Use this family only when the control architecture or isolation barrier expects NAMUR behavior. These sensors do not replace standard PNP or NPN proximity switches one-for-one; the triggered and not-triggered states are defined by current level at an 8.2V supply, so the cabinet interface must already be designed for NAMUR inputs.

Select body size by real target size and mechanical envelope first, then choose flush or non-flush construction. Non-flush versions give more range but require more clearance from surrounding metal; flush versions usually package more easily in crowded fixtures.

Applications

Representative machine-level use cases include:

• Hazardous-area or intrinsically safe sensing architectures that use NAMUR barriers or isolators.
• Industrial machines that standardize on NAMUR current-level inputs instead of standard transistor outputs.
• Metal target detection in process equipment, packaging machinery, and conventional automation where low-energy signaling is required.
• Retrofits where an existing NAMUR input chain already defines the interface standard.

Compatibility

• Suitable for 8.2V DC NAMUR input architectures with the correct barrier or evaluation electronics.
• Best for ferrous metal targets sized close to the datasheet standard target for the chosen body diameter.
• Not intended as a direct drop-in replacement for PNP or NPN PLC inputs without a proper NAMUR interface stage.

How to Choose

When selecting Lanbao NAMUR Cylindrical Inductive Sensor, start with the sensing method, target behavior, and mounting envelope before narrowing down the electrical variant.

After the mechanical fit is clear, match the output logic, connection style, and service approach to the actual controller and maintenance workflow.

Part Number Matrix

Choose the NAMUR family by body diameter and mounting style first. M12 fits tighter layouts, M18 is a common general-purpose industrial size, and M30 suits larger metal targets and wider clearances. Choose non-flush only when the mounting envelope can support the extra free space around the sensor body.

Lanbao Part Number	Body & Mounting	Rated Distance	Connection
LR12XAF02FLCN	M12 flush	2mm	2m cable
LR12XAN04FLCN	M12 non-flush	4mm	2m cable
LR18XAF05FLCN	M18 flush	5mm	2m cable
LR18XAN08FLCN	M18 non-flush	8mm	2m cable
LR30XAF10FLCN	M30 flush	10mm	2m cable
LR30XAN15FLCN	M30 non-flush	15mm	2m cable

Design Notes

Start the development cycle for Lanbao NAMUR Cylindrical Inductive Sensor by confirming the sensing method, electrical interface, and mechanical envelope at the same time.

Use the datasheet and CAD resources early so the selected part number is checked against the real controller, bracket, and service requirements.

Before release, validate the final part number on the real target and installation geometry instead of relying on nominal catalog values alone.

FAQ

Can I wire these directly to a normal PLC digital input?

Not in the usual way. NAMUR sensors are meant for 8.2V current-based interfaces or barriers, so a standard transistor-input PLC card is not the correct direct destination.

Flush or non-flush?

Choose flush when the sensor must sit inside surrounding metal. Choose non-flush when you can provide more free space and want the longer rated distance.

Why would I choose M30 instead of M18?

Choose M30 when the target is larger, the bracket envelope is generous, and you want more range. Choose M18 when the mechanical space is tighter and the target geometry supports the smaller body.

What is the practical NAMUR current behavior?

Triggered state is specified at <=1mA and not-triggered state at >=2.2mA, so the receiving barrier or evaluation unit interprets sensor state from current rather than a transistor voltage level.

Related Products

If you are building a complete automation stack, pair these Lanbao sensors with Arduino development boards, DFRobot modules, ESPRESSIF wireless MCUs, Hi-Link power modules, and Elephant Robotics motion platforms.

Resources

Use these resources for dimensional review, controller wiring checks, compliance review, and final part-number confirmation.

• Manufacturer Family Page
• LR12X NAMUR Datasheet
• LR18X NAMUR Datasheet
• LR30X NAMUR Datasheet
• CAD PDF LR12XAF
• CAD PDF LR12XAN
• CAD PDF LR18XAF
• CAD PDF LR18XAN
• CAD PDF LR30XAF
• CAD PDF LR30XAN
• STEP LR12XAF
• STEP LR12XAN
• STEP LR18XAF
• STEP LR18XAN
• STEP LR30XAF
• STEP LR30XAN
• 3D PDF LR12XAF
• 3D PDF LR12XAN
• 3D PDF LR18XAF
• 3D PDF LR18XAN
• 3D PDF LR30XAF
• 3D PDF LR30XAN
• CE Certificate Inductive Sensor DC Series
• UKCA Certificate Inductive Sensor DC Series
• UL Certificate of Compliance
• About Lanbao
• Manufacturing Overview