Point Level Sensors Overview

Point level sensors, also known as level switches, are designed to detect a specific high or low level position inside a tank, silo, or pipeline. Instead of measuring the entire level continuously, they provide a clear ON/OFF signal for functions such as overfill protection, dry-run prevention, leak detection, and pump or valve control. Point level detection is widely used in water treatment, chemical storage, food processing, oil & fuel systems, and many industrial automation applications where reliable level alarms are required.

Different sensing technologies are available to match various media and working conditions. Common solutions include capacitive level switches, float switches, conductive probes, vibrating fork switches, and advanced non-contact or low-maintenance sensing methods for challenging liquids. The right choice depends on the medium properties (coating, viscosity, foam, conductivity), tank material, installation space, and required output type. On this page, you can explore our point level sensor product range and typical installation options, and quickly select a suitable model for your project or OEM integration.

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Quick Selection Table (Point Level Sensors)

Not sure which point level sensor fits your tank? Use the quick guide below to choose the right technology based on your medium and working condition.

Recommended Selection

  1. Sticky / coating liquids (syrup, glue, slurry, sewage)
    Recommended: Anti-coating smart point level sensor (Microwave sweeping type)
    Why: Stable detection even with coating buildup, less false alarms
  2.  Clean water / non-sticky liquids (water, coolant, light oil)
    Recommended: Standard point level switch / compact probe type
    Why: Simple installation, cost-effective, fast response
  3.  Conductive liquids (electrolyte, some wastewater)
    Recommended: Conductive level switch
    Why: Works well when conductivity is stable and sufficient
  4.  Simple tanks with stable liquid surface (low cost requirement)
    Recommended: Float level switch
    Why: Low cost and easy maintenance (mechanical contact)
  5.  Powder or granular materials (some solids applications)
    Recommended: Vibrating fork level switch
    Why: Reliable for bulk solids and dust environments

What information do we need to select the correct model?

To recommend the best point level sensor, please share:

  • Medium name (liquid type)
  • Tank material (metal / plastic)
  • Temperature & pressure
  • Installation position (top / side)
  • Required output (NPN / PNP / relay)

👉 Send your details and we will recommend a suitable model within 12 hours.

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Featured Point Level Sensor for Coating Media: KXR50

  • Anti-coating & anti-false alarm: Stable switching even with sticky, viscous, or coating liquids (slurry, sewage, syrup, glue).

  • Fast response & reliable output: High/low level detection with quick switching response for pump/valve control and overfill protection.

  • Easy installation & OEM customization: Compact design for top/side mounting, with configurable output and support for cable/thread/private label customization.

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Point Level Sensors

One solution for liquid, oil, foam, powder, and bulk material level detection

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Industrial Smart Point Level Sensor: This is the Mother of all sensors for material level sensing. It is programmable to detect the liquid or granular material’s point level (High – Mid – Low) in the storage tank where you have the sensors installed.

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Reverse Mounting Point Level Sensor:
Sensors can be mounted from the inside, saving space and facilitating installation and maintenance.

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kxr50 level sensors h0 6

Hygienic point level sensor with adapter collar: 
Suitable for food and beverage, pharmaceutical, chemical, and other industries with high requirements for safety and hygiene.

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kxr50 level sensor g1 high temp hygienic 6

High-Temp hygienic point sensor with adapter collar: 
It can work stably in a high-temperature environment of up to 150℃, suitable for food and beverage, pharmaceutical, chemical, and other industries with high safety and hygiene requirements.

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kxr50 level sensor h82 probe 5

The extended design allows the sensor to measure deeper or higher levels for larger vessels or storage environments, and work under various working conditions, adapting to different liquid characteristics and environmental conditions.

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kxr50 level sensor h100 extension 2

The extended design allows the sensor to measure deeper or higher levels for larger vessels or storage environments, and work under various working conditions, adapting to different liquid characteristics and environmental conditions.

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kxr50 level sensors rg reverse extension 12

Level Sensors can be mounted from the inside, saving space and facilitating installation and maintenance. The extended design allows the sensor to operate in various operating conditions, adapting to different material characteristics and environmental conditions.

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kxr50 g1 high temperature extension

High Temperature Extension
Capable of stable operation in environments up to 150°C, the extended design allows the sensor to measure deeper or higher levels for larger vessels or deeper storage environments.

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kxr60 extended explosion proof type 14

This level sensor is based on the KXR50 series, with an added explosion-proof function. The sensor’s probe has been lengthened, making it suitable for detecting powder, dust, and other explosive materials in complex working conditions.

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kxr60 explosion proof 2088 13

This level sensor is based on the KXR50 series, featuring an explosion-proof function that makes it suitable for detecting powder, dust, and other explosive materials in complex working conditions.

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kxr50 level sensors g0 5

KXR50AA is a smart capacitive oil-water interface sensor using adaptive sensing technology. It automatically distinguishes water from oil without calibration. With 4–20mA output for continuous monitoring and RS485 communication for long-distance data transmission, it enables reliable integration with control and automation systems.

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KXR50 level sensor with H2 + G1/2 thread, integrated heat fins, and 150 mm extended probe, designed for high-temperature applications up to 235 °C, ensuring stable point level detection in demanding industrial process environments.

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Typical Installation & Application Scenarios

Top Mount on Tank (Standard)

Most common installation for sealed tanks and vessels
Installed from the top of the tank to detect high or low point levels of liquids, powders, or granules. Ideal for chemical reactors, mixing tanks, and storage vessels.

Side Mount on Silo or Hopper

Reliable point detection for powders and bulk solids
Mounted on the side wall of silos or hoppers to detect material presence, blockage, or empty status. Suitable for grain, cement, plastic pellets, and feedstock applications.

 Oil / Water Interface Detection

Dedicated solution for oil tanks and separators
Designed to detect and distinguish oil and water layers inside tanks. Commonly used in fuel storage, oil separators, transformer oil tanks, and petroleum applications.

Pipe or Vertical Tube Installation

For extreme thermal environments up to 235°C
Equipped with heat fins and extended probe length to withstand high process temperatures. Used in reactors, asphalt tanks, bitumen systems, and hot oil processes.

High-Temperature Process Installation

For extreme thermal environments up to 235°C
Equipped with heat fins and extended probe length to withstand high process temperatures. Used in reactors, asphalt tanks, bitumen systems, and hot oil processes.

Custom Length & Thread Mounting

Tailored to your process and vessel design
Supports customized probe lengths, G-thread or flange mounting, and special materials to match specific tank depth, medium, and installation constraints.

Point Level Sensors vs. Traditional Level Switches — A Clear Comparison

Most level measurement problems are not caused by the process itself,
but by false alarms, media buildup, foam, and frequent maintenance.

This comparison helps you quickly understand why smart point level sensors
are increasingly replacing float switches and tuning fork switches
in modern industrial applications.

Key Performance Comparison in Real Applications

Feature Point Level Sensor Float Switch Tuning Fork
False Alarm Resistance High Medium Medium
Foam Handling Excellent Poor Good
Media Flexibility Liquids / Solids / Foam Liquids only Liquids & some solids
Coating / Buildup Impact Minimal High Medium
Moving Parts None Yes No
Maintenance Frequency Low High Medium
Installation Orientation Flexible Limited Limited
Long-Term Stability Excellent Fair Good

 Point Level Sensors Applications

petrochemical industry

For Automotive Manufacturing

KXR50 is used in automotive production lines to monitor liquid levels in process tanks, coolant systems, cleaning baths, and coating equipment. Its resistance to buildup and oil contamination ensures stable level alarms and reliable operation in continuous manufacturing environments.

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3d printing industry

For Additive Manufacturing

In additive manufacturing systems, KXR50 supports level detection of resins, binders, and auxiliary process fluids. The sensor provides consistent switching performance despite material changes, helping maintain stable material supply and reducing downtime during printing operations.

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hydraulic systems

For Hydraulic Systems

KXR50 is widely applied in hydraulic oil tanks and reservoirs for high and low level detection. It helps prevent pump dry-run, oil overflow, and system damage, delivering dependable performance even with oil aging, foam, or temperature fluctuations.

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food and beverage

For Food and Beverage

In food and beverage processing, KXR50 is suitable for level detection of liquids, viscous media, and semi-solid products. Its compact design and stable sensing performance support reliable operation in mixing tanks, storage vessels, and process equipment.

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level sensor for chemical industry

For Petroleum and Chemical Industry

KXR50 is designed for use in petroleum and chemical applications such as oil tanks, chemical vessels, and process reactors. It accurately detects level presence and interfaces while remaining unaffected by coating, residue, or changing dielectric properties of the media.

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pharmaceutical industry 1

For Pharmaceutical Industry

In pharmaceutical production, KXR50 is used for precise level detection in process vessels and storage tanks. Its stable sensing behavior and adaptable configuration help meet strict process control requirements and support consistent, repeatable production workflows.

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water and water treatment

For Water and Wastewater Treatment

KXR50 supports point level detection in clean water tanks, wastewater systems, and sludge handling equipment. It provides reliable alarms for level limits, helping protect pumps and improve operational safety in treatment facilities.

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addictive manufacturing

For Bulk Solids and Powder Handling

KXR50 is effective in detecting powders, granules, and bulk solids in silos and bins. Adaptive sensing minimizes false alarms caused by dust, buildup, or material variation, ensuring stable operation in bulk material handling systems.

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Why Choose Our Point Level Sensors

Engineered for reliable level detection in demanding industrial environments, our smart level sensors help engineers reduce false alarms, simplify installation, and ensure long-term stable operation.

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All-Material Detection

Detects liquids, powders, granules, foam, and pastes with one sensor. No need to change probes for different media.

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pharmaceutical tank liquid medicine 2

No False Alarms

Adaptive sensing technology ignores material buildup, condensation, and residue on the probe.

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Plug & Play Setup

No complex calibration required. Quick commissioning reduces installation and startup time.

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High Temperature Capability

Stable operation in high-temperature processes, suitable for hot oil, chemicals, and industrial tanks.

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Compact & Robust Design

Stainless steel housing with compact form factor fits tight installation spaces.

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Multiple Mounting Options

Thread, flange, extended probe, and custom lengths available to match different vessels and silos.

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Industrial Signal Compatibility

Supports standard industrial outputs for seamless integration with PLC and control systems.

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Proven in Harsh Environments

Used in oil tanks, chemical reactors, powder silos, and wastewater systems worldwide.

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Our Engineering & Sensor Services

From sensor selection to system integration, we support your level measurement projects end to end.

Application-Driven Sensor Selection

Help customers choose the right level sensor based on medium, temperature, pressure, and installation conditions.

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Custom Probe Length & Mounting

Support customized probe length, thread type, flange options, and special installation requirements.

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Oil & Liquid Interface Detection

Provide reliable solutions for oil, fuel, and oil-water interface level detection in tanks and reservoirs.

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Continuous Level Measurement Solutions

Deliver stable analog and digital level measurement using capacitive and radar technologies.

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Industrial Signal & PLC Integration

Support 4-20mA, RS485, Modbus and easy integration with PLC, DCS, and SCADA systems.

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OEM & Private Label Support

Offer OEM, ODM, and private labeling services including housing, cable, connector, and branding options.

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Technical Documentation & Support

Provide datasheets, wiring diagrams, application notes, and remote technical support.

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Project-Based Engineering Support

Assist EPCs, system integrators, and equipment manufacturers from design to commissioning.

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Ponit Level Sensors – Frequently Asked Questions (FAQ)

The KXR50 smart point level sensor is designed to detect a wide range of materials, including liquids, water, oil, foam, paste, powder, granules, and bulk solids.
Thanks to its microwave spectrum sweeping technology, the sensor adapts automatically to different dielectric properties, ensuring stable and repeatable detection across mixed or changing media.

It takes us 3-7 days to prepare your order and it usually takes 7-15 business days to receive your order after it is shipped. We will do our best to deliver on time. learn more

The KXR50 operates on a wide 12–30 VDC power supply, making it compatible with most industrial control systems, PLCs, and automation panels.
Typical current consumption is 8 mA, with a maximum load current of 40 mA.

Yes. The KXR50 is available in different temperature configurations:

  • Standard version: –40 to 115 °C

  • High-temperature version: up to 235 °C
    Optional heat fins and extended probe designs are available to improve thermal isolation in demanding process environments.

The KXR50 provides PNP or NPN switching outputs, with selectable NO / NC logic.
The maximum output current is 20 mA, and the sensor includes short-circuit protection and reverse polarity protection as standard.

The KXR50 is designed for long-term, maintenance-free operation.
With no moving parts, a stainless steel housing, and solid-state electronics, the sensor maintains stable performance over years of continuous use. It is widely used in applications where frequent sensor replacement or recalibration is not acceptable.

Yes. The KXR50 is specifically designed for installation in metal tanks, pipes, and vessels.
Its sensing technology is immune to tank wall material and does not require special insulation or non-metallic mounting ports. This makes it suitable for steel tanks commonly used in oil, chemical, and industrial process applications.

The response time of the KXR50 is typically 0.2 seconds, with an adjustable damping time from 0 to 5 seconds.
This allows the sensor to work reliably in both fast-changing and turbulent process conditions.

Yes. The KXR50 supports customized probe lengths, thread types (such as G 1/2, reverse mounting), and optional heat-fin structures.
The housing is made of 316L stainless steel, with a PEEK sensing probe, suitable for industrial and hygienic applications.

Yes. The KXR50AA oil–water interface version is specifically designed to distinguish oil from water automatically.
It provides continuous monitoring of oil and water layers without requiring manual recalibration when media conditions change.

In most applications, the KXR50 is factory-configured and ready for installation without on-site calibration.

For advanced applications or unusual materials, you have the option to purchase a KOMM800 programmer, which allows you to adjust sensor parameters and optimize detection settings for different materials directly on site.

The KXR50 features IP67 protection, making it suitable for harsh industrial environments.
It also supports explosion-proof versions (Ex ia IIC T5 Ga / Ex ta IIIC T100°C) and complies with relevant EMC and industrial safety standards.